From b7d2d37276c1dce86d9a55239f0686e1bd81a37f Mon Sep 17 00:00:00 2001 From: Alexander Shiyan Date: Sat, 15 Feb 2014 09:56:23 +0400 Subject: [PATCH] video: imxfb: Remove unused fields from platform data structure Some fields in platform data structure is never used by boards. This patch removes these fields and as a result optimizes private driver structure a bit. Additionally patch removes backligh_power() callback, so if it will be needed in the future, this feature should be added as pwm{gpio,etc.}-regulator to the board code or in the DTS. Signed-off-by: Alexander Shiyan Acked-by: Sascha Hauer Signed-off-by: Tomi Valkeinen --- drivers/video/imxfb.c | 64 ++++++----------------- include/linux/platform_data/video-imxfb.h | 10 ---- 2 files changed, 17 insertions(+), 57 deletions(-) diff --git a/drivers/video/imxfb.c b/drivers/video/imxfb.c index e50b67fada51..5b07053bbd01 100644 --- a/drivers/video/imxfb.c +++ b/drivers/video/imxfb.c @@ -156,11 +156,8 @@ struct imxfb_info { * the framebuffer memory region to. */ dma_addr_t map_dma; - u_char *map_cpu; u_int map_size; - u_char *screen_cpu; - dma_addr_t screen_dma; u_int palette_size; dma_addr_t dbar1; @@ -170,9 +167,8 @@ struct imxfb_info { u_int pwmr; u_int lscr1; u_int dmacr; - u_int cmap_inverse:1, - cmap_static:1, - unused:30; + bool cmap_inverse; + bool cmap_static; struct imx_fb_videomode *mode; int num_modes; @@ -180,8 +176,6 @@ struct imxfb_info { struct backlight_device *bl; #endif - void (*backlight_power)(int); - struct regulator *lcd_pwr; }; @@ -573,7 +567,7 @@ static void imxfb_enable_controller(struct imxfb_info *fbi) pr_debug("Enabling LCD controller\n"); - writel(fbi->screen_dma, fbi->regs + LCDC_SSA); + writel(fbi->map_dma, fbi->regs + LCDC_SSA); /* panning offset 0 (0 pixel offset) */ writel(0x00000000, fbi->regs + LCDC_POS); @@ -592,9 +586,6 @@ static void imxfb_enable_controller(struct imxfb_info *fbi) clk_prepare_enable(fbi->clk_ahb); clk_prepare_enable(fbi->clk_per); fbi->enabled = true; - - if (fbi->backlight_power) - fbi->backlight_power(1); } static void imxfb_disable_controller(struct imxfb_info *fbi) @@ -604,9 +595,6 @@ static void imxfb_disable_controller(struct imxfb_info *fbi) pr_debug("Disabling LCD controller\n"); - if (fbi->backlight_power) - fbi->backlight_power(0); - clk_disable_unprepare(fbi->clk_per); clk_disable_unprepare(fbi->clk_ipg); clk_disable_unprepare(fbi->clk_ahb); @@ -790,13 +778,9 @@ static int imxfb_init_fbinfo(struct platform_device *pdev) info->flags = FBINFO_FLAG_DEFAULT | FBINFO_READS_FAST; if (pdata) { - info->var.grayscale = pdata->cmap_greyscale; - fbi->cmap_inverse = pdata->cmap_inverse; - fbi->cmap_static = pdata->cmap_static; fbi->lscr1 = pdata->lscr1; fbi->dmacr = pdata->dmacr; fbi->pwmr = pdata->pwmr; - fbi->backlight_power = pdata->backlight_power; } else { np = pdev->dev.of_node; info->var.grayscale = of_property_read_bool(np, @@ -808,8 +792,6 @@ static int imxfb_init_fbinfo(struct platform_device *pdev) of_property_read_u32(np, "fsl,lscr1", &fbi->lscr1); of_property_read_u32(np, "fsl,dmacr", &fbi->dmacr); - - fbi->backlight_power = NULL; } return 0; @@ -1003,32 +985,18 @@ static int imxfb_probe(struct platform_device *pdev) goto failed_ioremap; } - /* Seems not being used by anyone, so no support for oftree */ - if (!pdata || !pdata->fixed_screen_cpu) { - fbi->map_size = PAGE_ALIGN(info->fix.smem_len); - fbi->map_cpu = dma_alloc_writecombine(&pdev->dev, - fbi->map_size, &fbi->map_dma, GFP_KERNEL); + fbi->map_size = PAGE_ALIGN(info->fix.smem_len); + info->screen_base = dma_alloc_writecombine(&pdev->dev, fbi->map_size, + &fbi->map_dma, GFP_KERNEL); - if (!fbi->map_cpu) { - dev_err(&pdev->dev, "Failed to allocate video RAM: %d\n", ret); - ret = -ENOMEM; - goto failed_map; - } - - info->screen_base = fbi->map_cpu; - fbi->screen_cpu = fbi->map_cpu; - fbi->screen_dma = fbi->map_dma; - info->fix.smem_start = fbi->screen_dma; - } else { - /* Fixed framebuffer mapping enables location of the screen in eSRAM */ - fbi->map_cpu = pdata->fixed_screen_cpu; - fbi->map_dma = pdata->fixed_screen_dma; - info->screen_base = fbi->map_cpu; - fbi->screen_cpu = fbi->map_cpu; - fbi->screen_dma = fbi->map_dma; - info->fix.smem_start = fbi->screen_dma; + if (!info->screen_base) { + dev_err(&pdev->dev, "Failed to allocate video RAM: %d\n", ret); + ret = -ENOMEM; + goto failed_map; } + info->fix.smem_start = fbi->map_dma; + if (pdata && pdata->init) { ret = pdata->init(fbi->pdev); if (ret) @@ -1087,9 +1055,8 @@ failed_cmap: if (pdata && pdata->exit) pdata->exit(fbi->pdev); failed_platform_init: - if (pdata && !pdata->fixed_screen_cpu) - dma_free_writecombine(&pdev->dev,fbi->map_size,fbi->map_cpu, - fbi->map_dma); + dma_free_writecombine(&pdev->dev, fbi->map_size, info->screen_base, + fbi->map_dma); failed_map: iounmap(fbi->regs); failed_ioremap: @@ -1127,6 +1094,9 @@ static int imxfb_remove(struct platform_device *pdev) kfree(info->pseudo_palette); framebuffer_release(info); + dma_free_writecombine(&pdev->dev, fbi->map_size, info->screen_base, + fbi->map_dma); + iounmap(fbi->regs); release_mem_region(res->start, resource_size(res)); diff --git a/include/linux/platform_data/video-imxfb.h b/include/linux/platform_data/video-imxfb.h index dd1bed97683c..18e908324549 100644 --- a/include/linux/platform_data/video-imxfb.h +++ b/include/linux/platform_data/video-imxfb.h @@ -61,22 +61,12 @@ struct imx_fb_platform_data { struct imx_fb_videomode *mode; int num_modes; - u_int cmap_greyscale:1, - cmap_inverse:1, - cmap_static:1, - unused:29; - u_int pwmr; u_int lscr1; u_int dmacr; - u_char * fixed_screen_cpu; - dma_addr_t fixed_screen_dma; - int (*init)(struct platform_device *); void (*exit)(struct platform_device *); - - void (*backlight_power)(int); }; #endif /* ifndef __MACH_IMXFB_H__ */ -- 2.34.1