diff options
Diffstat (limited to 'drivers/video/fbdev/omap2/omapfb/dss/dispc.c')
| -rw-r--r-- | drivers/video/fbdev/omap2/omapfb/dss/dispc.c | 4095 |
1 files changed, 4095 insertions, 0 deletions
diff --git a/drivers/video/fbdev/omap2/omapfb/dss/dispc.c b/drivers/video/fbdev/omap2/omapfb/dss/dispc.c new file mode 100644 index 000000000..b2d6e6df2 --- /dev/null +++ b/drivers/video/fbdev/omap2/omapfb/dss/dispc.c @@ -0,0 +1,4095 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * linux/drivers/video/omap2/dss/dispc.c + * + * Copyright (C) 2009 Nokia Corporation + * Author: Tomi Valkeinen <tomi.valkeinen@nokia.com> + * + * Some code and ideas taken from drivers/video/omap/ driver + * by Imre Deak. + */ + +#define DSS_SUBSYS_NAME "DISPC" + +#include <linux/kernel.h> +#include <linux/dma-mapping.h> +#include <linux/vmalloc.h> +#include <linux/export.h> +#include <linux/clk.h> +#include <linux/io.h> +#include <linux/jiffies.h> +#include <linux/seq_file.h> +#include <linux/delay.h> +#include <linux/workqueue.h> +#include <linux/hardirq.h> +#include <linux/platform_device.h> +#include <linux/pm_runtime.h> +#include <linux/sizes.h> +#include <linux/mfd/syscon.h> +#include <linux/regmap.h> +#include <linux/of.h> +#include <linux/component.h> + +#include <video/omapfb_dss.h> + +#include "dss.h" +#include "dss_features.h" +#include "dispc.h" + +/* DISPC */ +#define DISPC_SZ_REGS SZ_4K + +enum omap_burst_size { + BURST_SIZE_X2 = 0, + BURST_SIZE_X4 = 1, + BURST_SIZE_X8 = 2, +}; + +#define REG_GET(idx, start, end) \ + FLD_GET(dispc_read_reg(idx), start, end) + +#define REG_FLD_MOD(idx, val, start, end) \ + dispc_write_reg(idx, FLD_MOD(dispc_read_reg(idx), val, start, end)) + +struct dispc_features { + u8 sw_start; + u8 fp_start; + u8 bp_start; + u16 sw_max; + u16 vp_max; + u16 hp_max; + u8 mgr_width_start; + u8 mgr_height_start; + u16 mgr_width_max; + u16 mgr_height_max; + unsigned long max_lcd_pclk; + unsigned long max_tv_pclk; + int (*calc_scaling) (unsigned long pclk, unsigned long lclk, + const struct omap_video_timings *mgr_timings, + u16 width, u16 height, u16 out_width, u16 out_height, + enum omap_color_mode color_mode, bool *five_taps, + int *x_predecim, int *y_predecim, int *decim_x, int *decim_y, + u16 pos_x, unsigned long *core_clk, bool mem_to_mem); + unsigned long (*calc_core_clk) (unsigned long pclk, + u16 width, u16 height, u16 out_width, u16 out_height, + bool mem_to_mem); + u8 num_fifos; + + /* swap GFX & WB fifos */ + bool gfx_fifo_workaround:1; + + /* no DISPC_IRQ_FRAMEDONETV on this SoC */ + bool no_framedone_tv:1; + + /* revert to the OMAP4 mechanism of DISPC Smart Standby operation */ + bool mstandby_workaround:1; + + bool set_max_preload:1; + + /* PIXEL_INC is not added to the last pixel of a line */ + bool last_pixel_inc_missing:1; + + /* POL_FREQ has ALIGN bit */ + bool supports_sync_align:1; + + bool has_writeback:1; +}; + +#define DISPC_MAX_NR_FIFOS 5 + +static struct { + struct platform_device *pdev; + void __iomem *base; + + int irq; + irq_handler_t user_handler; + void *user_data; + + unsigned long core_clk_rate; + unsigned long tv_pclk_rate; + + u32 fifo_size[DISPC_MAX_NR_FIFOS]; + /* maps which plane is using a fifo. fifo-id -> plane-id */ + int fifo_assignment[DISPC_MAX_NR_FIFOS]; + + bool ctx_valid; + u32 ctx[DISPC_SZ_REGS / sizeof(u32)]; + + const struct dispc_features *feat; + + bool is_enabled; + + struct regmap *syscon_pol; + u32 syscon_pol_offset; + + /* DISPC_CONTROL & DISPC_CONFIG lock*/ + spinlock_t control_lock; +} dispc; + +enum omap_color_component { + /* used for all color formats for OMAP3 and earlier + * and for RGB and Y color component on OMAP4 + */ + DISPC_COLOR_COMPONENT_RGB_Y = 1 << 0, + /* used for UV component for + * OMAP_DSS_COLOR_YUV2, OMAP_DSS_COLOR_UYVY, OMAP_DSS_COLOR_NV12 + * color formats on OMAP4 + */ + DISPC_COLOR_COMPONENT_UV = 1 << 1, +}; + +enum mgr_reg_fields { + DISPC_MGR_FLD_ENABLE, + DISPC_MGR_FLD_STNTFT, + DISPC_MGR_FLD_GO, + DISPC_MGR_FLD_TFTDATALINES, + DISPC_MGR_FLD_STALLMODE, + DISPC_MGR_FLD_TCKENABLE, + DISPC_MGR_FLD_TCKSELECTION, + DISPC_MGR_FLD_CPR, + DISPC_MGR_FLD_FIFOHANDCHECK, + /* used to maintain a count of the above fields */ + DISPC_MGR_FLD_NUM, +}; + +struct dispc_reg_field { + u16 reg; + u8 high; + u8 low; +}; + +static const struct { + const char *name; + u32 vsync_irq; + u32 framedone_irq; + u32 sync_lost_irq; + struct dispc_reg_field reg_desc[DISPC_MGR_FLD_NUM]; +} mgr_desc[] = { + [OMAP_DSS_CHANNEL_LCD] = { + .name = "LCD", + .vsync_irq = DISPC_IRQ_VSYNC, + .framedone_irq = DISPC_IRQ_FRAMEDONE, + .sync_lost_irq = DISPC_IRQ_SYNC_LOST, + .reg_desc = { + [DISPC_MGR_FLD_ENABLE] = { DISPC_CONTROL, 0, 0 }, + [DISPC_MGR_FLD_STNTFT] = { DISPC_CONTROL, 3, 3 }, + [DISPC_MGR_FLD_GO] = { DISPC_CONTROL, 5, 5 }, + [DISPC_MGR_FLD_TFTDATALINES] = { DISPC_CONTROL, 9, 8 }, + [DISPC_MGR_FLD_STALLMODE] = { DISPC_CONTROL, 11, 11 }, + [DISPC_MGR_FLD_TCKENABLE] = { DISPC_CONFIG, 10, 10 }, + [DISPC_MGR_FLD_TCKSELECTION] = { DISPC_CONFIG, 11, 11 }, + [DISPC_MGR_FLD_CPR] = { DISPC_CONFIG, 15, 15 }, + [DISPC_MGR_FLD_FIFOHANDCHECK] = { DISPC_CONFIG, 16, 16 }, + }, + }, + [OMAP_DSS_CHANNEL_DIGIT] = { + .name = "DIGIT", + .vsync_irq = DISPC_IRQ_EVSYNC_ODD | DISPC_IRQ_EVSYNC_EVEN, + .framedone_irq = DISPC_IRQ_FRAMEDONETV, + .sync_lost_irq = DISPC_IRQ_SYNC_LOST_DIGIT, + .reg_desc = { + [DISPC_MGR_FLD_ENABLE] = { DISPC_CONTROL, 1, 1 }, + [DISPC_MGR_FLD_STNTFT] = { }, + [DISPC_MGR_FLD_GO] = { DISPC_CONTROL, 6, 6 }, + [DISPC_MGR_FLD_TFTDATALINES] = { }, + [DISPC_MGR_FLD_STALLMODE] = { }, + [DISPC_MGR_FLD_TCKENABLE] = { DISPC_CONFIG, 12, 12 }, + [DISPC_MGR_FLD_TCKSELECTION] = { DISPC_CONFIG, 13, 13 }, + [DISPC_MGR_FLD_CPR] = { }, + [DISPC_MGR_FLD_FIFOHANDCHECK] = { DISPC_CONFIG, 16, 16 }, + }, + }, + [OMAP_DSS_CHANNEL_LCD2] = { + .name = "LCD2", + .vsync_irq = DISPC_IRQ_VSYNC2, + .framedone_irq = DISPC_IRQ_FRAMEDONE2, + .sync_lost_irq = DISPC_IRQ_SYNC_LOST2, + .reg_desc = { + [DISPC_MGR_FLD_ENABLE] = { DISPC_CONTROL2, 0, 0 }, + [DISPC_MGR_FLD_STNTFT] = { DISPC_CONTROL2, 3, 3 }, + [DISPC_MGR_FLD_GO] = { DISPC_CONTROL2, 5, 5 }, + [DISPC_MGR_FLD_TFTDATALINES] = { DISPC_CONTROL2, 9, 8 }, + [DISPC_MGR_FLD_STALLMODE] = { DISPC_CONTROL2, 11, 11 }, + [DISPC_MGR_FLD_TCKENABLE] = { DISPC_CONFIG2, 10, 10 }, + [DISPC_MGR_FLD_TCKSELECTION] = { DISPC_CONFIG2, 11, 11 }, + [DISPC_MGR_FLD_CPR] = { DISPC_CONFIG2, 15, 15 }, + [DISPC_MGR_FLD_FIFOHANDCHECK] = { DISPC_CONFIG2, 16, 16 }, + }, + }, + [OMAP_DSS_CHANNEL_LCD3] = { + .name = "LCD3", + .vsync_irq = DISPC_IRQ_VSYNC3, + .framedone_irq = DISPC_IRQ_FRAMEDONE3, + .sync_lost_irq = DISPC_IRQ_SYNC_LOST3, + .reg_desc = { + [DISPC_MGR_FLD_ENABLE] = { DISPC_CONTROL3, 0, 0 }, + [DISPC_MGR_FLD_STNTFT] = { DISPC_CONTROL3, 3, 3 }, + [DISPC_MGR_FLD_GO] = { DISPC_CONTROL3, 5, 5 }, + [DISPC_MGR_FLD_TFTDATALINES] = { DISPC_CONTROL3, 9, 8 }, + [DISPC_MGR_FLD_STALLMODE] = { DISPC_CONTROL3, 11, 11 }, + [DISPC_MGR_FLD_TCKENABLE] = { DISPC_CONFIG3, 10, 10 }, + [DISPC_MGR_FLD_TCKSELECTION] = { DISPC_CONFIG3, 11, 11 }, + [DISPC_MGR_FLD_CPR] = { DISPC_CONFIG3, 15, 15 }, + [DISPC_MGR_FLD_FIFOHANDCHECK] = { DISPC_CONFIG3, 16, 16 }, + }, + }, +}; + +struct color_conv_coef { + int ry, rcr, rcb, gy, gcr, gcb, by, bcr, bcb; + int full_range; +}; + +static unsigned long dispc_fclk_rate(void); +static unsigned long dispc_core_clk_rate(void); +static unsigned long dispc_mgr_lclk_rate(enum omap_channel channel); +static unsigned long dispc_mgr_pclk_rate(enum omap_channel channel); + +static unsigned long dispc_plane_pclk_rate(enum omap_plane plane); +static unsigned long dispc_plane_lclk_rate(enum omap_plane plane); + +static inline void dispc_write_reg(const u16 idx, u32 val) +{ + __raw_writel(val, dispc.base + idx); +} + +static inline u32 dispc_read_reg(const u16 idx) +{ + return __raw_readl(dispc.base + idx); +} + +static u32 mgr_fld_read(enum omap_channel channel, enum mgr_reg_fields regfld) +{ + const struct dispc_reg_field rfld = mgr_desc[channel].reg_desc[regfld]; + return REG_GET(rfld.reg, rfld.high, rfld.low); +} + +static void mgr_fld_write(enum omap_channel channel, + enum mgr_reg_fields regfld, int val) { + const struct dispc_reg_field rfld = mgr_desc[channel].reg_desc[regfld]; + const bool need_lock = rfld.reg == DISPC_CONTROL || rfld.reg == DISPC_CONFIG; + unsigned long flags; + + if (need_lock) + spin_lock_irqsave(&dispc.control_lock, flags); + + REG_FLD_MOD(rfld.reg, val, rfld.high, rfld.low); + + if (need_lock) + spin_unlock_irqrestore(&dispc.control_lock, flags); +} + +#define SR(reg) \ + dispc.ctx[DISPC_##reg / sizeof(u32)] = dispc_read_reg(DISPC_##reg) +#define RR(reg) \ + dispc_write_reg(DISPC_##reg, dispc.ctx[DISPC_##reg / sizeof(u32)]) + +static void dispc_save_context(void) +{ + int i, j; + + DSSDBG("dispc_save_context\n"); + + SR(IRQENABLE); + SR(CONTROL); + SR(CONFIG); + SR(LINE_NUMBER); + if (dss_has_feature(FEAT_ALPHA_FIXED_ZORDER) || + dss_has_feature(FEAT_ALPHA_FREE_ZORDER)) + SR(GLOBAL_ALPHA); + if (dss_has_feature(FEAT_MGR_LCD2)) { + SR(CONTROL2); + SR(CONFIG2); + } + if (dss_has_feature(FEAT_MGR_LCD3)) { + SR(CONTROL3); + SR(CONFIG3); + } + + for (i = 0; i < dss_feat_get_num_mgrs(); i++) { + SR(DEFAULT_COLOR(i)); + SR(TRANS_COLOR(i)); + SR(SIZE_MGR(i)); + if (i == OMAP_DSS_CHANNEL_DIGIT) + continue; + SR(TIMING_H(i)); + SR(TIMING_V(i)); + SR(POL_FREQ(i)); + SR(DIVISORo(i)); + + SR(DATA_CYCLE1(i)); + SR(DATA_CYCLE2(i)); + SR(DATA_CYCLE3(i)); + + if (dss_has_feature(FEAT_CPR)) { + SR(CPR_COEF_R(i)); + SR(CPR_COEF_G(i)); + SR(CPR_COEF_B(i)); + } + } + + for (i = 0; i < dss_feat_get_num_ovls(); i++) { + SR(OVL_BA0(i)); + SR(OVL_BA1(i)); + SR(OVL_POSITION(i)); + SR(OVL_SIZE(i)); + SR(OVL_ATTRIBUTES(i)); + SR(OVL_FIFO_THRESHOLD(i)); + SR(OVL_ROW_INC(i)); + SR(OVL_PIXEL_INC(i)); + if (dss_has_feature(FEAT_PRELOAD)) + SR(OVL_PRELOAD(i)); + if (i == OMAP_DSS_GFX) { + SR(OVL_WINDOW_SKIP(i)); + SR(OVL_TABLE_BA(i)); + continue; + } + SR(OVL_FIR(i)); + SR(OVL_PICTURE_SIZE(i)); + SR(OVL_ACCU0(i)); + SR(OVL_ACCU1(i)); + + for (j = 0; j < 8; j++) + SR(OVL_FIR_COEF_H(i, j)); + + for (j = 0; j < 8; j++) + SR(OVL_FIR_COEF_HV(i, j)); + + for (j = 0; j < 5; j++) + SR(OVL_CONV_COEF(i, j)); + + if (dss_has_feature(FEAT_FIR_COEF_V)) { + for (j = 0; j < 8; j++) + SR(OVL_FIR_COEF_V(i, j)); + } + + if (dss_has_feature(FEAT_HANDLE_UV_SEPARATE)) { + SR(OVL_BA0_UV(i)); + SR(OVL_BA1_UV(i)); + SR(OVL_FIR2(i)); + SR(OVL_ACCU2_0(i)); + SR(OVL_ACCU2_1(i)); + + for (j = 0; j < 8; j++) + SR(OVL_FIR_COEF_H2(i, j)); + + for (j = 0; j < 8; j++) + SR(OVL_FIR_COEF_HV2(i, j)); + + for (j = 0; j < 8; j++) + SR(OVL_FIR_COEF_V2(i, j)); + } + if (dss_has_feature(FEAT_ATTR2)) + SR(OVL_ATTRIBUTES2(i)); + } + + if (dss_has_feature(FEAT_CORE_CLK_DIV)) + SR(DIVISOR); + + dispc.ctx_valid = true; + + DSSDBG("context saved\n"); +} + +static void dispc_restore_context(void) +{ + int i, j; + + DSSDBG("dispc_restore_context\n"); + + if (!dispc.ctx_valid) + return; + + /*RR(IRQENABLE);*/ + /*RR(CONTROL);*/ + RR(CONFIG); + RR(LINE_NUMBER); + if (dss_has_feature(FEAT_ALPHA_FIXED_ZORDER) || + dss_has_feature(FEAT_ALPHA_FREE_ZORDER)) + RR(GLOBAL_ALPHA); + if (dss_has_feature(FEAT_MGR_LCD2)) + RR(CONFIG2); + if (dss_has_feature(FEAT_MGR_LCD3)) + RR(CONFIG3); + + for (i = 0; i < dss_feat_get_num_mgrs(); i++) { + RR(DEFAULT_COLOR(i)); + RR(TRANS_COLOR(i)); + RR(SIZE_MGR(i)); + if (i == OMAP_DSS_CHANNEL_DIGIT) + continue; + RR(TIMING_H(i)); + RR(TIMING_V(i)); + RR(POL_FREQ(i)); + RR(DIVISORo(i)); + + RR(DATA_CYCLE1(i)); + RR(DATA_CYCLE2(i)); + RR(DATA_CYCLE3(i)); + + if (dss_has_feature(FEAT_CPR)) { + RR(CPR_COEF_R(i)); + RR(CPR_COEF_G(i)); + RR(CPR_COEF_B(i)); + } + } + + for (i = 0; i < dss_feat_get_num_ovls(); i++) { + RR(OVL_BA0(i)); + RR(OVL_BA1(i)); + RR(OVL_POSITION(i)); + RR(OVL_SIZE(i)); + RR(OVL_ATTRIBUTES(i)); + RR(OVL_FIFO_THRESHOLD(i)); + RR(OVL_ROW_INC(i)); + RR(OVL_PIXEL_INC(i)); + if (dss_has_feature(FEAT_PRELOAD)) + RR(OVL_PRELOAD(i)); + if (i == OMAP_DSS_GFX) { + RR(OVL_WINDOW_SKIP(i)); + RR(OVL_TABLE_BA(i)); + continue; + } + RR(OVL_FIR(i)); + RR(OVL_PICTURE_SIZE(i)); + RR(OVL_ACCU0(i)); + RR(OVL_ACCU1(i)); + + for (j = 0; j < 8; j++) + RR(OVL_FIR_COEF_H(i, j)); + + for (j = 0; j < 8; j++) + RR(OVL_FIR_COEF_HV(i, j)); + + for (j = 0; j < 5; j++) + RR(OVL_CONV_COEF(i, j)); + + if (dss_has_feature(FEAT_FIR_COEF_V)) { + for (j = 0; j < 8; j++) + RR(OVL_FIR_COEF_V(i, j)); + } + + if (dss_has_feature(FEAT_HANDLE_UV_SEPARATE)) { + RR(OVL_BA0_UV(i)); + RR(OVL_BA1_UV(i)); + RR(OVL_FIR2(i)); + RR(OVL_ACCU2_0(i)); + RR(OVL_ACCU2_1(i)); + + for (j = 0; j < 8; j++) + RR(OVL_FIR_COEF_H2(i, j)); + + for (j = 0; j < 8; j++) + RR(OVL_FIR_COEF_HV2(i, j)); + + for (j = 0; j < 8; j++) + RR(OVL_FIR_COEF_V2(i, j)); + } + if (dss_has_feature(FEAT_ATTR2)) + RR(OVL_ATTRIBUTES2(i)); + } + + if (dss_has_feature(FEAT_CORE_CLK_DIV)) + RR(DIVISOR); + + /* enable last, because LCD & DIGIT enable are here */ + RR(CONTROL); + if (dss_has_feature(FEAT_MGR_LCD2)) + RR(CONTROL2); + if (dss_has_feature(FEAT_MGR_LCD3)) + RR(CONTROL3); + /* clear spurious SYNC_LOST_DIGIT interrupts */ + dispc_clear_irqstatus(DISPC_IRQ_SYNC_LOST_DIGIT); + + /* + * enable last so IRQs won't trigger before + * the context is fully restored + */ + RR(IRQENABLE); + + DSSDBG("context restored\n"); +} + +#undef SR +#undef RR + +int dispc_runtime_get(void) +{ + int r; + + DSSDBG("dispc_runtime_get\n"); + + r = pm_runtime_get_sync(&dispc.pdev->dev); + if (WARN_ON(r < 0)) { + pm_runtime_put_sync(&dispc.pdev->dev); + return r; + } + return 0; +} +EXPORT_SYMBOL(dispc_runtime_get); + +void dispc_runtime_put(void) +{ + int r; + + DSSDBG("dispc_runtime_put\n"); + + r = pm_runtime_put_sync(&dispc.pdev->dev); + WARN_ON(r < 0 && r != -ENOSYS); +} +EXPORT_SYMBOL(dispc_runtime_put); + +u32 dispc_mgr_get_vsync_irq(enum omap_channel channel) +{ + return mgr_desc[channel].vsync_irq; +} +EXPORT_SYMBOL(dispc_mgr_get_vsync_irq); + +u32 dispc_mgr_get_framedone_irq(enum omap_channel channel) +{ + if (channel == OMAP_DSS_CHANNEL_DIGIT && dispc.feat->no_framedone_tv) + return 0; + + return mgr_desc[channel].framedone_irq; +} +EXPORT_SYMBOL(dispc_mgr_get_framedone_irq); + +u32 dispc_mgr_get_sync_lost_irq(enum omap_channel channel) +{ + return mgr_desc[channel].sync_lost_irq; +} +EXPORT_SYMBOL(dispc_mgr_get_sync_lost_irq); + +bool dispc_mgr_go_busy(enum omap_channel channel) +{ + return mgr_fld_read(channel, DISPC_MGR_FLD_GO) == 1; +} +EXPORT_SYMBOL(dispc_mgr_go_busy); + +void dispc_mgr_go(enum omap_channel channel) +{ + WARN_ON(!dispc_mgr_is_enabled(channel)); + WARN_ON(dispc_mgr_go_busy(channel)); + + DSSDBG("GO %s\n", mgr_desc[channel].name); + + mgr_fld_write(channel, DISPC_MGR_FLD_GO, 1); +} +EXPORT_SYMBOL(dispc_mgr_go); + +static void dispc_ovl_write_firh_reg(enum omap_plane plane, int reg, u32 value) +{ + dispc_write_reg(DISPC_OVL_FIR_COEF_H(plane, reg), value); +} + +static void dispc_ovl_write_firhv_reg(enum omap_plane plane, int reg, u32 value) +{ + dispc_write_reg(DISPC_OVL_FIR_COEF_HV(plane, reg), value); +} + +static void dispc_ovl_write_firv_reg(enum omap_plane plane, int reg, u32 value) +{ + dispc_write_reg(DISPC_OVL_FIR_COEF_V(plane, reg), value); +} + +static void dispc_ovl_write_firh2_reg(enum omap_plane plane, int reg, u32 value) +{ + BUG_ON(plane == OMAP_DSS_GFX); + + dispc_write_reg(DISPC_OVL_FIR_COEF_H2(plane, reg), value); +} + +static void dispc_ovl_write_firhv2_reg(enum omap_plane plane, int reg, + u32 value) +{ + BUG_ON(plane == OMAP_DSS_GFX); + + dispc_write_reg(DISPC_OVL_FIR_COEF_HV2(plane, reg), value); +} + +static void dispc_ovl_write_firv2_reg(enum omap_plane plane, int reg, u32 value) +{ + BUG_ON(plane == OMAP_DSS_GFX); + + dispc_write_reg(DISPC_OVL_FIR_COEF_V2(plane, reg), value); +} + +static void dispc_ovl_set_scale_coef(enum omap_plane plane, int fir_hinc, + int fir_vinc, int five_taps, + enum omap_color_component color_comp) +{ + const struct dispc_coef *h_coef, *v_coef; + int i; + + h_coef = dispc_ovl_get_scale_coef(fir_hinc, true); + v_coef = dispc_ovl_get_scale_coef(fir_vinc, five_taps); + + for (i = 0; i < 8; i++) { + u32 h, hv; + + h = FLD_VAL(h_coef[i].hc0_vc00, 7, 0) + | FLD_VAL(h_coef[i].hc1_vc0, 15, 8) + | FLD_VAL(h_coef[i].hc2_vc1, 23, 16) + | FLD_VAL(h_coef[i].hc3_vc2, 31, 24); + hv = FLD_VAL(h_coef[i].hc4_vc22, 7, 0) + | FLD_VAL(v_coef[i].hc1_vc0, 15, 8) + | FLD_VAL(v_coef[i].hc2_vc1, 23, 16) + | FLD_VAL(v_coef[i].hc3_vc2, 31, 24); + + if (color_comp == DISPC_COLOR_COMPONENT_RGB_Y) { + dispc_ovl_write_firh_reg(plane, i, h); + dispc_ovl_write_firhv_reg(plane, i, hv); + } else { + dispc_ovl_write_firh2_reg(plane, i, h); + dispc_ovl_write_firhv2_reg(plane, i, hv); + } + + } + + if (five_taps) { + for (i = 0; i < 8; i++) { + u32 v; + v = FLD_VAL(v_coef[i].hc0_vc00, 7, 0) + | FLD_VAL(v_coef[i].hc4_vc22, 15, 8); + if (color_comp == DISPC_COLOR_COMPONENT_RGB_Y) + dispc_ovl_write_firv_reg(plane, i, v); + else + dispc_ovl_write_firv2_reg(plane, i, v); + } + } +} + + +static void dispc_ovl_write_color_conv_coef(enum omap_plane plane, + const struct color_conv_coef *ct) +{ +#define CVAL(x, y) (FLD_VAL(x, 26, 16) | FLD_VAL(y, 10, 0)) + + dispc_write_reg(DISPC_OVL_CONV_COEF(plane, 0), CVAL(ct->rcr, ct->ry)); + dispc_write_reg(DISPC_OVL_CONV_COEF(plane, 1), CVAL(ct->gy, ct->rcb)); + dispc_write_reg(DISPC_OVL_CONV_COEF(plane, 2), CVAL(ct->gcb, ct->gcr)); + dispc_write_reg(DISPC_OVL_CONV_COEF(plane, 3), CVAL(ct->bcr, ct->by)); + dispc_write_reg(DISPC_OVL_CONV_COEF(plane, 4), CVAL(0, ct->bcb)); + + REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), ct->full_range, 11, 11); + +#undef CVAL +} + +static void dispc_setup_color_conv_coef(void) +{ + int i; + int num_ovl = dss_feat_get_num_ovls(); + const struct color_conv_coef ctbl_bt601_5_ovl = { + /* YUV -> RGB */ + 298, 409, 0, 298, -208, -100, 298, 0, 517, 0, + }; + const struct color_conv_coef ctbl_bt601_5_wb = { + /* RGB -> YUV */ + 66, 129, 25, 112, -94, -18, -38, -74, 112, 0, + }; + + for (i = 1; i < num_ovl; i++) + dispc_ovl_write_color_conv_coef(i, &ctbl_bt601_5_ovl); + + if (dispc.feat->has_writeback) + dispc_ovl_write_color_conv_coef(OMAP_DSS_WB, &ctbl_bt601_5_wb); +} + +static void dispc_ovl_set_ba0(enum omap_plane plane, u32 paddr) +{ + dispc_write_reg(DISPC_OVL_BA0(plane), paddr); +} + +static void dispc_ovl_set_ba1(enum omap_plane plane, u32 paddr) +{ + dispc_write_reg(DISPC_OVL_BA1(plane), paddr); +} + +static void dispc_ovl_set_ba0_uv(enum omap_plane plane, u32 paddr) +{ + dispc_write_reg(DISPC_OVL_BA0_UV(plane), paddr); +} + +static void dispc_ovl_set_ba1_uv(enum omap_plane plane, u32 paddr) +{ + dispc_write_reg(DISPC_OVL_BA1_UV(plane), paddr); +} + +static void dispc_ovl_set_pos(enum omap_plane plane, + enum omap_overlay_caps caps, int x, int y) +{ + u32 val; + + if ((caps & OMAP_DSS_OVL_CAP_POS) == 0) + return; + + val = FLD_VAL(y, 26, 16) | FLD_VAL(x, 10, 0); + + dispc_write_reg(DISPC_OVL_POSITION(plane), val); +} + +static void dispc_ovl_set_input_size(enum omap_plane plane, int width, + int height) +{ + u32 val = FLD_VAL(height - 1, 26, 16) | FLD_VAL(width - 1, 10, 0); + + if (plane == OMAP_DSS_GFX || plane == OMAP_DSS_WB) + dispc_write_reg(DISPC_OVL_SIZE(plane), val); + else + dispc_write_reg(DISPC_OVL_PICTURE_SIZE(plane), val); +} + +static void dispc_ovl_set_output_size(enum omap_plane plane, int width, + int height) +{ + u32 val; + + BUG_ON(plane == OMAP_DSS_GFX); + + val = FLD_VAL(height - 1, 26, 16) | FLD_VAL(width - 1, 10, 0); + + if (plane == OMAP_DSS_WB) + dispc_write_reg(DISPC_OVL_PICTURE_SIZE(plane), val); + else + dispc_write_reg(DISPC_OVL_SIZE(plane), val); +} + +static void dispc_ovl_set_zorder(enum omap_plane plane, + enum omap_overlay_caps caps, u8 zorder) +{ + if ((caps & OMAP_DSS_OVL_CAP_ZORDER) == 0) + return; + + REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), zorder, 27, 26); +} + +static void dispc_ovl_enable_zorder_planes(void) +{ + int i; + + if (!dss_has_feature(FEAT_ALPHA_FREE_ZORDER)) + return; + + for (i = 0; i < dss_feat_get_num_ovls(); i++) + REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(i), 1, 25, 25); +} + +static void dispc_ovl_set_pre_mult_alpha(enum omap_plane plane, + enum omap_overlay_caps caps, bool enable) +{ + if ((caps & OMAP_DSS_OVL_CAP_PRE_MULT_ALPHA) == 0) + return; + + REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), enable ? 1 : 0, 28, 28); +} + +static void dispc_ovl_setup_global_alpha(enum omap_plane plane, + enum omap_overlay_caps caps, u8 global_alpha) +{ + static const unsigned shifts[] = { 0, 8, 16, 24, }; + int shift; + + if ((caps & OMAP_DSS_OVL_CAP_GLOBAL_ALPHA) == 0) + return; + + shift = shifts[plane]; + REG_FLD_MOD(DISPC_GLOBAL_ALPHA, global_alpha, shift + 7, shift); +} + +static void dispc_ovl_set_pix_inc(enum omap_plane plane, s32 inc) +{ + dispc_write_reg(DISPC_OVL_PIXEL_INC(plane), inc); +} + +static void dispc_ovl_set_row_inc(enum omap_plane plane, s32 inc) +{ + dispc_write_reg(DISPC_OVL_ROW_INC(plane), inc); +} + +static void dispc_ovl_set_color_mode(enum omap_plane plane, + enum omap_color_mode color_mode) +{ + u32 m = 0; + if (plane != OMAP_DSS_GFX) { + switch (color_mode) { + case OMAP_DSS_COLOR_NV12: + m = 0x0; break; + case OMAP_DSS_COLOR_RGBX16: + m = 0x1; break; + case OMAP_DSS_COLOR_RGBA16: + m = 0x2; break; + case OMAP_DSS_COLOR_RGB12U: + m = 0x4; break; + case OMAP_DSS_COLOR_ARGB16: + m = 0x5; break; + case OMAP_DSS_COLOR_RGB16: + m = 0x6; break; + case OMAP_DSS_COLOR_ARGB16_1555: + m = 0x7; break; + case OMAP_DSS_COLOR_RGB24U: + m = 0x8; break; + case OMAP_DSS_COLOR_RGB24P: + m = 0x9; break; + case OMAP_DSS_COLOR_YUV2: + m = 0xa; break; + case OMAP_DSS_COLOR_UYVY: + m = 0xb; break; + case OMAP_DSS_COLOR_ARGB32: + m = 0xc; break; + case OMAP_DSS_COLOR_RGBA32: + m = 0xd; break; + case OMAP_DSS_COLOR_RGBX32: + m = 0xe; break; + case OMAP_DSS_COLOR_XRGB16_1555: + m = 0xf; break; + default: + BUG(); return; + } + } else { + switch (color_mode) { + case OMAP_DSS_COLOR_CLUT1: + m = 0x0; break; + case OMAP_DSS_COLOR_CLUT2: + m = 0x1; break; + case OMAP_DSS_COLOR_CLUT4: + m = 0x2; break; + case OMAP_DSS_COLOR_CLUT8: + m = 0x3; break; + case OMAP_DSS_COLOR_RGB12U: + m = 0x4; break; + case OMAP_DSS_COLOR_ARGB16: + m = 0x5; break; + case OMAP_DSS_COLOR_RGB16: + m = 0x6; break; + case OMAP_DSS_COLOR_ARGB16_1555: + m = 0x7; break; + case OMAP_DSS_COLOR_RGB24U: + m = 0x8; break; + case OMAP_DSS_COLOR_RGB24P: + m = 0x9; break; + case OMAP_DSS_COLOR_RGBX16: + m = 0xa; break; + case OMAP_DSS_COLOR_RGBA16: + m = 0xb; break; + case OMAP_DSS_COLOR_ARGB32: + m = 0xc; break; + case OMAP_DSS_COLOR_RGBA32: + m = 0xd; break; + case OMAP_DSS_COLOR_RGBX32: + m = 0xe; break; + case OMAP_DSS_COLOR_XRGB16_1555: + m = 0xf; break; + default: + BUG(); return; + } + } + + REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), m, 4, 1); +} + +static void dispc_ovl_configure_burst_type(enum omap_plane plane, + enum omap_dss_rotation_type rotation_type) +{ + if (!dss_has_feature(FEAT_BURST_2D)) + return; + + if (rotation_type == OMAP_DSS_ROT_TILER) + REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), 1, 29, 29); + else + REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), 0, 29, 29); +} + +void dispc_ovl_set_channel_out(enum omap_plane plane, enum omap_channel channel) +{ + int shift; + u32 val; + int chan = 0, chan2 = 0; + + switch (plane) { + case OMAP_DSS_GFX: + shift = 8; + break; + case OMAP_DSS_VIDEO1: + case OMAP_DSS_VIDEO2: + case OMAP_DSS_VIDEO3: + shift = 16; + break; + default: + BUG(); + return; + } + + val = dispc_read_reg(DISPC_OVL_ATTRIBUTES(plane)); + if (dss_has_feature(FEAT_MGR_LCD2)) { + switch (channel) { + case OMAP_DSS_CHANNEL_LCD: + chan = 0; + chan2 = 0; + break; + case OMAP_DSS_CHANNEL_DIGIT: + chan = 1; + chan2 = 0; + break; + case OMAP_DSS_CHANNEL_LCD2: + chan = 0; + chan2 = 1; + break; + case OMAP_DSS_CHANNEL_LCD3: + if (dss_has_feature(FEAT_MGR_LCD3)) { + chan = 0; + chan2 = 2; + } else { + BUG(); + return; + } + break; + case OMAP_DSS_CHANNEL_WB: + chan = 0; + chan2 = 3; + break; + default: + BUG(); + return; + } + + val = FLD_MOD(val, chan, shift, shift); + val = FLD_MOD(val, chan2, 31, 30); + } else { + val = FLD_MOD(val, channel, shift, shift); + } + dispc_write_reg(DISPC_OVL_ATTRIBUTES(plane), val); +} +EXPORT_SYMBOL(dispc_ovl_set_channel_out); + +static enum omap_channel dispc_ovl_get_channel_out(enum omap_plane plane) +{ + int shift; + u32 val; + + switch (plane) { + case OMAP_DSS_GFX: + shift = 8; + break; + case OMAP_DSS_VIDEO1: + case OMAP_DSS_VIDEO2: + case OMAP_DSS_VIDEO3: + shift = 16; + break; + default: + BUG(); + return 0; + } + + val = dispc_read_reg(DISPC_OVL_ATTRIBUTES(plane)); + + if (FLD_GET(val, shift, shift) == 1) + return OMAP_DSS_CHANNEL_DIGIT; + + if (!dss_has_feature(FEAT_MGR_LCD2)) + return OMAP_DSS_CHANNEL_LCD; + + switch (FLD_GET(val, 31, 30)) { + case 0: + default: + return OMAP_DSS_CHANNEL_LCD; + case 1: + return OMAP_DSS_CHANNEL_LCD2; + case 2: + return OMAP_DSS_CHANNEL_LCD3; + case 3: + return OMAP_DSS_CHANNEL_WB; + } +} + +static void dispc_ovl_set_burst_size(enum omap_plane plane, + enum omap_burst_size burst_size) +{ + static const unsigned shifts[] = { 6, 14, 14, 14, 14, }; + int shift; + + shift = shifts[plane]; + REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), burst_size, shift + 1, shift); +} + +static void dispc_configure_burst_sizes(void) +{ + int i; + const int burst_size = BURST_SIZE_X8; + + /* Configure burst size always to maximum size */ + for (i = 0; i < dss_feat_get_num_ovls(); ++i) + dispc_ovl_set_burst_size(i, burst_size); + if (dispc.feat->has_writeback) + dispc_ovl_set_burst_size(OMAP_DSS_WB, burst_size); +} + +static u32 dispc_ovl_get_burst_size(enum omap_plane plane) +{ + unsigned unit = dss_feat_get_burst_size_unit(); + /* burst multiplier is always x8 (see dispc_configure_burst_sizes()) */ + return unit * 8; +} + +void dispc_enable_gamma_table(bool enable) +{ + /* + * This is partially implemented to support only disabling of + * the gamma table. + */ + if (enable) { + DSSWARN("Gamma table enabling for TV not yet supported"); + return; + } + + REG_FLD_MOD(DISPC_CONFIG, enable, 9, 9); +} + +static void dispc_mgr_enable_cpr(enum omap_channel channel, bool enable) +{ + if (channel == OMAP_DSS_CHANNEL_DIGIT) + return; + + mgr_fld_write(channel, DISPC_MGR_FLD_CPR, enable); +} + +static void dispc_mgr_set_cpr_coef(enum omap_channel channel, + const struct omap_dss_cpr_coefs *coefs) +{ + u32 coef_r, coef_g, coef_b; + + if (!dss_mgr_is_lcd(channel)) + return; + + coef_r = FLD_VAL(coefs->rr, 31, 22) | FLD_VAL(coefs->rg, 20, 11) | + FLD_VAL(coefs->rb, 9, 0); + coef_g = FLD_VAL(coefs->gr, 31, 22) | FLD_VAL(coefs->gg, 20, 11) | + FLD_VAL(coefs->gb, 9, 0); + coef_b = FLD_VAL(coefs->br, 31, 22) | FLD_VAL(coefs->bg, 20, 11) | + FLD_VAL(coefs->bb, 9, 0); + + dispc_write_reg(DISPC_CPR_COEF_R(channel), coef_r); + dispc_write_reg(DISPC_CPR_COEF_G(channel), coef_g); + dispc_write_reg(DISPC_CPR_COEF_B(channel), coef_b); +} + +static void dispc_ovl_set_vid_color_conv(enum omap_plane plane, bool enable) +{ + u32 val; + + BUG_ON(plane == OMAP_DSS_GFX); + + val = dispc_read_reg(DISPC_OVL_ATTRIBUTES(plane)); + val = FLD_MOD(val, enable, 9, 9); + dispc_write_reg(DISPC_OVL_ATTRIBUTES(plane), val); +} + +static void dispc_ovl_enable_replication(enum omap_plane plane, + enum omap_overlay_caps caps, bool enable) +{ + static const unsigned shifts[] = { 5, 10, 10, 10 }; + int shift; + + if ((caps & OMAP_DSS_OVL_CAP_REPLICATION) == 0) + return; + + shift = shifts[plane]; + REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), enable, shift, shift); +} + +static void dispc_mgr_set_size(enum omap_channel channel, u16 width, + u16 height) +{ + u32 val; + + val = FLD_VAL(height - 1, dispc.feat->mgr_height_start, 16) | + FLD_VAL(width - 1, dispc.feat->mgr_width_start, 0); + + dispc_write_reg(DISPC_SIZE_MGR(channel), val); +} + +static void dispc_init_fifos(void) +{ + u32 size; + int fifo; + u8 start, end; + u32 unit; + int i; + + unit = dss_feat_get_buffer_size_unit(); + + dss_feat_get_reg_field(FEAT_REG_FIFOSIZE, &start, &end); + + for (fifo = 0; fifo < dispc.feat->num_fifos; ++fifo) { + size = REG_GET(DISPC_OVL_FIFO_SIZE_STATUS(fifo), start, end); + size *= unit; + dispc.fifo_size[fifo] = size; + + /* + * By default fifos are mapped directly to overlays, fifo 0 to + * ovl 0, fifo 1 to ovl 1, etc. + */ + dispc.fifo_assignment[fifo] = fifo; + } + + /* + * The GFX fifo on OMAP4 is smaller than the other fifos. The small fifo + * causes problems with certain use cases, like using the tiler in 2D + * mode. The below hack swaps the fifos of GFX and WB planes, thus + * giving GFX plane a larger fifo. WB but should work fine with a + * smaller fifo. + */ + if (dispc.feat->gfx_fifo_workaround) { + u32 v; + + v = dispc_read_reg(DISPC_GLOBAL_BUFFER); + + v = FLD_MOD(v, 4, 2, 0); /* GFX BUF top to WB */ + v = FLD_MOD(v, 4, 5, 3); /* GFX BUF bottom to WB */ + v = FLD_MOD(v, 0, 26, 24); /* WB BUF top to GFX */ + v = FLD_MOD(v, 0, 29, 27); /* WB BUF bottom to GFX */ + + dispc_write_reg(DISPC_GLOBAL_BUFFER, v); + + dispc.fifo_assignment[OMAP_DSS_GFX] = OMAP_DSS_WB; + dispc.fifo_assignment[OMAP_DSS_WB] = OMAP_DSS_GFX; + } + + /* + * Setup default fifo thresholds. + */ + for (i = 0; i < dss_feat_get_num_ovls(); ++i) { + u32 low, high; + const bool use_fifomerge = false; + const bool manual_update = false; + + dispc_ovl_compute_fifo_thresholds(i, &low, &high, + use_fifomerge, manual_update); + + dispc_ovl_set_fifo_threshold(i, low, high); + } + + if (dispc.feat->has_writeback) { + u32 low, high; + const bool use_fifomerge = false; + const bool manual_update = false; + + dispc_ovl_compute_fifo_thresholds(OMAP_DSS_WB, &low, &high, + use_fifomerge, manual_update); + + dispc_ovl_set_fifo_threshold(OMAP_DSS_WB, low, high); + } +} + +static u32 dispc_ovl_get_fifo_size(enum omap_plane plane) +{ + int fifo; + u32 size = 0; + + for (fifo = 0; fifo < dispc.feat->num_fifos; ++fifo) { + if (dispc.fifo_assignment[fifo] == plane) + size += dispc.fifo_size[fifo]; + } + + return size; +} + +void dispc_ovl_set_fifo_threshold(enum omap_plane plane, u32 low, u32 high) +{ + u8 hi_start, hi_end, lo_start, lo_end; + u32 unit; + + unit = dss_feat_get_buffer_size_unit(); + + WARN_ON(low % unit != 0); + WARN_ON(high % unit != 0); + + low /= unit; + high /= unit; + + dss_feat_get_reg_field(FEAT_REG_FIFOHIGHTHRESHOLD, &hi_start, &hi_end); + dss_feat_get_reg_field(FEAT_REG_FIFOLOWTHRESHOLD, &lo_start, &lo_end); + + DSSDBG("fifo(%d) threshold (bytes), old %u/%u, new %u/%u\n", + plane, + REG_GET(DISPC_OVL_FIFO_THRESHOLD(plane), + lo_start, lo_end) * unit, + REG_GET(DISPC_OVL_FIFO_THRESHOLD(plane), + hi_start, hi_end) * unit, + low * unit, high * unit); + + dispc_write_reg(DISPC_OVL_FIFO_THRESHOLD(plane), + FLD_VAL(high, hi_start, hi_end) | + FLD_VAL(low, lo_start, lo_end)); + + /* + * configure the preload to the pipeline's high threhold, if HT it's too + * large for the preload field, set the threshold to the maximum value + * that can be held by the preload register + */ + if (dss_has_feature(FEAT_PRELOAD) && dispc.feat->set_max_preload && + plane != OMAP_DSS_WB) + dispc_write_reg(DISPC_OVL_PRELOAD(plane), min(high, 0xfffu)); +} + +void dispc_enable_fifomerge(bool enable) +{ + if (!dss_has_feature(FEAT_FIFO_MERGE)) { + WARN_ON(enable); + return; + } + + DSSDBG("FIFO merge %s\n", enable ? "enabled" : "disabled"); + REG_FLD_MOD(DISPC_CONFIG, enable ? 1 : 0, 14, 14); +} + +void dispc_ovl_compute_fifo_thresholds(enum omap_plane plane, + u32 *fifo_low, u32 *fifo_high, bool use_fifomerge, + bool manual_update) +{ + /* + * All sizes are in bytes. Both the buffer and burst are made of + * buffer_units, and the fifo thresholds must be buffer_unit aligned. + */ + + unsigned buf_unit = dss_feat_get_buffer_size_unit(); + unsigned ovl_fifo_size, total_fifo_size, burst_size; + int i; + + burst_size = dispc_ovl_get_burst_size(plane); + ovl_fifo_size = dispc_ovl_get_fifo_size(plane); + + if (use_fifomerge) { + total_fifo_size = 0; + for (i = 0; i < dss_feat_get_num_ovls(); ++i) + total_fifo_size += dispc_ovl_get_fifo_size(i); + } else { + total_fifo_size = ovl_fifo_size; + } + + /* + * We use the same low threshold for both fifomerge and non-fifomerge + * cases, but for fifomerge we calculate the high threshold using the + * combined fifo size + */ + + if (manual_update && dss_has_feature(FEAT_OMAP3_DSI_FIFO_BUG)) { + *fifo_low = ovl_fifo_size - burst_size * 2; + *fifo_high = total_fifo_size - burst_size; + } else if (plane == OMAP_DSS_WB) { + /* + * Most optimal configuration for writeback is to push out data + * to the interconnect the moment writeback pushes enough pixels + * in the FIFO to form a burst + */ + *fifo_low = 0; + *fifo_high = burst_size; + } else { + *fifo_low = ovl_fifo_size - burst_size; + *fifo_high = total_fifo_size - buf_unit; + } +} + +static void dispc_ovl_set_mflag(enum omap_plane plane, bool enable) +{ + int bit; + + if (plane == OMAP_DSS_GFX) + bit = 14; + else + bit = 23; + + REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), enable, bit, bit); +} + +static void dispc_ovl_set_mflag_threshold(enum omap_plane plane, + int low, int high) +{ + dispc_write_reg(DISPC_OVL_MFLAG_THRESHOLD(plane), + FLD_VAL(high, 31, 16) | FLD_VAL(low, 15, 0)); +} + +static void dispc_init_mflag(void) +{ + int i; + + /* + * HACK: NV12 color format and MFLAG seem to have problems working + * together: using two displays, and having an NV12 overlay on one of + * the displays will cause underflows/synclosts when MFLAG_CTRL=2. + * Changing MFLAG thresholds and PRELOAD to certain values seem to + * remove the errors, but there doesn't seem to be a clear logic on + * which values work and which not. + * + * As a work-around, set force MFLAG to always on. + */ + dispc_write_reg(DISPC_GLOBAL_MFLAG_ATTRIBUTE, + (1 << 0) | /* MFLAG_CTRL = force always on */ + (0 << 2)); /* MFLAG_START = disable */ + + for (i = 0; i < dss_feat_get_num_ovls(); ++i) { + u32 size = dispc_ovl_get_fifo_size(i); + u32 unit = dss_feat_get_buffer_size_unit(); + u32 low, high; + + dispc_ovl_set_mflag(i, true); + + /* + * Simulation team suggests below thesholds: + * HT = fifosize * 5 / 8; + * LT = fifosize * 4 / 8; + */ + + low = size * 4 / 8 / unit; + high = size * 5 / 8 / unit; + + dispc_ovl_set_mflag_threshold(i, low, high); + } + + if (dispc.feat->has_writeback) { + u32 size = dispc_ovl_get_fifo_size(OMAP_DSS_WB); + u32 unit = dss_feat_get_buffer_size_unit(); + u32 low, high; + + dispc_ovl_set_mflag(OMAP_DSS_WB, true); + + /* + * Simulation team suggests below thesholds: + * HT = fifosize * 5 / 8; + * LT = fifosize * 4 / 8; + */ + + low = size * 4 / 8 / unit; + high = size * 5 / 8 / unit; + + dispc_ovl_set_mflag_threshold(OMAP_DSS_WB, low, high); + } +} + +static void dispc_ovl_set_fir(enum omap_plane plane, + int hinc, int vinc, + enum omap_color_component color_comp) +{ + u32 val; + + if (color_comp == DISPC_COLOR_COMPONENT_RGB_Y) { + u8 hinc_start, hinc_end, vinc_start, vinc_end; + + dss_feat_get_reg_field(FEAT_REG_FIRHINC, + &hinc_start, &hinc_end); + dss_feat_get_reg_field(FEAT_REG_FIRVINC, + &vinc_start, &vinc_end); + val = FLD_VAL(vinc, vinc_start, vinc_end) | + FLD_VAL(hinc, hinc_start, hinc_end); + + dispc_write_reg(DISPC_OVL_FIR(plane), val); + } else { + val = FLD_VAL(vinc, 28, 16) | FLD_VAL(hinc, 12, 0); + dispc_write_reg(DISPC_OVL_FIR2(plane), val); + } +} + +static void dispc_ovl_set_vid_accu0(enum omap_plane plane, int haccu, int vaccu) +{ + u32 val; + u8 hor_start, hor_end, vert_start, vert_end; + + dss_feat_get_reg_field(FEAT_REG_HORIZONTALACCU, &hor_start, &hor_end); + dss_feat_get_reg_field(FEAT_REG_VERTICALACCU, &vert_start, &vert_end); + + val = FLD_VAL(vaccu, vert_start, vert_end) | + FLD_VAL(haccu, hor_start, hor_end); + + dispc_write_reg(DISPC_OVL_ACCU0(plane), val); +} + +static void dispc_ovl_set_vid_accu1(enum omap_plane plane, int haccu, int vaccu) +{ + u32 val; + u8 hor_start, hor_end, vert_start, vert_end; + + dss_feat_get_reg_field(FEAT_REG_HORIZONTALACCU, &hor_start, &hor_end); + dss_feat_get_reg_field(FEAT_REG_VERTICALACCU, &vert_start, &vert_end); + + val = FLD_VAL(vaccu, vert_start, vert_end) | + FLD_VAL(haccu, hor_start, hor_end); + + dispc_write_reg(DISPC_OVL_ACCU1(plane), val); +} + +static void dispc_ovl_set_vid_accu2_0(enum omap_plane plane, int haccu, + int vaccu) +{ + u32 val; + + val = FLD_VAL(vaccu, 26, 16) | FLD_VAL(haccu, 10, 0); + dispc_write_reg(DISPC_OVL_ACCU2_0(plane), val); +} + +static void dispc_ovl_set_vid_accu2_1(enum omap_plane plane, int haccu, + int vaccu) +{ + u32 val; + + val = FLD_VAL(vaccu, 26, 16) | FLD_VAL(haccu, 10, 0); + dispc_write_reg(DISPC_OVL_ACCU2_1(plane), val); +} + +static void dispc_ovl_set_scale_param(enum omap_plane plane, + u16 orig_width, u16 orig_height, + u16 out_width, u16 out_height, + bool five_taps, u8 rotation, + enum omap_color_component color_comp) +{ + int fir_hinc, fir_vinc; + + fir_hinc = 1024 * orig_width / out_width; + fir_vinc = 1024 * orig_height / out_height; + + dispc_ovl_set_scale_coef(plane, fir_hinc, fir_vinc, five_taps, + color_comp); + dispc_ovl_set_fir(plane, fir_hinc, fir_vinc, color_comp); +} + +static void dispc_ovl_set_accu_uv(enum omap_plane plane, + u16 orig_width, u16 orig_height, u16 out_width, u16 out_height, + bool ilace, enum omap_color_mode color_mode, u8 rotation) +{ + int h_accu2_0, h_accu2_1; + int v_accu2_0, v_accu2_1; + int chroma_hinc, chroma_vinc; + int idx; + + struct accu { + s8 h0_m, h0_n; + s8 h1_m, h1_n; + s8 v0_m, v0_n; + s8 v1_m, v1_n; + }; + + const struct accu *accu_table; + const struct accu *accu_val; + + static const struct accu accu_nv12[4] = { + { 0, 1, 0, 1 , -1, 2, 0, 1 }, + { 1, 2, -3, 4 , 0, 1, 0, 1 }, + { -1, 1, 0, 1 , -1, 2, 0, 1 }, + { -1, 2, -1, 2 , -1, 1, 0, 1 }, + }; + + static const struct accu accu_nv12_ilace[4] = { + { 0, 1, 0, 1 , -3, 4, -1, 4 }, + { -1, 4, -3, 4 , 0, 1, 0, 1 }, + { -1, 1, 0, 1 , -1, 4, -3, 4 }, + { -3, 4, -3, 4 , -1, 1, 0, 1 }, + }; + + static const struct accu accu_yuv[4] = { + { 0, 1, 0, 1, 0, 1, 0, 1 }, + { 0, 1, 0, 1, 0, 1, 0, 1 }, + { -1, 1, 0, 1, 0, 1, 0, 1 }, + { 0, 1, 0, 1, -1, 1, 0, 1 }, + }; + + switch (rotation) { + case OMAP_DSS_ROT_0: + idx = 0; + break; + case OMAP_DSS_ROT_90: + idx = 1; + break; + case OMAP_DSS_ROT_180: + idx = 2; + break; + case OMAP_DSS_ROT_270: + idx = 3; + break; + default: + BUG(); + return; + } + + switch (color_mode) { + case OMAP_DSS_COLOR_NV12: + if (ilace) + accu_table = accu_nv12_ilace; + else + accu_table = accu_nv12; + break; + case OMAP_DSS_COLOR_YUV2: + case OMAP_DSS_COLOR_UYVY: + accu_table = accu_yuv; + break; + default: + BUG(); + return; + } + + accu_val = &accu_table[idx]; + + chroma_hinc = 1024 * orig_width / out_width; + chroma_vinc = 1024 * orig_height / out_height; + + h_accu2_0 = (accu_val->h0_m * chroma_hinc / accu_val->h0_n) % 1024; + h_accu2_1 = (accu_val->h1_m * chroma_hinc / accu_val->h1_n) % 1024; + v_accu2_0 = (accu_val->v0_m * chroma_vinc / accu_val->v0_n) % 1024; + v_accu2_1 = (accu_val->v1_m * chroma_vinc / accu_val->v1_n) % 1024; + + dispc_ovl_set_vid_accu2_0(plane, h_accu2_0, v_accu2_0); + dispc_ovl_set_vid_accu2_1(plane, h_accu2_1, v_accu2_1); +} + +static void dispc_ovl_set_scaling_common(enum omap_plane plane, + u16 orig_width, u16 orig_height, + u16 out_width, u16 out_height, + bool ilace, bool five_taps, + bool fieldmode, enum omap_color_mode color_mode, + u8 rotation) +{ + int accu0 = 0; + int accu1 = 0; + u32 l; + + dispc_ovl_set_scale_param(plane, orig_width, orig_height, + out_width, out_height, five_taps, + rotation, DISPC_COLOR_COMPONENT_RGB_Y); + l = dispc_read_reg(DISPC_OVL_ATTRIBUTES(plane)); + + /* RESIZEENABLE and VERTICALTAPS */ + l &= ~((0x3 << 5) | (0x1 << 21)); + l |= (orig_width != out_width) ? (1 << 5) : 0; + l |= (orig_height != out_height) ? (1 << 6) : 0; + l |= five_taps ? (1 << 21) : 0; + + /* VRESIZECONF and HRESIZECONF */ + if (dss_has_feature(FEAT_RESIZECONF)) { + l &= ~(0x3 << 7); + l |= (orig_width <= out_width) ? 0 : (1 << 7); + l |= (orig_height <= out_height) ? 0 : (1 << 8); + } + + /* LINEBUFFERSPLIT */ + if (dss_has_feature(FEAT_LINEBUFFERSPLIT)) { + l &= ~(0x1 << 22); + l |= five_taps ? (1 << 22) : 0; + } + + dispc_write_reg(DISPC_OVL_ATTRIBUTES(plane), l); + + /* + * field 0 = even field = bottom field + * field 1 = odd field = top field + */ + if (ilace && !fieldmode) { + accu1 = 0; + accu0 = ((1024 * orig_height / out_height) / 2) & 0x3ff; + if (accu0 >= 1024/2) { + accu1 = 1024/2; + accu0 -= accu1; + } + } + + dispc_ovl_set_vid_accu0(plane, 0, accu0); + dispc_ovl_set_vid_accu1(plane, 0, accu1); +} + +static void dispc_ovl_set_scaling_uv(enum omap_plane plane, + u16 orig_width, u16 orig_height, + u16 out_width, u16 out_height, + bool ilace, bool five_taps, + bool fieldmode, enum omap_color_mode color_mode, + u8 rotation) +{ + int scale_x = out_width != orig_width; + int scale_y = out_height != orig_height; + bool chroma_upscale = plane != OMAP_DSS_WB; + + if (!dss_has_feature(FEAT_HANDLE_UV_SEPARATE)) + return; + if ((color_mode != OMAP_DSS_COLOR_YUV2 && + color_mode != OMAP_DSS_COLOR_UYVY && + color_mode != OMAP_DSS_COLOR_NV12)) { + /* reset chroma resampling for RGB formats */ + if (plane != OMAP_DSS_WB) + REG_FLD_MOD(DISPC_OVL_ATTRIBUTES2(plane), 0, 8, 8); + return; + } + + dispc_ovl_set_accu_uv(plane, orig_width, orig_height, out_width, + out_height, ilace, color_mode, rotation); + + switch (color_mode) { + case OMAP_DSS_COLOR_NV12: + if (chroma_upscale) { + /* UV is subsampled by 2 horizontally and vertically */ + orig_height >>= 1; + orig_width >>= 1; + } else { + /* UV is downsampled by 2 horizontally and vertically */ + orig_height <<= 1; + orig_width <<= 1; + } + + break; + case OMAP_DSS_COLOR_YUV2: + case OMAP_DSS_COLOR_UYVY: + /* For YUV422 with 90/270 rotation, we don't upsample chroma */ + if (rotation == OMAP_DSS_ROT_0 || + rotation == OMAP_DSS_ROT_180) { + if (chroma_upscale) + /* UV is subsampled by 2 horizontally */ + orig_width >>= 1; + else + /* UV is downsampled by 2 horizontally */ + orig_width <<= 1; + } + + /* must use FIR for YUV422 if rotated */ + if (rotation != OMAP_DSS_ROT_0) + scale_x = scale_y = true; + + break; + default: + BUG(); + return; + } + + if (out_width != orig_width) + scale_x = true; + if (out_height != orig_height) + scale_y = true; + + dispc_ovl_set_scale_param(plane, orig_width, orig_height, + out_width, out_height, five_taps, + rotation, DISPC_COLOR_COMPONENT_UV); + + if (plane != OMAP_DSS_WB) + REG_FLD_MOD(DISPC_OVL_ATTRIBUTES2(plane), + (scale_x || scale_y) ? 1 : 0, 8, 8); + + /* set H scaling */ + REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), scale_x ? 1 : 0, 5, 5); + /* set V scaling */ + REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), scale_y ? 1 : 0, 6, 6); +} + +static void dispc_ovl_set_scaling(enum omap_plane plane, + u16 orig_width, u16 orig_height, + u16 out_width, u16 out_height, + bool ilace, bool five_taps, + bool fieldmode, enum omap_color_mode color_mode, + u8 rotation) +{ + BUG_ON(plane == OMAP_DSS_GFX); + + dispc_ovl_set_scaling_common(plane, + orig_width, orig_height, + out_width, out_height, + ilace, five_taps, + fieldmode, color_mode, + rotation); + + dispc_ovl_set_scaling_uv(plane, + orig_width, orig_height, + out_width, out_height, + ilace, five_taps, + fieldmode, color_mode, + rotation); +} + +static void dispc_ovl_set_rotation_attrs(enum omap_plane plane, u8 rotation, + enum omap_dss_rotation_type rotation_type, + bool mirroring, enum omap_color_mode color_mode) +{ + bool row_repeat = false; + int vidrot = 0; + + if (color_mode == OMAP_DSS_COLOR_YUV2 || + color_mode == OMAP_DSS_COLOR_UYVY) { + + if (mirroring) { + switch (rotation) { + case OMAP_DSS_ROT_0: + vidrot = 2; + break; + case OMAP_DSS_ROT_90: + vidrot = 1; + break; + case OMAP_DSS_ROT_180: + vidrot = 0; + break; + case OMAP_DSS_ROT_270: + vidrot = 3; + break; + } + } else { + switch (rotation) { + case OMAP_DSS_ROT_0: + vidrot = 0; + break; + case OMAP_DSS_ROT_90: + vidrot = 1; + break; + case OMAP_DSS_ROT_180: + vidrot = 2; + break; + case OMAP_DSS_ROT_270: + vidrot = 3; + break; + } + } + + if (rotation == OMAP_DSS_ROT_90 || rotation == OMAP_DSS_ROT_270) + row_repeat = true; + else + row_repeat = false; + } + + /* + * OMAP4/5 Errata i631: + * NV12 in 1D mode must use ROTATION=1. Otherwise DSS will fetch extra + * rows beyond the framebuffer, which may cause OCP error. + */ + if (color_mode == OMAP_DSS_COLOR_NV12 && + rotation_type != OMAP_DSS_ROT_TILER) + vidrot = 1; + + REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), vidrot, 13, 12); + if (dss_has_feature(FEAT_ROWREPEATENABLE)) + REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), + row_repeat ? 1 : 0, 18, 18); + + if (color_mode == OMAP_DSS_COLOR_NV12) { + bool doublestride = (rotation_type == OMAP_DSS_ROT_TILER) && + (rotation == OMAP_DSS_ROT_0 || + rotation == OMAP_DSS_ROT_180); + /* DOUBLESTRIDE */ + REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), doublestride, 22, 22); + } + +} + +static int color_mode_to_bpp(enum omap_color_mode color_mode) +{ + switch (color_mode) { + case OMAP_DSS_COLOR_CLUT1: + return 1; + case OMAP_DSS_COLOR_CLUT2: + return 2; + case OMAP_DSS_COLOR_CLUT4: + return 4; + case OMAP_DSS_COLOR_CLUT8: + case OMAP_DSS_COLOR_NV12: + return 8; + case OMAP_DSS_COLOR_RGB12U: + case OMAP_DSS_COLOR_RGB16: + case OMAP_DSS_COLOR_ARGB16: + case OMAP_DSS_COLOR_YUV2: + case OMAP_DSS_COLOR_UYVY: + case OMAP_DSS_COLOR_RGBA16: + case OMAP_DSS_COLOR_RGBX16: + case OMAP_DSS_COLOR_ARGB16_1555: + case OMAP_DSS_COLOR_XRGB16_1555: + return 16; + case OMAP_DSS_COLOR_RGB24P: + return 24; + case OMAP_DSS_COLOR_RGB24U: + case OMAP_DSS_COLOR_ARGB32: + case OMAP_DSS_COLOR_RGBA32: + case OMAP_DSS_COLOR_RGBX32: + return 32; + default: + BUG(); + return 0; + } +} + +static s32 pixinc(int pixels, u8 ps) +{ + if (pixels == 1) + return 1; + else if (pixels > 1) + return 1 + (pixels - 1) * ps; + else if (pixels < 0) + return 1 - (-pixels + 1) * ps; + else + BUG(); + return 0; +} + +static void calc_vrfb_rotation_offset(u8 rotation, bool mirror, + u16 screen_width, + u16 width, u16 height, + enum omap_color_mode color_mode, bool fieldmode, + unsigned int field_offset, + unsigned *offset0, unsigned *offset1, + s32 *row_inc, s32 *pix_inc, int x_predecim, int y_predecim) +{ + u8 ps; + + /* FIXME CLUT formats */ + switch (color_mode) { + case OMAP_DSS_COLOR_CLUT1: + case OMAP_DSS_COLOR_CLUT2: + case OMAP_DSS_COLOR_CLUT4: + case OMAP_DSS_COLOR_CLUT8: + BUG(); + return; + case OMAP_DSS_COLOR_YUV2: + case OMAP_DSS_COLOR_UYVY: + ps = 4; + break; + default: + ps = color_mode_to_bpp(color_mode) / 8; + break; + } + + DSSDBG("calc_rot(%d): scrw %d, %dx%d\n", rotation, screen_width, + width, height); + + /* + * field 0 = even field = bottom field + * field 1 = odd field = top field + */ + switch (rotation + mirror * 4) { + case OMAP_DSS_ROT_0: + case OMAP_DSS_ROT_180: + /* + * If the pixel format is YUV or UYVY divide the width + * of the image by 2 for 0 and 180 degree rotation. + */ + if (color_mode == OMAP_DSS_COLOR_YUV2 || + color_mode == OMAP_DSS_COLOR_UYVY) + width = width >> 1; + fallthrough; + case OMAP_DSS_ROT_90: + case OMAP_DSS_ROT_270: + *offset1 = 0; + if (field_offset) + *offset0 = field_offset * screen_width * ps; + else + *offset0 = 0; + + *row_inc = pixinc(1 + + (y_predecim * screen_width - x_predecim * width) + + (fieldmode ? screen_width : 0), ps); + *pix_inc = pixinc(x_predecim, ps); + break; + + case OMAP_DSS_ROT_0 + 4: + case OMAP_DSS_ROT_180 + 4: + /* If the pixel format is YUV or UYVY divide the width + * of the image by 2 for 0 degree and 180 degree + */ + if (color_mode == OMAP_DSS_COLOR_YUV2 || + color_mode == OMAP_DSS_COLOR_UYVY) + width = width >> 1; + fallthrough; + case OMAP_DSS_ROT_90 + 4: + case OMAP_DSS_ROT_270 + 4: + *offset1 = 0; + if (field_offset) + *offset0 = field_offset * screen_width * ps; + else + *offset0 = 0; + *row_inc = pixinc(1 - + (y_predecim * screen_width + x_predecim * width) - + (fieldmode ? screen_width : 0), ps); + *pix_inc = pixinc(x_predecim, ps); + break; + + default: + BUG(); + return; + } +} + +static void calc_dma_rotation_offset(u8 rotation, bool mirror, + u16 screen_width, + u16 width, u16 height, + enum omap_color_mode color_mode, bool fieldmode, + unsigned int field_offset, + unsigned *offset0, unsigned *offset1, + s32 *row_inc, s32 *pix_inc, int x_predecim, int y_predecim) +{ + u8 ps; + u16 fbw, fbh; + + /* FIXME CLUT formats */ + switch (color_mode) { + case OMAP_DSS_COLOR_CLUT1: + case OMAP_DSS_COLOR_CLUT2: + case OMAP_DSS_COLOR_CLUT4: + case OMAP_DSS_COLOR_CLUT8: + BUG(); + return; + default: + ps = color_mode_to_bpp(color_mode) / 8; + break; + } + + DSSDBG("calc_rot(%d): scrw %d, %dx%d\n", rotation, screen_width, + width, height); + + /* width & height are overlay sizes, convert to fb sizes */ + + if (rotation == OMAP_DSS_ROT_0 || rotation == OMAP_DSS_ROT_180) { + fbw = width; + fbh = height; + } else { + fbw = height; + fbh = width; + } + + /* + * field 0 = even field = bottom field + * field 1 = odd field = top field + */ + switch (rotation + mirror * 4) { + case OMAP_DSS_ROT_0: + *offset1 = 0; + if (field_offset) + *offset0 = *offset1 + field_offset * screen_width * ps; + else + *offset0 = *offset1; + *row_inc = pixinc(1 + + (y_predecim * screen_width - fbw * x_predecim) + + (fieldmode ? screen_width : 0), ps); + if (color_mode == OMAP_DSS_COLOR_YUV2 || + color_mode == OMAP_DSS_COLOR_UYVY) + *pix_inc = pixinc(x_predecim, 2 * ps); + else + *pix_inc = pixinc(x_predecim, ps); + break; + case OMAP_DSS_ROT_90: + *offset1 = screen_width * (fbh - 1) * ps; + if (field_offset) + *offset0 = *offset1 + field_offset * ps; + else + *offset0 = *offset1; + *row_inc = pixinc(screen_width * (fbh * x_predecim - 1) + + y_predecim + (fieldmode ? 1 : 0), ps); + *pix_inc = pixinc(-x_predecim * screen_width, ps); + break; + case OMAP_DSS_ROT_180: + *offset1 = (screen_width * (fbh - 1) + fbw - 1) * ps; + if (field_offset) + *offset0 = *offset1 - field_offset * screen_width * ps; + else + *offset0 = *offset1; + *row_inc = pixinc(-1 - + (y_predecim * screen_width - fbw * x_predecim) - + (fieldmode ? screen_width : 0), ps); + if (color_mode == OMAP_DSS_COLOR_YUV2 || + color_mode == OMAP_DSS_COLOR_UYVY) + *pix_inc = pixinc(-x_predecim, 2 * ps); + else + *pix_inc = pixinc(-x_predecim, ps); + break; + case OMAP_DSS_ROT_270: + *offset1 = (fbw - 1) * ps; + if (field_offset) + *offset0 = *offset1 - field_offset * ps; + else + *offset0 = *offset1; + *row_inc = pixinc(-screen_width * (fbh * x_predecim - 1) - + y_predecim - (fieldmode ? 1 : 0), ps); + *pix_inc = pixinc(x_predecim * screen_width, ps); + break; + + /* mirroring */ + case OMAP_DSS_ROT_0 + 4: + *offset1 = (fbw - 1) * ps; + if (field_offset) + *offset0 = *offset1 + field_offset * screen_width * ps; + else + *offset0 = *offset1; + *row_inc = pixinc(y_predecim * screen_width * 2 - 1 + + (fieldmode ? screen_width : 0), + ps); + if (color_mode == OMAP_DSS_COLOR_YUV2 || + color_mode == OMAP_DSS_COLOR_UYVY) + *pix_inc = pixinc(-x_predecim, 2 * ps); + else + *pix_inc = pixinc(-x_predecim, ps); + break; + + case OMAP_DSS_ROT_90 + 4: + *offset1 = 0; + if (field_offset) + *offset0 = *offset1 + field_offset * ps; + else + *offset0 = *offset1; + *row_inc = pixinc(-screen_width * (fbh * x_predecim - 1) + + y_predecim + (fieldmode ? 1 : 0), + ps); + *pix_inc = pixinc(x_predecim * screen_width, ps); + break; + + case OMAP_DSS_ROT_180 + 4: + *offset1 = screen_width * (fbh - 1) * ps; + if (field_offset) + *offset0 = *offset1 - field_offset * screen_width * ps; + else + *offset0 = *offset1; + *row_inc = pixinc(1 - y_predecim * screen_width * 2 - + (fieldmode ? screen_width : 0), + ps); + if (color_mode == OMAP_DSS_COLOR_YUV2 || + color_mode == OMAP_DSS_COLOR_UYVY) + *pix_inc = pixinc(x_predecim, 2 * ps); + else + *pix_inc = pixinc(x_predecim, ps); + break; + + case OMAP_DSS_ROT_270 + 4: + *offset1 = (screen_width * (fbh - 1) + fbw - 1) * ps; + if (field_offset) + *offset0 = *offset1 - field_offset * ps; + else + *offset0 = *offset1; + *row_inc = pixinc(screen_width * (fbh * x_predecim - 1) - + y_predecim - (fieldmode ? 1 : 0), + ps); + *pix_inc = pixinc(-x_predecim * screen_width, ps); + break; + + default: + BUG(); + return; + } +} + +static void calc_tiler_rotation_offset(u16 screen_width, u16 width, + enum omap_color_mode color_mode, bool fieldmode, + unsigned int field_offset, unsigned *offset0, unsigned *offset1, + s32 *row_inc, s32 *pix_inc, int x_predecim, int y_predecim) +{ + u8 ps; + + switch (color_mode) { + case OMAP_DSS_COLOR_CLUT1: + case OMAP_DSS_COLOR_CLUT2: + case OMAP_DSS_COLOR_CLUT4: + case OMAP_DSS_COLOR_CLUT8: + BUG(); + return; + default: + ps = color_mode_to_bpp(color_mode) / 8; + break; + } + + DSSDBG("scrw %d, width %d\n", screen_width, width); + + /* + * field 0 = even field = bottom field + * field 1 = odd field = top field + */ + *offset1 = 0; + if (field_offset) + *offset0 = *offset1 + field_offset * screen_width * ps; + else + *offset0 = *offset1; + *row_inc = pixinc(1 + (y_predecim * screen_width - width * x_predecim) + + (fieldmode ? screen_width : 0), ps); + if (color_mode == OMAP_DSS_COLOR_YUV2 || + color_mode == OMAP_DSS_COLOR_UYVY) + *pix_inc = pixinc(x_predecim, 2 * ps); + else + *pix_inc = pixinc(x_predecim, ps); +} + +/* + * This function is used to avoid synclosts in OMAP3, because of some + * undocumented horizontal position and timing related limitations. + */ +static int check_horiz_timing_omap3(unsigned long pclk, unsigned long lclk, + const struct omap_video_timings *t, u16 pos_x, + u16 width, u16 height, u16 out_width, u16 out_height, + bool five_taps) +{ + const int ds = DIV_ROUND_UP(height, out_height); + unsigned long nonactive; + static const u8 limits[3] = { 8, 10, 20 }; + u64 val, blank; + int i; + + nonactive = t->x_res + t->hfp + t->hsw + t->hbp - out_width; + + i = 0; + if (out_height < height) + i++; + if (out_width < width) + i++; + blank = div_u64((u64)(t->hbp + t->hsw + t->hfp) * lclk, pclk); + DSSDBG("blanking period + ppl = %llu (limit = %u)\n", blank, limits[i]); + if (blank <= limits[i]) + return -EINVAL; + + /* FIXME add checks for 3-tap filter once the limitations are known */ + if (!five_taps) + return 0; + + /* + * Pixel data should be prepared before visible display point starts. + * So, atleast DS-2 lines must have already been fetched by DISPC + * during nonactive - pos_x period. + */ + val = div_u64((u64)(nonactive - pos_x) * lclk, pclk); + DSSDBG("(nonactive - pos_x) * pcd = %llu max(0, DS - 2) * width = %d\n", + val, max(0, ds - 2) * width); + if (val < max(0, ds - 2) * width) + return -EINVAL; + + /* + * All lines need to be refilled during the nonactive period of which + * only one line can be loaded during the active period. So, atleast + * DS - 1 lines should be loaded during nonactive period. + */ + val = div_u64((u64)nonactive * lclk, pclk); + DSSDBG("nonactive * pcd = %llu, max(0, DS - 1) * width = %d\n", + val, max(0, ds - 1) * width); + if (val < max(0, ds - 1) * width) + return -EINVAL; + + return 0; +} + +static unsigned long calc_core_clk_five_taps(unsigned long pclk, + const struct omap_video_timings *mgr_timings, u16 width, + u16 height, u16 out_width, u16 out_height, + enum omap_color_mode color_mode) +{ + u32 core_clk = 0; + u64 tmp; + + if (height <= out_height && width <= out_width) + return (unsigned long) pclk; + + if (height > out_height) { + unsigned int ppl = mgr_timings->x_res; + + tmp = (u64)pclk * height * out_width; + do_div(tmp, 2 * out_height * ppl); + core_clk = tmp; + + if (height > 2 * out_height) { + if (ppl == out_width) + return 0; + + tmp = (u64)pclk * (height - 2 * out_height) * out_width; + do_div(tmp, 2 * out_height * (ppl - out_width)); + core_clk = max_t(u32, core_clk, tmp); + } + } + + if (width > out_width) { + tmp = (u64)pclk * width; + do_div(tmp, out_width); + core_clk = max_t(u32, core_clk, tmp); + + if (color_mode == OMAP_DSS_COLOR_RGB24U) + core_clk <<= 1; + } + + return core_clk; +} + +static unsigned long calc_core_clk_24xx(unsigned long pclk, u16 width, + u16 height, u16 out_width, u16 out_height, bool mem_to_mem) +{ + if (height > out_height && width > out_width) + return pclk * 4; + else + return pclk * 2; +} + +static unsigned long calc_core_clk_34xx(unsigned long pclk, u16 width, + u16 height, u16 out_width, u16 out_height, bool mem_to_mem) +{ + unsigned int hf, vf; + + /* + * FIXME how to determine the 'A' factor + * for the no downscaling case ? + */ + + if (width > 3 * out_width) + hf = 4; + else if (width > 2 * out_width) + hf = 3; + else if (width > out_width) + hf = 2; + else + hf = 1; + if (height > out_height) + vf = 2; + else + vf = 1; + + return pclk * vf * hf; +} + +static unsigned long calc_core_clk_44xx(unsigned long pclk, u16 width, + u16 height, u16 out_width, u16 out_height, bool mem_to_mem) +{ + /* + * If the overlay/writeback is in mem to mem mode, there are no + * downscaling limitations with respect to pixel clock, return 1 as + * required core clock to represent that we have sufficient enough + * core clock to do maximum downscaling + */ + if (mem_to_mem) + return 1; + + if (width > out_width) + return DIV_ROUND_UP(pclk, out_width) * width; + else + return pclk; +} + +static int dispc_ovl_calc_scaling_24xx(unsigned long pclk, unsigned long lclk, + const struct omap_video_timings *mgr_timings, + u16 width, u16 height, u16 out_width, u16 out_height, + enum omap_color_mode color_mode, bool *five_taps, + int *x_predecim, int *y_predecim, int *decim_x, int *decim_y, + u16 pos_x, unsigned long *core_clk, bool mem_to_mem) +{ + int error; + u16 in_width, in_height; + int min_factor = min(*decim_x, *decim_y); + const int maxsinglelinewidth = + dss_feat_get_param_max(FEAT_PARAM_LINEWIDTH); + + *five_taps = false; + + do { + in_height = height / *decim_y; + in_width = width / *decim_x; + *core_clk = dispc.feat->calc_core_clk(pclk, in_width, + in_height, out_width, out_height, mem_to_mem); + error = (in_width > maxsinglelinewidth || !*core_clk || + *core_clk > dispc_core_clk_rate()); + if (error) { + if (*decim_x == *decim_y) { + *decim_x = min_factor; + ++*decim_y; + } else { + swap(*decim_x, *decim_y); + if (*decim_x < *decim_y) + ++*decim_x; + } + } + } while (*decim_x <= *x_predecim && *decim_y <= *y_predecim && error); + + if (error) { + DSSERR("failed to find scaling settings\n"); + return -EINVAL; + } + + if (in_width > maxsinglelinewidth) { + DSSERR("Cannot scale max input width exceeded"); + return -EINVAL; + } + return 0; +} + +static int dispc_ovl_calc_scaling_34xx(unsigned long pclk, unsigned long lclk, + const struct omap_video_timings *mgr_timings, + u16 width, u16 height, u16 out_width, u16 out_height, + enum omap_color_mode color_mode, bool *five_taps, + int *x_predecim, int *y_predecim, int *decim_x, int *decim_y, + u16 pos_x, unsigned long *core_clk, bool mem_to_mem) +{ + int error; + u16 in_width, in_height; + const int maxsinglelinewidth = + dss_feat_get_param_max(FEAT_PARAM_LINEWIDTH); + + do { + in_height = height / *decim_y; + in_width = width / *decim_x; + *five_taps = in_height > out_height; + + if (in_width > maxsinglelinewidth) + if (in_height > out_height && + in_height < out_height * 2) + *five_taps = false; +again: + if (*five_taps) + *core_clk = calc_core_clk_five_taps(pclk, mgr_timings, + in_width, in_height, out_width, + out_height, color_mode); + else + *core_clk = dispc.feat->calc_core_clk(pclk, in_width, + in_height, out_width, out_height, + mem_to_mem); + + error = check_horiz_timing_omap3(pclk, lclk, mgr_timings, + pos_x, in_width, in_height, out_width, + out_height, *five_taps); + if (error && *five_taps) { + *five_taps = false; + goto again; + } + + error = (error || in_width > maxsinglelinewidth * 2 || + (in_width > maxsinglelinewidth && *five_taps) || + !*core_clk || *core_clk > dispc_core_clk_rate()); + + if (!error) { + /* verify that we're inside the limits of scaler */ + if (in_width / 4 > out_width) + error = 1; + + if (*five_taps) { + if (in_height / 4 > out_height) + error = 1; + } else { + if (in_height / 2 > out_height) + error = 1; + } + } + + if (error) + ++*decim_y; + } while (*decim_x <= *x_predecim && *decim_y <= *y_predecim && error); + + if (error) { + DSSERR("failed to find scaling settings\n"); + return -EINVAL; + } + + if (check_horiz_timing_omap3(pclk, lclk, mgr_timings, pos_x, in_width, + in_height, out_width, out_height, *five_taps)) { + DSSERR("horizontal timing too tight\n"); + return -EINVAL; + } + + if (in_width > (maxsinglelinewidth * 2)) { + DSSERR("Cannot setup scaling"); + DSSERR("width exceeds maximum width possible"); + return -EINVAL; + } + + if (in_width > maxsinglelinewidth && *five_taps) { + DSSERR("cannot setup scaling with five taps"); + return -EINVAL; + } + return 0; +} + +static int dispc_ovl_calc_scaling_44xx(unsigned long pclk, unsigned long lclk, + const struct omap_video_timings *mgr_timings, + u16 width, u16 height, u16 out_width, u16 out_height, + enum omap_color_mode color_mode, bool *five_taps, + int *x_predecim, int *y_predecim, int *decim_x, int *decim_y, + u16 pos_x, unsigned long *core_clk, bool mem_to_mem) +{ + u16 in_width, in_width_max; + int decim_x_min = *decim_x; + u16 in_height = height / *decim_y; + const int maxsinglelinewidth = + dss_feat_get_param_max(FEAT_PARAM_LINEWIDTH); + const int maxdownscale = dss_feat_get_param_max(FEAT_PARAM_DOWNSCALE); + + if (mem_to_mem) { + in_width_max = out_width * maxdownscale; + } else { + in_width_max = dispc_core_clk_rate() / + DIV_ROUND_UP(pclk, out_width); + } + + *decim_x = DIV_ROUND_UP(width, in_width_max); + + *decim_x = *decim_x > decim_x_min ? *decim_x : decim_x_min; + if (*decim_x > *x_predecim) + return -EINVAL; + + do { + in_width = width / *decim_x; + } while (*decim_x <= *x_predecim && + in_width > maxsinglelinewidth && ++*decim_x); + + if (in_width > maxsinglelinewidth) { + DSSERR("Cannot scale width exceeds max line width"); + return -EINVAL; + } + + *core_clk = dispc.feat->calc_core_clk(pclk, in_width, in_height, + out_width, out_height, mem_to_mem); + return 0; +} + +#define DIV_FRAC(dividend, divisor) \ + ((dividend) * 100 / (divisor) - ((dividend) / (divisor) * 100)) + +static int dispc_ovl_calc_scaling(unsigned long pclk, unsigned long lclk, + enum omap_overlay_caps caps, + const struct omap_video_timings *mgr_timings, + u16 width, u16 height, u16 out_width, u16 out_height, + enum omap_color_mode color_mode, bool *five_taps, + int *x_predecim, int *y_predecim, u16 pos_x, + enum omap_dss_rotation_type rotation_type, bool mem_to_mem) +{ + const int maxdownscale = dss_feat_get_param_max(FEAT_PARAM_DOWNSCALE); + const int max_decim_limit = 16; + unsigned long core_clk = 0; + int decim_x, decim_y, ret; + + if (width == out_width && height == out_height) + return 0; + + if (!mem_to_mem && (pclk == 0 || mgr_timings->pixelclock == 0)) { + DSSERR("cannot calculate scaling settings: pclk is zero\n"); + return -EINVAL; + } + + if ((caps & OMAP_DSS_OVL_CAP_SCALE) == 0) + return -EINVAL; + + if (mem_to_mem) { + *x_predecim = *y_predecim = 1; + } else { + *x_predecim = max_decim_limit; + *y_predecim = (rotation_type == OMAP_DSS_ROT_TILER && + dss_has_feature(FEAT_BURST_2D)) ? + 2 : max_decim_limit; + } + + if (color_mode == OMAP_DSS_COLOR_CLUT1 || + color_mode == OMAP_DSS_COLOR_CLUT2 || + color_mode == OMAP_DSS_COLOR_CLUT4 || + color_mode == OMAP_DSS_COLOR_CLUT8) { + *x_predecim = 1; + *y_predecim = 1; + *five_taps = false; + return 0; + } + + decim_x = DIV_ROUND_UP(DIV_ROUND_UP(width, out_width), maxdownscale); + decim_y = DIV_ROUND_UP(DIV_ROUND_UP(height, out_height), maxdownscale); + + if (decim_x > *x_predecim || out_width > width * 8) + return -EINVAL; + + if (decim_y > *y_predecim || out_height > height * 8) + return -EINVAL; + + ret = dispc.feat->calc_scaling(pclk, lclk, mgr_timings, width, height, + out_width, out_height, color_mode, five_taps, + x_predecim, y_predecim, &decim_x, &decim_y, pos_x, &core_clk, + mem_to_mem); + if (ret) + return ret; + + DSSDBG("%dx%d -> %dx%d (%d.%02d x %d.%02d), decim %dx%d %dx%d (%d.%02d x %d.%02d), taps %d, req clk %lu, cur clk %lu\n", + width, height, + out_width, out_height, + out_width / width, DIV_FRAC(out_width, width), + out_height / height, DIV_FRAC(out_height, height), + + decim_x, decim_y, + width / decim_x, height / decim_y, + out_width / (width / decim_x), DIV_FRAC(out_width, width / decim_x), + out_height / (height / decim_y), DIV_FRAC(out_height, height / decim_y), + + *five_taps ? 5 : 3, + core_clk, dispc_core_clk_rate()); + + if (!core_clk || core_clk > dispc_core_clk_rate()) { + DSSERR("failed to set up scaling, " + "required core clk rate = %lu Hz, " + "current core clk rate = %lu Hz\n", + core_clk, dispc_core_clk_rate()); + return -EINVAL; + } + + *x_predecim = decim_x; + *y_predecim = decim_y; + return 0; +} + +int dispc_ovl_check(enum omap_plane plane, enum omap_channel channel, + const struct omap_overlay_info *oi, + const struct omap_video_timings *timings, + int *x_predecim, int *y_predecim) +{ + enum omap_overlay_caps caps = dss_feat_get_overlay_caps(plane); + bool five_taps = true; + bool fieldmode = false; + u16 in_height = oi->height; + u16 in_width = oi->width; + bool ilace = timings->interlace; + u16 out_width, out_height; + int pos_x = oi->pos_x; + unsigned long pclk = dispc_mgr_pclk_rate(channel); + unsigned long lclk = dispc_mgr_lclk_rate(channel); + + out_width = oi->out_width == 0 ? oi->width : oi->out_width; + out_height = oi->out_height == 0 ? oi->height : oi->out_height; + + if (ilace && oi->height == out_height) + fieldmode = true; + + if (ilace) { + if (fieldmode) + in_height /= 2; + out_height /= 2; + + DSSDBG("adjusting for ilace: height %d, out_height %d\n", + in_height, out_height); + } + + if (!dss_feat_color_mode_supported(plane, oi->color_mode)) + return -EINVAL; + + return dispc_ovl_calc_scaling(pclk, lclk, caps, timings, in_width, + in_height, out_width, out_height, oi->color_mode, + &five_taps, x_predecim, y_predecim, pos_x, + oi->rotation_type, false); +} +EXPORT_SYMBOL(dispc_ovl_check); + +static int dispc_ovl_setup_common(enum omap_plane plane, + enum omap_overlay_caps caps, u32 paddr, u32 p_uv_addr, + u16 screen_width, int pos_x, int pos_y, u16 width, u16 height, + u16 out_width, u16 out_height, enum omap_color_mode color_mode, + u8 rotation, bool mirror, u8 zorder, u8 pre_mult_alpha, + u8 global_alpha, enum omap_dss_rotation_type rotation_type, + bool replication, const struct omap_video_timings *mgr_timings, + bool mem_to_mem) +{ + bool five_taps = true; + bool fieldmode = false; + int r, cconv = 0; + unsigned offset0, offset1; + s32 row_inc; + s32 pix_inc; + u16 frame_width, frame_height; + unsigned int field_offset = 0; + u16 in_height = height; + u16 in_width = width; + int x_predecim = 1, y_predecim = 1; + bool ilace = mgr_timings->interlace; + unsigned long pclk = dispc_plane_pclk_rate(plane); + unsigned long lclk = dispc_plane_lclk_rate(plane); + + if (paddr == 0 && rotation_type != OMAP_DSS_ROT_TILER) + return -EINVAL; + + switch (color_mode) { + case OMAP_DSS_COLOR_YUV2: + case OMAP_DSS_COLOR_UYVY: + case OMAP_DSS_COLOR_NV12: + if (in_width & 1) { + DSSERR("input width %d is not even for YUV format\n", + in_width); + return -EINVAL; + } + break; + + default: + break; + } + + out_width = out_width == 0 ? width : out_width; + out_height = out_height == 0 ? height : out_height; + + if (ilace && height == out_height) + fieldmode = true; + + if (ilace) { + if (fieldmode) + in_height /= 2; + pos_y /= 2; + out_height /= 2; + + DSSDBG("adjusting for ilace: height %d, pos_y %d, " + "out_height %d\n", in_height, pos_y, + out_height); + } + + if (!dss_feat_color_mode_supported(plane, color_mode)) + return -EINVAL; + + r = dispc_ovl_calc_scaling(pclk, lclk, caps, mgr_timings, in_width, + in_height, out_width, out_height, color_mode, + &five_taps, &x_predecim, &y_predecim, pos_x, + rotation_type, mem_to_mem); + if (r) + return r; + + in_width = in_width / x_predecim; + in_height = in_height / y_predecim; + + if (x_predecim > 1 || y_predecim > 1) + DSSDBG("predecimation %d x %x, new input size %d x %d\n", + x_predecim, y_predecim, in_width, in_height); + + switch (color_mode) { + case OMAP_DSS_COLOR_YUV2: + case OMAP_DSS_COLOR_UYVY: + case OMAP_DSS_COLOR_NV12: + if (in_width & 1) { + DSSDBG("predecimated input width is not even for YUV format\n"); + DSSDBG("adjusting input width %d -> %d\n", + in_width, in_width & ~1); + + in_width &= ~1; + } + break; + + default: + break; + } + + if (color_mode == OMAP_DSS_COLOR_YUV2 || + color_mode == OMAP_DSS_COLOR_UYVY || + color_mode == OMAP_DSS_COLOR_NV12) + cconv = 1; + + if (ilace && !fieldmode) { + /* + * when downscaling the bottom field may have to start several + * source lines below the top field. Unfortunately ACCUI + * registers will only hold the fractional part of the offset + * so the integer part must be added to the base address of the + * bottom field. + */ + if (!in_height || in_height == out_height) + field_offset = 0; + else + field_offset = in_height / out_height / 2; + } + + /* Fields are independent but interleaved in memory. */ + if (fieldmode) + field_offset = 1; + + offset0 = 0; + offset1 = 0; + row_inc = 0; + pix_inc = 0; + + if (plane == OMAP_DSS_WB) { + frame_width = out_width; + frame_height = out_height; + } else { + frame_width = in_width; + frame_height = height; + } + + if (rotation_type == OMAP_DSS_ROT_TILER) + calc_tiler_rotation_offset(screen_width, frame_width, + color_mode, fieldmode, field_offset, + &offset0, &offset1, &row_inc, &pix_inc, + x_predecim, y_predecim); + else if (rotation_type == OMAP_DSS_ROT_DMA) + calc_dma_rotation_offset(rotation, mirror, screen_width, + frame_width, frame_height, + color_mode, fieldmode, field_offset, + &offset0, &offset1, &row_inc, &pix_inc, + x_predecim, y_predecim); + else + calc_vrfb_rotation_offset(rotation, mirror, + screen_width, frame_width, frame_height, + color_mode, fieldmode, field_offset, + &offset0, &offset1, &row_inc, &pix_inc, + x_predecim, y_predecim); + + DSSDBG("offset0 %u, offset1 %u, row_inc %d, pix_inc %d\n", + offset0, offset1, row_inc, pix_inc); + + dispc_ovl_set_color_mode(plane, color_mode); + + dispc_ovl_configure_burst_type(plane, rotation_type); + + dispc_ovl_set_ba0(plane, paddr + offset0); + dispc_ovl_set_ba1(plane, paddr + offset1); + + if (OMAP_DSS_COLOR_NV12 == color_mode) { + dispc_ovl_set_ba0_uv(plane, p_uv_addr + offset0); + dispc_ovl_set_ba1_uv(plane, p_uv_addr + offset1); + } + + if (dispc.feat->last_pixel_inc_missing) + row_inc += pix_inc - 1; + + dispc_ovl_set_row_inc(plane, row_inc); + dispc_ovl_set_pix_inc(plane, pix_inc); + + DSSDBG("%d,%d %dx%d -> %dx%d\n", pos_x, pos_y, in_width, + in_height, out_width, out_height); + + dispc_ovl_set_pos(plane, caps, pos_x, pos_y); + + dispc_ovl_set_input_size(plane, in_width, in_height); + + if (caps & OMAP_DSS_OVL_CAP_SCALE) { + dispc_ovl_set_scaling(plane, in_width, in_height, out_width, + out_height, ilace, five_taps, fieldmode, + color_mode, rotation); + dispc_ovl_set_output_size(plane, out_width, out_height); + dispc_ovl_set_vid_color_conv(plane, cconv); + } + + dispc_ovl_set_rotation_attrs(plane, rotation, rotation_type, mirror, + color_mode); + + dispc_ovl_set_zorder(plane, caps, zorder); + dispc_ovl_set_pre_mult_alpha(plane, caps, pre_mult_alpha); + dispc_ovl_setup_global_alpha(plane, caps, global_alpha); + + dispc_ovl_enable_replication(plane, caps, replication); + + return 0; +} + +int dispc_ovl_setup(enum omap_plane plane, const struct omap_overlay_info *oi, + bool replication, const struct omap_video_timings *mgr_timings, + bool mem_to_mem) +{ + int r; + enum omap_overlay_caps caps = dss_feat_get_overlay_caps(plane); + enum omap_channel channel; + + channel = dispc_ovl_get_channel_out(plane); + + DSSDBG("dispc_ovl_setup %d, pa %pad, pa_uv %pad, sw %d, %d,%d, %dx%d ->" + " %dx%d, cmode %x, rot %d, mir %d, chan %d repl %d\n", + plane, &oi->paddr, &oi->p_uv_addr, oi->screen_width, oi->pos_x, + oi->pos_y, oi->width, oi->height, oi->out_width, oi->out_height, + oi->color_mode, oi->rotation, oi->mirror, channel, replication); + + r = dispc_ovl_setup_common(plane, caps, oi->paddr, oi->p_uv_addr, + oi->screen_width, oi->pos_x, oi->pos_y, oi->width, oi->height, + oi->out_width, oi->out_height, oi->color_mode, oi->rotation, + oi->mirror, oi->zorder, oi->pre_mult_alpha, oi->global_alpha, + oi->rotation_type, replication, mgr_timings, mem_to_mem); + + return r; +} +EXPORT_SYMBOL(dispc_ovl_setup); + +int dispc_ovl_enable(enum omap_plane plane, bool enable) +{ + DSSDBG("dispc_enable_plane %d, %d\n", plane, enable); + + REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), enable ? 1 : 0, 0, 0); + + return 0; +} +EXPORT_SYMBOL(dispc_ovl_enable); + +bool dispc_ovl_enabled(enum omap_plane plane) +{ + return REG_GET(DISPC_OVL_ATTRIBUTES(plane), 0, 0); +} +EXPORT_SYMBOL(dispc_ovl_enabled); + +void dispc_mgr_enable(enum omap_channel channel, bool enable) +{ + mgr_fld_write(channel, DISPC_MGR_FLD_ENABLE, enable); + /* flush posted write */ + mgr_fld_read(channel, DISPC_MGR_FLD_ENABLE); +} +EXPORT_SYMBOL(dispc_mgr_enable); + +bool dispc_mgr_is_enabled(enum omap_channel channel) +{ + return !!mgr_fld_read(channel, DISPC_MGR_FLD_ENABLE); +} +EXPORT_SYMBOL(dispc_mgr_is_enabled); + +static void dispc_lcd_enable_signal_polarity(bool act_high) +{ + if (!dss_has_feature(FEAT_LCDENABLEPOL)) + return; + + REG_FLD_MOD(DISPC_CONTROL, act_high ? 1 : 0, 29, 29); +} + +void dispc_lcd_enable_signal(bool enable) +{ + if (!dss_has_feature(FEAT_LCDENABLESIGNAL)) + return; + + REG_FLD_MOD(DISPC_CONTROL, enable ? 1 : 0, 28, 28); +} + +void dispc_pck_free_enable(bool enable) +{ + if (!dss_has_feature(FEAT_PCKFREEENABLE)) + return; + + REG_FLD_MOD(DISPC_CONTROL, enable ? 1 : 0, 27, 27); +} + +static void dispc_mgr_enable_fifohandcheck(enum omap_channel channel, bool enable) +{ + mgr_fld_write(channel, DISPC_MGR_FLD_FIFOHANDCHECK, enable); +} + + +static void dispc_mgr_set_lcd_type_tft(enum omap_channel channel) +{ + mgr_fld_write(channel, DISPC_MGR_FLD_STNTFT, 1); +} + +static void dispc_set_loadmode(enum omap_dss_load_mode mode) +{ + REG_FLD_MOD(DISPC_CONFIG, mode, 2, 1); +} + + +static void dispc_mgr_set_default_color(enum omap_channel channel, u32 color) +{ + dispc_write_reg(DISPC_DEFAULT_COLOR(channel), color); +} + +static void dispc_mgr_set_trans_key(enum omap_channel ch, + enum omap_dss_trans_key_type type, + u32 trans_key) +{ + mgr_fld_write(ch, DISPC_MGR_FLD_TCKSELECTION, type); + + dispc_write_reg(DISPC_TRANS_COLOR(ch), trans_key); +} + +static void dispc_mgr_enable_trans_key(enum omap_channel ch, bool enable) +{ + mgr_fld_write(ch, DISPC_MGR_FLD_TCKENABLE, enable); +} + +static void dispc_mgr_enable_alpha_fixed_zorder(enum omap_channel ch, + bool enable) +{ + if (!dss_has_feature(FEAT_ALPHA_FIXED_ZORDER)) + return; + + if (ch == OMAP_DSS_CHANNEL_LCD) + REG_FLD_MOD(DISPC_CONFIG, enable, 18, 18); + else if (ch == OMAP_DSS_CHANNEL_DIGIT) + REG_FLD_MOD(DISPC_CONFIG, enable, 19, 19); +} + +void dispc_mgr_setup(enum omap_channel channel, + const struct omap_overlay_manager_info *info) +{ + dispc_mgr_set_default_color(channel, info->default_color); + dispc_mgr_set_trans_key(channel, info->trans_key_type, info->trans_key); + dispc_mgr_enable_trans_key(channel, info->trans_enabled); + dispc_mgr_enable_alpha_fixed_zorder(channel, + info->partial_alpha_enabled); + if (dss_has_feature(FEAT_CPR)) { + dispc_mgr_enable_cpr(channel, info->cpr_enable); + dispc_mgr_set_cpr_coef(channel, &info->cpr_coefs); + } +} +EXPORT_SYMBOL(dispc_mgr_setup); + +static void dispc_mgr_set_tft_data_lines(enum omap_channel channel, u8 data_lines) +{ + int code; + + switch (data_lines) { + case 12: + code = 0; + break; + case 16: + code = 1; + break; + case 18: + code = 2; + break; + case 24: + code = 3; + break; + default: + BUG(); + return; + } + + mgr_fld_write(channel, DISPC_MGR_FLD_TFTDATALINES, code); +} + +static void dispc_mgr_set_io_pad_mode(enum dss_io_pad_mode mode) +{ + u32 l; + int gpout0, gpout1; + + switch (mode) { + case DSS_IO_PAD_MODE_RESET: + gpout0 = 0; + gpout1 = 0; + break; + case DSS_IO_PAD_MODE_RFBI: + gpout0 = 1; + gpout1 = 0; + break; + case DSS_IO_PAD_MODE_BYPASS: + gpout0 = 1; + gpout1 = 1; + break; + default: + BUG(); + return; + } + + l = dispc_read_reg(DISPC_CONTROL); + l = FLD_MOD(l, gpout0, 15, 15); + l = FLD_MOD(l, gpout1, 16, 16); + dispc_write_reg(DISPC_CONTROL, l); +} + +static void dispc_mgr_enable_stallmode(enum omap_channel channel, bool enable) +{ + mgr_fld_write(channel, DISPC_MGR_FLD_STALLMODE, enable); +} + +void dispc_mgr_set_lcd_config(enum omap_channel channel, + const struct dss_lcd_mgr_config *config) +{ + dispc_mgr_set_io_pad_mode(config->io_pad_mode); + + dispc_mgr_enable_stallmode(channel, config->stallmode); + dispc_mgr_enable_fifohandcheck(channel, config->fifohandcheck); + + dispc_mgr_set_clock_div(channel, &config->clock_info); + + dispc_mgr_set_tft_data_lines(channel, config->video_port_width); + + dispc_lcd_enable_signal_polarity(config->lcden_sig_polarity); + + dispc_mgr_set_lcd_type_tft(channel); +} +EXPORT_SYMBOL(dispc_mgr_set_lcd_config); + +static bool _dispc_mgr_size_ok(u16 width, u16 height) +{ + return width <= dispc.feat->mgr_width_max && + height <= dispc.feat->mgr_height_max; +} + +static bool _dispc_lcd_timings_ok(int hsw, int hfp, int hbp, + int vsw, int vfp, int vbp) +{ + if (hsw < 1 || hsw > dispc.feat->sw_max || + hfp < 1 || hfp > dispc.feat->hp_max || + hbp < 1 || hbp > dispc.feat->hp_max || + vsw < 1 || vsw > dispc.feat->sw_max || + vfp < 0 || vfp > dispc.feat->vp_max || + vbp < 0 || vbp > dispc.feat->vp_max) + return false; + return true; +} + +static bool _dispc_mgr_pclk_ok(enum omap_channel channel, + unsigned long pclk) +{ + if (dss_mgr_is_lcd(channel)) + return pclk <= dispc.feat->max_lcd_pclk; + else + return pclk <= dispc.feat->max_tv_pclk; +} + +bool dispc_mgr_timings_ok(enum omap_channel channel, + const struct omap_video_timings *timings) +{ + if (!_dispc_mgr_size_ok(timings->x_res, timings->y_res)) + return false; + + if (!_dispc_mgr_pclk_ok(channel, timings->pixelclock)) + return false; + + if (dss_mgr_is_lcd(channel)) { + /* TODO: OMAP4+ supports interlace for LCD outputs */ + if (timings->interlace) + return false; + + if (!_dispc_lcd_timings_ok(timings->hsw, timings->hfp, + timings->hbp, timings->vsw, timings->vfp, + timings->vbp)) + return false; + } + + return true; +} + +static void _dispc_mgr_set_lcd_timings(enum omap_channel channel, int hsw, + int hfp, int hbp, int vsw, int vfp, int vbp, + enum omap_dss_signal_level vsync_level, + enum omap_dss_signal_level hsync_level, + enum omap_dss_signal_edge data_pclk_edge, + enum omap_dss_signal_level de_level, + enum omap_dss_signal_edge sync_pclk_edge) + +{ + u32 timing_h, timing_v, l; + bool onoff, rf, ipc, vs, hs, de; + + timing_h = FLD_VAL(hsw-1, dispc.feat->sw_start, 0) | + FLD_VAL(hfp-1, dispc.feat->fp_start, 8) | + FLD_VAL(hbp-1, dispc.feat->bp_start, 20); + timing_v = FLD_VAL(vsw-1, dispc.feat->sw_start, 0) | + FLD_VAL(vfp, dispc.feat->fp_start, 8) | + FLD_VAL(vbp, dispc.feat->bp_start, 20); + + dispc_write_reg(DISPC_TIMING_H(channel), timing_h); + dispc_write_reg(DISPC_TIMING_V(channel), timing_v); + + switch (vsync_level) { + case OMAPDSS_SIG_ACTIVE_LOW: + vs = true; + break; + case OMAPDSS_SIG_ACTIVE_HIGH: + vs = false; + break; + default: + BUG(); + } + + switch (hsync_level) { + case OMAPDSS_SIG_ACTIVE_LOW: + hs = true; + break; + case OMAPDSS_SIG_ACTIVE_HIGH: + hs = false; + break; + default: + BUG(); + } + + switch (de_level) { + case OMAPDSS_SIG_ACTIVE_LOW: + de = true; + break; + case OMAPDSS_SIG_ACTIVE_HIGH: + de = false; + break; + default: + BUG(); + } + + switch (data_pclk_edge) { + case OMAPDSS_DRIVE_SIG_RISING_EDGE: + ipc = false; + break; + case OMAPDSS_DRIVE_SIG_FALLING_EDGE: + ipc = true; + break; + default: + BUG(); + } + + /* always use the 'rf' setting */ + onoff = true; + + switch (sync_pclk_edge) { + case OMAPDSS_DRIVE_SIG_FALLING_EDGE: + rf = false; + break; + case OMAPDSS_DRIVE_SIG_RISING_EDGE: + rf = true; + break; + default: + BUG(); + } + + l = FLD_VAL(onoff, 17, 17) | + FLD_VAL(rf, 16, 16) | + FLD_VAL(de, 15, 15) | + FLD_VAL(ipc, 14, 14) | + FLD_VAL(hs, 13, 13) | + FLD_VAL(vs, 12, 12); + + /* always set ALIGN bit when available */ + if (dispc.feat->supports_sync_align) + l |= (1 << 18); + + dispc_write_reg(DISPC_POL_FREQ(channel), l); + + if (dispc.syscon_pol) { + const int shifts[] = { + [OMAP_DSS_CHANNEL_LCD] = 0, + [OMAP_DSS_CHANNEL_LCD2] = 1, + [OMAP_DSS_CHANNEL_LCD3] = 2, + }; + + u32 mask, val; + + mask = (1 << 0) | (1 << 3) | (1 << 6); + val = (rf << 0) | (ipc << 3) | (onoff << 6); + + mask <<= 16 + shifts[channel]; + val <<= 16 + shifts[channel]; + + regmap_update_bits(dispc.syscon_pol, dispc.syscon_pol_offset, + mask, val); + } +} + +/* change name to mode? */ +void dispc_mgr_set_timings(enum omap_channel channel, + const struct omap_video_timings *timings) +{ + unsigned xtot, ytot; + unsigned long ht, vt; + struct omap_video_timings t = *timings; + + DSSDBG("channel %d xres %u yres %u\n", channel, t.x_res, t.y_res); + + if (!dispc_mgr_timings_ok(channel, &t)) { + BUG(); + return; + } + + if (dss_mgr_is_lcd(channel)) { + _dispc_mgr_set_lcd_timings(channel, t.hsw, t.hfp, t.hbp, t.vsw, + t.vfp, t.vbp, t.vsync_level, t.hsync_level, + t.data_pclk_edge, t.de_level, t.sync_pclk_edge); + + xtot = t.x_res + t.hfp + t.hsw + t.hbp; + ytot = t.y_res + t.vfp + t.vsw + t.vbp; + + ht = timings->pixelclock / xtot; + vt = timings->pixelclock / xtot / ytot; + + DSSDBG("pck %u\n", timings->pixelclock); + DSSDBG("hsw %d hfp %d hbp %d vsw %d vfp %d vbp %d\n", + t.hsw, t.hfp, t.hbp, t.vsw, t.vfp, t.vbp); + DSSDBG("vsync_level %d hsync_level %d data_pclk_edge %d de_level %d sync_pclk_edge %d\n", + t.vsync_level, t.hsync_level, t.data_pclk_edge, + t.de_level, t.sync_pclk_edge); + + DSSDBG("hsync %luHz, vsync %luHz\n", ht, vt); + } else { + if (t.interlace) + t.y_res /= 2; + } + + dispc_mgr_set_size(channel, t.x_res, t.y_res); +} +EXPORT_SYMBOL(dispc_mgr_set_timings); + +static void dispc_mgr_set_lcd_divisor(enum omap_channel channel, u16 lck_div, + u16 pck_div) +{ + BUG_ON(lck_div < 1); + BUG_ON(pck_div < 1); + + dispc_write_reg(DISPC_DIVISORo(channel), + FLD_VAL(lck_div, 23, 16) | FLD_VAL(pck_div, 7, 0)); + + if (!dss_has_feature(FEAT_CORE_CLK_DIV) && + channel == OMAP_DSS_CHANNEL_LCD) + dispc.core_clk_rate = dispc_fclk_rate() / lck_div; +} + +static void dispc_mgr_get_lcd_divisor(enum omap_channel channel, int *lck_div, + int *pck_div) +{ + u32 l; + l = dispc_read_reg(DISPC_DIVISORo(channel)); + *lck_div = FLD_GET(l, 23, 16); + *pck_div = FLD_GET(l, 7, 0); +} + +static unsigned long dispc_fclk_rate(void) +{ + struct dss_pll *pll; + unsigned long r = 0; + + switch (dss_get_dispc_clk_source()) { + case OMAP_DSS_CLK_SRC_FCK: + r = dss_get_dispc_clk_rate(); + break; + case OMAP_DSS_CLK_SRC_DSI_PLL_HSDIV_DISPC: + pll = dss_pll_find("dsi0"); + if (!pll) + pll = dss_pll_find("video0"); + + r = pll->cinfo.clkout[0]; + break; + case OMAP_DSS_CLK_SRC_DSI2_PLL_HSDIV_DISPC: + pll = dss_pll_find("dsi1"); + if (!pll) + pll = dss_pll_find("video1"); + + r = pll->cinfo.clkout[0]; + break; + default: + BUG(); + return 0; + } + + return r; +} + +static unsigned long dispc_mgr_lclk_rate(enum omap_channel channel) +{ + struct dss_pll *pll; + int lcd; + unsigned long r; + u32 l; + + if (dss_mgr_is_lcd(channel)) { + l = dispc_read_reg(DISPC_DIVISORo(channel)); + + lcd = FLD_GET(l, 23, 16); + + switch (dss_get_lcd_clk_source(channel)) { + case OMAP_DSS_CLK_SRC_FCK: + r = dss_get_dispc_clk_rate(); + break; + case OMAP_DSS_CLK_SRC_DSI_PLL_HSDIV_DISPC: + pll = dss_pll_find("dsi0"); + if (!pll) + pll = dss_pll_find("video0"); + + r = pll->cinfo.clkout[0]; + break; + case OMAP_DSS_CLK_SRC_DSI2_PLL_HSDIV_DISPC: + pll = dss_pll_find("dsi1"); + if (!pll) + pll = dss_pll_find("video1"); + + r = pll->cinfo.clkout[0]; + break; + default: + BUG(); + return 0; + } + + return r / lcd; + } else { + return dispc_fclk_rate(); + } +} + +static unsigned long dispc_mgr_pclk_rate(enum omap_channel channel) +{ + unsigned long r; + + if (dss_mgr_is_lcd(channel)) { + int pcd; + u32 l; + + l = dispc_read_reg(DISPC_DIVISORo(channel)); + + pcd = FLD_GET(l, 7, 0); + + r = dispc_mgr_lclk_rate(channel); + + return r / pcd; + } else { + return dispc.tv_pclk_rate; + } +} + +void dispc_set_tv_pclk(unsigned long pclk) +{ + dispc.tv_pclk_rate = pclk; +} + +static unsigned long dispc_core_clk_rate(void) +{ + return dispc.core_clk_rate; +} + +static unsigned long dispc_plane_pclk_rate(enum omap_plane plane) +{ + enum omap_channel channel; + + if (plane == OMAP_DSS_WB) + return 0; + + channel = dispc_ovl_get_channel_out(plane); + + return dispc_mgr_pclk_rate(channel); +} + +static unsigned long dispc_plane_lclk_rate(enum omap_plane plane) +{ + enum omap_channel channel; + + if (plane == OMAP_DSS_WB) + return 0; + + channel = dispc_ovl_get_channel_out(plane); + + return dispc_mgr_lclk_rate(channel); +} + +static void dispc_dump_clocks_channel(struct seq_file *s, enum omap_channel channel) +{ + int lcd, pcd; + enum omap_dss_clk_source lcd_clk_src; + + seq_printf(s, "- %s -\n", mgr_desc[channel].name); + + lcd_clk_src = dss_get_lcd_clk_source(channel); + + seq_printf(s, "%s clk source = %s (%s)\n", mgr_desc[channel].name, + dss_get_generic_clk_source_name(lcd_clk_src), + dss_feat_get_clk_source_name(lcd_clk_src)); + + dispc_mgr_get_lcd_divisor(channel, &lcd, &pcd); + + seq_printf(s, "lck\t\t%-16lulck div\t%u\n", + dispc_mgr_lclk_rate(channel), lcd); + seq_printf(s, "pck\t\t%-16lupck div\t%u\n", + dispc_mgr_pclk_rate(channel), pcd); +} + +void dispc_dump_clocks(struct seq_file *s) +{ + int lcd; + u32 l; + enum omap_dss_clk_source dispc_clk_src = dss_get_dispc_clk_source(); + + if (dispc_runtime_get()) + return; + + seq_printf(s, "- DISPC -\n"); + + seq_printf(s, "dispc fclk source = %s (%s)\n", + dss_get_generic_clk_source_name(dispc_clk_src), + dss_feat_get_clk_source_name(dispc_clk_src)); + + seq_printf(s, "fck\t\t%-16lu\n", dispc_fclk_rate()); + + if (dss_has_feature(FEAT_CORE_CLK_DIV)) { + seq_printf(s, "- DISPC-CORE-CLK -\n"); + l = dispc_read_reg(DISPC_DIVISOR); + lcd = FLD_GET(l, 23, 16); + + seq_printf(s, "lck\t\t%-16lulck div\t%u\n", + (dispc_fclk_rate()/lcd), lcd); + } + + dispc_dump_clocks_channel(s, OMAP_DSS_CHANNEL_LCD); + + if (dss_has_feature(FEAT_MGR_LCD2)) + dispc_dump_clocks_channel(s, OMAP_DSS_CHANNEL_LCD2); + if (dss_has_feature(FEAT_MGR_LCD3)) + dispc_dump_clocks_channel(s, OMAP_DSS_CHANNEL_LCD3); + + dispc_runtime_put(); +} + +static void dispc_dump_regs(struct seq_file *s) +{ + int i, j; + const char *mgr_names[] = { + [OMAP_DSS_CHANNEL_LCD] = "LCD", + [OMAP_DSS_CHANNEL_DIGIT] = "TV", + [OMAP_DSS_CHANNEL_LCD2] = "LCD2", + [OMAP_DSS_CHANNEL_LCD3] = "LCD3", + }; + const char *ovl_names[] = { + [OMAP_DSS_GFX] = "GFX", + [OMAP_DSS_VIDEO1] = "VID1", + [OMAP_DSS_VIDEO2] = "VID2", + [OMAP_DSS_VIDEO3] = "VID3", + [OMAP_DSS_WB] = "WB", + }; + const char **p_names; + +#define DUMPREG(r) seq_printf(s, "%-50s %08x\n", #r, dispc_read_reg(r)) + + if (dispc_runtime_get()) + return; + + /* DISPC common registers */ + DUMPREG(DISPC_REVISION); + DUMPREG(DISPC_SYSCONFIG); + DUMPREG(DISPC_SYSSTATUS); + DUMPREG(DISPC_IRQSTATUS); + DUMPREG(DISPC_IRQENABLE); + DUMPREG(DISPC_CONTROL); + DUMPREG(DISPC_CONFIG); + DUMPREG(DISPC_CAPABLE); + DUMPREG(DISPC_LINE_STATUS); + DUMPREG(DISPC_LINE_NUMBER); + if (dss_has_feature(FEAT_ALPHA_FIXED_ZORDER) || + dss_has_feature(FEAT_ALPHA_FREE_ZORDER)) + DUMPREG(DISPC_GLOBAL_ALPHA); + if (dss_has_feature(FEAT_MGR_LCD2)) { + DUMPREG(DISPC_CONTROL2); + DUMPREG(DISPC_CONFIG2); + } + if (dss_has_feature(FEAT_MGR_LCD3)) { + DUMPREG(DISPC_CONTROL3); + DUMPREG(DISPC_CONFIG3); + } + if (dss_has_feature(FEAT_MFLAG)) + DUMPREG(DISPC_GLOBAL_MFLAG_ATTRIBUTE); + +#undef DUMPREG + +#define DISPC_REG(i, name) name(i) +#define DUMPREG(i, r) seq_printf(s, "%s(%s)%*s %08x\n", #r, p_names[i], \ + (int)(48 - strlen(#r) - strlen(p_names[i])), " ", \ + dispc_read_reg(DISPC_REG(i, r))) + + p_names = mgr_names; + + /* DISPC channel specific registers */ + for (i = 0; i < dss_feat_get_num_mgrs(); i++) { + DUMPREG(i, DISPC_DEFAULT_COLOR); + DUMPREG(i, DISPC_TRANS_COLOR); + DUMPREG(i, DISPC_SIZE_MGR); + + if (i == OMAP_DSS_CHANNEL_DIGIT) + continue; + + DUMPREG(i, DISPC_TIMING_H); + DUMPREG(i, DISPC_TIMING_V); + DUMPREG(i, DISPC_POL_FREQ); + DUMPREG(i, DISPC_DIVISORo); + + DUMPREG(i, DISPC_DATA_CYCLE1); + DUMPREG(i, DISPC_DATA_CYCLE2); + DUMPREG(i, DISPC_DATA_CYCLE3); + + if (dss_has_feature(FEAT_CPR)) { + DUMPREG(i, DISPC_CPR_COEF_R); + DUMPREG(i, DISPC_CPR_COEF_G); + DUMPREG(i, DISPC_CPR_COEF_B); + } + } + + p_names = ovl_names; + + for (i = 0; i < dss_feat_get_num_ovls(); i++) { + DUMPREG(i, DISPC_OVL_BA0); + DUMPREG(i, DISPC_OVL_BA1); + DUMPREG(i, DISPC_OVL_POSITION); + DUMPREG(i, DISPC_OVL_SIZE); + DUMPREG(i, DISPC_OVL_ATTRIBUTES); + DUMPREG(i, DISPC_OVL_FIFO_THRESHOLD); + DUMPREG(i, DISPC_OVL_FIFO_SIZE_STATUS); + DUMPREG(i, DISPC_OVL_ROW_INC); + DUMPREG(i, DISPC_OVL_PIXEL_INC); + + if (dss_has_feature(FEAT_PRELOAD)) + DUMPREG(i, DISPC_OVL_PRELOAD); + if (dss_has_feature(FEAT_MFLAG)) + DUMPREG(i, DISPC_OVL_MFLAG_THRESHOLD); + + if (i == OMAP_DSS_GFX) { + DUMPREG(i, DISPC_OVL_WINDOW_SKIP); + DUMPREG(i, DISPC_OVL_TABLE_BA); + continue; + } + + DUMPREG(i, DISPC_OVL_FIR); + DUMPREG(i, DISPC_OVL_PICTURE_SIZE); + DUMPREG(i, DISPC_OVL_ACCU0); + DUMPREG(i, DISPC_OVL_ACCU1); + if (dss_has_feature(FEAT_HANDLE_UV_SEPARATE)) { + DUMPREG(i, DISPC_OVL_BA0_UV); + DUMPREG(i, DISPC_OVL_BA1_UV); + DUMPREG(i, DISPC_OVL_FIR2); + DUMPREG(i, DISPC_OVL_ACCU2_0); + DUMPREG(i, DISPC_OVL_ACCU2_1); + } + if (dss_has_feature(FEAT_ATTR2)) + DUMPREG(i, DISPC_OVL_ATTRIBUTES2); + } + + if (dispc.feat->has_writeback) { + i = OMAP_DSS_WB; + DUMPREG(i, DISPC_OVL_BA0); + DUMPREG(i, DISPC_OVL_BA1); + DUMPREG(i, DISPC_OVL_SIZE); + DUMPREG(i, DISPC_OVL_ATTRIBUTES); + DUMPREG(i, DISPC_OVL_FIFO_THRESHOLD); + DUMPREG(i, DISPC_OVL_FIFO_SIZE_STATUS); + DUMPREG(i, DISPC_OVL_ROW_INC); + DUMPREG(i, DISPC_OVL_PIXEL_INC); + + if (dss_has_feature(FEAT_MFLAG)) + DUMPREG(i, DISPC_OVL_MFLAG_THRESHOLD); + + DUMPREG(i, DISPC_OVL_FIR); + DUMPREG(i, DISPC_OVL_PICTURE_SIZE); + DUMPREG(i, DISPC_OVL_ACCU0); + DUMPREG(i, DISPC_OVL_ACCU1); + if (dss_has_feature(FEAT_HANDLE_UV_SEPARATE)) { + DUMPREG(i, DISPC_OVL_BA0_UV); + DUMPREG(i, DISPC_OVL_BA1_UV); + DUMPREG(i, DISPC_OVL_FIR2); + DUMPREG(i, DISPC_OVL_ACCU2_0); + DUMPREG(i, DISPC_OVL_ACCU2_1); + } + if (dss_has_feature(FEAT_ATTR2)) + DUMPREG(i, DISPC_OVL_ATTRIBUTES2); + } + +#undef DISPC_REG +#undef DUMPREG + +#define DISPC_REG(plane, name, i) name(plane, i) +#define DUMPREG(plane, name, i) \ + seq_printf(s, "%s_%d(%s)%*s %08x\n", #name, i, p_names[plane], \ + (int)(46 - strlen(#name) - strlen(p_names[plane])), " ", \ + dispc_read_reg(DISPC_REG(plane, name, i))) + + /* Video pipeline coefficient registers */ + + /* start from OMAP_DSS_VIDEO1 */ + for (i = 1; i < dss_feat_get_num_ovls(); i++) { + for (j = 0; j < 8; j++) + DUMPREG(i, DISPC_OVL_FIR_COEF_H, j); + + for (j = 0; j < 8; j++) + DUMPREG(i, DISPC_OVL_FIR_COEF_HV, j); + + for (j = 0; j < 5; j++) + DUMPREG(i, DISPC_OVL_CONV_COEF, j); + + if (dss_has_feature(FEAT_FIR_COEF_V)) { + for (j = 0; j < 8; j++) + DUMPREG(i, DISPC_OVL_FIR_COEF_V, j); + } + + if (dss_has_feature(FEAT_HANDLE_UV_SEPARATE)) { + for (j = 0; j < 8; j++) + DUMPREG(i, DISPC_OVL_FIR_COEF_H2, j); + + for (j = 0; j < 8; j++) + DUMPREG(i, DISPC_OVL_FIR_COEF_HV2, j); + + for (j = 0; j < 8; j++) + DUMPREG(i, DISPC_OVL_FIR_COEF_V2, j); + } + } + + dispc_runtime_put(); + +#undef DISPC_REG +#undef DUMPREG +} + +/* calculate clock rates using dividers in cinfo */ +int dispc_calc_clock_rates(unsigned long dispc_fclk_rate, + struct dispc_clock_info *cinfo) +{ + if (cinfo->lck_div > 255 || cinfo->lck_div == 0) + return -EINVAL; + if (cinfo->pck_div < 1 || cinfo->pck_div > 255) + return -EINVAL; + + cinfo->lck = dispc_fclk_rate / cinfo->lck_div; + cinfo->pck = cinfo->lck / cinfo->pck_div; + + return 0; +} + +bool dispc_div_calc(unsigned long dispc, + unsigned long pck_min, unsigned long pck_max, + dispc_div_calc_func func, void *data) +{ + int lckd, lckd_start, lckd_stop; + int pckd, pckd_start, pckd_stop; + unsigned long pck, lck; + unsigned long lck_max; + unsigned long pckd_hw_min, pckd_hw_max; + unsigned min_fck_per_pck; + unsigned long fck; + +#ifdef CONFIG_FB_OMAP2_DSS_MIN_FCK_PER_PCK + min_fck_per_pck = CONFIG_FB_OMAP2_DSS_MIN_FCK_PER_PCK; +#else + min_fck_per_pck = 0; +#endif + + pckd_hw_min = dss_feat_get_param_min(FEAT_PARAM_DSS_PCD); + pckd_hw_max = dss_feat_get_param_max(FEAT_PARAM_DSS_PCD); + + lck_max = dss_feat_get_param_max(FEAT_PARAM_DSS_FCK); + + pck_min = pck_min ? pck_min : 1; + pck_max = pck_max ? pck_max : ULONG_MAX; + + lckd_start = max(DIV_ROUND_UP(dispc, lck_max), 1ul); + lckd_stop = min(dispc / pck_min, 255ul); + + for (lckd = lckd_start; lckd <= lckd_stop; ++lckd) { + lck = dispc / lckd; + + pckd_start = max(DIV_ROUND_UP(lck, pck_max), pckd_hw_min); + pckd_stop = min(lck / pck_min, pckd_hw_max); + + for (pckd = pckd_start; pckd <= pckd_stop; ++pckd) { + pck = lck / pckd; + + /* + * For OMAP2/3 the DISPC fclk is the same as LCD's logic + * clock, which means we're configuring DISPC fclk here + * also. Thus we need to use the calculated lck. For + * OMAP4+ the DISPC fclk is a separate clock. + */ + if (dss_has_feature(FEAT_CORE_CLK_DIV)) + fck = dispc_core_clk_rate(); + else + fck = lck; + + if (fck < pck * min_fck_per_pck) + continue; + + if (func(lckd, pckd, lck, pck, data)) + return true; + } + } + + return false; +} + +void dispc_mgr_set_clock_div(enum omap_channel channel, + const struct dispc_clock_info *cinfo) +{ + DSSDBG("lck = %lu (%u)\n", cinfo->lck, cinfo->lck_div); + DSSDBG("pck = %lu (%u)\n", cinfo->pck, cinfo->pck_div); + + dispc_mgr_set_lcd_divisor(channel, cinfo->lck_div, cinfo->pck_div); +} + +int dispc_mgr_get_clock_div(enum omap_channel channel, + struct dispc_clock_info *cinfo) +{ + unsigned long fck; + + fck = dispc_fclk_rate(); + + cinfo->lck_div = REG_GET(DISPC_DIVISORo(channel), 23, 16); + cinfo->pck_div = REG_GET(DISPC_DIVISORo(channel), 7, 0); + + cinfo->lck = fck / cinfo->lck_div; + cinfo->pck = cinfo->lck / cinfo->pck_div; + + return 0; +} + +u32 dispc_read_irqstatus(void) +{ + return dispc_read_reg(DISPC_IRQSTATUS); +} +EXPORT_SYMBOL(dispc_read_irqstatus); + +void dispc_clear_irqstatus(u32 mask) +{ + dispc_write_reg(DISPC_IRQSTATUS, mask); +} +EXPORT_SYMBOL(dispc_clear_irqstatus); + +u32 dispc_read_irqenable(void) +{ + return dispc_read_reg(DISPC_IRQENABLE); +} +EXPORT_SYMBOL(dispc_read_irqenable); + +void dispc_write_irqenable(u32 mask) +{ + u32 old_mask = dispc_read_reg(DISPC_IRQENABLE); + + /* clear the irqstatus for newly enabled irqs */ + dispc_clear_irqstatus((mask ^ old_mask) & mask); + + dispc_write_reg(DISPC_IRQENABLE, mask); +} +EXPORT_SYMBOL(dispc_write_irqenable); + +void dispc_enable_sidle(void) +{ + REG_FLD_MOD(DISPC_SYSCONFIG, 2, 4, 3); /* SIDLEMODE: smart idle */ +} + +void dispc_disable_sidle(void) +{ + REG_FLD_MOD(DISPC_SYSCONFIG, 1, 4, 3); /* SIDLEMODE: no idle */ +} + +static void _omap_dispc_initial_config(void) +{ + u32 l; + + /* Exclusively enable DISPC_CORE_CLK and set divider to 1 */ + if (dss_has_feature(FEAT_CORE_CLK_DIV)) { + l = dispc_read_reg(DISPC_DIVISOR); + /* Use DISPC_DIVISOR.LCD, instead of DISPC_DIVISOR1.LCD */ + l = FLD_MOD(l, 1, 0, 0); + l = FLD_MOD(l, 1, 23, 16); + dispc_write_reg(DISPC_DIVISOR, l); + + dispc.core_clk_rate = dispc_fclk_rate(); + } + + /* FUNCGATED */ + if (dss_has_feature(FEAT_FUNCGATED)) + REG_FLD_MOD(DISPC_CONFIG, 1, 9, 9); + + dispc_setup_color_conv_coef(); + + dispc_set_loadmode(OMAP_DSS_LOAD_FRAME_ONLY); + + dispc_init_fifos(); + + dispc_configure_burst_sizes(); + + dispc_ovl_enable_zorder_planes(); + + if (dispc.feat->mstandby_workaround) + REG_FLD_MOD(DISPC_MSTANDBY_CTRL, 1, 0, 0); + + if (dss_has_feature(FEAT_MFLAG)) + dispc_init_mflag(); +} + +static const struct dispc_features omap24xx_dispc_feats = { + .sw_start = 5, + .fp_start = 15, + .bp_start = 27, + .sw_max = 64, + .vp_max = 255, + .hp_max = 256, + .mgr_width_start = 10, + .mgr_height_start = 26, + .mgr_width_max = 2048, + .mgr_height_max = 2048, + .max_lcd_pclk = 66500000, + .calc_scaling = dispc_ovl_calc_scaling_24xx, + .calc_core_clk = calc_core_clk_24xx, + .num_fifos = 3, + .no_framedone_tv = true, + .set_max_preload = false, + .last_pixel_inc_missing = true, +}; + +static const struct dispc_features omap34xx_rev1_0_dispc_feats = { + .sw_start = 5, + .fp_start = 15, + .bp_start = 27, + .sw_max = 64, + .vp_max = 255, + .hp_max = 256, + .mgr_width_start = 10, + .mgr_height_start = 26, + .mgr_width_max = 2048, + .mgr_height_max = 2048, + .max_lcd_pclk = 173000000, + .max_tv_pclk = 59000000, + .calc_scaling = dispc_ovl_calc_scaling_34xx, + .calc_core_clk = calc_core_clk_34xx, + .num_fifos = 3, + .no_framedone_tv = true, + .set_max_preload = false, + .last_pixel_inc_missing = true, +}; + +static const struct dispc_features omap34xx_rev3_0_dispc_feats = { + .sw_start = 7, + .fp_start = 19, + .bp_start = 31, + .sw_max = 256, + .vp_max = 4095, + .hp_max = 4096, + .mgr_width_start = 10, + .mgr_height_start = 26, + .mgr_width_max = 2048, + .mgr_height_max = 2048, + .max_lcd_pclk = 173000000, + .max_tv_pclk = 59000000, + .calc_scaling = dispc_ovl_calc_scaling_34xx, + .calc_core_clk = calc_core_clk_34xx, + .num_fifos = 3, + .no_framedone_tv = true, + .set_max_preload = false, + .last_pixel_inc_missing = true, +}; + +static const struct dispc_features omap44xx_dispc_feats = { + .sw_start = 7, + .fp_start = 19, + .bp_start = 31, + .sw_max = 256, + .vp_max = 4095, + .hp_max = 4096, + .mgr_width_start = 10, + .mgr_height_start = 26, + .mgr_width_max = 2048, + .mgr_height_max = 2048, + .max_lcd_pclk = 170000000, + .max_tv_pclk = 185625000, + .calc_scaling = dispc_ovl_calc_scaling_44xx, + .calc_core_clk = calc_core_clk_44xx, + .num_fifos = 5, + .gfx_fifo_workaround = true, + .set_max_preload = true, + .supports_sync_align = true, + .has_writeback = true, +}; + +static const struct dispc_features omap54xx_dispc_feats = { + .sw_start = 7, + .fp_start = 19, + .bp_start = 31, + .sw_max = 256, + .vp_max = 4095, + .hp_max = 4096, + .mgr_width_start = 11, + .mgr_height_start = 27, + .mgr_width_max = 4096, + .mgr_height_max = 4096, + .max_lcd_pclk = 170000000, + .max_tv_pclk = 186000000, + .calc_scaling = dispc_ovl_calc_scaling_44xx, + .calc_core_clk = calc_core_clk_44xx, + .num_fifos = 5, + .gfx_fifo_workaround = true, + .mstandby_workaround = true, + .set_max_preload = true, + .supports_sync_align = true, + .has_writeback = true, +}; + +static const struct dispc_features *dispc_get_features(void) +{ + switch (omapdss_get_version()) { + case OMAPDSS_VER_OMAP24xx: + return &omap24xx_dispc_feats; + + case OMAPDSS_VER_OMAP34xx_ES1: + return &omap34xx_rev1_0_dispc_feats; + + case OMAPDSS_VER_OMAP34xx_ES3: + case OMAPDSS_VER_OMAP3630: + case OMAPDSS_VER_AM35xx: + case OMAPDSS_VER_AM43xx: + return &omap34xx_rev3_0_dispc_feats; + + case OMAPDSS_VER_OMAP4430_ES1: + case OMAPDSS_VER_OMAP4430_ES2: + case OMAPDSS_VER_OMAP4: + return &omap44xx_dispc_feats; + + case OMAPDSS_VER_OMAP5: + case OMAPDSS_VER_DRA7xx: + return &omap54xx_dispc_feats; + + default: + return NULL; + } +} + +static irqreturn_t dispc_irq_handler(int irq, void *arg) +{ + if (!dispc.is_enabled) + return IRQ_NONE; + + return dispc.user_handler(irq, dispc.user_data); +} + +int dispc_request_irq(irq_handler_t handler, void *dev_id) +{ + int r; + + if (dispc.user_handler != NULL) + return -EBUSY; + + dispc.user_handler = handler; + dispc.user_data = dev_id; + + /* ensure the dispc_irq_handler sees the values above */ + smp_wmb(); + + r = devm_request_irq(&dispc.pdev->dev, dispc.irq, dispc_irq_handler, + IRQF_SHARED, "OMAP DISPC", &dispc); + if (r) { + dispc.user_handler = NULL; + dispc.user_data = NULL; + } + + return r; +} +EXPORT_SYMBOL(dispc_request_irq); + +void dispc_free_irq(void *dev_id) +{ + devm_free_irq(&dispc.pdev->dev, dispc.irq, &dispc); + + dispc.user_handler = NULL; + dispc.user_data = NULL; +} +EXPORT_SYMBOL(dispc_free_irq); + +/* DISPC HW IP initialisation */ +static int dispc_bind(struct device *dev, struct device *master, void *data) +{ + struct platform_device *pdev = to_platform_device(dev); + u32 rev; + int r = 0; + struct resource *dispc_mem; + struct device_node *np = pdev->dev.of_node; + + dispc.pdev = pdev; + + spin_lock_init(&dispc.control_lock); + + dispc.feat = dispc_get_features(); + if (!dispc.feat) + return -ENODEV; + + dispc_mem = platform_get_resource(dispc.pdev, IORESOURCE_MEM, 0); + if (!dispc_mem) { + DSSERR("can't get IORESOURCE_MEM DISPC\n"); + return -EINVAL; + } + + dispc.base = devm_ioremap(&pdev->dev, dispc_mem->start, + resource_size(dispc_mem)); + if (!dispc.base) { + DSSERR("can't ioremap DISPC\n"); + return -ENOMEM; + } + + dispc.irq = platform_get_irq(dispc.pdev, 0); + if (dispc.irq < 0) { + DSSERR("platform_get_irq failed\n"); + return -ENODEV; + } + + if (np && of_property_read_bool(np, "syscon-pol")) { + dispc.syscon_pol = syscon_regmap_lookup_by_phandle(np, "syscon-pol"); + if (IS_ERR(dispc.syscon_pol)) { + dev_err(&pdev->dev, "failed to get syscon-pol regmap\n"); + return PTR_ERR(dispc.syscon_pol); + } + + if (of_property_read_u32_index(np, "syscon-pol", 1, + &dispc.syscon_pol_offset)) { + dev_err(&pdev->dev, "failed to get syscon-pol offset\n"); + return -EINVAL; + } + } + + pm_runtime_enable(&pdev->dev); + + r = dispc_runtime_get(); + if (r) + goto err_runtime_get; + + _omap_dispc_initial_config(); + + rev = dispc_read_reg(DISPC_REVISION); + dev_dbg(&pdev->dev, "OMAP DISPC rev %d.%d\n", + FLD_GET(rev, 7, 4), FLD_GET(rev, 3, 0)); + + dispc_runtime_put(); + + dss_init_overlay_managers(); + + dss_debugfs_create_file("dispc", dispc_dump_regs); + + return 0; + +err_runtime_get: + pm_runtime_disable(&pdev->dev); + return r; +} + +static void dispc_unbind(struct device *dev, struct device *master, + void *data) +{ + pm_runtime_disable(dev); + + dss_uninit_overlay_managers(); +} + +static const struct component_ops dispc_component_ops = { + .bind = dispc_bind, + .unbind = dispc_unbind, +}; + +static int dispc_probe(struct platform_device *pdev) +{ + return component_add(&pdev->dev, &dispc_component_ops); +} + +static int dispc_remove(struct platform_device *pdev) +{ + component_del(&pdev->dev, &dispc_component_ops); + return 0; +} + +static int dispc_runtime_suspend(struct device *dev) +{ + dispc.is_enabled = false; + /* ensure the dispc_irq_handler sees the is_enabled value */ + smp_wmb(); + /* wait for current handler to finish before turning the DISPC off */ + synchronize_irq(dispc.irq); + + dispc_save_context(); + + return 0; +} + +static int dispc_runtime_resume(struct device *dev) +{ + /* + * The reset value for load mode is 0 (OMAP_DSS_LOAD_CLUT_AND_FRAME) + * but we always initialize it to 2 (OMAP_DSS_LOAD_FRAME_ONLY) in + * _omap_dispc_initial_config(). We can thus use it to detect if + * we have lost register context. + */ + if (REG_GET(DISPC_CONFIG, 2, 1) != OMAP_DSS_LOAD_FRAME_ONLY) { + _omap_dispc_initial_config(); + + dispc_restore_context(); + } + + dispc.is_enabled = true; + /* ensure the dispc_irq_handler sees the is_enabled value */ + smp_wmb(); + + return 0; +} + +static const struct dev_pm_ops dispc_pm_ops = { + .runtime_suspend = dispc_runtime_suspend, + .runtime_resume = dispc_runtime_resume, +}; + +static const struct of_device_id dispc_of_match[] = { + { .compatible = "ti,omap2-dispc", }, + { .compatible = "ti,omap3-dispc", }, + { .compatible = "ti,omap4-dispc", }, + { .compatible = "ti,omap5-dispc", }, + { .compatible = "ti,dra7-dispc", }, + {}, +}; + +static struct platform_driver omap_dispchw_driver = { + .probe = dispc_probe, + .remove = dispc_remove, + .driver = { + .name = "omapdss_dispc", + .pm = &dispc_pm_ops, + .of_match_table = dispc_of_match, + .suppress_bind_attrs = true, + }, +}; + +int __init dispc_init_platform_driver(void) +{ + return platform_driver_register(&omap_dispchw_driver); +} + +void dispc_uninit_platform_driver(void) +{ + platform_driver_unregister(&omap_dispchw_driver); +} |