diff options
Diffstat (limited to 'drivers/video/wm8505fb.c')
| -rw-r--r-- | drivers/video/wm8505fb.c | 411 |
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"); |
