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path: root/drivers/video/wm8505fb.c
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Diffstat (limited to 'drivers/video/wm8505fb.c')
-rw-r--r--drivers/video/wm8505fb.c411
1 files changed, 0 insertions, 411 deletions
diff --git a/drivers/video/wm8505fb.c b/drivers/video/wm8505fb.c
deleted file mode 100644
index c8703bd61b7..00000000000
--- a/drivers/video/wm8505fb.c
+++ /dev/null
@@ -1,411 +0,0 @@
-/*
- * WonderMedia WM8505 Frame Buffer device driver
- *
- * Copyright (C) 2010 Ed Spiridonov <edo.rus@gmail.com>
- * Based on vt8500lcdfb.c
- *
- * This software is licensed under the terms of the GNU General Public
- * License version 2, as published by the Free Software Foundation, and
- * may be copied, distributed, and modified under those terms.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * 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/fb.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 <mach/vt8500fb.h>
-
-#include "wm8505fb_regs.h"
-#include "wmt_ge_rops.h"
-
-#define DRIVER_NAME "wm8505-fb"
-
-#define to_wm8505fb_info(__info) container_of(__info, \
- struct wm8505fb_info, fb)
-struct wm8505fb_info {
- struct fb_info fb;
- void __iomem *regbase;
- unsigned int contrast;
-};
-
-
-static int wm8505fb_init_hw(struct fb_info *info)
-{
- struct wm8505fb_info *fbi = to_wm8505fb_info(info);
-
- int i;
-
- /* I know the purpose only of few registers, so clear unknown */
- for (i = 0; i < 0x200; i += 4)
- writel(0, fbi->regbase + i);
-
- /* Set frame buffer address */
- writel(fbi->fb.fix.smem_start, fbi->regbase + WMT_GOVR_FBADDR);
- writel(fbi->fb.fix.smem_start, fbi->regbase + WMT_GOVR_FBADDR1);
-
- /* Set in-memory picture format to RGB 32bpp */
- writel(0x1c, fbi->regbase + WMT_GOVR_COLORSPACE);
- writel(1, fbi->regbase + WMT_GOVR_COLORSPACE1);
-
- /* Virtual buffer size */
- writel(info->var.xres, fbi->regbase + WMT_GOVR_XRES);
- writel(info->var.xres_virtual, fbi->regbase + WMT_GOVR_XRES_VIRTUAL);
-
- /* black magic ;) */
- writel(0xf, fbi->regbase + WMT_GOVR_FHI);
- writel(4, fbi->regbase + WMT_GOVR_DVO_SET);
- writel(1, fbi->regbase + WMT_GOVR_MIF_ENABLE);
- writel(1, fbi->regbase + WMT_GOVR_REG_UPDATE);
-
- return 0;
-}
-
-static int wm8505fb_set_timing(struct fb_info *info)
-{
- struct wm8505fb_info *fbi = to_wm8505fb_info(info);
-
- int h_start = info->var.left_margin;
- int h_end = h_start + info->var.xres;
- int h_all = h_end + info->var.right_margin;
- int h_sync = info->var.hsync_len;
-
- int v_start = info->var.upper_margin;
- int v_end = v_start + info->var.yres;
- int v_all = v_end + info->var.lower_margin;
- int v_sync = info->var.vsync_len;
-
- writel(0, fbi->regbase + WMT_GOVR_TG);
-
- writel(h_start, fbi->regbase + WMT_GOVR_TIMING_H_START);
- writel(h_end, fbi->regbase + WMT_GOVR_TIMING_H_END);
- writel(h_all, fbi->regbase + WMT_GOVR_TIMING_H_ALL);
- writel(h_sync, fbi->regbase + WMT_GOVR_TIMING_H_SYNC);
-
- writel(v_start, fbi->regbase + WMT_GOVR_TIMING_V_START);
- writel(v_end, fbi->regbase + WMT_GOVR_TIMING_V_END);
- writel(v_all, fbi->regbase + WMT_GOVR_TIMING_V_ALL);
- writel(v_sync, fbi->regbase + WMT_GOVR_TIMING_V_SYNC);
-
- writel(1, fbi->regbase + WMT_GOVR_TG);
-
- return 0;
-}
-
-
-static int wm8505fb_set_par(struct fb_info *info)
-{
- struct wm8505fb_info *fbi = to_wm8505fb_info(info);
-
- if (!fbi)
- return -EINVAL;
-
- if (info->var.bits_per_pixel == 32) {
- info->var.red.offset = 16;
- info->var.red.length = 8;
- info->var.red.msb_right = 0;
- info->var.green.offset = 8;
- info->var.green.length = 8;
- info->var.green.msb_right = 0;
- info->var.blue.offset = 0;
- info->var.blue.length = 8;
- info->var.blue.msb_right = 0;
- info->fix.visual = FB_VISUAL_TRUECOLOR;
- info->fix.line_length = info->var.xres_virtual << 2;
- }
-
- wm8505fb_set_timing(info);
-
- writel(fbi->contrast<<16 | fbi->contrast<<8 | fbi->contrast,
- fbi->regbase + WMT_GOVR_CONTRAST);
-
- return 0;
-}
-
-static ssize_t contrast_show(struct device *dev,
- struct device_attribute *attr, char *buf)
-{
- struct fb_info *info = dev_get_drvdata(dev);
- struct wm8505fb_info *fbi = to_wm8505fb_info(info);
-
- return sprintf(buf, "%d\n", fbi->contrast);
-}
-
-static ssize_t contrast_store(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t count)
-{
- struct fb_info *info = dev_get_drvdata(dev);
- struct wm8505fb_info *fbi = to_wm8505fb_info(info);
- unsigned long tmp;
-
- if (strict_strtoul(buf, 10, &tmp) || (tmp > 0xff))
- return -EINVAL;
- fbi->contrast = tmp;
-
- wm8505fb_set_par(info);
-
- return count;
-}
-
-static DEVICE_ATTR(contrast, 0644, contrast_show, contrast_store);
-
-static inline u_int chan_to_field(u_int chan, struct fb_bitfield *bf)
-{
- chan &= 0xffff;
- chan >>= 16 - bf->length;
- return chan << bf->offset;
-}
-
-static int wm8505fb_setcolreg(unsigned regno, unsigned red, unsigned green,
- unsigned blue, unsigned transp,
- struct fb_info *info) {
- struct wm8505fb_info *fbi = to_wm8505fb_info(info);
- int ret = 1;
- unsigned int val;
- if (regno >= 256)
- return -EINVAL;
-
- if (info->var.grayscale)
- red = green = blue =
- (19595 * red + 38470 * green + 7471 * blue) >> 16;
-
- switch (fbi->fb.fix.visual) {
- case FB_VISUAL_TRUECOLOR:
- if (regno < 16) {
- 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);
-
- pal[regno] = val;
- ret = 0;
- }
- break;
- }
-
- return ret;
-}
-
-static int wm8505fb_pan_display(struct fb_var_screeninfo *var,
- struct fb_info *info)
-{
- struct wm8505fb_info *fbi = to_wm8505fb_info(info);
-
- writel(var->xoffset, fbi->regbase + WMT_GOVR_XPAN);
- writel(var->yoffset, fbi->regbase + WMT_GOVR_YPAN);
- return 0;
-}
-
-static int wm8505fb_blank(int blank, struct fb_info *info)
-{
- struct wm8505fb_info *fbi = to_wm8505fb_info(info);
-
- switch (blank) {
- case FB_BLANK_UNBLANK:
- wm8505fb_set_timing(info);
- break;
- default:
- writel(0, fbi->regbase + WMT_GOVR_TIMING_V_SYNC);
- break;
- }
-
- return 0;
-}
-
-static struct fb_ops wm8505fb_ops = {
- .owner = THIS_MODULE,
- .fb_set_par = wm8505fb_set_par,
- .fb_setcolreg = wm8505fb_setcolreg,
- .fb_fillrect = wmt_ge_fillrect,
- .fb_copyarea = wmt_ge_copyarea,
- .fb_imageblit = sys_imageblit,
- .fb_sync = wmt_ge_sync,
- .fb_pan_display = wm8505fb_pan_display,
- .fb_blank = wm8505fb_blank,
-};
-
-static int __devinit wm8505fb_probe(struct platform_device *pdev)
-{
- struct wm8505fb_info *fbi;
- struct resource *res;
- void *addr;
- struct vt8500fb_platform_data *pdata;
- int ret;
-
- pdata = pdev->dev.platform_data;
-
- ret = -ENOMEM;
- fbi = NULL;
-
- fbi = kzalloc(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;
- }
-
- strcpy(fbi->fb.fix.id, DRIVER_NAME);
-
- fbi->fb.fix.type = FB_TYPE_PACKED_PIXELS;
- fbi->fb.fix.xpanstep = 1;
- fbi->fb.fix.ypanstep = 1;
- fbi->fb.fix.ywrapstep = 0;
- fbi->fb.fix.accel = FB_ACCEL_NONE;
-
- fbi->fb.fbops = &wm8505fb_ops;
- fbi->fb.flags = FBINFO_DEFAULT
- | FBINFO_HWACCEL_COPYAREA
- | FBINFO_HWACCEL_FILLRECT
- | FBINFO_HWACCEL_XPAN
- | FBINFO_HWACCEL_YPAN
- | FBINFO_VIRTFB
- | FBINFO_PARTIAL_PAN_OK;
- fbi->fb.node = -1;
-
- addr = fbi;
- addr = addr + sizeof(struct wm8505fb_info);
- 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;
- }
-
- 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;
- }
-
- fb_videomode_to_var(&fbi->fb.var, &pdata->mode);
-
- fbi->fb.var.nonstd = 0;
- fbi->fb.var.activate = FB_ACTIVATE_NOW;
-
- fbi->fb.var.height = -1;
- fbi->fb.var.width = -1;
- fbi->fb.var.xres_virtual = pdata->xres_virtual;
- fbi->fb.var.yres_virtual = pdata->yres_virtual;
- fbi->fb.var.bits_per_pixel = pdata->bpp;
-
- fbi->fb.fix.smem_start = pdata->video_mem_phys;
- fbi->fb.fix.smem_len = pdata->video_mem_len;
- fbi->fb.screen_base = pdata->video_mem_virt;
- fbi->fb.screen_size = pdata->video_mem_len;
-
- 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;
- }
-
- 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;
- }
-
- ret = device_create_file(&pdev->dev, &dev_attr_contrast);
- if (ret < 0) {
- printk(KERN_WARNING "fb%d: failed to register attributes (%d)\n",
- fbi->fb.node, ret);
- }
-
- printk(KERN_INFO "fb%d: %s frame buffer at 0x%lx-0x%lx\n",
- fbi->fb.node, fbi->fb.fix.id, fbi->fb.fix.smem_start,
- 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 __devexit 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);
-
- unregister_framebuffer(&fbi->fb);
-
- writel(0, fbi->regbase);
-
- 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;
-}
-
-static struct platform_driver wm8505fb_driver = {
- .probe = wm8505fb_probe,
- .remove = __devexit_p(wm8505fb_remove),
- .driver = {
- .owner = THIS_MODULE,
- .name = DRIVER_NAME,
- },
-};
-
-module_platform_driver(wm8505fb_driver);
-
-MODULE_AUTHOR("Ed Spiridonov <edo.rus@gmail.com>");
-MODULE_DESCRIPTION("Framebuffer driver for WMT WM8505");
-MODULE_LICENSE("GPL");