diff options
Diffstat (limited to 'drivers/video/fbdev/au1200fb.c')
| -rw-r--r-- | drivers/video/fbdev/au1200fb.c | 1851 |
1 files changed, 1851 insertions, 0 deletions
diff --git a/drivers/video/fbdev/au1200fb.c b/drivers/video/fbdev/au1200fb.c new file mode 100644 index 000000000..fd3ff398d --- /dev/null +++ b/drivers/video/fbdev/au1200fb.c @@ -0,0 +1,1851 @@ +/* + * BRIEF MODULE DESCRIPTION + * Au1200 LCD Driver. + * + * Copyright 2004-2005 AMD + * Author: AMD + * + * Based on: + * linux/drivers/video/skeletonfb.c -- Skeleton for a frame buffer device + * Created 28 Dec 1997 by Geert Uytterhoeven + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + * + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN + * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF + * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON + * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#include <linux/clk.h> +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/kernel.h> +#include <linux/errno.h> +#include <linux/string.h> +#include <linux/mm.h> +#include <linux/fb.h> +#include <linux/init.h> +#include <linux/interrupt.h> +#include <linux/ctype.h> +#include <linux/dma-mapping.h> +#include <linux/slab.h> +#include <linux/uaccess.h> + +#include <asm/mach-au1x00/au1000.h> +#include <asm/mach-au1x00/au1200fb.h> /* platform_data */ +#include "au1200fb.h" + +#define DRIVER_NAME "au1200fb" +#define DRIVER_DESC "LCD controller driver for AU1200 processors" + +#define DEBUG 0 + +#define print_err(f, arg...) printk(KERN_ERR DRIVER_NAME ": " f "\n", ## arg) +#define print_warn(f, arg...) printk(KERN_WARNING DRIVER_NAME ": " f "\n", ## arg) +#define print_info(f, arg...) printk(KERN_INFO DRIVER_NAME ": " f "\n", ## arg) + +#if DEBUG +#define print_dbg(f, arg...) printk(KERN_DEBUG __FILE__ ": " f "\n", ## arg) +#else +#define print_dbg(f, arg...) do {} while (0) +#endif + + +#define AU1200_LCD_FB_IOCTL 0x46FF + +#define AU1200_LCD_SET_SCREEN 1 +#define AU1200_LCD_GET_SCREEN 2 +#define AU1200_LCD_SET_WINDOW 3 +#define AU1200_LCD_GET_WINDOW 4 +#define AU1200_LCD_SET_PANEL 5 +#define AU1200_LCD_GET_PANEL 6 + +#define SCREEN_SIZE (1<< 1) +#define SCREEN_BACKCOLOR (1<< 2) +#define SCREEN_BRIGHTNESS (1<< 3) +#define SCREEN_COLORKEY (1<< 4) +#define SCREEN_MASK (1<< 5) + +struct au1200_lcd_global_regs_t { + unsigned int flags; + unsigned int xsize; + unsigned int ysize; + unsigned int backcolor; + unsigned int brightness; + unsigned int colorkey; + unsigned int mask; + unsigned int panel_choice; + char panel_desc[80]; + +}; + +#define WIN_POSITION (1<< 0) +#define WIN_ALPHA_COLOR (1<< 1) +#define WIN_ALPHA_MODE (1<< 2) +#define WIN_PRIORITY (1<< 3) +#define WIN_CHANNEL (1<< 4) +#define WIN_BUFFER_FORMAT (1<< 5) +#define WIN_COLOR_ORDER (1<< 6) +#define WIN_PIXEL_ORDER (1<< 7) +#define WIN_SIZE (1<< 8) +#define WIN_COLORKEY_MODE (1<< 9) +#define WIN_DOUBLE_BUFFER_MODE (1<< 10) +#define WIN_RAM_ARRAY_MODE (1<< 11) +#define WIN_BUFFER_SCALE (1<< 12) +#define WIN_ENABLE (1<< 13) + +struct au1200_lcd_window_regs_t { + unsigned int flags; + unsigned int xpos; + unsigned int ypos; + unsigned int alpha_color; + unsigned int alpha_mode; + unsigned int priority; + unsigned int channel; + unsigned int buffer_format; + unsigned int color_order; + unsigned int pixel_order; + unsigned int xsize; + unsigned int ysize; + unsigned int colorkey_mode; + unsigned int double_buffer_mode; + unsigned int ram_array_mode; + unsigned int xscale; + unsigned int yscale; + unsigned int enable; +}; + + +struct au1200_lcd_iodata_t { + unsigned int subcmd; + struct au1200_lcd_global_regs_t global; + struct au1200_lcd_window_regs_t window; +}; + +#if defined(__BIG_ENDIAN) +#define LCD_CONTROL_DEFAULT_PO LCD_CONTROL_PO_11 +#else +#define LCD_CONTROL_DEFAULT_PO LCD_CONTROL_PO_00 +#endif +#define LCD_CONTROL_DEFAULT_SBPPF LCD_CONTROL_SBPPF_565 + +/* Private, per-framebuffer management information (independent of the panel itself) */ +struct au1200fb_device { + struct fb_info *fb_info; /* FB driver info record */ + struct au1200fb_platdata *pd; + struct device *dev; + + int plane; + unsigned char* fb_mem; /* FrameBuffer memory map */ + unsigned int fb_len; + dma_addr_t fb_phys; +}; + +/********************************************************************/ + +/* LCD controller restrictions */ +#define AU1200_LCD_MAX_XRES 1280 +#define AU1200_LCD_MAX_YRES 1024 +#define AU1200_LCD_MAX_BPP 32 +#define AU1200_LCD_MAX_CLK 96000000 /* fixme: this needs to go away ? */ +#define AU1200_LCD_NBR_PALETTE_ENTRIES 256 + +/* Default number of visible screen buffer to allocate */ +#define AU1200FB_NBR_VIDEO_BUFFERS 1 + +/* Default maximum number of fb devices to create */ +#define MAX_DEVICE_COUNT 4 + +/* Default window configuration entry to use (see windows[]) */ +#define DEFAULT_WINDOW_INDEX 2 + +/********************************************************************/ + +static struct fb_info *_au1200fb_infos[MAX_DEVICE_COUNT]; +static struct au1200_lcd *lcd = (struct au1200_lcd *) AU1200_LCD_ADDR; +static int device_count = MAX_DEVICE_COUNT; +static int window_index = DEFAULT_WINDOW_INDEX; /* default is zero */ +static int panel_index = 2; /* default is zero */ +static struct window_settings *win; +static struct panel_settings *panel; +static int noblanking = 1; +static int nohwcursor = 0; + +struct window_settings { + unsigned char name[64]; + uint32 mode_backcolor; + uint32 mode_colorkey; + uint32 mode_colorkeymsk; + struct { + int xres; + int yres; + int xpos; + int ypos; + uint32 mode_winctrl1; /* winctrl1[FRM,CCO,PO,PIPE] */ + uint32 mode_winenable; + } w[4]; +}; + +#if defined(__BIG_ENDIAN) +#define LCD_WINCTRL1_PO_16BPP LCD_WINCTRL1_PO_00 +#else +#define LCD_WINCTRL1_PO_16BPP LCD_WINCTRL1_PO_01 +#endif + +/* + * Default window configurations + */ +static struct window_settings windows[] = { + { /* Index 0 */ + "0-FS gfx, 1-video, 2-ovly gfx, 3-ovly gfx", + /* mode_backcolor */ 0x006600ff, + /* mode_colorkey,msk*/ 0, 0, + { + { + /* xres, yres, xpos, ypos */ 0, 0, 0, 0, + /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 | + LCD_WINCTRL1_PO_16BPP, + /* mode_winenable*/ LCD_WINENABLE_WEN0, + }, + { + /* xres, yres, xpos, ypos */ 100, 100, 100, 100, + /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 | + LCD_WINCTRL1_PO_16BPP | + LCD_WINCTRL1_PIPE, + /* mode_winenable*/ LCD_WINENABLE_WEN1, + }, + { + /* xres, yres, xpos, ypos */ 0, 0, 0, 0, + /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 | + LCD_WINCTRL1_PO_16BPP, + /* mode_winenable*/ 0, + }, + { + /* xres, yres, xpos, ypos */ 0, 0, 0, 0, + /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 | + LCD_WINCTRL1_PO_16BPP | + LCD_WINCTRL1_PIPE, + /* mode_winenable*/ 0, + }, + }, + }, + + { /* Index 1 */ + "0-FS gfx, 1-video, 2-ovly gfx, 3-ovly gfx", + /* mode_backcolor */ 0x006600ff, + /* mode_colorkey,msk*/ 0, 0, + { + { + /* xres, yres, xpos, ypos */ 320, 240, 5, 5, + /* mode_winctrl1 */ LCD_WINCTRL1_FRM_24BPP | + LCD_WINCTRL1_PO_00, + /* mode_winenable*/ LCD_WINENABLE_WEN0, + }, + { + /* xres, yres, xpos, ypos */ 0, 0, 0, 0, + /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 + | LCD_WINCTRL1_PO_16BPP, + /* mode_winenable*/ 0, + }, + { + /* xres, yres, xpos, ypos */ 100, 100, 0, 0, + /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 | + LCD_WINCTRL1_PO_16BPP | + LCD_WINCTRL1_PIPE, + /* mode_winenable*/ 0/*LCD_WINENABLE_WEN2*/, + }, + { + /* xres, yres, xpos, ypos */ 200, 25, 0, 0, + /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 | + LCD_WINCTRL1_PO_16BPP | + LCD_WINCTRL1_PIPE, + /* mode_winenable*/ 0, + }, + }, + }, + { /* Index 2 */ + "0-FS gfx, 1-video, 2-ovly gfx, 3-ovly gfx", + /* mode_backcolor */ 0x006600ff, + /* mode_colorkey,msk*/ 0, 0, + { + { + /* xres, yres, xpos, ypos */ 0, 0, 0, 0, + /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 | + LCD_WINCTRL1_PO_16BPP, + /* mode_winenable*/ LCD_WINENABLE_WEN0, + }, + { + /* xres, yres, xpos, ypos */ 0, 0, 0, 0, + /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 | + LCD_WINCTRL1_PO_16BPP, + /* mode_winenable*/ 0, + }, + { + /* xres, yres, xpos, ypos */ 0, 0, 0, 0, + /* mode_winctrl1 */ LCD_WINCTRL1_FRM_32BPP | + LCD_WINCTRL1_PO_00|LCD_WINCTRL1_PIPE, + /* mode_winenable*/ 0/*LCD_WINENABLE_WEN2*/, + }, + { + /* xres, yres, xpos, ypos */ 0, 0, 0, 0, + /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 | + LCD_WINCTRL1_PO_16BPP | + LCD_WINCTRL1_PIPE, + /* mode_winenable*/ 0, + }, + }, + }, + /* Need VGA 640 @ 24bpp, @ 32bpp */ + /* Need VGA 800 @ 24bpp, @ 32bpp */ + /* Need VGA 1024 @ 24bpp, @ 32bpp */ +}; + +/* + * Controller configurations for various panels. + */ + +struct panel_settings +{ + const char name[25]; /* Full name <vendor>_<model> */ + + struct fb_monspecs monspecs; /* FB monitor specs */ + + /* panel timings */ + uint32 mode_screen; + uint32 mode_horztiming; + uint32 mode_verttiming; + uint32 mode_clkcontrol; + uint32 mode_pwmdiv; + uint32 mode_pwmhi; + uint32 mode_outmask; + uint32 mode_fifoctrl; + uint32 mode_backlight; + uint32 lcdclk; +#define Xres min_xres +#define Yres min_yres + u32 min_xres; /* Minimum horizontal resolution */ + u32 max_xres; /* Maximum horizontal resolution */ + u32 min_yres; /* Minimum vertical resolution */ + u32 max_yres; /* Maximum vertical resolution */ +}; + +/********************************************************************/ +/* fixme: Maybe a modedb for the CRT ? otherwise panels should be as-is */ + +/* List of panels known to work with the AU1200 LCD controller. + * To add a new panel, enter the same specifications as the + * Generic_TFT one, and MAKE SURE that it doesn't conflicts + * with the controller restrictions. Restrictions are: + * + * STN color panels: max_bpp <= 12 + * STN mono panels: max_bpp <= 4 + * TFT panels: max_bpp <= 16 + * max_xres <= 800 + * max_yres <= 600 + */ +static struct panel_settings known_lcd_panels[] = +{ + [0] = { /* QVGA 320x240 H:33.3kHz V:110Hz */ + .name = "QVGA_320x240", + .monspecs = { + .modedb = NULL, + .modedb_len = 0, + .hfmin = 30000, + .hfmax = 70000, + .vfmin = 60, + .vfmax = 60, + .dclkmin = 6000000, + .dclkmax = 28000000, + .input = FB_DISP_RGB, + }, + .mode_screen = LCD_SCREEN_SX_N(320) | + LCD_SCREEN_SY_N(240), + .mode_horztiming = 0x00c4623b, + .mode_verttiming = 0x00502814, + .mode_clkcontrol = 0x00020002, /* /4=24Mhz */ + .mode_pwmdiv = 0x00000000, + .mode_pwmhi = 0x00000000, + .mode_outmask = 0x00FFFFFF, + .mode_fifoctrl = 0x2f2f2f2f, + .mode_backlight = 0x00000000, + .lcdclk = 96, + 320, 320, + 240, 240, + }, + + [1] = { /* VGA 640x480 H:30.3kHz V:58Hz */ + .name = "VGA_640x480", + .monspecs = { + .modedb = NULL, + .modedb_len = 0, + .hfmin = 30000, + .hfmax = 70000, + .vfmin = 60, + .vfmax = 60, + .dclkmin = 6000000, + .dclkmax = 28000000, + .input = FB_DISP_RGB, + }, + .mode_screen = 0x13f9df80, + .mode_horztiming = 0x003c5859, + .mode_verttiming = 0x00741201, + .mode_clkcontrol = 0x00020001, /* /4=24Mhz */ + .mode_pwmdiv = 0x00000000, + .mode_pwmhi = 0x00000000, + .mode_outmask = 0x00FFFFFF, + .mode_fifoctrl = 0x2f2f2f2f, + .mode_backlight = 0x00000000, + .lcdclk = 96, + 640, 480, + 640, 480, + }, + + [2] = { /* SVGA 800x600 H:46.1kHz V:69Hz */ + .name = "SVGA_800x600", + .monspecs = { + .modedb = NULL, + .modedb_len = 0, + .hfmin = 30000, + .hfmax = 70000, + .vfmin = 60, + .vfmax = 60, + .dclkmin = 6000000, + .dclkmax = 28000000, + .input = FB_DISP_RGB, + }, + .mode_screen = 0x18fa5780, + .mode_horztiming = 0x00dc7e77, + .mode_verttiming = 0x00584805, + .mode_clkcontrol = 0x00020000, /* /2=48Mhz */ + .mode_pwmdiv = 0x00000000, + .mode_pwmhi = 0x00000000, + .mode_outmask = 0x00FFFFFF, + .mode_fifoctrl = 0x2f2f2f2f, + .mode_backlight = 0x00000000, + .lcdclk = 96, + 800, 800, + 600, 600, + }, + + [3] = { /* XVGA 1024x768 H:56.2kHz V:70Hz */ + .name = "XVGA_1024x768", + .monspecs = { + .modedb = NULL, + .modedb_len = 0, + .hfmin = 30000, + .hfmax = 70000, + .vfmin = 60, + .vfmax = 60, + .dclkmin = 6000000, + .dclkmax = 28000000, + .input = FB_DISP_RGB, + }, + .mode_screen = 0x1ffaff80, + .mode_horztiming = 0x007d0e57, + .mode_verttiming = 0x00740a01, + .mode_clkcontrol = 0x000A0000, /* /1 */ + .mode_pwmdiv = 0x00000000, + .mode_pwmhi = 0x00000000, + .mode_outmask = 0x00FFFFFF, + .mode_fifoctrl = 0x2f2f2f2f, + .mode_backlight = 0x00000000, + .lcdclk = 72, + 1024, 1024, + 768, 768, + }, + + [4] = { /* XVGA XVGA 1280x1024 H:68.5kHz V:65Hz */ + .name = "XVGA_1280x1024", + .monspecs = { + .modedb = NULL, + .modedb_len = 0, + .hfmin = 30000, + .hfmax = 70000, + .vfmin = 60, + .vfmax = 60, + .dclkmin = 6000000, + .dclkmax = 28000000, + .input = FB_DISP_RGB, + }, + .mode_screen = 0x27fbff80, + .mode_horztiming = 0x00cdb2c7, + .mode_verttiming = 0x00600002, + .mode_clkcontrol = 0x000A0000, /* /1 */ + .mode_pwmdiv = 0x00000000, + .mode_pwmhi = 0x00000000, + .mode_outmask = 0x00FFFFFF, + .mode_fifoctrl = 0x2f2f2f2f, + .mode_backlight = 0x00000000, + .lcdclk = 120, + 1280, 1280, + 1024, 1024, + }, + + [5] = { /* Samsung 1024x768 TFT */ + .name = "Samsung_1024x768_TFT", + .monspecs = { + .modedb = NULL, + .modedb_len = 0, + .hfmin = 30000, + .hfmax = 70000, + .vfmin = 60, + .vfmax = 60, + .dclkmin = 6000000, + .dclkmax = 28000000, + .input = FB_DISP_RGB, + }, + .mode_screen = 0x1ffaff80, + .mode_horztiming = 0x018cc677, + .mode_verttiming = 0x00241217, + .mode_clkcontrol = 0x00000000, /* SCB 0x1 /4=24Mhz */ + .mode_pwmdiv = 0x8000063f, /* SCB 0x0 */ + .mode_pwmhi = 0x03400000, /* SCB 0x0 */ + .mode_outmask = 0x00FFFFFF, + .mode_fifoctrl = 0x2f2f2f2f, + .mode_backlight = 0x00000000, + .lcdclk = 96, + 1024, 1024, + 768, 768, + }, + + [6] = { /* Toshiba 640x480 TFT */ + .name = "Toshiba_640x480_TFT", + .monspecs = { + .modedb = NULL, + .modedb_len = 0, + .hfmin = 30000, + .hfmax = 70000, + .vfmin = 60, + .vfmax = 60, + .dclkmin = 6000000, + .dclkmax = 28000000, + .input = FB_DISP_RGB, + }, + .mode_screen = LCD_SCREEN_SX_N(640) | + LCD_SCREEN_SY_N(480), + .mode_horztiming = LCD_HORZTIMING_HPW_N(96) | + LCD_HORZTIMING_HND1_N(13) | LCD_HORZTIMING_HND2_N(51), + .mode_verttiming = LCD_VERTTIMING_VPW_N(2) | + LCD_VERTTIMING_VND1_N(11) | LCD_VERTTIMING_VND2_N(32), + .mode_clkcontrol = 0x00000000, /* /4=24Mhz */ + .mode_pwmdiv = 0x8000063f, + .mode_pwmhi = 0x03400000, + .mode_outmask = 0x00fcfcfc, + .mode_fifoctrl = 0x2f2f2f2f, + .mode_backlight = 0x00000000, + .lcdclk = 96, + 640, 480, + 640, 480, + }, + + [7] = { /* Sharp 320x240 TFT */ + .name = "Sharp_320x240_TFT", + .monspecs = { + .modedb = NULL, + .modedb_len = 0, + .hfmin = 12500, + .hfmax = 20000, + .vfmin = 38, + .vfmax = 81, + .dclkmin = 4500000, + .dclkmax = 6800000, + .input = FB_DISP_RGB, + }, + .mode_screen = LCD_SCREEN_SX_N(320) | + LCD_SCREEN_SY_N(240), + .mode_horztiming = LCD_HORZTIMING_HPW_N(60) | + LCD_HORZTIMING_HND1_N(13) | LCD_HORZTIMING_HND2_N(2), + .mode_verttiming = LCD_VERTTIMING_VPW_N(2) | + LCD_VERTTIMING_VND1_N(2) | LCD_VERTTIMING_VND2_N(5), + .mode_clkcontrol = LCD_CLKCONTROL_PCD_N(7), /*16=6Mhz*/ + .mode_pwmdiv = 0x8000063f, + .mode_pwmhi = 0x03400000, + .mode_outmask = 0x00fcfcfc, + .mode_fifoctrl = 0x2f2f2f2f, + .mode_backlight = 0x00000000, + .lcdclk = 96, /* 96MHz AUXPLL */ + 320, 320, + 240, 240, + }, + + [8] = { /* Toppoly TD070WGCB2 7" 856x480 TFT */ + .name = "Toppoly_TD070WGCB2", + .monspecs = { + .modedb = NULL, + .modedb_len = 0, + .hfmin = 30000, + .hfmax = 70000, + .vfmin = 60, + .vfmax = 60, + .dclkmin = 6000000, + .dclkmax = 28000000, + .input = FB_DISP_RGB, + }, + .mode_screen = LCD_SCREEN_SX_N(856) | + LCD_SCREEN_SY_N(480), + .mode_horztiming = LCD_HORZTIMING_HND2_N(43) | + LCD_HORZTIMING_HND1_N(43) | LCD_HORZTIMING_HPW_N(114), + .mode_verttiming = LCD_VERTTIMING_VND2_N(20) | + LCD_VERTTIMING_VND1_N(21) | LCD_VERTTIMING_VPW_N(4), + .mode_clkcontrol = 0x00020001, /* /4=24Mhz */ + .mode_pwmdiv = 0x8000063f, + .mode_pwmhi = 0x03400000, + .mode_outmask = 0x00fcfcfc, + .mode_fifoctrl = 0x2f2f2f2f, + .mode_backlight = 0x00000000, + .lcdclk = 96, + 856, 856, + 480, 480, + }, + [9] = { + .name = "DB1300_800x480", + .monspecs = { + .modedb = NULL, + .modedb_len = 0, + .hfmin = 30000, + .hfmax = 70000, + .vfmin = 60, + .vfmax = 60, + .dclkmin = 6000000, + .dclkmax = 28000000, + .input = FB_DISP_RGB, + }, + .mode_screen = LCD_SCREEN_SX_N(800) | + LCD_SCREEN_SY_N(480), + .mode_horztiming = LCD_HORZTIMING_HPW_N(5) | + LCD_HORZTIMING_HND1_N(16) | + LCD_HORZTIMING_HND2_N(8), + .mode_verttiming = LCD_VERTTIMING_VPW_N(4) | + LCD_VERTTIMING_VND1_N(8) | + LCD_VERTTIMING_VND2_N(5), + .mode_clkcontrol = LCD_CLKCONTROL_PCD_N(1) | + LCD_CLKCONTROL_IV | + LCD_CLKCONTROL_IH, + .mode_pwmdiv = 0x00000000, + .mode_pwmhi = 0x00000000, + .mode_outmask = 0x00FFFFFF, + .mode_fifoctrl = 0x2f2f2f2f, + .mode_backlight = 0x00000000, + .lcdclk = 96, + 800, 800, + 480, 480, + }, +}; + +#define NUM_PANELS (ARRAY_SIZE(known_lcd_panels)) + +/********************************************************************/ + +static int winbpp (unsigned int winctrl1) +{ + int bits = 0; + + /* how many bits are needed for each pixel format */ + switch (winctrl1 & LCD_WINCTRL1_FRM) { + case LCD_WINCTRL1_FRM_1BPP: + bits = 1; + break; + case LCD_WINCTRL1_FRM_2BPP: + bits = 2; + break; + case LCD_WINCTRL1_FRM_4BPP: + bits = 4; + break; + case LCD_WINCTRL1_FRM_8BPP: + bits = 8; + break; + case LCD_WINCTRL1_FRM_12BPP: + case LCD_WINCTRL1_FRM_16BPP655: + case LCD_WINCTRL1_FRM_16BPP565: + case LCD_WINCTRL1_FRM_16BPP556: + case LCD_WINCTRL1_FRM_16BPPI1555: + case LCD_WINCTRL1_FRM_16BPPI5551: + case LCD_WINCTRL1_FRM_16BPPA1555: + case LCD_WINCTRL1_FRM_16BPPA5551: + bits = 16; + break; + case LCD_WINCTRL1_FRM_24BPP: + case LCD_WINCTRL1_FRM_32BPP: + bits = 32; + break; + } + + return bits; +} + +static int fbinfo2index (struct fb_info *fb_info) +{ + int i; + + for (i = 0; i < device_count; ++i) { + if (fb_info == _au1200fb_infos[i]) + return i; + } + printk("au1200fb: ERROR: fbinfo2index failed!\n"); + return -1; +} + +static int au1200_setlocation (struct au1200fb_device *fbdev, int plane, + int xpos, int ypos) +{ + uint32 winctrl0, winctrl1, winenable, fb_offset = 0; + int xsz, ysz; + + /* FIX!!! NOT CHECKING FOR COMPLETE OFFSCREEN YET */ + + winctrl0 = lcd->window[plane].winctrl0; + winctrl1 = lcd->window[plane].winctrl1; + winctrl0 &= (LCD_WINCTRL0_A | LCD_WINCTRL0_AEN); + winctrl1 &= ~(LCD_WINCTRL1_SZX | LCD_WINCTRL1_SZY); + + /* Check for off-screen adjustments */ + xsz = win->w[plane].xres; + ysz = win->w[plane].yres; + if ((xpos + win->w[plane].xres) > panel->Xres) { + /* Off-screen to the right */ + xsz = panel->Xres - xpos; /* off by 1 ??? */ + /*printk("off screen right\n");*/ + } + + if ((ypos + win->w[plane].yres) > panel->Yres) { + /* Off-screen to the bottom */ + ysz = panel->Yres - ypos; /* off by 1 ??? */ + /*printk("off screen bottom\n");*/ + } + + if (xpos < 0) { + /* Off-screen to the left */ + xsz = win->w[plane].xres + xpos; + fb_offset += (((0 - xpos) * winbpp(lcd->window[plane].winctrl1))/8); + xpos = 0; + /*printk("off screen left\n");*/ + } + + if (ypos < 0) { + /* Off-screen to the top */ + ysz = win->w[plane].yres + ypos; + /* fixme: fb_offset += ((0-ypos)*fb_pars[plane].line_length); */ + ypos = 0; + /*printk("off screen top\n");*/ + } + + /* record settings */ + win->w[plane].xpos = xpos; + win->w[plane].ypos = ypos; + + xsz -= 1; + ysz -= 1; + winctrl0 |= (xpos << 21); + winctrl0 |= (ypos << 10); + winctrl1 |= (xsz << 11); + winctrl1 |= (ysz << 0); + + /* Disable the window while making changes, then restore WINEN */ + winenable = lcd->winenable & (1 << plane); + wmb(); /* drain writebuffer */ + lcd->winenable &= ~(1 << plane); + lcd->window[plane].winctrl0 = winctrl0; + lcd->window[plane].winctrl1 = winctrl1; + lcd->window[plane].winbuf0 = + lcd->window[plane].winbuf1 = fbdev->fb_phys; + lcd->window[plane].winbufctrl = 0; /* select winbuf0 */ + lcd->winenable |= winenable; + wmb(); /* drain writebuffer */ + + return 0; +} + +static void au1200_setpanel(struct panel_settings *newpanel, + struct au1200fb_platdata *pd) +{ + /* + * Perform global setup/init of LCD controller + */ + uint32 winenable; + + /* Make sure all windows disabled */ + winenable = lcd->winenable; + lcd->winenable = 0; + wmb(); /* drain writebuffer */ + /* + * Ensure everything is disabled before reconfiguring + */ + if (lcd->screen & LCD_SCREEN_SEN) { + /* Wait for vertical sync period */ + lcd->intstatus = LCD_INT_SS; + while ((lcd->intstatus & LCD_INT_SS) == 0) + ; + + lcd->screen &= ~LCD_SCREEN_SEN; /*disable the controller*/ + + do { + lcd->intstatus = lcd->intstatus; /*clear interrupts*/ + wmb(); /* drain writebuffer */ + /*wait for controller to shut down*/ + } while ((lcd->intstatus & LCD_INT_SD) == 0); + + /* Call shutdown of current panel (if up) */ + /* this must occur last, because if an external clock is driving + the controller, the clock cannot be turned off before first + shutting down the controller. + */ + if (pd->panel_shutdown) + pd->panel_shutdown(); + } + + /* Newpanel == NULL indicates a shutdown operation only */ + if (newpanel == NULL) + return; + + panel = newpanel; + + printk("Panel(%s), %dx%d\n", panel->name, panel->Xres, panel->Yres); + + /* + * Setup clocking if internal LCD clock source (assumes sys_auxpll valid) + */ + if (!(panel->mode_clkcontrol & LCD_CLKCONTROL_EXT)) + { + struct clk *c = clk_get(NULL, "lcd_intclk"); + long r, pc = panel->lcdclk * 1000000; + + if (!IS_ERR(c)) { + r = clk_round_rate(c, pc); + if ((pc - r) < (pc / 10)) { /* 10% slack */ + clk_set_rate(c, r); + clk_prepare_enable(c); + } + clk_put(c); + } + } + + /* + * Configure panel timings + */ + lcd->screen = panel->mode_screen; + lcd->horztiming = panel->mode_horztiming; + lcd->verttiming = panel->mode_verttiming; + lcd->clkcontrol = panel->mode_clkcontrol; + lcd->pwmdiv = panel->mode_pwmdiv; + lcd->pwmhi = panel->mode_pwmhi; + lcd->outmask = panel->mode_outmask; + lcd->fifoctrl = panel->mode_fifoctrl; + wmb(); /* drain writebuffer */ + + /* fixme: Check window settings to make sure still valid + * for new geometry */ +#if 0 + au1200_setlocation(fbdev, 0, win->w[0].xpos, win->w[0].ypos); + au1200_setlocation(fbdev, 1, win->w[1].xpos, win->w[1].ypos); + au1200_setlocation(fbdev, 2, win->w[2].xpos, win->w[2].ypos); + au1200_setlocation(fbdev, 3, win->w[3].xpos, win->w[3].ypos); +#endif + lcd->winenable = winenable; + + /* + * Re-enable screen now that it is configured + */ + lcd->screen |= LCD_SCREEN_SEN; + wmb(); /* drain writebuffer */ + + /* Call init of panel */ + if (pd->panel_init) + pd->panel_init(); + + /* FIX!!!! not appropriate on panel change!!! Global setup/init */ + lcd->intenable = 0; + lcd->intstatus = ~0; + lcd->backcolor = win->mode_backcolor; + + /* Setup Color Key - FIX!!! */ + lcd->colorkey = win->mode_colorkey; + lcd->colorkeymsk = win->mode_colorkeymsk; + + /* Setup HWCursor - FIX!!! Need to support this eventually */ + lcd->hwc.cursorctrl = 0; + lcd->hwc.cursorpos = 0; + lcd->hwc.cursorcolor0 = 0; + lcd->hwc.cursorcolor1 = 0; + lcd->hwc.cursorcolor2 = 0; + lcd->hwc.cursorcolor3 = 0; + + +#if 0 +#define D(X) printk("%25s: %08X\n", #X, X) + D(lcd->screen); + D(lcd->horztiming); + D(lcd->verttiming); + D(lcd->clkcontrol); + D(lcd->pwmdiv); + D(lcd->pwmhi); + D(lcd->outmask); + D(lcd->fifoctrl); + D(lcd->window[0].winctrl0); + D(lcd->window[0].winctrl1); + D(lcd->window[0].winctrl2); + D(lcd->window[0].winbuf0); + D(lcd->window[0].winbuf1); + D(lcd->window[0].winbufctrl); + D(lcd->window[1].winctrl0); + D(lcd->window[1].winctrl1); + D(lcd->window[1].winctrl2); + D(lcd->window[1].winbuf0); + D(lcd->window[1].winbuf1); + D(lcd->window[1].winbufctrl); + D(lcd->window[2].winctrl0); + D(lcd->window[2].winctrl1); + D(lcd->window[2].winctrl2); + D(lcd->window[2].winbuf0); + D(lcd->window[2].winbuf1); + D(lcd->window[2].winbufctrl); + D(lcd->window[3].winctrl0); + D(lcd->window[3].winctrl1); + D(lcd->window[3].winctrl2); + D(lcd->window[3].winbuf0); + D(lcd->window[3].winbuf1); + D(lcd->window[3].winbufctrl); + D(lcd->winenable); + D(lcd->intenable); + D(lcd->intstatus); + D(lcd->backcolor); + D(lcd->winenable); + D(lcd->colorkey); + D(lcd->colorkeymsk); + D(lcd->hwc.cursorctrl); + D(lcd->hwc.cursorpos); + D(lcd->hwc.cursorcolor0); + D(lcd->hwc.cursorcolor1); + D(lcd->hwc.cursorcolor2); + D(lcd->hwc.cursorcolor3); +#endif +} + +static void au1200_setmode(struct au1200fb_device *fbdev) +{ + int plane = fbdev->plane; + /* Window/plane setup */ + lcd->window[plane].winctrl1 = ( 0 + | LCD_WINCTRL1_PRI_N(plane) + | win->w[plane].mode_winctrl1 /* FRM,CCO,PO,PIPE */ + ) ; + + au1200_setlocation(fbdev, plane, win->w[plane].xpos, win->w[plane].ypos); + + lcd->window[plane].winctrl2 = ( 0 + | LCD_WINCTRL2_CKMODE_00 + | LCD_WINCTRL2_DBM + | LCD_WINCTRL2_BX_N(fbdev->fb_info->fix.line_length) + | LCD_WINCTRL2_SCX_1 + | LCD_WINCTRL2_SCY_1 + ) ; + lcd->winenable |= win->w[plane].mode_winenable; + wmb(); /* drain writebuffer */ +} + + +/* Inline helpers */ + +/*#define panel_is_dual(panel) ((panel->mode_screen & LCD_SCREEN_PT) == LCD_SCREEN_PT_010)*/ +/*#define panel_is_active(panel)((panel->mode_screen & LCD_SCREEN_PT) == LCD_SCREEN_PT_010)*/ + +#define panel_is_color(panel) ((panel->mode_screen & LCD_SCREEN_PT) <= LCD_SCREEN_PT_CDSTN) + +/* Bitfields format supported by the controller. */ +static struct fb_bitfield rgb_bitfields[][4] = { + /* Red, Green, Blue, Transp */ + [LCD_WINCTRL1_FRM_16BPP655 >> 25] = + { { 10, 6, 0 }, { 5, 5, 0 }, { 0, 5, 0 }, { 0, 0, 0 } }, + + [LCD_WINCTRL1_FRM_16BPP565 >> 25] = + { { 11, 5, 0 }, { 5, 6, 0 }, { 0, 5, 0 }, { 0, 0, 0 } }, + + [LCD_WINCTRL1_FRM_16BPP556 >> 25] = + { { 11, 5, 0 }, { 6, 5, 0 }, { 0, 6, 0 }, { 0, 0, 0 } }, + + [LCD_WINCTRL1_FRM_16BPPI1555 >> 25] = + { { 10, 5, 0 }, { 5, 5, 0 }, { 0, 5, 0 }, { 0, 0, 0 } }, + + [LCD_WINCTRL1_FRM_16BPPI5551 >> 25] = + { { 11, 5, 0 }, { 6, 5, 0 }, { 1, 5, 0 }, { 0, 0, 0 } }, + + [LCD_WINCTRL1_FRM_16BPPA1555 >> 25] = + { { 10, 5, 0 }, { 5, 5, 0 }, { 0, 5, 0 }, { 15, 1, 0 } }, + + [LCD_WINCTRL1_FRM_16BPPA5551 >> 25] = + { { 11, 5, 0 }, { 6, 5, 0 }, { 1, 5, 0 }, { 0, 1, 0 } }, + + [LCD_WINCTRL1_FRM_24BPP >> 25] = + { { 16, 8, 0 }, { 8, 8, 0 }, { 0, 8, 0 }, { 0, 0, 0 } }, + + [LCD_WINCTRL1_FRM_32BPP >> 25] = + { { 16, 8, 0 }, { 8, 8, 0 }, { 0, 8, 0 }, { 24, 0, 0 } }, +}; + +/*-------------------------------------------------------------------------*/ + +/* Helpers */ + +static void au1200fb_update_fbinfo(struct fb_info *fbi) +{ + /* FIX!!!! This also needs to take the window pixel format into account!!! */ + + /* Update var-dependent FB info */ + if (panel_is_color(panel)) { + if (fbi->var.bits_per_pixel <= 8) { + /* palettized */ + fbi->fix.visual = FB_VISUAL_PSEUDOCOLOR; + fbi->fix.line_length = fbi->var.xres_virtual / + (8/fbi->var.bits_per_pixel); + } else { + /* non-palettized */ + fbi->fix.visual = FB_VISUAL_TRUECOLOR; + fbi->fix.line_length = fbi->var.xres_virtual * (fbi->var.bits_per_pixel / 8); + } + } else { + /* mono FIX!!! mono 8 and 4 bits */ + fbi->fix.visual = FB_VISUAL_MONO10; + fbi->fix.line_length = fbi->var.xres_virtual / 8; + } + + fbi->screen_size = fbi->fix.line_length * fbi->var.yres_virtual; + print_dbg("line length: %d\n", fbi->fix.line_length); + print_dbg("bits_per_pixel: %d\n", fbi->var.bits_per_pixel); +} + +/*-------------------------------------------------------------------------*/ + +/* AU1200 framebuffer driver */ + +/* fb_check_var + * Validate var settings with hardware restrictions and modify it if necessary + */ +static int au1200fb_fb_check_var(struct fb_var_screeninfo *var, + struct fb_info *fbi) +{ + struct au1200fb_device *fbdev = fbi->par; + u32 pixclock; + int screen_size, plane; + + if (!var->pixclock) + return -EINVAL; + + plane = fbdev->plane; + + /* Make sure that the mode respect all LCD controller and + * panel restrictions. */ + var->xres = win->w[plane].xres; + var->yres = win->w[plane].yres; + + /* No need for virtual resolution support */ + var->xres_virtual = var->xres; + var->yres_virtual = var->yres; + + var->bits_per_pixel = winbpp(win->w[plane].mode_winctrl1); + + screen_size = var->xres_virtual * var->yres_virtual; + if (var->bits_per_pixel > 8) screen_size *= (var->bits_per_pixel / 8); + else screen_size /= (8/var->bits_per_pixel); + + if (fbdev->fb_len < screen_size) + return -EINVAL; /* Virtual screen is to big, abort */ + + /* FIX!!!! what are the implicaitons of ignoring this for windows ??? */ + /* The max LCD clock is fixed to 48MHz (value of AUX_CLK). The pixel + * clock can only be obtain by dividing this value by an even integer. + * Fallback to a slower pixel clock if necessary. */ + pixclock = max((u32)(PICOS2KHZ(var->pixclock) * 1000), fbi->monspecs.dclkmin); + pixclock = min3(pixclock, fbi->monspecs.dclkmax, (u32)AU1200_LCD_MAX_CLK/2); + + if (AU1200_LCD_MAX_CLK % pixclock) { + int diff = AU1200_LCD_MAX_CLK % pixclock; + pixclock -= diff; + } + + var->pixclock = KHZ2PICOS(pixclock/1000); +#if 0 + if (!panel_is_active(panel)) { + int pcd = AU1200_LCD_MAX_CLK / (pixclock * 2) - 1; + + if (!panel_is_color(panel) + && (panel->control_base & LCD_CONTROL_MPI) && (pcd < 3)) { + /* STN 8bit mono panel support is up to 6MHz pixclock */ + var->pixclock = KHZ2PICOS(6000); + } else if (!pcd) { + /* Other STN panel support is up to 12MHz */ + var->pixclock = KHZ2PICOS(12000); + } + } +#endif + /* Set bitfield accordingly */ + switch (var->bits_per_pixel) { + case 16: + { + /* 16bpp True color. + * These must be set to MATCH WINCTRL[FORM] */ + int idx; + idx = (win->w[0].mode_winctrl1 & LCD_WINCTRL1_FRM) >> 25; + var->red = rgb_bitfields[idx][0]; + var->green = rgb_bitfields[idx][1]; + var->blue = rgb_bitfields[idx][2]; + var->transp = rgb_bitfields[idx][3]; + break; + } + + case 32: + { + /* 32bpp True color. + * These must be set to MATCH WINCTRL[FORM] */ + int idx; + idx = (win->w[0].mode_winctrl1 & LCD_WINCTRL1_FRM) >> 25; + var->red = rgb_bitfields[idx][0]; + var->green = rgb_bitfields[idx][1]; + var->blue = rgb_bitfields[idx][2]; + var->transp = rgb_bitfields[idx][3]; + break; + } + default: + print_dbg("Unsupported depth %dbpp", var->bits_per_pixel); + return -EINVAL; + } + + return 0; +} + +/* fb_set_par + * Set hardware with var settings. This will enable the controller with a + * specific mode, normally validated with the fb_check_var method + */ +static int au1200fb_fb_set_par(struct fb_info *fbi) +{ + struct au1200fb_device *fbdev = fbi->par; + + au1200fb_update_fbinfo(fbi); + au1200_setmode(fbdev); + + return 0; +} + +/* fb_setcolreg + * Set color in LCD palette. + */ +static int au1200fb_fb_setcolreg(unsigned regno, unsigned red, unsigned green, + unsigned blue, unsigned transp, struct fb_info *fbi) +{ + volatile u32 *palette = lcd->palette; + u32 value; + + if (regno > (AU1200_LCD_NBR_PALETTE_ENTRIES - 1)) + return -EINVAL; + + if (fbi->var.grayscale) { + /* Convert color to grayscale */ + red = green = blue = + (19595 * red + 38470 * green + 7471 * blue) >> 16; + } + + if (fbi->fix.visual == FB_VISUAL_TRUECOLOR) { + /* Place color in the pseudopalette */ + if (regno > 16) + return -EINVAL; + + palette = (u32*) fbi->pseudo_palette; + + red >>= (16 - fbi->var.red.length); + green >>= (16 - fbi->var.green.length); + blue >>= (16 - fbi->var.blue.length); + + value = (red << fbi->var.red.offset) | + (green << fbi->var.green.offset)| + (blue << fbi->var.blue.offset); + value &= 0xFFFF; + + } else if (1 /*FIX!!! panel_is_active(fbdev->panel)*/) { + /* COLOR TFT PALLETTIZED (use RGB 565) */ + value = (red & 0xF800)|((green >> 5) & + 0x07E0)|((blue >> 11) & 0x001F); + value &= 0xFFFF; + + } else if (0 /*panel_is_color(fbdev->panel)*/) { + /* COLOR STN MODE */ + value = 0x1234; + value &= 0xFFF; + } else { + /* MONOCHROME MODE */ + value = (green >> 12) & 0x000F; + value &= 0xF; + } + + palette[regno] = value; + + return 0; +} + +/* fb_blank + * Blank the screen. Depending on the mode, the screen will be + * activated with the backlight color, or desactivated + */ +static int au1200fb_fb_blank(int blank_mode, struct fb_info *fbi) +{ + struct au1200fb_device *fbdev = fbi->par; + + /* Short-circuit screen blanking */ + if (noblanking) + return 0; + + switch (blank_mode) { + + case FB_BLANK_UNBLANK: + case FB_BLANK_NORMAL: + /* printk("turn on panel\n"); */ + au1200_setpanel(panel, fbdev->pd); + break; + case FB_BLANK_VSYNC_SUSPEND: + case FB_BLANK_HSYNC_SUSPEND: + case FB_BLANK_POWERDOWN: + /* printk("turn off panel\n"); */ + au1200_setpanel(NULL, fbdev->pd); + break; + default: + break; + + } + + /* FB_BLANK_NORMAL is a soft blank */ + return (blank_mode == FB_BLANK_NORMAL) ? -EINVAL : 0; +} + +/* fb_mmap + * Map video memory in user space. We don't use the generic fb_mmap + * method mainly to allow the use of the TLB streaming flag (CCA=6) + */ +static int au1200fb_fb_mmap(struct fb_info *info, struct vm_area_struct *vma) +{ + struct au1200fb_device *fbdev = info->par; + + return dma_mmap_coherent(fbdev->dev, vma, + fbdev->fb_mem, fbdev->fb_phys, fbdev->fb_len); +} + +static void set_global(u_int cmd, struct au1200_lcd_global_regs_t *pdata) +{ + + unsigned int hi1, divider; + + /* SCREEN_SIZE: user cannot reset size, must switch panel choice */ + + if (pdata->flags & SCREEN_BACKCOLOR) + lcd->backcolor = pdata->backcolor; + + if (pdata->flags & SCREEN_BRIGHTNESS) { + + // limit brightness pwm duty to >= 30/1600 + if (pdata->brightness < 30) { + pdata->brightness = 30; + } + divider = (lcd->pwmdiv & 0x3FFFF) + 1; + hi1 = (((pdata->brightness & 0xFF)+1) * divider >> 8); + lcd->pwmhi &= 0xFFFF; + lcd->pwmhi |= (hi1 << 16); + } + + if (pdata->flags & SCREEN_COLORKEY) + lcd->colorkey = pdata->colorkey; + + if (pdata->flags & SCREEN_MASK) + lcd->colorkeymsk = pdata->mask; + wmb(); /* drain writebuffer */ +} + +static void get_global(u_int cmd, struct au1200_lcd_global_regs_t *pdata) +{ + unsigned int hi1, divider; + + pdata->xsize = ((lcd->screen & LCD_SCREEN_SX) >> 19) + 1; + pdata->ysize = ((lcd->screen & LCD_SCREEN_SY) >> 8) + 1; + + pdata->backcolor = lcd->backcolor; + pdata->colorkey = lcd->colorkey; + pdata->mask = lcd->colorkeymsk; + + // brightness + hi1 = (lcd->pwmhi >> 16) + 1; + divider = (lcd->pwmdiv & 0x3FFFF) + 1; + pdata->brightness = ((hi1 << 8) / divider) - 1; + wmb(); /* drain writebuffer */ +} + +static void set_window(unsigned int plane, + struct au1200_lcd_window_regs_t *pdata) +{ + unsigned int val, bpp; + + /* Window control register 0 */ + if (pdata->flags & WIN_POSITION) { + val = lcd->window[plane].winctrl0 & ~(LCD_WINCTRL0_OX | + LCD_WINCTRL0_OY); + val |= ((pdata->xpos << 21) & LCD_WINCTRL0_OX); + val |= ((pdata->ypos << 10) & LCD_WINCTRL0_OY); + lcd->window[plane].winctrl0 = val; + } + if (pdata->flags & WIN_ALPHA_COLOR) { + val = lcd->window[plane].winctrl0 & ~(LCD_WINCTRL0_A); + val |= ((pdata->alpha_color << 2) & LCD_WINCTRL0_A); + lcd->window[plane].winctrl0 = val; + } + if (pdata->flags & WIN_ALPHA_MODE) { + val = lcd->window[plane].winctrl0 & ~(LCD_WINCTRL0_AEN); + val |= ((pdata->alpha_mode << 1) & LCD_WINCTRL0_AEN); + lcd->window[plane].winctrl0 = val; + } + + /* Window control register 1 */ + if (pdata->flags & WIN_PRIORITY) { + val = lcd->window[plane].winctrl1 & ~(LCD_WINCTRL1_PRI); + val |= ((pdata->priority << 30) & LCD_WINCTRL1_PRI); + lcd->window[plane].winctrl1 = val; + } + if (pdata->flags & WIN_CHANNEL) { + val = lcd->window[plane].winctrl1 & ~(LCD_WINCTRL1_PIPE); + val |= ((pdata->channel << 29) & LCD_WINCTRL1_PIPE); + lcd->window[plane].winctrl1 = val; + } + if (pdata->flags & WIN_BUFFER_FORMAT) { + val = lcd->window[plane].winctrl1 & ~(LCD_WINCTRL1_FRM); + val |= ((pdata->buffer_format << 25) & LCD_WINCTRL1_FRM); + lcd->window[plane].winctrl1 = val; + } + if (pdata->flags & WIN_COLOR_ORDER) { + val = lcd->window[plane].winctrl1 & ~(LCD_WINCTRL1_CCO); + val |= ((pdata->color_order << 24) & LCD_WINCTRL1_CCO); + lcd->window[plane].winctrl1 = val; + } + if (pdata->flags & WIN_PIXEL_ORDER) { + val = lcd->window[plane].winctrl1 & ~(LCD_WINCTRL1_PO); + val |= ((pdata->pixel_order << 22) & LCD_WINCTRL1_PO); + lcd->window[plane].winctrl1 = val; + } + if (pdata->flags & WIN_SIZE) { + val = lcd->window[plane].winctrl1 & ~(LCD_WINCTRL1_SZX | + LCD_WINCTRL1_SZY); + val |= (((pdata->xsize << 11) - 1) & LCD_WINCTRL1_SZX); + val |= (((pdata->ysize) - 1) & LCD_WINCTRL1_SZY); + lcd->window[plane].winctrl1 = val; + /* program buffer line width */ + bpp = winbpp(val) / 8; + val = lcd->window[plane].winctrl2 & ~(LCD_WINCTRL2_BX); + val |= (((pdata->xsize * bpp) << 8) & LCD_WINCTRL2_BX); + lcd->window[plane].winctrl2 = val; + } + + /* Window control register 2 */ + if (pdata->flags & WIN_COLORKEY_MODE) { + val = lcd->window[plane].winctrl2 & ~(LCD_WINCTRL2_CKMODE); + val |= ((pdata->colorkey_mode << 24) & LCD_WINCTRL2_CKMODE); + lcd->window[plane].winctrl2 = val; + } + if (pdata->flags & WIN_DOUBLE_BUFFER_MODE) { + val = lcd->window[plane].winctrl2 & ~(LCD_WINCTRL2_DBM); + val |= ((pdata->double_buffer_mode << 23) & LCD_WINCTRL2_DBM); + lcd->window[plane].winctrl2 = val; + } + if (pdata->flags & WIN_RAM_ARRAY_MODE) { + val = lcd->window[plane].winctrl2 & ~(LCD_WINCTRL2_RAM); + val |= ((pdata->ram_array_mode << 21) & LCD_WINCTRL2_RAM); + lcd->window[plane].winctrl2 = val; + } + + /* Buffer line width programmed with WIN_SIZE */ + + if (pdata->flags & WIN_BUFFER_SCALE) { + val = lcd->window[plane].winctrl2 & ~(LCD_WINCTRL2_SCX | + LCD_WINCTRL2_SCY); + val |= ((pdata->xsize << 11) & LCD_WINCTRL2_SCX); + val |= ((pdata->ysize) & LCD_WINCTRL2_SCY); + lcd->window[plane].winctrl2 = val; + } + + if (pdata->flags & WIN_ENABLE) { + val = lcd->winenable; + val &= ~(1<<plane); + val |= (pdata->enable & 1) << plane; + lcd->winenable = val; + } + wmb(); /* drain writebuffer */ +} + +static void get_window(unsigned int plane, + struct au1200_lcd_window_regs_t *pdata) +{ + /* Window control register 0 */ + pdata->xpos = (lcd->window[plane].winctrl0 & LCD_WINCTRL0_OX) >> 21; + pdata->ypos = (lcd->window[plane].winctrl0 & LCD_WINCTRL0_OY) >> 10; + pdata->alpha_color = (lcd->window[plane].winctrl0 & LCD_WINCTRL0_A) >> 2; + pdata->alpha_mode = (lcd->window[plane].winctrl0 & LCD_WINCTRL0_AEN) >> 1; + + /* Window control register 1 */ + pdata->priority = (lcd->window[plane].winctrl1& LCD_WINCTRL1_PRI) >> 30; + pdata->channel = (lcd->window[plane].winctrl1 & LCD_WINCTRL1_PIPE) >> 29; + pdata->buffer_format = (lcd->window[plane].winctrl1 & LCD_WINCTRL1_FRM) >> 25; + pdata->color_order = (lcd->window[plane].winctrl1 & LCD_WINCTRL1_CCO) >> 24; + pdata->pixel_order = (lcd->window[plane].winctrl1 & LCD_WINCTRL1_PO) >> 22; + pdata->xsize = ((lcd->window[plane].winctrl1 & LCD_WINCTRL1_SZX) >> 11) + 1; + pdata->ysize = (lcd->window[plane].winctrl1 & LCD_WINCTRL1_SZY) + 1; + + /* Window control register 2 */ + pdata->colorkey_mode = (lcd->window[plane].winctrl2 & LCD_WINCTRL2_CKMODE) >> 24; + pdata->double_buffer_mode = (lcd->window[plane].winctrl2 & LCD_WINCTRL2_DBM) >> 23; + pdata->ram_array_mode = (lcd->window[plane].winctrl2 & LCD_WINCTRL2_RAM) >> 21; + + pdata->enable = (lcd->winenable >> plane) & 1; + wmb(); /* drain writebuffer */ +} + +static int au1200fb_ioctl(struct fb_info *info, unsigned int cmd, + unsigned long arg) +{ + struct au1200fb_device *fbdev = info->par; + int plane; + int val; + + plane = fbinfo2index(info); + print_dbg("au1200fb: ioctl %d on plane %d\n", cmd, plane); + + if (cmd == AU1200_LCD_FB_IOCTL) { + struct au1200_lcd_iodata_t iodata; + + if (copy_from_user(&iodata, (void __user *) arg, sizeof(iodata))) + return -EFAULT; + + print_dbg("FB IOCTL called\n"); + + switch (iodata.subcmd) { + case AU1200_LCD_SET_SCREEN: + print_dbg("AU1200_LCD_SET_SCREEN\n"); + set_global(cmd, &iodata.global); + break; + + case AU1200_LCD_GET_SCREEN: + print_dbg("AU1200_LCD_GET_SCREEN\n"); + get_global(cmd, &iodata.global); + break; + + case AU1200_LCD_SET_WINDOW: + print_dbg("AU1200_LCD_SET_WINDOW\n"); + set_window(plane, &iodata.window); + break; + + case AU1200_LCD_GET_WINDOW: + print_dbg("AU1200_LCD_GET_WINDOW\n"); + get_window(plane, &iodata.window); + break; + + case AU1200_LCD_SET_PANEL: + print_dbg("AU1200_LCD_SET_PANEL\n"); + if ((iodata.global.panel_choice >= 0) && + (iodata.global.panel_choice < + NUM_PANELS)) + { + struct panel_settings *newpanel; + panel_index = iodata.global.panel_choice; + newpanel = &known_lcd_panels[panel_index]; + au1200_setpanel(newpanel, fbdev->pd); + } + break; + + case AU1200_LCD_GET_PANEL: + print_dbg("AU1200_LCD_GET_PANEL\n"); + iodata.global.panel_choice = panel_index; + break; + + default: + return -EINVAL; + } + + val = copy_to_user((void __user *) arg, &iodata, sizeof(iodata)); + if (val) { + print_dbg("error: could not copy %d bytes\n", val); + return -EFAULT; + } + } + + return 0; +} + + +static const struct fb_ops au1200fb_fb_ops = { + .owner = THIS_MODULE, + .fb_check_var = au1200fb_fb_check_var, + .fb_set_par = au1200fb_fb_set_par, + .fb_setcolreg = au1200fb_fb_setcolreg, + .fb_blank = au1200fb_fb_blank, + .fb_fillrect = sys_fillrect, + .fb_copyarea = sys_copyarea, + .fb_imageblit = sys_imageblit, + .fb_read = fb_sys_read, + .fb_write = fb_sys_write, + .fb_sync = NULL, + .fb_ioctl = au1200fb_ioctl, + .fb_mmap = au1200fb_fb_mmap, +}; + +/*-------------------------------------------------------------------------*/ + +static irqreturn_t au1200fb_handle_irq(int irq, void* dev_id) +{ + /* Nothing to do for now, just clear any pending interrupt */ + lcd->intstatus = lcd->intstatus; + wmb(); /* drain writebuffer */ + + return IRQ_HANDLED; +} + +/*-------------------------------------------------------------------------*/ + +/* AU1200 LCD device probe helpers */ + +static int au1200fb_init_fbinfo(struct au1200fb_device *fbdev) +{ + struct fb_info *fbi = fbdev->fb_info; + int bpp, ret; + + fbi->fbops = &au1200fb_fb_ops; + + bpp = winbpp(win->w[fbdev->plane].mode_winctrl1); + + /* Copy monitor specs from panel data */ + /* fixme: we're setting up LCD controller windows, so these dont give a + damn as to what the monitor specs are (the panel itself does, but that + isn't done here...so maybe need a generic catchall monitor setting??? */ + memcpy(&fbi->monspecs, &panel->monspecs, sizeof(struct fb_monspecs)); + + /* We first try the user mode passed in argument. If that failed, + * or if no one has been specified, we default to the first mode of the + * panel list. Note that after this call, var data will be set */ + if (!fb_find_mode(&fbi->var, + fbi, + NULL, /* drv_info.opt_mode, */ + fbi->monspecs.modedb, + fbi->monspecs.modedb_len, + fbi->monspecs.modedb, + bpp)) { + + print_err("Cannot find valid mode for panel %s", panel->name); + return -EFAULT; + } + + fbi->pseudo_palette = kcalloc(16, sizeof(u32), GFP_KERNEL); + if (!fbi->pseudo_palette) + return -ENOMEM; + + ret = fb_alloc_cmap(&fbi->cmap, AU1200_LCD_NBR_PALETTE_ENTRIES, 0); + if (ret < 0) { + print_err("Fail to allocate colormap (%d entries)", + AU1200_LCD_NBR_PALETTE_ENTRIES); + return ret; + } + + strncpy(fbi->fix.id, "AU1200", sizeof(fbi->fix.id)); + fbi->fix.smem_start = fbdev->fb_phys; + fbi->fix.smem_len = fbdev->fb_len; + fbi->fix.type = FB_TYPE_PACKED_PIXELS; + fbi->fix.xpanstep = 0; + fbi->fix.ypanstep = 0; + fbi->fix.mmio_start = 0; + fbi->fix.mmio_len = 0; + fbi->fix.accel = FB_ACCEL_NONE; + + fbi->screen_base = (char __iomem *) fbdev->fb_mem; + + au1200fb_update_fbinfo(fbi); + + return 0; +} + +/*-------------------------------------------------------------------------*/ + + +static int au1200fb_setup(struct au1200fb_platdata *pd) +{ + char *options = NULL; + char *this_opt, *endptr; + int num_panels = ARRAY_SIZE(known_lcd_panels); + int panel_idx = -1; + + fb_get_options(DRIVER_NAME, &options); + + if (!options) + goto out; + + while ((this_opt = strsep(&options, ",")) != NULL) { + /* Panel option - can be panel name, + * "bs" for board-switch, or number/index */ + if (!strncmp(this_opt, "panel:", 6)) { + int i; + long int li; + char *endptr; + this_opt += 6; + /* First check for index, which allows + * to short circuit this mess */ + li = simple_strtol(this_opt, &endptr, 0); + if (*endptr == '\0') + panel_idx = (int)li; + else if (strcmp(this_opt, "bs") == 0) + panel_idx = pd->panel_index(); + else { + for (i = 0; i < num_panels; i++) { + if (!strcmp(this_opt, + known_lcd_panels[i].name)) { + panel_idx = i; + break; + } + } + } + if ((panel_idx < 0) || (panel_idx >= num_panels)) + print_warn("Panel %s not supported!", this_opt); + else + panel_index = panel_idx; + + } else if (strncmp(this_opt, "nohwcursor", 10) == 0) + nohwcursor = 1; + else if (strncmp(this_opt, "devices:", 8) == 0) { + this_opt += 8; + device_count = simple_strtol(this_opt, &endptr, 0); + if ((device_count < 0) || + (device_count > MAX_DEVICE_COUNT)) + device_count = MAX_DEVICE_COUNT; + } else if (strncmp(this_opt, "wincfg:", 7) == 0) { + this_opt += 7; + window_index = simple_strtol(this_opt, &endptr, 0); + if ((window_index < 0) || + (window_index >= ARRAY_SIZE(windows))) + window_index = DEFAULT_WINDOW_INDEX; + } else if (strncmp(this_opt, "off", 3) == 0) + return 1; + else + print_warn("Unsupported option \"%s\"", this_opt); + } + +out: + return 0; +} + +/* AU1200 LCD controller device driver */ +static int au1200fb_drv_probe(struct platform_device *dev) +{ + struct au1200fb_device *fbdev; + struct au1200fb_platdata *pd; + struct fb_info *fbi = NULL; + int bpp, plane, ret, irq; + + print_info("" DRIVER_DESC ""); + + pd = dev->dev.platform_data; + if (!pd) + return -ENODEV; + + /* Setup driver with options */ + if (au1200fb_setup(pd)) + return -ENODEV; + + /* Point to the panel selected */ + panel = &known_lcd_panels[panel_index]; + win = &windows[window_index]; + + printk(DRIVER_NAME ": Panel %d %s\n", panel_index, panel->name); + printk(DRIVER_NAME ": Win %d %s\n", window_index, win->name); + + for (plane = 0; plane < device_count; ++plane) { + bpp = winbpp(win->w[plane].mode_winctrl1); + if (win->w[plane].xres == 0) + win->w[plane].xres = panel->Xres; + if (win->w[plane].yres == 0) + win->w[plane].yres = panel->Yres; + + fbi = framebuffer_alloc(sizeof(struct au1200fb_device), + &dev->dev); + if (!fbi) { + ret = -ENOMEM; + goto failed; + } + + _au1200fb_infos[plane] = fbi; + fbdev = fbi->par; + fbdev->fb_info = fbi; + fbdev->pd = pd; + fbdev->dev = &dev->dev; + + fbdev->plane = plane; + + /* Allocate the framebuffer to the maximum screen size */ + fbdev->fb_len = (win->w[plane].xres * win->w[plane].yres * bpp) / 8; + + fbdev->fb_mem = dmam_alloc_attrs(&dev->dev, + PAGE_ALIGN(fbdev->fb_len), + &fbdev->fb_phys, GFP_KERNEL, 0); + if (!fbdev->fb_mem) { + print_err("fail to allocate framebuffer (size: %dK))", + fbdev->fb_len / 1024); + ret = -ENOMEM; + goto failed; + } + + print_dbg("Framebuffer memory map at %p", fbdev->fb_mem); + print_dbg("phys=0x%08x, size=%dK", fbdev->fb_phys, fbdev->fb_len / 1024); + + /* Init FB data */ + ret = au1200fb_init_fbinfo(fbdev); + if (ret < 0) + goto failed; + + /* Register new framebuffer */ + ret = register_framebuffer(fbi); + if (ret < 0) { + print_err("cannot register new framebuffer"); + goto failed; + } + + au1200fb_fb_set_par(fbi); + +#if !defined(CONFIG_FRAMEBUFFER_CONSOLE) && defined(CONFIG_LOGO) + if (plane == 0) + if (fb_prepare_logo(fbi, FB_ROTATE_UR)) { + /* Start display and show logo on boot */ + fb_set_cmap(&fbi->cmap, fbi); + fb_show_logo(fbi, FB_ROTATE_UR); + } +#endif + } + + /* Now hook interrupt too */ + irq = platform_get_irq(dev, 0); + if (irq < 0) + return irq; + + ret = request_irq(irq, au1200fb_handle_irq, + IRQF_SHARED, "lcd", (void *)dev); + if (ret) { + print_err("fail to request interrupt line %d (err: %d)", + irq, ret); + goto failed; + } + + platform_set_drvdata(dev, pd); + + /* Kickstart the panel */ + au1200_setpanel(panel, pd); + + return 0; + +failed: + for (plane = 0; plane < device_count; ++plane) { + fbi = _au1200fb_infos[plane]; + if (!fbi) + break; + + /* Clean up all probe data */ + unregister_framebuffer(fbi); + if (fbi->cmap.len != 0) + fb_dealloc_cmap(&fbi->cmap); + kfree(fbi->pseudo_palette); + + framebuffer_release(fbi); + _au1200fb_infos[plane] = NULL; + } + return ret; +} + +static int au1200fb_drv_remove(struct platform_device *dev) +{ + struct au1200fb_platdata *pd = platform_get_drvdata(dev); + struct fb_info *fbi; + int plane; + + /* Turn off the panel */ + au1200_setpanel(NULL, pd); + + for (plane = 0; plane < device_count; ++plane) { + fbi = _au1200fb_infos[plane]; + + /* Clean up all probe data */ + unregister_framebuffer(fbi); + if (fbi->cmap.len != 0) + fb_dealloc_cmap(&fbi->cmap); + kfree(fbi->pseudo_palette); + + framebuffer_release(fbi); + _au1200fb_infos[plane] = NULL; + } + + free_irq(platform_get_irq(dev, 0), (void *)dev); + + return 0; +} + +#ifdef CONFIG_PM +static int au1200fb_drv_suspend(struct device *dev) +{ + struct au1200fb_platdata *pd = dev_get_drvdata(dev); + au1200_setpanel(NULL, pd); + + lcd->outmask = 0; + wmb(); /* drain writebuffer */ + + return 0; +} + +static int au1200fb_drv_resume(struct device *dev) +{ + struct au1200fb_platdata *pd = dev_get_drvdata(dev); + struct fb_info *fbi; + int i; + + /* Kickstart the panel */ + au1200_setpanel(panel, pd); + + for (i = 0; i < device_count; i++) { + fbi = _au1200fb_infos[i]; + au1200fb_fb_set_par(fbi); + } + + return 0; +} + +static const struct dev_pm_ops au1200fb_pmops = { + .suspend = au1200fb_drv_suspend, + .resume = au1200fb_drv_resume, + .freeze = au1200fb_drv_suspend, + .thaw = au1200fb_drv_resume, +}; + +#define AU1200FB_PMOPS (&au1200fb_pmops) + +#else +#define AU1200FB_PMOPS NULL +#endif /* CONFIG_PM */ + +static struct platform_driver au1200fb_driver = { + .driver = { + .name = "au1200-lcd", + .pm = AU1200FB_PMOPS, + }, + .probe = au1200fb_drv_probe, + .remove = au1200fb_drv_remove, +}; +module_platform_driver(au1200fb_driver); + +MODULE_DESCRIPTION(DRIVER_DESC); +MODULE_LICENSE("GPL"); |