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Diffstat (limited to 'drivers/video/xilinxfb.c')
-rw-r--r--drivers/video/xilinxfb.c376
1 files changed, 0 insertions, 376 deletions
diff --git a/drivers/video/xilinxfb.c b/drivers/video/xilinxfb.c
deleted file mode 100644
index 6ef9733a18d..00000000000
--- a/drivers/video/xilinxfb.c
+++ /dev/null
@@ -1,376 +0,0 @@
-/*
- * xilinxfb.c
- *
- * Xilinx TFT LCD frame buffer driver
- *
- * Author: MontaVista Software, Inc.
- * source@mvista.com
- *
- * 2002-2007 (c) MontaVista Software, Inc. This file is licensed under the
- * terms of the GNU General Public License version 2. This program is licensed
- * "as is" without any warranty of any kind, whether express or implied.
- */
-
-/*
- * This driver was based on au1100fb.c by MontaVista rewritten for 2.6
- * by Embedded Alley Solutions <source@embeddedalley.com>, which in turn
- * was based on skeletonfb.c, Skeleton for a frame buffer device by
- * Geert Uytterhoeven.
- */
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/version.h>
-#include <linux/errno.h>
-#include <linux/string.h>
-#include <linux/mm.h>
-#include <linux/fb.h>
-#include <linux/init.h>
-#include <linux/dma-mapping.h>
-#include <linux/platform_device.h>
-
-#include <asm/io.h>
-#include <syslib/virtex_devices.h>
-
-#define DRIVER_NAME "xilinxfb"
-#define DRIVER_DESCRIPTION "Xilinx TFT LCD frame buffer driver"
-
-/*
- * Xilinx calls it "PLB TFT LCD Controller" though it can also be used for
- * the VGA port on the Xilinx ML40x board. This is a hardware display controller
- * for a 640x480 resolution TFT or VGA screen.
- *
- * The interface to the framebuffer is nice and simple. There are two
- * control registers. The first tells the LCD interface where in memory
- * the frame buffer is (only the 11 most significant bits are used, so
- * don't start thinking about scrolling). The second allows the LCD to
- * be turned on or off as well as rotated 180 degrees.
- */
-#define NUM_REGS 2
-#define REG_FB_ADDR 0
-#define REG_CTRL 1
-#define REG_CTRL_ENABLE 0x0001
-#define REG_CTRL_ROTATE 0x0002
-
-/*
- * The hardware only handles a single mode: 640x480 24 bit true
- * color. Each pixel gets a word (32 bits) of memory. Within each word,
- * the 8 most significant bits are ignored, the next 8 bits are the red
- * level, the next 8 bits are the green level and the 8 least
- * significant bits are the blue level. Each row of the LCD uses 1024
- * words, but only the first 640 pixels are displayed with the other 384
- * words being ignored. There are 480 rows.
- */
-#define BYTES_PER_PIXEL 4
-#define BITS_PER_PIXEL (BYTES_PER_PIXEL * 8)
-#define XRES 640
-#define YRES 480
-#define XRES_VIRTUAL 1024
-#define YRES_VIRTUAL YRES
-#define LINE_LENGTH (XRES_VIRTUAL * BYTES_PER_PIXEL)
-#define FB_SIZE (YRES_VIRTUAL * LINE_LENGTH)
-
-#define RED_SHIFT 16
-#define GREEN_SHIFT 8
-#define BLUE_SHIFT 0
-
-#define PALETTE_ENTRIES_NO 16 /* passed to fb_alloc_cmap() */
-
-/*
- * Here are the default fb_fix_screeninfo and fb_var_screeninfo structures
- */
-static struct fb_fix_screeninfo xilinx_fb_fix = {
- .id = "Xilinx",
- .type = FB_TYPE_PACKED_PIXELS,
- .visual = FB_VISUAL_TRUECOLOR,
- .smem_len = FB_SIZE,
- .line_length = LINE_LENGTH,
- .accel = FB_ACCEL_NONE
-};
-
-static struct fb_var_screeninfo xilinx_fb_var = {
- .xres = XRES,
- .yres = YRES,
- .xres_virtual = XRES_VIRTUAL,
- .yres_virtual = YRES_VIRTUAL,
-
- .bits_per_pixel = BITS_PER_PIXEL,
-
- .red = { RED_SHIFT, 8, 0 },
- .green = { GREEN_SHIFT, 8, 0 },
- .blue = { BLUE_SHIFT, 8, 0 },
- .transp = { 0, 0, 0 },
-
- .activate = FB_ACTIVATE_NOW
-};
-
-struct xilinxfb_drvdata {
-
- struct fb_info info; /* FB driver info record */
-
- u32 regs_phys; /* phys. address of the control registers */
- u32 __iomem *regs; /* virt. address of the control registers */
-
- unsigned char __iomem *fb_virt; /* virt. address of the frame buffer */
- dma_addr_t fb_phys; /* phys. address of the frame buffer */
-
- u32 reg_ctrl_default;
-
- u32 pseudo_palette[PALETTE_ENTRIES_NO];
- /* Fake palette of 16 colors */
-};
-
-#define to_xilinxfb_drvdata(_info) \
- container_of(_info, struct xilinxfb_drvdata, info)
-
-/*
- * The LCD controller has DCR interface to its registers, but all
- * the boards and configurations the driver has been tested with
- * use opb2dcr bridge. So the registers are seen as memory mapped.
- * This macro is to make it simple to add the direct DCR access
- * when it's needed.
- */
-#define xilinx_fb_out_be32(driverdata, offset, val) \
- out_be32(driverdata->regs + offset, val)
-
-static int
-xilinx_fb_setcolreg(unsigned regno, unsigned red, unsigned green, unsigned blue,
- unsigned transp, struct fb_info *fbi)
-{
- u32 *palette = fbi->pseudo_palette;
-
- if (regno >= PALETTE_ENTRIES_NO)
- return -EINVAL;
-
- if (fbi->var.grayscale) {
- /* Convert color to grayscale.
- * grayscale = 0.30*R + 0.59*G + 0.11*B */
- red = green = blue =
- (red * 77 + green * 151 + blue * 28 + 127) >> 8;
- }
-
- /* fbi->fix.visual is always FB_VISUAL_TRUECOLOR */
-
- /* We only handle 8 bits of each color. */
- red >>= 8;
- green >>= 8;
- blue >>= 8;
- palette[regno] = (red << RED_SHIFT) | (green << GREEN_SHIFT) |
- (blue << BLUE_SHIFT);
-
- return 0;
-}
-
-static int
-xilinx_fb_blank(int blank_mode, struct fb_info *fbi)
-{
- struct xilinxfb_drvdata *drvdata = to_xilinxfb_drvdata(fbi);
-
- switch (blank_mode) {
- case FB_BLANK_UNBLANK:
- /* turn on panel */
- xilinx_fb_out_be32(drvdata, REG_CTRL, drvdata->reg_ctrl_default);
- break;
-
- case FB_BLANK_NORMAL:
- case FB_BLANK_VSYNC_SUSPEND:
- case FB_BLANK_HSYNC_SUSPEND:
- case FB_BLANK_POWERDOWN:
- /* turn off panel */
- xilinx_fb_out_be32(drvdata, REG_CTRL, 0);
- default:
- break;
-
- }
- return 0; /* success */
-}
-
-static struct fb_ops xilinxfb_ops =
-{
- .owner = THIS_MODULE,
- .fb_setcolreg = xilinx_fb_setcolreg,
- .fb_blank = xilinx_fb_blank,
- .fb_fillrect = cfb_fillrect,
- .fb_copyarea = cfb_copyarea,
- .fb_imageblit = cfb_imageblit,
-};
-
-/* === The device driver === */
-
-static int
-xilinxfb_drv_probe(struct device *dev)
-{
- struct platform_device *pdev;
- struct xilinxfb_platform_data *pdata;
- struct xilinxfb_drvdata *drvdata;
- struct resource *regs_res;
- int retval;
-
- if (!dev)
- return -EINVAL;
-
- pdev = to_platform_device(dev);
- pdata = pdev->dev.platform_data;
-
- drvdata = kzalloc(sizeof(*drvdata), GFP_KERNEL);
- if (!drvdata) {
- printk(KERN_ERR "Couldn't allocate device private record\n");
- return -ENOMEM;
- }
- dev_set_drvdata(dev, drvdata);
-
- /* Map the control registers in */
- regs_res = platform_get_resource(pdev, IORESOURCE_IO, 0);
- if (!regs_res || (regs_res->end - regs_res->start + 1 < 8)) {
- printk(KERN_ERR "Couldn't get registers resource\n");
- retval = -EFAULT;
- goto failed1;
- }
-
- if (!request_mem_region(regs_res->start, 8, DRIVER_NAME)) {
- printk(KERN_ERR
- "Couldn't lock memory region at 0x%08X\n",
- regs_res->start);
- retval = -EBUSY;
- goto failed1;
- }
- drvdata->regs = (u32 __iomem*) ioremap(regs_res->start, 8);
- drvdata->regs_phys = regs_res->start;
-
- /* Allocate the framebuffer memory */
- drvdata->fb_virt = dma_alloc_coherent(dev, PAGE_ALIGN(FB_SIZE),
- &drvdata->fb_phys, GFP_KERNEL);
- if (!drvdata->fb_virt) {
- printk(KERN_ERR "Could not allocate frame buffer memory\n");
- retval = -ENOMEM;
- goto failed2;
- }
-
- /* Clear (turn to black) the framebuffer */
- memset_io((void *) drvdata->fb_virt, 0, FB_SIZE);
-
- /* Tell the hardware where the frame buffer is */
- xilinx_fb_out_be32(drvdata, REG_FB_ADDR, drvdata->fb_phys);
-
- /* Turn on the display */
- drvdata->reg_ctrl_default = REG_CTRL_ENABLE;
- if (pdata && pdata->rotate_screen)
- drvdata->reg_ctrl_default |= REG_CTRL_ROTATE;
- xilinx_fb_out_be32(drvdata, REG_CTRL, drvdata->reg_ctrl_default);
-
- /* Fill struct fb_info */
- drvdata->info.device = dev;
- drvdata->info.screen_base = drvdata->fb_virt;
- drvdata->info.fbops = &xilinxfb_ops;
- drvdata->info.fix = xilinx_fb_fix;
- drvdata->info.fix.smem_start = drvdata->fb_phys;
- drvdata->info.pseudo_palette = drvdata->pseudo_palette;
-
- if (fb_alloc_cmap(&drvdata->info.cmap, PALETTE_ENTRIES_NO, 0) < 0) {
- printk(KERN_ERR "Fail to allocate colormap (%d entries)\n",
- PALETTE_ENTRIES_NO);
- retval = -EFAULT;
- goto failed3;
- }
-
- drvdata->info.flags = FBINFO_DEFAULT;
- if (pdata) {
- xilinx_fb_var.height = pdata->screen_height_mm;
- xilinx_fb_var.width = pdata->screen_width_mm;
- }
- drvdata->info.var = xilinx_fb_var;
-
- /* Register new frame buffer */
- if (register_framebuffer(&drvdata->info) < 0) {
- printk(KERN_ERR "Could not register frame buffer\n");
- retval = -EINVAL;
- goto failed4;
- }
-
- return 0; /* success */
-
-failed4:
- fb_dealloc_cmap(&drvdata->info.cmap);
-
-failed3:
- dma_free_coherent(dev, PAGE_ALIGN(FB_SIZE), drvdata->fb_virt,
- drvdata->fb_phys);
-
- /* Turn off the display */
- xilinx_fb_out_be32(drvdata, REG_CTRL, 0);
- iounmap(drvdata->regs);
-
-failed2:
- release_mem_region(regs_res->start, 8);
-
-failed1:
- kfree(drvdata);
- dev_set_drvdata(dev, NULL);
-
- return retval;
-}
-
-static int
-xilinxfb_drv_remove(struct device *dev)
-{
- struct xilinxfb_drvdata *drvdata;
-
- if (!dev)
- return -ENODEV;
-
- drvdata = (struct xilinxfb_drvdata *) dev_get_drvdata(dev);
-
-#if !defined(CONFIG_FRAMEBUFFER_CONSOLE) && defined(CONFIG_LOGO)
- xilinx_fb_blank(VESA_POWERDOWN, &drvdata->info);
-#endif
-
- unregister_framebuffer(&drvdata->info);
-
- fb_dealloc_cmap(&drvdata->info.cmap);
-
- dma_free_coherent(dev, PAGE_ALIGN(FB_SIZE), drvdata->fb_virt,
- drvdata->fb_phys);
-
- /* Turn off the display */
- xilinx_fb_out_be32(drvdata, REG_CTRL, 0);
- iounmap(drvdata->regs);
-
- release_mem_region(drvdata->regs_phys, 8);
-
- kfree(drvdata);
- dev_set_drvdata(dev, NULL);
-
- return 0;
-}
-
-
-static struct device_driver xilinxfb_driver = {
- .name = DRIVER_NAME,
- .bus = &platform_bus_type,
-
- .probe = xilinxfb_drv_probe,
- .remove = xilinxfb_drv_remove
-};
-
-static int __init
-xilinxfb_init(void)
-{
- /*
- * No kernel boot options used,
- * so we just need to register the driver
- */
- return driver_register(&xilinxfb_driver);
-}
-
-static void __exit
-xilinxfb_cleanup(void)
-{
- driver_unregister(&xilinxfb_driver);
-}
-
-module_init(xilinxfb_init);
-module_exit(xilinxfb_cleanup);
-
-MODULE_AUTHOR("MontaVista Software, Inc. <source@mvista.com>");
-MODULE_DESCRIPTION(DRIVER_DESCRIPTION);
-MODULE_LICENSE("GPL");
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