diff options
Diffstat (limited to 'drivers/video/s1d13xxxfb.c')
| -rw-r--r-- | drivers/video/s1d13xxxfb.c | 1040 |
1 files changed, 0 insertions, 1040 deletions
diff --git a/drivers/video/s1d13xxxfb.c b/drivers/video/s1d13xxxfb.c deleted file mode 100644 index 83433cb0dfba..000000000000 --- a/drivers/video/s1d13xxxfb.c +++ /dev/null @@ -1,1040 +0,0 @@ -/* drivers/video/s1d13xxxfb.c - * - * (c) 2004 Simtec Electronics - * (c) 2005 Thibaut VARENE <varenet@parisc-linux.org> - * (c) 2009 Kristoffer Ericson <kristoffer.ericson@gmail.com> - * - * Driver for Epson S1D13xxx series framebuffer chips - * - * Adapted from - * linux/drivers/video/skeletonfb.c - * linux/drivers/video/epson1355fb.c - * linux/drivers/video/epson/s1d13xxxfb.c (2.4 driver by Epson) - * - * TODO: - handle dual screen display (CRT and LCD at the same time). - * - check_var(), mode change, etc. - * - probably not SMP safe :) - * - support all bitblt operations on all cards - * - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file COPYING in the main directory of this archive for - * more details. - */ - -#include <linux/module.h> -#include <linux/platform_device.h> -#include <linux/delay.h> -#include <linux/types.h> -#include <linux/errno.h> -#include <linux/mm.h> -#include <linux/mman.h> -#include <linux/fb.h> -#include <linux/spinlock_types.h> -#include <linux/spinlock.h> -#include <linux/slab.h> - -#include <asm/io.h> - -#include <video/s1d13xxxfb.h> - -#define PFX "s1d13xxxfb: " -#define BLIT "s1d13xxxfb_bitblt: " - -/* - * set this to enable debugging on general functions - */ -#if 0 -#define dbg(fmt, args...) do { printk(KERN_INFO fmt, ## args); } while(0) -#else -#define dbg(fmt, args...) do { } while (0) -#endif - -/* - * set this to enable debugging on 2D acceleration - */ -#if 0 -#define dbg_blit(fmt, args...) do { printk(KERN_INFO BLIT fmt, ## args); } while (0) -#else -#define dbg_blit(fmt, args...) do { } while (0) -#endif - -/* - * we make sure only one bitblt operation is running - */ -static DEFINE_SPINLOCK(s1d13xxxfb_bitblt_lock); - -/* - * list of card production ids - */ -static const int s1d13xxxfb_prod_ids[] = { - S1D13505_PROD_ID, - S1D13506_PROD_ID, - S1D13806_PROD_ID, -}; - -/* - * List of card strings - */ -static const char *s1d13xxxfb_prod_names[] = { - "S1D13505", - "S1D13506", - "S1D13806", -}; - -/* - * here we define the default struct fb_fix_screeninfo - */ -static struct fb_fix_screeninfo s1d13xxxfb_fix = { - .id = S1D_FBID, - .type = FB_TYPE_PACKED_PIXELS, - .visual = FB_VISUAL_PSEUDOCOLOR, - .xpanstep = 0, - .ypanstep = 1, - .ywrapstep = 0, - .accel = FB_ACCEL_NONE, -}; - -static inline u8 -s1d13xxxfb_readreg(struct s1d13xxxfb_par *par, u16 regno) -{ -#if defined(CONFIG_PLAT_M32700UT) || defined(CONFIG_PLAT_OPSPUT) || defined(CONFIG_PLAT_MAPPI3) - regno=((regno & 1) ? (regno & ~1L) : (regno + 1)); -#endif - return readb(par->regs + regno); -} - -static inline void -s1d13xxxfb_writereg(struct s1d13xxxfb_par *par, u16 regno, u8 value) -{ -#if defined(CONFIG_PLAT_M32700UT) || defined(CONFIG_PLAT_OPSPUT) || defined(CONFIG_PLAT_MAPPI3) - regno=((regno & 1) ? (regno & ~1L) : (regno + 1)); -#endif - writeb(value, par->regs + regno); -} - -static inline void -s1d13xxxfb_runinit(struct s1d13xxxfb_par *par, - const struct s1d13xxxfb_regval *initregs, - const unsigned int size) -{ - int i; - - for (i = 0; i < size; i++) { - if ((initregs[i].addr == S1DREG_DELAYOFF) || - (initregs[i].addr == S1DREG_DELAYON)) - mdelay((int)initregs[i].value); - else { - s1d13xxxfb_writereg(par, initregs[i].addr, initregs[i].value); - } - } - - /* make sure the hardware can cope with us */ - mdelay(1); -} - -static inline void -lcd_enable(struct s1d13xxxfb_par *par, int enable) -{ - u8 mode = s1d13xxxfb_readreg(par, S1DREG_COM_DISP_MODE); - - if (enable) - mode |= 0x01; - else - mode &= ~0x01; - - s1d13xxxfb_writereg(par, S1DREG_COM_DISP_MODE, mode); -} - -static inline void -crt_enable(struct s1d13xxxfb_par *par, int enable) -{ - u8 mode = s1d13xxxfb_readreg(par, S1DREG_COM_DISP_MODE); - - if (enable) - mode |= 0x02; - else - mode &= ~0x02; - - s1d13xxxfb_writereg(par, S1DREG_COM_DISP_MODE, mode); -} - - -/************************************************************* - framebuffer control functions - *************************************************************/ -static inline void -s1d13xxxfb_setup_pseudocolour(struct fb_info *info) -{ - info->fix.visual = FB_VISUAL_PSEUDOCOLOR; - - info->var.red.length = 4; - info->var.green.length = 4; - info->var.blue.length = 4; -} - -static inline void -s1d13xxxfb_setup_truecolour(struct fb_info *info) -{ - info->fix.visual = FB_VISUAL_TRUECOLOR; - info->var.bits_per_pixel = 16; - - info->var.red.length = 5; - info->var.red.offset = 11; - - info->var.green.length = 6; - info->var.green.offset = 5; - - info->var.blue.length = 5; - info->var.blue.offset = 0; -} - -/** - * s1d13xxxfb_set_par - Alters the hardware state. - * @info: frame buffer structure - * - * Using the fb_var_screeninfo in fb_info we set the depth of the - * framebuffer. This function alters the par AND the - * fb_fix_screeninfo stored in fb_info. It doesn't not alter var in - * fb_info since we are using that data. This means we depend on the - * data in var inside fb_info to be supported by the hardware. - * xxxfb_check_var is always called before xxxfb_set_par to ensure this. - * - * XXX TODO: write proper s1d13xxxfb_check_var(), without which that - * function is quite useless. - */ -static int -s1d13xxxfb_set_par(struct fb_info *info) -{ - struct s1d13xxxfb_par *s1dfb = info->par; - unsigned int val; - - dbg("s1d13xxxfb_set_par: bpp=%d\n", info->var.bits_per_pixel); - - if ((s1dfb->display & 0x01)) /* LCD */ - val = s1d13xxxfb_readreg(s1dfb, S1DREG_LCD_DISP_MODE); /* read colour control */ - else /* CRT */ - val = s1d13xxxfb_readreg(s1dfb, S1DREG_CRT_DISP_MODE); /* read colour control */ - - val &= ~0x07; - - switch (info->var.bits_per_pixel) { - case 4: - dbg("pseudo colour 4\n"); - s1d13xxxfb_setup_pseudocolour(info); - val |= 2; - break; - case 8: - dbg("pseudo colour 8\n"); - s1d13xxxfb_setup_pseudocolour(info); - val |= 3; - break; - case 16: - dbg("true colour\n"); - s1d13xxxfb_setup_truecolour(info); - val |= 5; - break; - - default: - dbg("bpp not supported!\n"); - return -EINVAL; - } - - dbg("writing %02x to display mode register\n", val); - - if ((s1dfb->display & 0x01)) /* LCD */ - s1d13xxxfb_writereg(s1dfb, S1DREG_LCD_DISP_MODE, val); - else /* CRT */ - s1d13xxxfb_writereg(s1dfb, S1DREG_CRT_DISP_MODE, val); - - info->fix.line_length = info->var.xres * info->var.bits_per_pixel; - info->fix.line_length /= 8; - - dbg("setting line_length to %d\n", info->fix.line_length); - - dbg("done setup\n"); - - return 0; -} - -/** - * s1d13xxxfb_setcolreg - sets a color register. - * @regno: Which register in the CLUT we are programming - * @red: The red value which can be up to 16 bits wide - * @green: The green value which can be up to 16 bits wide - * @blue: The blue value which can be up to 16 bits wide. - * @transp: If supported the alpha value which can be up to 16 bits wide. - * @info: frame buffer info structure - * - * Returns negative errno on error, or zero on success. - */ -static int -s1d13xxxfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue, - u_int transp, struct fb_info *info) -{ - struct s1d13xxxfb_par *s1dfb = info->par; - unsigned int pseudo_val; - - if (regno >= S1D_PALETTE_SIZE) - return -EINVAL; - - dbg("s1d13xxxfb_setcolreg: %d: rgb=%d,%d,%d, tr=%d\n", - regno, red, green, blue, transp); - - if (info->var.grayscale) - red = green = blue = (19595*red + 38470*green + 7471*blue) >> 16; - - switch (info->fix.visual) { - case FB_VISUAL_TRUECOLOR: - if (regno >= 16) - return -EINVAL; - - /* deal with creating pseudo-palette entries */ - - pseudo_val = (red >> 11) << info->var.red.offset; - pseudo_val |= (green >> 10) << info->var.green.offset; - pseudo_val |= (blue >> 11) << info->var.blue.offset; - - dbg("s1d13xxxfb_setcolreg: pseudo %d, val %08x\n", - regno, pseudo_val); - -#if defined(CONFIG_PLAT_MAPPI) - ((u32 *)info->pseudo_palette)[regno] = cpu_to_le16(pseudo_val); -#else - ((u32 *)info->pseudo_palette)[regno] = pseudo_val; -#endif - - break; - case FB_VISUAL_PSEUDOCOLOR: - s1d13xxxfb_writereg(s1dfb, S1DREG_LKUP_ADDR, regno); - s1d13xxxfb_writereg(s1dfb, S1DREG_LKUP_DATA, red); - s1d13xxxfb_writereg(s1dfb, S1DREG_LKUP_DATA, green); - s1d13xxxfb_writereg(s1dfb, S1DREG_LKUP_DATA, blue); - - break; - default: - return -ENOSYS; - } - - dbg("s1d13xxxfb_setcolreg: done\n"); - - return 0; -} - -/** - * s1d13xxxfb_blank - blanks the display. - * @blank_mode: the blank mode we want. - * @info: frame buffer structure that represents a single frame buffer - * - * Blank the screen if blank_mode != 0, else unblank. Return 0 if - * blanking succeeded, != 0 if un-/blanking failed due to e.g. a - * video mode which doesn't support it. Implements VESA suspend - * and powerdown modes on hardware that supports disabling hsync/vsync: - * blank_mode == 2: suspend vsync - * blank_mode == 3: suspend hsync - * blank_mode == 4: powerdown - * - * Returns negative errno on error, or zero on success. - */ -static int -s1d13xxxfb_blank(int blank_mode, struct fb_info *info) -{ - struct s1d13xxxfb_par *par = info->par; - - dbg("s1d13xxxfb_blank: blank=%d, info=%p\n", blank_mode, info); - - switch (blank_mode) { - case FB_BLANK_UNBLANK: - case FB_BLANK_NORMAL: - if ((par->display & 0x01) != 0) - lcd_enable(par, 1); - if ((par->display & 0x02) != 0) - crt_enable(par, 1); - break; - case FB_BLANK_VSYNC_SUSPEND: - case FB_BLANK_HSYNC_SUSPEND: - break; - case FB_BLANK_POWERDOWN: - lcd_enable(par, 0); - crt_enable(par, 0); - break; - default: - return -EINVAL; - } - - /* let fbcon do a soft blank for us */ - return ((blank_mode == FB_BLANK_NORMAL) ? 1 : 0); -} - -/** - * s1d13xxxfb_pan_display - Pans the display. - * @var: frame buffer variable screen structure - * @info: frame buffer structure that represents a single frame buffer - * - * Pan (or wrap, depending on the `vmode' field) the display using the - * `yoffset' field of the `var' structure (`xoffset' not yet supported). - * If the values don't fit, return -EINVAL. - * - * Returns negative errno on error, or zero on success. - */ -static int -s1d13xxxfb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info) -{ - struct s1d13xxxfb_par *par = info->par; - u32 start; - - if (var->xoffset != 0) /* not yet ... */ - return -EINVAL; - - if (var->yoffset + info->var.yres > info->var.yres_virtual) - return -EINVAL; - - start = (info->fix.line_length >> 1) * var->yoffset; - - if ((par->display & 0x01)) { - /* LCD */ - s1d13xxxfb_writereg(par, S1DREG_LCD_DISP_START0, (start & 0xff)); - s1d13xxxfb_writereg(par, S1DREG_LCD_DISP_START1, ((start >> 8) & 0xff)); - s1d13xxxfb_writereg(par, S1DREG_LCD_DISP_START2, ((start >> 16) & 0x0f)); - } else { - /* CRT */ - s1d13xxxfb_writereg(par, S1DREG_CRT_DISP_START0, (start & 0xff)); - s1d13xxxfb_writereg(par, S1DREG_CRT_DISP_START1, ((start >> 8) & 0xff)); - s1d13xxxfb_writereg(par, S1DREG_CRT_DISP_START2, ((start >> 16) & 0x0f)); - } - - return 0; -} - -/************************************************************ - functions to handle bitblt acceleration - ************************************************************/ - -/** - * bltbit_wait_bitclear - waits for change in register value - * @info : frambuffer structure - * @bit : value currently in register - * @timeout : ... - * - * waits until value changes FROM bit - * - */ -static u8 -bltbit_wait_bitclear(struct fb_info *info, u8 bit, int timeout) -{ - while (s1d13xxxfb_readreg(info->par, S1DREG_BBLT_CTL0) & bit) { - udelay(10); - if (!--timeout) { - dbg_blit("wait_bitclear timeout\n"); - break; - } - } - - return timeout; -} - -/* - * s1d13xxxfb_bitblt_copyarea - accelerated copyarea function - * @info : framebuffer structure - * @area : fb_copyarea structure - * - * supports (atleast) S1D13506 - * - */ -static void -s1d13xxxfb_bitblt_copyarea(struct fb_info *info, const struct fb_copyarea *area) -{ - u32 dst, src; - u32 stride; - u16 reverse = 0; - u16 sx = area->sx, sy = area->sy; - u16 dx = area->dx, dy = area->dy; - u16 width = area->width, height = area->height; - u16 bpp; - - spin_lock(&s1d13xxxfb_bitblt_lock); - - /* bytes per xres line */ - bpp = (info->var.bits_per_pixel >> 3); - stride = bpp * info->var.xres; - - /* reverse, calculate the last pixel in rectangle */ - if ((dy > sy) || ((dy == sy) && (dx >= sx))) { - dst = (((dy + height - 1) * stride) + (bpp * (dx + width - 1))); - src = (((sy + height - 1) * stride) + (bpp * (sx + width - 1))); - reverse = 1; - /* not reverse, calculate the first pixel in rectangle */ - } else { /* (y * xres) + (bpp * x) */ - dst = (dy * stride) + (bpp * dx); - src = (sy * stride) + (bpp * sx); - } - - /* set source address */ - s1d13xxxfb_writereg(info->par, S1DREG_BBLT_SRC_START0, (src & 0xff)); - s1d13xxxfb_writereg(info->par, S1DREG_BBLT_SRC_START1, (src >> 8) & 0x00ff); - s1d13xxxfb_writereg(info->par, S1DREG_BBLT_SRC_START2, (src >> 16) & 0x00ff); - - /* set destination address */ - s1d13xxxfb_writereg(info->par, S1DREG_BBLT_DST_START0, (dst & 0xff)); - s1d13xxxfb_writereg(info->par, S1DREG_BBLT_DST_START1, (dst >> 8) & 0x00ff); - s1d13xxxfb_writereg(info->par, S1DREG_BBLT_DST_START2, (dst >> 16) & 0x00ff); - - /* program height and width */ - s1d13xxxfb_writereg(info->par, S1DREG_BBLT_WIDTH0, (width & 0xff) - 1); - s1d13xxxfb_writereg(info->par, S1DREG_BBLT_WIDTH1, (width >> 8)); - - s1d13xxxfb_writereg(info->par, S1DREG_BBLT_HEIGHT0, (height & 0xff) - 1); - s1d13xxxfb_writereg(info->par, S1DREG_BBLT_HEIGHT1, (height >> 8)); - - /* negative direction ROP */ - if (reverse == 1) { - dbg_blit("(copyarea) negative rop\n"); - s1d13xxxfb_writereg(info->par, S1DREG_BBLT_OP, 0x03); - } else /* positive direction ROP */ { - s1d13xxxfb_writereg(info->par, S1DREG_BBLT_OP, 0x02); - dbg_blit("(copyarea) positive rop\n"); - } - - /* set for rectangel mode and not linear */ - s1d13xxxfb_writereg(info->par, S1DREG_BBLT_CTL0, 0x0); - - /* setup the bpp 1 = 16bpp, 0 = 8bpp*/ - s1d13xxxfb_writereg(info->par, S1DREG_BBLT_CTL1, (bpp >> 1)); - - /* set words per xres */ - s1d13xxxfb_writereg(info->par, S1DREG_BBLT_MEM_OFF0, (stride >> 1) & 0xff); - s1d13xxxfb_writereg(info->par, S1DREG_BBLT_MEM_OFF1, (stride >> 9)); - - dbg_blit("(copyarea) dx=%d, dy=%d\n", dx, dy); - dbg_blit("(copyarea) sx=%d, sy=%d\n", sx, sy); - dbg_blit("(copyarea) width=%d, height=%d\n", width - 1, height - 1); - dbg_blit("(copyarea) stride=%d\n", stride); - dbg_blit("(copyarea) bpp=%d=0x0%d, mem_offset1=%d, mem_offset2=%d\n", bpp, (bpp >> 1), - (stride >> 1) & 0xff, stride >> 9); - - s1d13xxxfb_writereg(info->par, S1DREG_BBLT_CC_EXP, 0x0c); - - /* initialize the engine */ - s1d13xxxfb_writereg(info->par, S1DREG_BBLT_CTL0, 0x80); - - /* wait to complete */ - bltbit_wait_bitclear(info, 0x80, 8000); - - spin_unlock(&s1d13xxxfb_bitblt_lock); -} - -/** - * - * s1d13xxxfb_bitblt_solidfill - accelerated solidfill function - * @info : framebuffer structure - * @rect : fb_fillrect structure - * - * supports (atleast 13506) - * - **/ -static void -s1d13xxxfb_bitblt_solidfill(struct fb_info *info, const struct fb_fillrect *rect) -{ - u32 screen_stride, dest; - u32 fg; - u16 bpp = (info->var.bits_per_pixel >> 3); - - /* grab spinlock */ - spin_lock(&s1d13xxxfb_bitblt_lock); - - /* bytes per x width */ - screen_stride = (bpp * info->var.xres); - - /* bytes to starting point */ - dest = ((rect->dy * screen_stride) + (bpp * rect->dx)); - - dbg_blit("(solidfill) dx=%d, dy=%d, stride=%d, dest=%d\n" - "(solidfill) : rect_width=%d, rect_height=%d\n", - rect->dx, rect->dy, screen_stride, dest, - rect->width - 1, rect->height - 1); - - dbg_blit("(solidfill) : xres=%d, yres=%d, bpp=%d\n", - info->var.xres, info->var.yres, - info->var.bits_per_pixel); - dbg_blit("(solidfill) : rop=%d\n", rect->rop); - - /* We split the destination into the three registers */ - s1d13xxxfb_writereg(info->par, S1DREG_BBLT_DST_START0, (dest & 0x00ff)); - s1d13xxxfb_writereg(info->par, S1DREG_BBLT_DST_START1, ((dest >> 8) & 0x00ff)); - s1d13xxxfb_writereg(info->par, S1DREG_BBLT_DST_START2, ((dest >> 16) & 0x00ff)); - - /* give information regarding rectangel width */ - s1d13xxxfb_writereg(info->par, S1DREG_BBLT_WIDTH0, ((rect->width) & 0x00ff) - 1); - s1d13xxxfb_writereg(info->par, S1DREG_BBLT_WIDTH1, (rect->width >> 8)); - - /* give information regarding rectangel height */ - s1d13xxxfb_writereg(info->par, S1DREG_BBLT_HEIGHT0, ((rect->height) & 0x00ff) - 1); - s1d13xxxfb_writereg(info->par, S1DREG_BBLT_HEIGHT1, (rect->height >> 8)); - - if (info->fix.visual == FB_VISUAL_TRUECOLOR || - info->fix.visual == FB_VISUAL_DIRECTCOLOR) { - fg = ((u32 *)info->pseudo_palette)[rect->color]; - dbg_blit("(solidfill) truecolor/directcolor\n"); - dbg_blit("(solidfill) pseudo_palette[%d] = %d\n", rect->color, fg); - } else { - fg = rect->color; - dbg_blit("(solidfill) color = %d\n", rect->color); - } - - /* set foreground color */ - s1d13xxxfb_writereg(info->par, S1DREG_BBLT_FGC0, (fg & 0xff)); - s1d13xxxfb_writereg(info->par, S1DREG_BBLT_FGC1, (fg >> 8) & 0xff); - - /* set rectangual region of memory (rectangle and not linear) */ - s1d13xxxfb_writereg(info->par, S1DREG_BBLT_CTL0, 0x0); - - /* set operation mode SOLID_FILL */ - s1d13xxxfb_writereg(info->par, S1DREG_BBLT_OP, BBLT_SOLID_FILL); - - /* set bits per pixel (1 = 16bpp, 0 = 8bpp) */ - s1d13xxxfb_writereg(info->par, S1DREG_BBLT_CTL1, (info->var.bits_per_pixel >> 4)); - - /* set the memory offset for the bblt in word sizes */ - s1d13xxxfb_writereg(info->par, S1DREG_BBLT_MEM_OFF0, (screen_stride >> 1) & 0x00ff); - s1d13xxxfb_writereg(info->par, S1DREG_BBLT_MEM_OFF1, (screen_stride >> 9)); - - /* and away we go.... */ - s1d13xxxfb_writereg(info->par, S1DREG_BBLT_CTL0, 0x80); - - /* wait until its done */ - bltbit_wait_bitclear(info, 0x80, 8000); - - /* let others play */ - spin_unlock(&s1d13xxxfb_bitblt_lock); -} - -/* framebuffer information structures */ -static struct fb_ops s1d13xxxfb_fbops = { - .owner = THIS_MODULE, - .fb_set_par = s1d13xxxfb_set_par, - .fb_setcolreg = s1d13xxxfb_setcolreg, - .fb_blank = s1d13xxxfb_blank, - - .fb_pan_display = s1d13xxxfb_pan_display, - - /* gets replaced at chip detection time */ - .fb_fillrect = cfb_fillrect, - .fb_copyarea = cfb_copyarea, - .fb_imageblit = cfb_imageblit, -}; - -static int s1d13xxxfb_width_tab[2][4] = { - {4, 8, 16, -1}, - {9, 12, 18, -1}, -}; - -/** - * s1d13xxxfb_fetch_hw_state - Configure the framebuffer according to - * hardware setup. - * @info: frame buffer structure - * - * We setup the framebuffer structures according to the current - * hardware setup. On some machines, the BIOS will have filled - * the chip registers with such info, on others, these values will - * have been written in some init procedure. In any case, the - * software values needs to match the hardware ones. This is what - * this function ensures. - * - * Note: some of the hardcoded values here might need some love to - * work on various chips, and might need to no longer be hardcoded. - */ -static void s1d13xxxfb_fetch_hw_state(struct fb_info *info) -{ - struct fb_var_screeninfo *var = &info->var; - struct fb_fix_screeninfo *fix = &info->fix; - struct s1d13xxxfb_par *par = info->par; - u8 panel, display; - u16 offset; - u32 xres, yres; - u32 xres_virtual, yres_virtual; - int bpp, lcd_bpp; - int is_color, is_dual, is_tft; - int lcd_enabled, crt_enabled; - - fix->type = FB_TYPE_PACKED_PIXELS; - - /* general info */ - par->display = s1d13xxxfb_readreg(par, S1DREG_COM_DISP_MODE); - crt_enabled = (par->display & 0x02) != 0; - lcd_enabled = (par->display & 0x01) != 0; - - if (lcd_enabled && crt_enabled) - printk(KERN_WARNING PFX "Warning: LCD and CRT detected, using LCD\n"); - - if (lcd_enabled) - display = s1d13xxxfb_readreg(par, S1DREG_LCD_DISP_MODE); - else /* CRT */ - display = s1d13xxxfb_readreg(par, S1DREG_CRT_DISP_MODE); - - bpp = display & 0x07; - - switch (bpp) { - case 2: /* 4 bpp */ - case 3: /* 8 bpp */ - var->bits_per_pixel = 8; - var->red.offset = var->green.offset = var->blue.offset = 0; - var->red.length = var->green.length = var->blue.length = 8; - break; - case 5: /* 16 bpp */ - s1d13xxxfb_setup_truecolour(info); - break; - default: - dbg("bpp: %i\n", bpp); - } - fb_alloc_cmap(&info->cmap, 256, 0); - - /* LCD info */ - panel = s1d13xxxfb_readreg(par, S1DREG_PANEL_TYPE); - is_color = (panel & 0x04) != 0; - is_dual = (panel & 0x02) != 0; - is_tft = (panel & 0x01) != 0; - lcd_bpp = s1d13xxxfb_width_tab[is_tft][(panel >> 4) & 3]; - - if (lcd_enabled) { - xres = (s1d13xxxfb_readreg(par, S1DREG_LCD_DISP_HWIDTH) + 1) * 8; - yres = (s1d13xxxfb_readreg(par, S1DREG_LCD_DISP_VHEIGHT0) + - ((s1d13xxxfb_readreg(par, S1DREG_LCD_DISP_VHEIGHT1) & 0x03) << 8) + 1); - - offset = (s1d13xxxfb_readreg(par, S1DREG_LCD_MEM_OFF0) + - ((s1d13xxxfb_readreg(par, S1DREG_LCD_MEM_OFF1) & 0x7) << 8)); - } else { /* crt */ - xres = (s1d13xxxfb_readreg(par, S1DREG_CRT_DISP_HWIDTH) + 1) * 8; - yres = (s1d13xxxfb_readreg(par, S1DREG_CRT_DISP_VHEIGHT0) + - ((s1d13xxxfb_readreg(par, S1DREG_CRT_DISP_VHEIGHT1) & 0x03) << 8) + 1); - - offset = (s1d13xxxfb_readreg(par, S1DREG_CRT_MEM_OFF0) + - ((s1d13xxxfb_readreg(par, S1DREG_CRT_MEM_OFF1) & 0x7) << 8)); - } - xres_virtual = offset * 16 / var->bits_per_pixel; - yres_virtual = fix->smem_len / (offset * 2); - - var->xres = xres; - var->yres = yres; - var->xres_virtual = xres_virtual; - var->yres_virtual = yres_virtual; - var->xoffset = var->yoffset = 0; - - fix->line_length = offset * 2; - - var->grayscale = !is_color; - - var->activate = FB_ACTIVATE_NOW; - - dbg(PFX "bpp=%d, lcd_bpp=%d, " - "crt_enabled=%d, lcd_enabled=%d\n", - var->bits_per_pixel, lcd_bpp, crt_enabled, lcd_enabled); - dbg(PFX "xres=%d, yres=%d, vxres=%d, vyres=%d " - "is_color=%d, is_dual=%d, is_tft=%d\n", - xres, yres, xres_virtual, yres_virtual, is_color, is_dual, is_tft); -} - - -static int -s1d13xxxfb_remove(struct platform_device *pdev) -{ - struct fb_info *info = platform_get_drvdata(pdev); - struct s1d13xxxfb_par *par = NULL; - - if (info) { - par = info->par; - if (par && par->regs) { - /* disable output & enable powersave */ - s1d13xxxfb_writereg(par, S1DREG_COM_DISP_MODE, 0x00); - s1d13xxxfb_writereg(par, S1DREG_PS_CNF, 0x11); - iounmap(par->regs); - } - - fb_dealloc_cmap(&info->cmap); - - if (info->screen_base) - iounmap(info->screen_base); - - framebuffer_release(info); - } - - release_mem_region(pdev->resource[0].start, - pdev->resource[0].end - pdev->resource[0].start +1); - release_mem_region(pdev->resource[1].start, - pdev->resource[1].end - pdev->resource[1].start +1); - return 0; -} - -static int s1d13xxxfb_probe(struct platform_device *pdev) -{ - struct s1d13xxxfb_par *default_par; - struct fb_info *info; - struct s1d13xxxfb_pdata *pdata = NULL; - int ret = 0; - int i; - u8 revision, prod_id; - - dbg("probe called: device is %p\n", pdev); - - printk(KERN_INFO "Epson S1D13XXX FB Driver\n"); - - /* enable platform-dependent hardware glue, if any */ - if (dev_get_platdata(&pdev->dev)) - pdata = dev_get_platdata(&pdev->dev); - - if (pdata && pdata->platform_init_video) - pdata->platform_init_video(); - - if (pdev->num_resources != 2) { - dev_err(&pdev->dev, "invalid num_resources: %i\n", - pdev->num_resources); - ret = -ENODEV; - goto bail; - } - - /* resource[0] is VRAM, resource[1] is registers */ - if (pdev->resource[0].flags != IORESOURCE_MEM - || pdev->resource[1].flags != IORESOURCE_MEM) { - dev_err(&pdev->dev, "invalid resource type\n"); - ret = -ENODEV; - goto bail; - } - - if (!request_mem_region(pdev->resource[0].start, - pdev->resource[0].end - pdev->resource[0].start +1, "s1d13xxxfb mem")) { - dev_dbg(&pdev->dev, "request_mem_region failed\n"); - ret = -EBUSY; - goto bail; - } - - if (!request_mem_region(pdev->resource[1].start, - pdev->resource[1].end - pdev->resource[1].start +1, "s1d13xxxfb regs")) { - dev_dbg(&pdev->dev, "request_mem_region failed\n"); - ret = -EBUSY; - goto bail; - } - - info = framebuffer_alloc(sizeof(struct s1d13xxxfb_par) + sizeof(u32) * 256, &pdev->dev); - if (!info) { - ret = -ENOMEM; - goto bail; - } - - platform_set_drvdata(pdev, info); - default_par = info->par; - default_par->regs = ioremap_nocache(pdev->resource[1].start, - pdev->resource[1].end - pdev->resource[1].start +1); - if (!default_par->regs) { - printk(KERN_ERR PFX "unable to map registers\n"); - ret = -ENOMEM; - goto bail; - } - info->pseudo_palette = default_par->pseudo_palette; - - info->screen_base = ioremap_nocache(pdev->resource[0].start, - pdev->resource[0].end - pdev->resource[0].start +1); - - if (!info->screen_base) { - printk(KERN_ERR PFX "unable to map framebuffer\n"); - ret = -ENOMEM; - goto bail; - } - - /* production id is top 6 bits */ - prod_id = s1d13xxxfb_readreg(default_par, S1DREG_REV_CODE) >> 2; - /* revision id is lower 2 bits */ - revision = s1d13xxxfb_readreg(default_par, S1DREG_REV_CODE) & 0x3; - ret = -ENODEV; - - for (i = 0; i < ARRAY_SIZE(s1d13xxxfb_prod_ids); i++) { - if (prod_id == s1d13xxxfb_prod_ids[i]) { - /* looks like we got it in our list */ - default_par->prod_id = prod_id; - default_par->revision = revision; - ret = 0; - break; - } - } - - if (!ret) { - printk(KERN_INFO PFX "chip production id %i = %s\n", - prod_id, s1d13xxxfb_prod_names[i]); - printk(KERN_INFO PFX "chip revision %i\n", revision); - } else { - printk(KERN_INFO PFX - "unknown chip production id %i, revision %i\n", - prod_id, revision); - printk(KERN_INFO PFX "please contact maintainer\n"); - goto bail; - } - - info->fix = s1d13xxxfb_fix; - info->fix.mmio_start = pdev->resource[1].start; - info->fix.mmio_len = pdev->resource[1].end - pdev->resource[1].start + 1; - info->fix.smem_start = pdev->resource[0].start; - info->fix.smem_len = pdev->resource[0].end - pdev->resource[0].start + 1; - - printk(KERN_INFO PFX "regs mapped at 0x%p, fb %d KiB mapped at 0x%p\n", - default_par->regs, info->fix.smem_len / 1024, info->screen_base); - - info->par = default_par; - info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN; - info->fbops = &s1d13xxxfb_fbops; - - switch(prod_id) { - case S1D13506_PROD_ID: /* activate acceleration */ - s1d13xxxfb_fbops.fb_fillrect = s1d13xxxfb_bitblt_solidfill; - s1d13xxxfb_fbops.fb_copyarea = s1d13xxxfb_bitblt_copyarea; - info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN | - FBINFO_HWACCEL_FILLRECT | FBINFO_HWACCEL_COPYAREA; - break; - default: - break; - } - - /* perform "manual" chip initialization, if needed */ - if (pdata && pdata->initregs) - s1d13xxxfb_runinit(info->par, pdata->initregs, pdata->initregssize); - - s1d13xxxfb_fetch_hw_state(info); - - if (register_framebuffer(info) < 0) { - ret = -EINVAL; - goto bail; - } - - fb_info(info, "%s frame buffer device\n", info->fix.id); - - return 0; - -bail: - s1d13xxxfb_remove(pdev); - return ret; - -} - -#ifdef CONFIG_PM -static int s1d13xxxfb_suspend(struct platform_device *dev, pm_message_t state) -{ - struct fb_info *info = platform_get_drvdata(dev); - struct s1d13xxxfb_par *s1dfb = info->par; - struct s1d13xxxfb_pdata *pdata = NULL; - - /* disable display */ - lcd_enable(s1dfb, 0); - crt_enable(s1dfb, 0); - - if (dev_get_platdata(&dev->dev)) - pdata = dev_get_platdata(&dev->dev); - -#if 0 - if (!s1dfb->disp_save) - s1dfb->disp_save = kmalloc(info->fix.smem_len, GFP_KERNEL); - - if (!s1dfb->disp_save) { - printk(KERN_ERR PFX "no memory to save screen"); - return -ENOMEM; - } - - memcpy_fromio(s1dfb->disp_save, info->screen_base, info->fix.smem_len); -#else - s1dfb->disp_save = NULL; -#endif - - if (!s1dfb->regs_save) - s1dfb->regs_save = kmalloc(info->fix.mmio_len, GFP_KERNEL); - - if (!s1dfb->regs_save) { - printk(KERN_ERR PFX "no memory to save registers"); - return -ENOMEM; - } - - /* backup all registers */ - memcpy_fromio(s1dfb->regs_save, s1dfb->regs, info->fix.mmio_len); - - /* now activate power save mode */ - s1d13xxxfb_writereg(s1dfb, S1DREG_PS_CNF, 0x11); - - if (pdata && pdata->platform_suspend_video) - return pdata->platform_suspend_video(); - else - return 0; -} - -static int s1d13xxxfb_resume(struct platform_device *dev) -{ - struct fb_info *info = platform_get_drvdata(dev); - struct s1d13xxxfb_par *s1dfb = info->par; - struct s1d13xxxfb_pdata *pdata = NULL; - - /* awaken the chip */ - s1d13xxxfb_writereg(s1dfb, S1DREG_PS_CNF, 0x10); - - /* do not let go until SDRAM "wakes up" */ - while ((s1d13xxxfb_readreg(s1dfb, S1DREG_PS_STATUS) & 0x01)) - udelay(10); - - if (dev_get_platdata(&dev->dev)) - pdata = dev_get_platdata(&dev->dev); - - if (s1dfb->regs_save) { - /* will write RO regs, *should* get away with it :) */ - memcpy_toio(s1dfb->regs, s1dfb->regs_save, info->fix.mmio_len); - kfree(s1dfb->regs_save); - } - - if (s1dfb->disp_save) { - memcpy_toio(info->screen_base, s1dfb->disp_save, - info->fix.smem_len); - kfree(s1dfb->disp_save); /* XXX kmalloc()'d when? */ - } - - if ((s1dfb->display & 0x01) != 0) - lcd_enable(s1dfb, 1); - if ((s1dfb->display & 0x02) != 0) - crt_enable(s1dfb, 1); - - if (pdata && pdata->platform_resume_video) - return pdata->platform_resume_video(); - else - return 0; -} -#endif /* CONFIG_PM */ - -static struct platform_driver s1d13xxxfb_driver = { - .probe = s1d13xxxfb_probe, - .remove = s1d13xxxfb_remove, -#ifdef CONFIG_PM - .suspend = s1d13xxxfb_suspend, - .resume = s1d13xxxfb_resume, -#endif - .driver = { - .name = S1D_DEVICENAME, - }, -}; - - -static int __init -s1d13xxxfb_init(void) -{ - -#ifndef MODULE - if (fb_get_options("s1d13xxxfb", NULL)) - return -ENODEV; -#endif - - return platform_driver_register(&s1d13xxxfb_driver); -} - - -static void __exit -s1d13xxxfb_exit(void) -{ - platform_driver_unregister(&s1d13xxxfb_driver); -} - -module_init(s1d13xxxfb_init); -module_exit(s1d13xxxfb_exit); - - -MODULE_LICENSE("GPL"); -MODULE_DESCRIPTION("Framebuffer driver for S1D13xxx devices"); -MODULE_AUTHOR("Ben Dooks <ben@simtec.co.uk>, Thibaut VARENE <varenet@parisc-linux.org>"); |
