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Diffstat (limited to 'drivers/video/xilinxfb.c')
-rw-r--r--drivers/video/xilinxfb.c540
1 files changed, 0 insertions, 540 deletions
diff --git a/drivers/video/xilinxfb.c b/drivers/video/xilinxfb.c
deleted file mode 100644
index 68bd23476c6..00000000000
--- a/drivers/video/xilinxfb.c
+++ /dev/null
@@ -1,540 +0,0 @@
-/*
- * Xilinx TFT frame buffer driver
- *
- * Author: MontaVista Software, Inc.
- * source@mvista.com
- *
- * 2002-2007 (c) MontaVista Software, Inc.
- * 2007 (c) Secret Lab Technologies, Ltd.
- * 2009 (c) Xilinx 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/device.h>
-#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/of_device.h>
-#include <linux/of_platform.h>
-#include <linux/of_address.h>
-#include <linux/io.h>
-#include <linux/xilinxfb.h>
-#include <linux/slab.h>
-
-#ifdef CONFIG_PPC_DCR
-#include <asm/dcr.h>
-#endif
-
-#define DRIVER_NAME "xilinxfb"
-
-
-/*
- * 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.
- *
- * In case of direct PLB access the second control register will be at
- * an offset of 4 as compared to the DCR access where the offset is 1
- * i.e. REG_CTRL. So this is taken care in the function
- * xilinx_fb_out_be32 where it left shifts the offset 2 times in case of
- * direct PLB access.
- */
-#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 RED_SHIFT 16
-#define GREEN_SHIFT 8
-#define BLUE_SHIFT 0
-
-#define PALETTE_ENTRIES_NO 16 /* passed to fb_alloc_cmap() */
-
-/*
- * Default xilinxfb configuration
- */
-static struct xilinxfb_platform_data xilinx_fb_default_pdata = {
- .xres = 640,
- .yres = 480,
- .xvirt = 1024,
- .yvirt = 480,
-};
-
-/*
- * 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,
- .accel = FB_ACCEL_NONE
-};
-
-static struct fb_var_screeninfo xilinx_fb_var = {
- .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
-};
-
-
-#define PLB_ACCESS_FLAG 0x1 /* 1 = PLB, 0 = DCR */
-
-struct xilinxfb_drvdata {
-
- struct fb_info info; /* FB driver info record */
-
- phys_addr_t regs_phys; /* phys. address of the control
- registers */
- void __iomem *regs; /* virt. address of the control
- registers */
-#ifdef CONFIG_PPC_DCR
- dcr_host_t dcr_host;
- unsigned int dcr_len;
-#endif
- void *fb_virt; /* virt. address of the frame buffer */
- dma_addr_t fb_phys; /* phys. address of the frame buffer */
- int fb_alloced; /* Flag, was the fb memory alloced? */
-
- u8 flags; /* features of the driver */
-
- 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 XPS TFT Controller can be accessed through PLB or DCR interface.
- * To perform the read/write on the registers we need to check on
- * which bus its connected and call the appropriate write API.
- */
-static void xilinx_fb_out_be32(struct xilinxfb_drvdata *drvdata, u32 offset,
- u32 val)
-{
- if (drvdata->flags & PLB_ACCESS_FLAG)
- out_be32(drvdata->regs + (offset << 2), val);
-#ifdef CONFIG_PPC_DCR
- else
- dcr_write(drvdata->dcr_host, offset, val);
-#endif
-}
-
-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,
-};
-
-/* ---------------------------------------------------------------------
- * Bus independent setup/teardown
- */
-
-static int xilinxfb_assign(struct device *dev,
- struct xilinxfb_drvdata *drvdata,
- unsigned long physaddr,
- struct xilinxfb_platform_data *pdata)
-{
- int rc;
- int fbsize = pdata->xvirt * pdata->yvirt * BYTES_PER_PIXEL;
-
- if (drvdata->flags & PLB_ACCESS_FLAG) {
- /*
- * Map the control registers in if the controller
- * is on direct PLB interface.
- */
- if (!request_mem_region(physaddr, 8, DRIVER_NAME)) {
- dev_err(dev, "Couldn't lock memory region at 0x%08lX\n",
- physaddr);
- rc = -ENODEV;
- goto err_region;
- }
-
- drvdata->regs_phys = physaddr;
- drvdata->regs = ioremap(physaddr, 8);
- if (!drvdata->regs) {
- dev_err(dev, "Couldn't lock memory region at 0x%08lX\n",
- physaddr);
- rc = -ENODEV;
- goto err_map;
- }
- }
-
- /* Allocate the framebuffer memory */
- if (pdata->fb_phys) {
- drvdata->fb_phys = pdata->fb_phys;
- drvdata->fb_virt = ioremap(pdata->fb_phys, fbsize);
- } else {
- drvdata->fb_alloced = 1;
- drvdata->fb_virt = dma_alloc_coherent(dev, PAGE_ALIGN(fbsize),
- &drvdata->fb_phys, GFP_KERNEL);
- }
-
- if (!drvdata->fb_virt) {
- dev_err(dev, "Could not allocate frame buffer memory\n");
- rc = -ENOMEM;
- if (drvdata->flags & PLB_ACCESS_FLAG)
- goto err_fbmem;
- else
- goto err_region;
- }
-
- /* Clear (turn to black) the framebuffer */
- memset_io((void __iomem *)drvdata->fb_virt, 0, fbsize);
-
- /* 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->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 = (void __iomem *)drvdata->fb_virt;
- drvdata->info.fbops = &xilinxfb_ops;
- drvdata->info.fix = xilinx_fb_fix;
- drvdata->info.fix.smem_start = drvdata->fb_phys;
- drvdata->info.fix.smem_len = fbsize;
- drvdata->info.fix.line_length = pdata->xvirt * BYTES_PER_PIXEL;
-
- drvdata->info.pseudo_palette = drvdata->pseudo_palette;
- drvdata->info.flags = FBINFO_DEFAULT;
- drvdata->info.var = xilinx_fb_var;
- drvdata->info.var.height = pdata->screen_height_mm;
- drvdata->info.var.width = pdata->screen_width_mm;
- drvdata->info.var.xres = pdata->xres;
- drvdata->info.var.yres = pdata->yres;
- drvdata->info.var.xres_virtual = pdata->xvirt;
- drvdata->info.var.yres_virtual = pdata->yvirt;
-
- /* Allocate a colour map */
- rc = fb_alloc_cmap(&drvdata->info.cmap, PALETTE_ENTRIES_NO, 0);
- if (rc) {
- dev_err(dev, "Fail to allocate colormap (%d entries)\n",
- PALETTE_ENTRIES_NO);
- goto err_cmap;
- }
-
- /* Register new frame buffer */
- rc = register_framebuffer(&drvdata->info);
- if (rc) {
- dev_err(dev, "Could not register frame buffer\n");
- goto err_regfb;
- }
-
- if (drvdata->flags & PLB_ACCESS_FLAG) {
- /* Put a banner in the log (for DEBUG) */
- dev_dbg(dev, "regs: phys=%lx, virt=%p\n", physaddr,
- drvdata->regs);
- }
- /* Put a banner in the log (for DEBUG) */
- dev_dbg(dev, "fb: phys=%llx, virt=%p, size=%x\n",
- (unsigned long long)drvdata->fb_phys, drvdata->fb_virt, fbsize);
-
- return 0; /* success */
-
-err_regfb:
- fb_dealloc_cmap(&drvdata->info.cmap);
-
-err_cmap:
- if (drvdata->fb_alloced)
- dma_free_coherent(dev, PAGE_ALIGN(fbsize), drvdata->fb_virt,
- drvdata->fb_phys);
- else
- iounmap(drvdata->fb_virt);
-
- /* Turn off the display */
- xilinx_fb_out_be32(drvdata, REG_CTRL, 0);
-
-err_fbmem:
- if (drvdata->flags & PLB_ACCESS_FLAG)
- iounmap(drvdata->regs);
-
-err_map:
- if (drvdata->flags & PLB_ACCESS_FLAG)
- release_mem_region(physaddr, 8);
-
-err_region:
- kfree(drvdata);
- dev_set_drvdata(dev, NULL);
-
- return rc;
-}
-
-static int xilinxfb_release(struct device *dev)
-{
- struct xilinxfb_drvdata *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);
-
- if (drvdata->fb_alloced)
- dma_free_coherent(dev, PAGE_ALIGN(drvdata->info.fix.smem_len),
- drvdata->fb_virt, drvdata->fb_phys);
- else
- iounmap(drvdata->fb_virt);
-
- /* Turn off the display */
- xilinx_fb_out_be32(drvdata, REG_CTRL, 0);
-
- /* Release the resources, as allocated based on interface */
- if (drvdata->flags & PLB_ACCESS_FLAG) {
- iounmap(drvdata->regs);
- release_mem_region(drvdata->regs_phys, 8);
- }
-#ifdef CONFIG_PPC_DCR
- else
- dcr_unmap(drvdata->dcr_host, drvdata->dcr_len);
-#endif
-
- kfree(drvdata);
- dev_set_drvdata(dev, NULL);
-
- return 0;
-}
-
-/* ---------------------------------------------------------------------
- * OF bus binding
- */
-
-static int __devinit
-xilinxfb_of_probe(struct platform_device *op, const struct of_device_id *match)
-{
- const u32 *prop;
- u32 *p;
- u32 tft_access;
- struct xilinxfb_platform_data pdata;
- struct resource res;
- int size, rc;
- struct xilinxfb_drvdata *drvdata;
-
- /* Copy with the default pdata (not a ptr reference!) */
- pdata = xilinx_fb_default_pdata;
-
- dev_dbg(&op->dev, "xilinxfb_of_probe(%p, %p)\n", op, match);
-
- /* Allocate the driver data region */
- drvdata = kzalloc(sizeof(*drvdata), GFP_KERNEL);
- if (!drvdata) {
- dev_err(&op->dev, "Couldn't allocate device private record\n");
- return -ENOMEM;
- }
-
- /*
- * To check whether the core is connected directly to DCR or PLB
- * interface and initialize the tft_access accordingly.
- */
- p = (u32 *)of_get_property(op->dev.of_node, "xlnx,dcr-splb-slave-if", NULL);
- tft_access = p ? *p : 0;
-
- /*
- * Fill the resource structure if its direct PLB interface
- * otherwise fill the dcr_host structure.
- */
- if (tft_access) {
- drvdata->flags |= PLB_ACCESS_FLAG;
- rc = of_address_to_resource(op->dev.of_node, 0, &res);
- if (rc) {
- dev_err(&op->dev, "invalid address\n");
- goto err;
- }
- }
-#ifdef CONFIG_PPC_DCR
- else {
- int start;
- res.start = 0;
- start = dcr_resource_start(op->dev.of_node, 0);
- drvdata->dcr_len = dcr_resource_len(op->dev.of_node, 0);
- drvdata->dcr_host = dcr_map(op->dev.of_node, start, drvdata->dcr_len);
- if (!DCR_MAP_OK(drvdata->dcr_host)) {
- dev_err(&op->dev, "invalid DCR address\n");
- goto err;
- }
- }
-#endif
-
- prop = of_get_property(op->dev.of_node, "phys-size", &size);
- if ((prop) && (size >= sizeof(u32)*2)) {
- pdata.screen_width_mm = prop[0];
- pdata.screen_height_mm = prop[1];
- }
-
- prop = of_get_property(op->dev.of_node, "resolution", &size);
- if ((prop) && (size >= sizeof(u32)*2)) {
- pdata.xres = prop[0];
- pdata.yres = prop[1];
- }
-
- prop = of_get_property(op->dev.of_node, "virtual-resolution", &size);
- if ((prop) && (size >= sizeof(u32)*2)) {
- pdata.xvirt = prop[0];
- pdata.yvirt = prop[1];
- }
-
- if (of_find_property(op->dev.of_node, "rotate-display", NULL))
- pdata.rotate_screen = 1;
-
- dev_set_drvdata(&op->dev, drvdata);
- return xilinxfb_assign(&op->dev, drvdata, res.start, &pdata);
-
- err:
- kfree(drvdata);
- return -ENODEV;
-}
-
-static int __devexit xilinxfb_of_remove(struct platform_device *op)
-{
- return xilinxfb_release(&op->dev);
-}
-
-/* Match table for of_platform binding */
-static struct of_device_id xilinxfb_of_match[] __devinitdata = {
- { .compatible = "xlnx,xps-tft-1.00.a", },
- { .compatible = "xlnx,xps-tft-2.00.a", },
- { .compatible = "xlnx,xps-tft-2.01.a", },
- { .compatible = "xlnx,plb-tft-cntlr-ref-1.00.a", },
- { .compatible = "xlnx,plb-dvi-cntlr-ref-1.00.c", },
- {},
-};
-MODULE_DEVICE_TABLE(of, xilinxfb_of_match);
-
-static struct of_platform_driver xilinxfb_of_driver = {
- .probe = xilinxfb_of_probe,
- .remove = __devexit_p(xilinxfb_of_remove),
- .driver = {
- .name = DRIVER_NAME,
- .owner = THIS_MODULE,
- .of_match_table = xilinxfb_of_match,
- },
-};
-
-
-/* ---------------------------------------------------------------------
- * Module setup and teardown
- */
-
-static int __init
-xilinxfb_init(void)
-{
- return of_register_platform_driver(&xilinxfb_of_driver);
-}
-
-static void __exit
-xilinxfb_cleanup(void)
-{
- of_unregister_platform_driver(&xilinxfb_of_driver);
-}
-
-module_init(xilinxfb_init);
-module_exit(xilinxfb_cleanup);
-
-MODULE_AUTHOR("MontaVista Software, Inc. <source@mvista.com>");
-MODULE_DESCRIPTION("Xilinx TFT frame buffer driver");
-MODULE_LICENSE("GPL");
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