diff options
Diffstat (limited to 'drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.c')
| -rw-r--r-- | drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.c | 583 |
1 files changed, 583 insertions, 0 deletions
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.c new file mode 100644 index 000000000..da071b1c0 --- /dev/null +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.c @@ -0,0 +1,583 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (c) 2022-2023 Qualcomm Innovation Center, Inc. All rights reserved. + * Copyright (c) 2015-2018, The Linux Foundation. All rights reserved. + */ + +#include "dpu_hwio.h" +#include "dpu_hw_catalog.h" +#include "dpu_hw_intf.h" +#include "dpu_kms.h" +#include "dpu_trace.h" + +#include <linux/iopoll.h> + +#define INTF_TIMING_ENGINE_EN 0x000 +#define INTF_CONFIG 0x004 +#define INTF_HSYNC_CTL 0x008 +#define INTF_VSYNC_PERIOD_F0 0x00C +#define INTF_VSYNC_PERIOD_F1 0x010 +#define INTF_VSYNC_PULSE_WIDTH_F0 0x014 +#define INTF_VSYNC_PULSE_WIDTH_F1 0x018 +#define INTF_DISPLAY_V_START_F0 0x01C +#define INTF_DISPLAY_V_START_F1 0x020 +#define INTF_DISPLAY_V_END_F0 0x024 +#define INTF_DISPLAY_V_END_F1 0x028 +#define INTF_ACTIVE_V_START_F0 0x02C +#define INTF_ACTIVE_V_START_F1 0x030 +#define INTF_ACTIVE_V_END_F0 0x034 +#define INTF_ACTIVE_V_END_F1 0x038 +#define INTF_DISPLAY_HCTL 0x03C +#define INTF_ACTIVE_HCTL 0x040 +#define INTF_BORDER_COLOR 0x044 +#define INTF_UNDERFLOW_COLOR 0x048 +#define INTF_HSYNC_SKEW 0x04C +#define INTF_POLARITY_CTL 0x050 +#define INTF_TEST_CTL 0x054 +#define INTF_TP_COLOR0 0x058 +#define INTF_TP_COLOR1 0x05C +#define INTF_CONFIG2 0x060 +#define INTF_DISPLAY_DATA_HCTL 0x064 +#define INTF_ACTIVE_DATA_HCTL 0x068 + +#define INTF_DSI_CMD_MODE_TRIGGER_EN 0x084 +#define INTF_PANEL_FORMAT 0x090 + +#define INTF_FRAME_LINE_COUNT_EN 0x0A8 +#define INTF_FRAME_COUNT 0x0AC +#define INTF_LINE_COUNT 0x0B0 + +#define INTF_DEFLICKER_CONFIG 0x0F0 +#define INTF_DEFLICKER_STRNG_COEFF 0x0F4 +#define INTF_DEFLICKER_WEAK_COEFF 0x0F8 + +#define INTF_TPG_ENABLE 0x100 +#define INTF_TPG_MAIN_CONTROL 0x104 +#define INTF_TPG_VIDEO_CONFIG 0x108 +#define INTF_TPG_COMPONENT_LIMITS 0x10C +#define INTF_TPG_RECTANGLE 0x110 +#define INTF_TPG_INITIAL_VALUE 0x114 +#define INTF_TPG_BLK_WHITE_PATTERN_FRAMES 0x118 +#define INTF_TPG_RGB_MAPPING 0x11C +#define INTF_PROG_FETCH_START 0x170 +#define INTF_PROG_ROT_START 0x174 + +#define INTF_MISR_CTRL 0x180 +#define INTF_MISR_SIGNATURE 0x184 + +#define INTF_MUX 0x25C +#define INTF_STATUS 0x26C +#define INTF_AVR_CONTROL 0x270 +#define INTF_AVR_MODE 0x274 +#define INTF_AVR_TRIGGER 0x278 +#define INTF_AVR_VTOTAL 0x27C +#define INTF_TEAR_MDP_VSYNC_SEL 0x280 +#define INTF_TEAR_TEAR_CHECK_EN 0x284 +#define INTF_TEAR_SYNC_CONFIG_VSYNC 0x288 +#define INTF_TEAR_SYNC_CONFIG_HEIGHT 0x28C +#define INTF_TEAR_SYNC_WRCOUNT 0x290 +#define INTF_TEAR_VSYNC_INIT_VAL 0x294 +#define INTF_TEAR_INT_COUNT_VAL 0x298 +#define INTF_TEAR_SYNC_THRESH 0x29C +#define INTF_TEAR_START_POS 0x2A0 +#define INTF_TEAR_RD_PTR_IRQ 0x2A4 +#define INTF_TEAR_WR_PTR_IRQ 0x2A8 +#define INTF_TEAR_OUT_LINE_COUNT 0x2AC +#define INTF_TEAR_LINE_COUNT 0x2B0 +#define INTF_TEAR_AUTOREFRESH_CONFIG 0x2B4 + +#define INTF_CFG_ACTIVE_H_EN BIT(29) +#define INTF_CFG_ACTIVE_V_EN BIT(30) + +#define INTF_CFG2_DATABUS_WIDEN BIT(0) +#define INTF_CFG2_DATA_HCTL_EN BIT(4) +#define INTF_CFG2_DCE_DATA_COMPRESS BIT(12) + + +static void dpu_hw_intf_setup_timing_engine(struct dpu_hw_intf *ctx, + const struct dpu_hw_intf_timing_params *p, + const struct dpu_format *fmt) +{ + struct dpu_hw_blk_reg_map *c = &ctx->hw; + u32 hsync_period, vsync_period; + u32 display_v_start, display_v_end; + u32 hsync_start_x, hsync_end_x; + u32 hsync_data_start_x, hsync_data_end_x; + u32 active_h_start, active_h_end; + u32 active_v_start, active_v_end; + u32 active_hctl, display_hctl, hsync_ctl; + u32 polarity_ctl, den_polarity; + u32 panel_format; + u32 intf_cfg, intf_cfg2 = 0; + u32 display_data_hctl = 0, active_data_hctl = 0; + u32 data_width; + bool dp_intf = false; + + /* read interface_cfg */ + intf_cfg = DPU_REG_READ(c, INTF_CONFIG); + + if (ctx->cap->type == INTF_DP) + dp_intf = true; + + hsync_period = p->hsync_pulse_width + p->h_back_porch + p->width + + p->h_front_porch; + vsync_period = p->vsync_pulse_width + p->v_back_porch + p->height + + p->v_front_porch; + + display_v_start = ((p->vsync_pulse_width + p->v_back_porch) * + hsync_period) + p->hsync_skew; + display_v_end = ((vsync_period - p->v_front_porch) * hsync_period) + + p->hsync_skew - 1; + + hsync_start_x = p->h_back_porch + p->hsync_pulse_width; + hsync_end_x = hsync_period - p->h_front_porch - 1; + + if (p->width != p->xres) { /* border fill added */ + active_h_start = hsync_start_x; + active_h_end = active_h_start + p->xres - 1; + } else { + active_h_start = 0; + active_h_end = 0; + } + + if (p->height != p->yres) { /* border fill added */ + active_v_start = display_v_start; + active_v_end = active_v_start + (p->yres * hsync_period) - 1; + } else { + active_v_start = 0; + active_v_end = 0; + } + + if (active_h_end) { + active_hctl = (active_h_end << 16) | active_h_start; + intf_cfg |= INTF_CFG_ACTIVE_H_EN; + } else { + active_hctl = 0; + } + + if (active_v_end) + intf_cfg |= INTF_CFG_ACTIVE_V_EN; + + hsync_ctl = (hsync_period << 16) | p->hsync_pulse_width; + display_hctl = (hsync_end_x << 16) | hsync_start_x; + + /* + * DATA_HCTL_EN controls data timing which can be different from + * video timing. It is recommended to enable it for all cases, except + * if compression is enabled in 1 pixel per clock mode + */ + if (p->wide_bus_en) + intf_cfg2 |= INTF_CFG2_DATABUS_WIDEN | INTF_CFG2_DATA_HCTL_EN; + + data_width = p->width; + + hsync_data_start_x = hsync_start_x; + hsync_data_end_x = hsync_start_x + data_width - 1; + + display_data_hctl = (hsync_data_end_x << 16) | hsync_data_start_x; + + if (dp_intf) { + /* DP timing adjustment */ + display_v_start += p->hsync_pulse_width + p->h_back_porch; + display_v_end -= p->h_front_porch; + + active_h_start = hsync_start_x; + active_h_end = active_h_start + p->xres - 1; + active_v_start = display_v_start; + active_v_end = active_v_start + (p->yres * hsync_period) - 1; + + active_hctl = (active_h_end << 16) | active_h_start; + display_hctl = active_hctl; + + intf_cfg |= INTF_CFG_ACTIVE_H_EN | INTF_CFG_ACTIVE_V_EN; + } + + den_polarity = 0; + polarity_ctl = (den_polarity << 2) | /* DEN Polarity */ + (p->vsync_polarity << 1) | /* VSYNC Polarity */ + (p->hsync_polarity << 0); /* HSYNC Polarity */ + + if (!DPU_FORMAT_IS_YUV(fmt)) + panel_format = (fmt->bits[C0_G_Y] | + (fmt->bits[C1_B_Cb] << 2) | + (fmt->bits[C2_R_Cr] << 4) | + (0x21 << 8)); + else + /* Interface treats all the pixel data in RGB888 format */ + panel_format = (COLOR_8BIT | + (COLOR_8BIT << 2) | + (COLOR_8BIT << 4) | + (0x21 << 8)); + + DPU_REG_WRITE(c, INTF_HSYNC_CTL, hsync_ctl); + DPU_REG_WRITE(c, INTF_VSYNC_PERIOD_F0, vsync_period * hsync_period); + DPU_REG_WRITE(c, INTF_VSYNC_PULSE_WIDTH_F0, + p->vsync_pulse_width * hsync_period); + DPU_REG_WRITE(c, INTF_DISPLAY_HCTL, display_hctl); + DPU_REG_WRITE(c, INTF_DISPLAY_V_START_F0, display_v_start); + DPU_REG_WRITE(c, INTF_DISPLAY_V_END_F0, display_v_end); + DPU_REG_WRITE(c, INTF_ACTIVE_HCTL, active_hctl); + DPU_REG_WRITE(c, INTF_ACTIVE_V_START_F0, active_v_start); + DPU_REG_WRITE(c, INTF_ACTIVE_V_END_F0, active_v_end); + DPU_REG_WRITE(c, INTF_BORDER_COLOR, p->border_clr); + DPU_REG_WRITE(c, INTF_UNDERFLOW_COLOR, p->underflow_clr); + DPU_REG_WRITE(c, INTF_HSYNC_SKEW, p->hsync_skew); + DPU_REG_WRITE(c, INTF_POLARITY_CTL, polarity_ctl); + DPU_REG_WRITE(c, INTF_FRAME_LINE_COUNT_EN, 0x3); + DPU_REG_WRITE(c, INTF_CONFIG, intf_cfg); + DPU_REG_WRITE(c, INTF_PANEL_FORMAT, panel_format); + if (ctx->cap->features & BIT(DPU_DATA_HCTL_EN)) { + DPU_REG_WRITE(c, INTF_CONFIG2, intf_cfg2); + DPU_REG_WRITE(c, INTF_DISPLAY_DATA_HCTL, display_data_hctl); + DPU_REG_WRITE(c, INTF_ACTIVE_DATA_HCTL, active_data_hctl); + } +} + +static void dpu_hw_intf_enable_timing_engine( + struct dpu_hw_intf *intf, + u8 enable) +{ + struct dpu_hw_blk_reg_map *c = &intf->hw; + /* Note: Display interface select is handled in top block hw layer */ + DPU_REG_WRITE(c, INTF_TIMING_ENGINE_EN, enable != 0); +} + +static void dpu_hw_intf_setup_prg_fetch( + struct dpu_hw_intf *intf, + const struct dpu_hw_intf_prog_fetch *fetch) +{ + struct dpu_hw_blk_reg_map *c = &intf->hw; + int fetch_enable; + + /* + * Fetch should always be outside the active lines. If the fetching + * is programmed within active region, hardware behavior is unknown. + */ + + fetch_enable = DPU_REG_READ(c, INTF_CONFIG); + if (fetch->enable) { + fetch_enable |= BIT(31); + DPU_REG_WRITE(c, INTF_PROG_FETCH_START, + fetch->fetch_start); + } else { + fetch_enable &= ~BIT(31); + } + + DPU_REG_WRITE(c, INTF_CONFIG, fetch_enable); +} + +static void dpu_hw_intf_bind_pingpong_blk( + struct dpu_hw_intf *intf, + const enum dpu_pingpong pp) +{ + struct dpu_hw_blk_reg_map *c = &intf->hw; + u32 mux_cfg; + + mux_cfg = DPU_REG_READ(c, INTF_MUX); + mux_cfg &= ~0xf; + + if (pp) + mux_cfg |= (pp - PINGPONG_0) & 0x7; + else + mux_cfg |= 0xf; + + DPU_REG_WRITE(c, INTF_MUX, mux_cfg); +} + +static void dpu_hw_intf_get_status( + struct dpu_hw_intf *intf, + struct dpu_hw_intf_status *s) +{ + struct dpu_hw_blk_reg_map *c = &intf->hw; + unsigned long cap = intf->cap->features; + + if (cap & BIT(DPU_INTF_STATUS_SUPPORTED)) + s->is_en = DPU_REG_READ(c, INTF_STATUS) & BIT(0); + else + s->is_en = DPU_REG_READ(c, INTF_TIMING_ENGINE_EN); + + s->is_prog_fetch_en = !!(DPU_REG_READ(c, INTF_CONFIG) & BIT(31)); + if (s->is_en) { + s->frame_count = DPU_REG_READ(c, INTF_FRAME_COUNT); + s->line_count = DPU_REG_READ(c, INTF_LINE_COUNT); + } else { + s->line_count = 0; + s->frame_count = 0; + } +} + +static u32 dpu_hw_intf_get_line_count(struct dpu_hw_intf *intf) +{ + struct dpu_hw_blk_reg_map *c; + + if (!intf) + return 0; + + c = &intf->hw; + + return DPU_REG_READ(c, INTF_LINE_COUNT); +} + +static void dpu_hw_intf_setup_misr(struct dpu_hw_intf *intf) +{ + dpu_hw_setup_misr(&intf->hw, INTF_MISR_CTRL, 0x1); +} + +static int dpu_hw_intf_collect_misr(struct dpu_hw_intf *intf, u32 *misr_value) +{ + return dpu_hw_collect_misr(&intf->hw, INTF_MISR_CTRL, INTF_MISR_SIGNATURE, misr_value); +} + +static int dpu_hw_intf_enable_te(struct dpu_hw_intf *intf, + struct dpu_hw_tear_check *te) +{ + struct dpu_hw_blk_reg_map *c; + int cfg; + + if (!intf) + return -EINVAL; + + c = &intf->hw; + + cfg = BIT(19); /* VSYNC_COUNTER_EN */ + if (te->hw_vsync_mode) + cfg |= BIT(20); + + cfg |= te->vsync_count; + + DPU_REG_WRITE(c, INTF_TEAR_SYNC_CONFIG_VSYNC, cfg); + DPU_REG_WRITE(c, INTF_TEAR_SYNC_CONFIG_HEIGHT, te->sync_cfg_height); + DPU_REG_WRITE(c, INTF_TEAR_VSYNC_INIT_VAL, te->vsync_init_val); + DPU_REG_WRITE(c, INTF_TEAR_RD_PTR_IRQ, te->rd_ptr_irq); + DPU_REG_WRITE(c, INTF_TEAR_START_POS, te->start_pos); + DPU_REG_WRITE(c, INTF_TEAR_SYNC_THRESH, + ((te->sync_threshold_continue << 16) | + te->sync_threshold_start)); + DPU_REG_WRITE(c, INTF_TEAR_SYNC_WRCOUNT, + (te->start_pos + te->sync_threshold_start + 1)); + + DPU_REG_WRITE(c, INTF_TEAR_TEAR_CHECK_EN, 1); + + return 0; +} + +static void dpu_hw_intf_setup_autorefresh_config(struct dpu_hw_intf *intf, + u32 frame_count, bool enable) +{ + struct dpu_hw_blk_reg_map *c; + u32 refresh_cfg; + + c = &intf->hw; + refresh_cfg = DPU_REG_READ(c, INTF_TEAR_AUTOREFRESH_CONFIG); + if (enable) + refresh_cfg = BIT(31) | frame_count; + else + refresh_cfg &= ~BIT(31); + + DPU_REG_WRITE(c, INTF_TEAR_AUTOREFRESH_CONFIG, refresh_cfg); +} + +/* + * dpu_hw_intf_get_autorefresh_config - Get autorefresh config from HW + * @intf: DPU intf structure + * @frame_count: Used to return the current frame count from hw + * + * Returns: True if autorefresh enabled, false if disabled. + */ +static bool dpu_hw_intf_get_autorefresh_config(struct dpu_hw_intf *intf, + u32 *frame_count) +{ + u32 val = DPU_REG_READ(&intf->hw, INTF_TEAR_AUTOREFRESH_CONFIG); + + if (frame_count != NULL) + *frame_count = val & 0xffff; + return !!((val & BIT(31)) >> 31); +} + +static int dpu_hw_intf_disable_te(struct dpu_hw_intf *intf) +{ + struct dpu_hw_blk_reg_map *c; + + if (!intf) + return -EINVAL; + + c = &intf->hw; + DPU_REG_WRITE(c, INTF_TEAR_TEAR_CHECK_EN, 0); + return 0; +} + +static int dpu_hw_intf_connect_external_te(struct dpu_hw_intf *intf, + bool enable_external_te) +{ + struct dpu_hw_blk_reg_map *c = &intf->hw; + u32 cfg; + int orig; + + if (!intf) + return -EINVAL; + + c = &intf->hw; + cfg = DPU_REG_READ(c, INTF_TEAR_SYNC_CONFIG_VSYNC); + orig = (bool)(cfg & BIT(20)); + if (enable_external_te) + cfg |= BIT(20); + else + cfg &= ~BIT(20); + DPU_REG_WRITE(c, INTF_TEAR_SYNC_CONFIG_VSYNC, cfg); + trace_dpu_intf_connect_ext_te(intf->idx - INTF_0, cfg); + + return orig; +} + +static int dpu_hw_intf_get_vsync_info(struct dpu_hw_intf *intf, + struct dpu_hw_pp_vsync_info *info) +{ + struct dpu_hw_blk_reg_map *c = &intf->hw; + u32 val; + + if (!intf || !info) + return -EINVAL; + + c = &intf->hw; + + val = DPU_REG_READ(c, INTF_TEAR_VSYNC_INIT_VAL); + info->rd_ptr_init_val = val & 0xffff; + + val = DPU_REG_READ(c, INTF_TEAR_INT_COUNT_VAL); + info->rd_ptr_frame_count = (val & 0xffff0000) >> 16; + info->rd_ptr_line_count = val & 0xffff; + + val = DPU_REG_READ(c, INTF_TEAR_LINE_COUNT); + info->wr_ptr_line_count = val & 0xffff; + + val = DPU_REG_READ(c, INTF_FRAME_COUNT); + info->intf_frame_count = val; + + return 0; +} + +static void dpu_hw_intf_vsync_sel(struct dpu_hw_intf *intf, + u32 vsync_source) +{ + struct dpu_hw_blk_reg_map *c; + + if (!intf) + return; + + c = &intf->hw; + + DPU_REG_WRITE(c, INTF_TEAR_MDP_VSYNC_SEL, (vsync_source & 0xf)); +} + +static void dpu_hw_intf_disable_autorefresh(struct dpu_hw_intf *intf, + uint32_t encoder_id, u16 vdisplay) +{ + struct dpu_hw_pp_vsync_info info; + int trial = 0; + + /* If autorefresh is already disabled, we have nothing to do */ + if (!dpu_hw_intf_get_autorefresh_config(intf, NULL)) + return; + + /* + * If autorefresh is enabled, disable it and make sure it is safe to + * proceed with current frame commit/push. Sequence followed is, + * 1. Disable TE + * 2. Disable autorefresh config + * 4. Poll for frame transfer ongoing to be false + * 5. Enable TE back + */ + + dpu_hw_intf_connect_external_te(intf, false); + dpu_hw_intf_setup_autorefresh_config(intf, 0, false); + + do { + udelay(DPU_ENC_MAX_POLL_TIMEOUT_US); + if ((trial * DPU_ENC_MAX_POLL_TIMEOUT_US) + > (KICKOFF_TIMEOUT_MS * USEC_PER_MSEC)) { + DPU_ERROR("enc%d intf%d disable autorefresh failed\n", + encoder_id, intf->idx - INTF_0); + break; + } + + trial++; + + dpu_hw_intf_get_vsync_info(intf, &info); + } while (info.wr_ptr_line_count > 0 && + info.wr_ptr_line_count < vdisplay); + + dpu_hw_intf_connect_external_te(intf, true); + + DPU_DEBUG("enc%d intf%d disabled autorefresh\n", + encoder_id, intf->idx - INTF_0); + +} + +static void dpu_hw_intf_program_intf_cmd_cfg(struct dpu_hw_intf *ctx, + struct dpu_hw_intf_cmd_mode_cfg *cmd_mode_cfg) +{ + u32 intf_cfg2 = DPU_REG_READ(&ctx->hw, INTF_CONFIG2); + + if (cmd_mode_cfg->data_compress) + intf_cfg2 |= INTF_CFG2_DCE_DATA_COMPRESS; + + DPU_REG_WRITE(&ctx->hw, INTF_CONFIG2, intf_cfg2); +} + +static void _setup_intf_ops(struct dpu_hw_intf_ops *ops, + unsigned long cap, const struct dpu_mdss_version *mdss_rev) +{ + ops->setup_timing_gen = dpu_hw_intf_setup_timing_engine; + ops->setup_prg_fetch = dpu_hw_intf_setup_prg_fetch; + ops->get_status = dpu_hw_intf_get_status; + ops->enable_timing = dpu_hw_intf_enable_timing_engine; + ops->get_line_count = dpu_hw_intf_get_line_count; + if (cap & BIT(DPU_INTF_INPUT_CTRL)) + ops->bind_pingpong_blk = dpu_hw_intf_bind_pingpong_blk; + ops->setup_misr = dpu_hw_intf_setup_misr; + ops->collect_misr = dpu_hw_intf_collect_misr; + + if (cap & BIT(DPU_INTF_TE)) { + ops->enable_tearcheck = dpu_hw_intf_enable_te; + ops->disable_tearcheck = dpu_hw_intf_disable_te; + ops->connect_external_te = dpu_hw_intf_connect_external_te; + ops->vsync_sel = dpu_hw_intf_vsync_sel; + ops->disable_autorefresh = dpu_hw_intf_disable_autorefresh; + } + + if (mdss_rev->core_major_ver >= 7) + ops->program_intf_cmd_cfg = dpu_hw_intf_program_intf_cmd_cfg; +} + +struct dpu_hw_intf *dpu_hw_intf_init(const struct dpu_intf_cfg *cfg, + void __iomem *addr, const struct dpu_mdss_version *mdss_rev) +{ + struct dpu_hw_intf *c; + + if (cfg->type == INTF_NONE) { + DPU_DEBUG("Skip intf %d with type NONE\n", cfg->id - INTF_0); + return NULL; + } + + c = kzalloc(sizeof(*c), GFP_KERNEL); + if (!c) + return ERR_PTR(-ENOMEM); + + c->hw.blk_addr = addr + cfg->base; + c->hw.log_mask = DPU_DBG_MASK_INTF; + + /* + * Assign ops + */ + c->idx = cfg->id; + c->cap = cfg; + _setup_intf_ops(&c->ops, c->cap->features, mdss_rev); + + return c; +} + +void dpu_hw_intf_destroy(struct dpu_hw_intf *intf) +{ + kfree(intf); +} + |