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Diffstat (limited to 'drivers/video/wm8505fb.c')
-rw-r--r--drivers/video/wm8505fb.c145
1 files changed, 45 insertions, 100 deletions
diff --git a/drivers/video/wm8505fb.c b/drivers/video/wm8505fb.c
index 4dd0580f96fd..01f9ace068e2 100644
--- a/drivers/video/wm8505fb.c
+++ b/drivers/video/wm8505fb.c
@@ -14,25 +14,25 @@
* GNU General Public License for more details.
*/
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/errno.h>
-#include <linux/string.h>
-#include <linux/mm.h>
-#include <linux/slab.h>
#include <linux/delay.h>
+#include <linux/dma-mapping.h>
#include <linux/fb.h>
+#include <linux/errno.h>
+#include <linux/err.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/io.h>
-#include <linux/dma-mapping.h>
-#include <linux/platform_device.h>
-#include <linux/wait.h>
+#include <linux/kernel.h>
+#include <linux/memblock.h>
+#include <linux/mm.h>
+#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_fdt.h>
-#include <linux/memblock.h>
-
-#include <linux/platform_data/video-vt8500lcdfb.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+#include <linux/string.h>
+#include <linux/wait.h>
+#include <video/of_display_timing.h>
#include "wm8505fb_regs.h"
#include "wmt_ge_rops.h"
@@ -263,26 +263,22 @@ static struct fb_ops wm8505fb_ops = {
static int wm8505fb_probe(struct platform_device *pdev)
{
struct wm8505fb_info *fbi;
- struct resource *res;
+ struct resource *res;
+ struct display_timings *disp_timing;
void *addr;
int ret;
- struct fb_videomode of_mode;
- struct device_node *np;
+ struct fb_videomode mode;
u32 bpp;
dma_addr_t fb_mem_phys;
unsigned long fb_mem_len;
void *fb_mem_virt;
- ret = -ENOMEM;
- fbi = NULL;
-
fbi = devm_kzalloc(&pdev->dev, sizeof(struct wm8505fb_info) +
sizeof(u32) * 16, GFP_KERNEL);
if (!fbi) {
dev_err(&pdev->dev, "Failed to initialize framebuffer device\n");
- ret = -ENOMEM;
- goto failed;
+ return -ENOMEM;
}
strcpy(fbi->fb.fix.id, DRIVER_NAME);
@@ -308,54 +304,23 @@ static int wm8505fb_probe(struct platform_device *pdev)
fbi->fb.pseudo_palette = addr;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (res == NULL) {
- dev_err(&pdev->dev, "no I/O memory resource defined\n");
- ret = -ENODEV;
- goto failed_fbi;
- }
+ fbi->regbase = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(fbi->regbase))
+ return PTR_ERR(fbi->regbase);
- res = request_mem_region(res->start, resource_size(res), DRIVER_NAME);
- if (res == NULL) {
- dev_err(&pdev->dev, "failed to request I/O memory\n");
- ret = -EBUSY;
- goto failed_fbi;
- }
-
- fbi->regbase = ioremap(res->start, resource_size(res));
- if (fbi->regbase == NULL) {
- dev_err(&pdev->dev, "failed to map I/O memory\n");
- ret = -EBUSY;
- goto failed_free_res;
- }
+ disp_timing = of_get_display_timings(pdev->dev.of_node);
+ if (!disp_timing)
+ return -EINVAL;
- np = of_parse_phandle(pdev->dev.of_node, "default-mode", 0);
- if (!np) {
- pr_err("%s: No display description in Device Tree\n", __func__);
- ret = -EINVAL;
- goto failed_free_res;
- }
+ ret = of_get_fb_videomode(pdev->dev.of_node, &mode, OF_USE_NATIVE_MODE);
+ if (ret)
+ return ret;
- /*
- * This code is copied from Sascha Hauer's of_videomode helper
- * and can be replaced with a call to the helper once mainlined
- */
- ret = 0;
- ret |= of_property_read_u32(np, "hactive", &of_mode.xres);
- ret |= of_property_read_u32(np, "vactive", &of_mode.yres);
- ret |= of_property_read_u32(np, "hback-porch", &of_mode.left_margin);
- ret |= of_property_read_u32(np, "hfront-porch", &of_mode.right_margin);
- ret |= of_property_read_u32(np, "hsync-len", &of_mode.hsync_len);
- ret |= of_property_read_u32(np, "vback-porch", &of_mode.upper_margin);
- ret |= of_property_read_u32(np, "vfront-porch", &of_mode.lower_margin);
- ret |= of_property_read_u32(np, "vsync-len", &of_mode.vsync_len);
- ret |= of_property_read_u32(np, "bpp", &bpp);
- if (ret) {
- pr_err("%s: Unable to read display properties\n", __func__);
- goto failed_free_res;
- }
+ ret = of_property_read_u32(pdev->dev.of_node, "bits-per-pixel", &bpp);
+ if (ret)
+ return ret;
- of_mode.vmode = FB_VMODE_NONINTERLACED;
- fb_videomode_to_var(&fbi->fb.var, &of_mode);
+ fb_videomode_to_var(&fbi->fb.var, &mode);
fbi->fb.var.nonstd = 0;
fbi->fb.var.activate = FB_ACTIVATE_NOW;
@@ -364,16 +329,16 @@ static int wm8505fb_probe(struct platform_device *pdev)
fbi->fb.var.width = -1;
/* try allocating the framebuffer */
- fb_mem_len = of_mode.xres * of_mode.yres * 2 * (bpp / 8);
- fb_mem_virt = dma_alloc_coherent(&pdev->dev, fb_mem_len, &fb_mem_phys,
+ fb_mem_len = mode.xres * mode.yres * 2 * (bpp / 8);
+ fb_mem_virt = dmam_alloc_coherent(&pdev->dev, fb_mem_len, &fb_mem_phys,
GFP_KERNEL);
if (!fb_mem_virt) {
pr_err("%s: Failed to allocate framebuffer\n", __func__);
return -ENOMEM;
- };
+ }
- fbi->fb.var.xres_virtual = of_mode.xres;
- fbi->fb.var.yres_virtual = of_mode.yres * 2;
+ fbi->fb.var.xres_virtual = mode.xres;
+ fbi->fb.var.yres_virtual = mode.yres * 2;
fbi->fb.var.bits_per_pixel = bpp;
fbi->fb.fix.smem_start = fb_mem_phys;
@@ -381,28 +346,29 @@ static int wm8505fb_probe(struct platform_device *pdev)
fbi->fb.screen_base = fb_mem_virt;
fbi->fb.screen_size = fb_mem_len;
+ fbi->contrast = 0x10;
+ ret = wm8505fb_set_par(&fbi->fb);
+ if (ret) {
+ dev_err(&pdev->dev, "Failed to set parameters\n");
+ return ret;
+ }
+
if (fb_alloc_cmap(&fbi->fb.cmap, 256, 0) < 0) {
dev_err(&pdev->dev, "Failed to allocate color map\n");
- ret = -ENOMEM;
- goto failed_free_io;
+ return -ENOMEM;
}
wm8505fb_init_hw(&fbi->fb);
- fbi->contrast = 0x80;
- ret = wm8505fb_set_par(&fbi->fb);
- if (ret) {
- dev_err(&pdev->dev, "Failed to set parameters\n");
- goto failed_free_cmap;
- }
-
platform_set_drvdata(pdev, fbi);
ret = register_framebuffer(&fbi->fb);
if (ret < 0) {
dev_err(&pdev->dev,
"Failed to register framebuffer device: %d\n", ret);
- goto failed_free_cmap;
+ if (fbi->fb.cmap.len)
+ fb_dealloc_cmap(&fbi->fb.cmap);
+ return ret;
}
ret = device_create_file(&pdev->dev, &dev_attr_contrast);
@@ -416,25 +382,11 @@ static int wm8505fb_probe(struct platform_device *pdev)
fbi->fb.fix.smem_start + fbi->fb.fix.smem_len - 1);
return 0;
-
-failed_free_cmap:
- if (fbi->fb.cmap.len)
- fb_dealloc_cmap(&fbi->fb.cmap);
-failed_free_io:
- iounmap(fbi->regbase);
-failed_free_res:
- release_mem_region(res->start, resource_size(res));
-failed_fbi:
- platform_set_drvdata(pdev, NULL);
- kfree(fbi);
-failed:
- return ret;
}
static int wm8505fb_remove(struct platform_device *pdev)
{
struct wm8505fb_info *fbi = platform_get_drvdata(pdev);
- struct resource *res;
device_remove_file(&pdev->dev, &dev_attr_contrast);
@@ -445,13 +397,6 @@ static int wm8505fb_remove(struct platform_device *pdev)
if (fbi->fb.cmap.len)
fb_dealloc_cmap(&fbi->fb.cmap);
- iounmap(fbi->regbase);
-
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- release_mem_region(res->start, resource_size(res));
-
- kfree(fbi);
-
return 0;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-30 21:22:20 +0000