diff options
-rw-r--r-- | drivers/video/s3c2410fb.c | 357 |
1 files changed, 172 insertions, 185 deletions
diff --git a/drivers/video/s3c2410fb.c b/drivers/video/s3c2410fb.c index 8a4c6470d79..f10310178e3 100644 --- a/drivers/video/s3c2410fb.c +++ b/drivers/video/s3c2410fb.c @@ -31,8 +31,8 @@ * - add pixel clock divisor control * * 2004-11-11: Arnaud Patard <arnaud.patard@rtp-net.org> - * - Removed the use of currcon as it no more exist - * - Added LCD power sysfs interface + * - Removed the use of currcon as it no more exist + * - Added LCD power sysfs interface * * 2004-11-03: Ben Dooks <ben-linux@fluff.org> * - minor cleanups @@ -49,12 +49,12 @@ * - Suppress command line options * * 2004-09-15: Arnaud Patard <arnaud.patard@rtp-net.org> - * - code cleanup + * - code cleanup * * 2004-09-07: Arnaud Patard <arnaud.patard@rtp-net.org> - * - Renamed from h1940fb.c to s3c2410fb.c - * - Add support for different devices - * - Backlight support + * - Renamed from h1940fb.c to s3c2410fb.c + * - Add support for different devices + * - Backlight support * * 2004-09-05: Herbert Pötzl <herbert@13thfloor.at> * - added clock (de-)allocation code @@ -102,14 +102,13 @@ #include "s3c2410fb.h" - static struct s3c2410fb_mach_info *mach_info; /* Debugging stuff */ #ifdef CONFIG_FB_S3C2410_DEBUG -static int debug = 1; +static int debug = 1; #else -static int debug = 0; +static int debug = 0; #endif #define dprintk(msg...) if (debug) { printk(KERN_DEBUG "s3c2410fb: " msg); } @@ -119,19 +118,20 @@ static int debug = 0; /* s3c2410fb_set_lcdaddr * * initialise lcd controller address pointers -*/ - + */ static void s3c2410fb_set_lcdaddr(struct s3c2410fb_info *fbi) { struct fb_var_screeninfo *var = &fbi->fb->var; unsigned long saddr1, saddr2, saddr3; + int line_length = var->xres * var->bits_per_pixel; saddr1 = fbi->fb->fix.smem_start >> 1; saddr2 = fbi->fb->fix.smem_start; - saddr2 += (var->xres * var->yres * var->bits_per_pixel)/8; - saddr2>>= 1; + saddr2 += (line_length * var->yres) / 8; + saddr2 >>= 1; - saddr3 = S3C2410_OFFSIZE(0) | S3C2410_PAGEWIDTH((var->xres * var->bits_per_pixel / 16) & 0x3ff); + saddr3 = S3C2410_OFFSIZE(0) | + S3C2410_PAGEWIDTH((line_length / 16) & 0x3ff); dprintk("LCDSADDR1 = 0x%08lx\n", saddr1); dprintk("LCDSADDR2 = 0x%08lx\n", saddr2); @@ -145,8 +145,7 @@ static void s3c2410fb_set_lcdaddr(struct s3c2410fb_info *fbi) /* s3c2410fb_calc_pixclk() * * calculate divisor for clk->pixclk -*/ - + */ static unsigned int s3c2410fb_calc_pixclk(struct s3c2410fb_info *fbi, unsigned long pixclk) { @@ -159,8 +158,8 @@ static unsigned int s3c2410fb_calc_pixclk(struct s3c2410fb_info *fbi, */ div = (unsigned long long)clk * pixclk; - do_div(div,1000000UL); - do_div(div,1000000UL); + do_div(div, 1000000UL); + do_div(div, 1000000UL); dprintk("pixclk %ld, divisor is %ld\n", pixclk, (long)div); return div; @@ -198,93 +197,84 @@ static int s3c2410fb_check_var(struct fb_var_screeninfo *var, else if (var->bits_per_pixel < fbi->mach_info->bpp.min) var->bits_per_pixel = fbi->mach_info->bpp.min; + var->transp.offset = 0; + var->transp.length = 0; /* set r/g/b positions */ switch (var->bits_per_pixel) { - case 1: - case 2: - case 4: - var->red.offset = 0; - var->red.length = var->bits_per_pixel; - var->green = var->red; - var->blue = var->red; - var->transp.offset = 0; - var->transp.length = 0; - break; - case 8: - if ( fbi->mach_info->type != S3C2410_LCDCON1_TFT ) { - /* 8 bpp 332 */ - var->red.length = 3; - var->red.offset = 5; - var->green.length = 3; - var->green.offset = 2; - var->blue.length = 2; - var->blue.offset = 0; - var->transp.length = 0; - } else { - var->red.offset = 0; - var->red.length = var->bits_per_pixel; - var->green = var->red; - var->blue = var->red; - var->transp.offset = 0; - var->transp.length = 0; - } - break; - case 12: - /* 12 bpp 444 */ - var->red.length = 4; - var->red.offset = 8; - var->green.length = 4; - var->green.offset = 4; - var->blue.length = 4; + case 1: + case 2: + case 4: + var->red.offset = 0; + var->red.length = var->bits_per_pixel; + var->green = var->red; + var->blue = var->red; + break; + case 8: + if (fbi->mach_info->type != S3C2410_LCDCON1_TFT) { + /* 8 bpp 332 */ + var->red.length = 3; + var->red.offset = 5; + var->green.length = 3; + var->green.offset = 2; + var->blue.length = 2; var->blue.offset = 0; - var->transp.length = 0; - break; - - default: - case 16: - if (fbi->regs.lcdcon5 & S3C2410_LCDCON5_FRM565 ) { - /* 16 bpp, 565 format */ - var->red.offset = 11; - var->green.offset = 5; - var->blue.offset = 0; - var->red.length = 5; - var->green.length = 6; - var->blue.length = 5; - var->transp.length = 0; - } else { - /* 16 bpp, 5551 format */ - var->red.offset = 11; - var->green.offset = 6; - var->blue.offset = 1; - var->red.length = 5; - var->green.length = 5; - var->blue.length = 5; - var->transp.length = 0; - } - break; - case 24: - /* 24 bpp 888 */ + } else { + var->red.offset = 0; var->red.length = 8; - var->red.offset = 16; - var->green.length = 8; - var->green.offset = 8; - var->blue.length = 8; + var->green = var->red; + var->blue = var->red; + } + break; + case 12: + /* 12 bpp 444 */ + var->red.length = 4; + var->red.offset = 8; + var->green.length = 4; + var->green.offset = 4; + var->blue.length = 4; + var->blue.offset = 0; + break; + + default: + case 16: + if (fbi->regs.lcdcon5 & S3C2410_LCDCON5_FRM565) { + /* 16 bpp, 565 format */ + var->red.offset = 11; + var->green.offset = 5; var->blue.offset = 0; - var->transp.length = 0; - break; + var->red.length = 5; + var->green.length = 6; + var->blue.length = 5; + } else { + /* 16 bpp, 5551 format */ + var->red.offset = 11; + var->green.offset = 6; + var->blue.offset = 1; + var->red.length = 5; + var->green.length = 5; + var->blue.length = 5; + } + break; + case 24: + /* 24 bpp 888 */ + var->red.length = 8; + var->red.offset = 16; + var->green.length = 8; + var->green.offset = 8; + var->blue.length = 8; + var->blue.offset = 0; + break; } return 0; } - /* s3c2410fb_activate_var * * activate (set) the controller from the given framebuffer * information -*/ - + */ static void s3c2410fb_activate_var(struct s3c2410fb_info *fbi, struct fb_var_screeninfo *var) { @@ -319,7 +309,8 @@ static void s3c2410fb_activate_var(struct s3c2410fb_info *fbi, default: /* invalid pixel depth */ - dev_err(fbi->dev, "invalid bpp %d\n", var->bits_per_pixel); + dev_err(fbi->dev, "invalid bpp %d\n", + var->bits_per_pixel); } else switch (var->bits_per_pixel) { @@ -341,19 +332,18 @@ static void s3c2410fb_activate_var(struct s3c2410fb_info *fbi, default: /* invalid pixel depth */ - dev_err(fbi->dev, "invalid bpp %d\n", var->bits_per_pixel); + dev_err(fbi->dev, "invalid bpp %d\n", + var->bits_per_pixel); } /* check to see if we need to update sync/borders */ if (!fbi->mach_info->fixed_syncs) { dprintk("setting vert: up=%d, low=%d, sync=%d\n", - var->upper_margin, var->lower_margin, - var->vsync_len); + var->upper_margin, var->lower_margin, var->vsync_len); dprintk("setting horz: lft=%d, rt=%d, sync=%d\n", - var->left_margin, var->right_margin, - var->hsync_len); + var->left_margin, var->right_margin, var->hsync_len); fbi->regs.lcdcon2 = S3C2410_LCDCON2_VBPD(var->upper_margin - 1) | @@ -373,27 +363,24 @@ static void s3c2410fb_activate_var(struct s3c2410fb_info *fbi, fbi->regs.lcdcon2 &= ~S3C2410_LCDCON2_LINEVAL(0x3ff); fbi->regs.lcdcon2 |= S3C2410_LCDCON2_LINEVAL(var->yres - 1); - switch(fbi->mach_info->type) { - case S3C2410_LCDCON1_DSCAN4: - case S3C2410_LCDCON1_STN8: - hs = var->xres / 8; - break; - case S3C2410_LCDCON1_STN4: - hs = var->xres / 4; - break; - default: - case S3C2410_LCDCON1_TFT: - hs = var->xres; - break; - + switch (fbi->mach_info->type) { + case S3C2410_LCDCON1_DSCAN4: + case S3C2410_LCDCON1_STN8: + hs = var->xres / 8; + break; + case S3C2410_LCDCON1_STN4: + hs = var->xres / 4; + break; + default: + case S3C2410_LCDCON1_TFT: + hs = var->xres; + break; } /* Special cases : STN color displays */ - if ( ((fbi->regs.lcdcon1 & S3C2410_LCDCON1_MODEMASK) == S3C2410_LCDCON1_STN8BPP) \ - || ((fbi->regs.lcdcon1 & S3C2410_LCDCON1_MODEMASK) == S3C2410_LCDCON1_STN12BPP) ) { + if (((fbi->regs.lcdcon1 & S3C2410_LCDCON1_MODEMASK) == S3C2410_LCDCON1_STN8BPP) || + ((fbi->regs.lcdcon1 & S3C2410_LCDCON1_MODEMASK) == S3C2410_LCDCON1_STN12BPP)) hs = hs * 3; - } - fbi->regs.lcdcon3 &= ~S3C2410_LCDCON3_HOZVAL(0x7ff); fbi->regs.lcdcon3 |= S3C2410_LCDCON3_HOZVAL(hs - 1); @@ -402,11 +389,10 @@ static void s3c2410fb_activate_var(struct s3c2410fb_info *fbi, int clkdiv = s3c2410fb_calc_pixclk(fbi, var->pixclock); if (fbi->mach_info->type == S3C2410_LCDCON1_TFT) { - clkdiv = (clkdiv / 2) -1; + clkdiv = (clkdiv / 2) - 1; if (clkdiv < 0) clkdiv = 0; - } - else { + } else { clkdiv = (clkdiv / 2); if (clkdiv < 2) clkdiv = 2; @@ -437,9 +423,8 @@ static void s3c2410fb_activate_var(struct s3c2410fb_info *fbi, writel(fbi->regs.lcdcon1, S3C2410_LCDCON1); } - /* - * s3c2410fb_set_par - Optional function. Alters the hardware state. + * s3c2410fb_set_par - Alters the hardware state. * @info: frame buffer structure that represents a single frame buffer * */ @@ -448,20 +433,19 @@ static int s3c2410fb_set_par(struct fb_info *info) struct s3c2410fb_info *fbi = info->par; struct fb_var_screeninfo *var = &info->var; - switch (var->bits_per_pixel) - { - case 16: - fbi->fb->fix.visual = FB_VISUAL_TRUECOLOR; - break; - case 1: - fbi->fb->fix.visual = FB_VISUAL_MONO01; - break; - default: - fbi->fb->fix.visual = FB_VISUAL_PSEUDOCOLOR; - break; + switch (var->bits_per_pixel) { + case 16: + info->fix.visual = FB_VISUAL_TRUECOLOR; + break; + case 1: + info->fix.visual = FB_VISUAL_MONO01; + break; + default: + info->fix.visual = FB_VISUAL_PSEUDOCOLOR; + break; } - fbi->fb->fix.line_length = (var->width*var->bits_per_pixel)/8; + info->fix.line_length = (var->width * var->bits_per_pixel) / 8; /* activate this new configuration */ @@ -493,7 +477,8 @@ static void schedule_palette_update(struct s3c2410fb_info *fbi, } /* from pxafb.c */ -static inline unsigned int chan_to_field(unsigned int chan, struct fb_bitfield *bf) +static inline unsigned int chan_to_field(unsigned int chan, + struct fb_bitfield *bf) { chan &= 0xffff; chan >>= 16 - bf->length; @@ -507,18 +492,19 @@ static int s3c2410fb_setcolreg(unsigned regno, struct s3c2410fb_info *fbi = info->par; unsigned int val; - /* dprintk("setcol: regno=%d, rgb=%d,%d,%d\n", regno, red, green, blue); */ + /* dprintk("setcol: regno=%d, rgb=%d,%d,%d\n", + regno, red, green, blue); */ - switch (fbi->fb->fix.visual) { + switch (info->fix.visual) { case FB_VISUAL_TRUECOLOR: - /* true-colour, use pseuo-palette */ + /* true-colour, use pseudo-palette */ if (regno < 16) { - u32 *pal = fbi->fb->pseudo_palette; + u32 *pal = info->pseudo_palette; - val = chan_to_field(red, &fbi->fb->var.red); - val |= chan_to_field(green, &fbi->fb->var.green); - val |= chan_to_field(blue, &fbi->fb->var.blue); + val = chan_to_field(red, &info->var.red); + val |= chan_to_field(green, &info->var.green); + val |= chan_to_field(blue, &info->var.blue); pal[regno] = val; } @@ -539,14 +525,13 @@ static int s3c2410fb_setcolreg(unsigned regno, break; default: - return 1; /* unknown type */ + return 1; /* unknown type */ } return 0; } - -/** +/* * s3c2410fb_blank * @blank_mode: the blank mode we want. * @info: frame buffer structure that represents a single frame buffer @@ -579,12 +564,14 @@ static int s3c2410fb_blank(int blank_mode, struct fb_info *info) return 0; } -static int s3c2410fb_debug_show(struct device *dev, struct device_attribute *attr, char *buf) +static int s3c2410fb_debug_show(struct device *dev, + struct device_attribute *attr, char *buf) { return snprintf(buf, PAGE_SIZE, "%s\n", debug ? "on" : "off"); } -static int s3c2410fb_debug_store(struct device *dev, struct device_attribute *attr, - const char *buf, size_t len) +static int s3c2410fb_debug_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t len) { if (mach_info == NULL) return -EINVAL; @@ -607,10 +594,7 @@ static int s3c2410fb_debug_store(struct device *dev, struct device_attribute *at return len; } - -static DEVICE_ATTR(debug, 0666, - s3c2410fb_debug_show, - s3c2410fb_debug_store); +static DEVICE_ATTR(debug, 0666, s3c2410fb_debug_show, s3c2410fb_debug_store); static struct fb_ops s3c2410fb_ops = { .owner = THIS_MODULE, @@ -623,7 +607,6 @@ static struct fb_ops s3c2410fb_ops = { .fb_imageblit = cfb_imageblit, }; - /* * s3c2410fb_map_video_memory(): * Allocates the DRAM memory for the frame buffer. This buffer is @@ -661,7 +644,8 @@ static int __init s3c2410fb_map_video_memory(struct s3c2410fb_info *fbi) static inline void s3c2410fb_unmap_video_memory(struct s3c2410fb_info *fbi) { - dma_free_writecombine(fbi->dev,fbi->map_size,fbi->map_cpu, fbi->map_dma); + dma_free_writecombine(fbi->dev, fbi->map_size, fbi->map_cpu, + fbi->map_dma); } static inline void modify_gpio(void __iomem *reg, @@ -673,11 +657,9 @@ static inline void modify_gpio(void __iomem *reg, writel(tmp | set, reg); } - /* * s3c2410fb_init_registers - Initialise all LCD-related registers */ - static int s3c2410fb_init_registers(struct s3c2410fb_info *fbi) { unsigned long flags; @@ -702,7 +684,7 @@ static int s3c2410fb_init_registers(struct s3c2410fb_info *fbi) writel(fbi->regs.lcdcon4, regs + S3C2410_LCDCON4); writel(fbi->regs.lcdcon5, regs + S3C2410_LCDCON5); - s3c2410fb_set_lcdaddr(fbi); + s3c2410fb_set_lcdaddr(fbi); dprintk("LPCSEL = 0x%08lx\n", mach_info->lpcsel); writel(mach_info->lpcsel, regs + S3C2410_LPCSEL); @@ -721,13 +703,13 @@ static int s3c2410fb_init_registers(struct s3c2410fb_info *fbi) static void s3c2410fb_write_palette(struct s3c2410fb_info *fbi) { unsigned int i; - unsigned long ent; void __iomem *regs = fbi->io; fbi->palette_ready = 0; for (i = 0; i < 256; i++) { - if ((ent = fbi->palette_buffer[i]) == PALETTE_BUFF_CLEAR) + unsigned long ent = fbi->palette_buffer[i]; + if (ent == PALETTE_BUFF_CLEAR) continue; writel(ent, regs + S3C2410_TFTPAL(i)); @@ -761,12 +743,12 @@ static irqreturn_t s3c2410fb_irq(int irq, void *dev_id) return IRQ_HANDLED; } -static char driver_name[]="s3c2410fb"; +static char driver_name[] = "s3c2410fb"; static int __init s3c2410fb_probe(struct platform_device *pdev) { struct s3c2410fb_info *info; - struct fb_info *fbinfo; + struct fb_info *fbinfo; struct s3c2410fb_hw *mregs; struct resource *res; int ret; @@ -777,7 +759,8 @@ static int __init s3c2410fb_probe(struct platform_device *pdev) mach_info = pdev->dev.platform_data; if (mach_info == NULL) { - dev_err(&pdev->dev,"no platform data for lcd, cannot attach\n"); + dev_err(&pdev->dev, + "no platform data for lcd, cannot attach\n"); return -EINVAL; } @@ -790,9 +773,8 @@ static int __init s3c2410fb_probe(struct platform_device *pdev) } fbinfo = framebuffer_alloc(sizeof(struct s3c2410fb_info), &pdev->dev); - if (!fbinfo) { + if (!fbinfo) return -ENOMEM; - } info = fbinfo->par; info->fb = fbinfo; @@ -800,12 +782,12 @@ static int __init s3c2410fb_probe(struct platform_device *pdev) res = platform_get_resource(pdev, IORESOURCE_MEM, 0); if (res == NULL) { - dev_err(&pdev->dev, "failed to get memory registersn"); + dev_err(&pdev->dev, "failed to get memory registers\n"); ret = -ENXIO; goto dealloc_fb; } - size = (res->end - res->start)+1; + size = (res->end - res->start) + 1; info->mem = request_mem_region(res->start, size, pdev->name); if (info->mem == NULL) { dev_err(&pdev->dev, "failed to get memory region\n"); @@ -859,13 +841,19 @@ static int __init s3c2410fb_probe(struct platform_device *pdev) fbinfo->var.yres_virtual = mach_info->yres.defval; fbinfo->var.bits_per_pixel = mach_info->bpp.defval; - fbinfo->var.upper_margin = S3C2410_LCDCON2_GET_VBPD(mregs->lcdcon2) + 1; - fbinfo->var.lower_margin = S3C2410_LCDCON2_GET_VFPD(mregs->lcdcon2) + 1; - fbinfo->var.vsync_len = S3C2410_LCDCON2_GET_VSPW(mregs->lcdcon2) + 1; + fbinfo->var.upper_margin = + S3C2410_LCDCON2_GET_VBPD(mregs->lcdcon2) + 1; + fbinfo->var.lower_margin = + S3C2410_LCDCON2_GET_VFPD(mregs->lcdcon2) + 1; + fbinfo->var.vsync_len = + S3C2410_LCDCON2_GET_VSPW(mregs->lcdcon2) + 1; - fbinfo->var.left_margin = S3C2410_LCDCON3_GET_HFPD(mregs->lcdcon3) + 1; - fbinfo->var.right_margin = S3C2410_LCDCON3_GET_HBPD(mregs->lcdcon3) + 1; - fbinfo->var.hsync_len = S3C2410_LCDCON4_GET_HSPW(mregs->lcdcon4) + 1; + fbinfo->var.left_margin = + S3C2410_LCDCON3_GET_HFPD(mregs->lcdcon3) + 1; + fbinfo->var.right_margin = + S3C2410_LCDCON3_GET_HBPD(mregs->lcdcon3) + 1; + fbinfo->var.hsync_len = + S3C2410_LCDCON4_GET_HSPW(mregs->lcdcon4) + 1; fbinfo->var.red.offset = 11; fbinfo->var.green.offset = 5; @@ -875,7 +863,7 @@ static int __init s3c2410fb_probe(struct platform_device *pdev) fbinfo->var.green.length = 6; fbinfo->var.blue.length = 5; fbinfo->var.transp.length = 0; - fbinfo->fix.smem_len = mach_info->xres.max * + fbinfo->fix.smem_len = mach_info->xres.max * mach_info->yres.max * mach_info->bpp.max / 8; @@ -904,20 +892,21 @@ static int __init s3c2410fb_probe(struct platform_device *pdev) /* Initialize video memory */ ret = s3c2410fb_map_video_memory(info); if (ret) { - printk( KERN_ERR "Failed to allocate video RAM: %d\n", ret); + printk(KERN_ERR "Failed to allocate video RAM: %d\n", ret); ret = -ENOMEM; goto release_clock; } dprintk("got video memory\n"); - ret = s3c2410fb_init_registers(info); + s3c2410fb_init_registers(info); - ret = s3c2410fb_check_var(&fbinfo->var, fbinfo); + s3c2410fb_check_var(&fbinfo->var, fbinfo); ret = register_framebuffer(fbinfo); if (ret < 0) { - printk(KERN_ERR "Failed to register framebuffer device: %d\n", ret); + printk(KERN_ERR "Failed to register framebuffer device: %d\n", + ret); goto free_video_memory; } @@ -935,7 +924,7 @@ release_clock: clk_disable(info->clk); clk_put(info->clk); release_irq: - free_irq(irq,info); + free_irq(irq, info); release_regs: iounmap(info->io); release_mem: @@ -949,8 +938,7 @@ dealloc_fb: /* s3c2410fb_stop_lcd * * shutdown the lcd controller -*/ - + */ static void s3c2410fb_stop_lcd(struct s3c2410fb_info *fbi) { unsigned long flags; @@ -968,7 +956,7 @@ static void s3c2410fb_stop_lcd(struct s3c2410fb_info *fbi) */ static int s3c2410fb_remove(struct platform_device *pdev) { - struct fb_info *fbinfo = platform_get_drvdata(pdev); + struct fb_info *fbinfo = platform_get_drvdata(pdev); struct s3c2410fb_info *info = fbinfo->par; int irq; @@ -977,14 +965,14 @@ static int s3c2410fb_remove(struct platform_device *pdev) s3c2410fb_unmap_video_memory(info); - if (info->clk) { - clk_disable(info->clk); - clk_put(info->clk); - info->clk = NULL; + if (info->clk) { + clk_disable(info->clk); + clk_put(info->clk); + info->clk = NULL; } irq = platform_get_irq(pdev, 0); - free_irq(irq,info); + free_irq(irq, info); release_resource(info->mem); kfree(info->mem); @@ -997,7 +985,6 @@ static int s3c2410fb_remove(struct platform_device *pdev) #ifdef CONFIG_PM /* suspend and resume support for the lcd controller */ - static int s3c2410fb_suspend(struct platform_device *dev, pm_message_t state) { struct fb_info *fbinfo = platform_get_drvdata(dev); @@ -1054,10 +1041,10 @@ static void __exit s3c2410fb_cleanup(void) platform_driver_unregister(&s3c2410fb_driver); } - module_init(s3c2410fb_init); module_exit(s3c2410fb_cleanup); -MODULE_AUTHOR("Arnaud Patard <arnaud.patard@rtp-net.org>, Ben Dooks <ben-linux@fluff.org>"); +MODULE_AUTHOR("Arnaud Patard <arnaud.patard@rtp-net.org>, " + "Ben Dooks <ben-linux@fluff.org>"); MODULE_DESCRIPTION("Framebuffer driver for the s3c2410"); MODULE_LICENSE("GPL"); |