Andrei Konovalov | 147394c | 2007-05-08 00:40:18 -0700 | [diff] [blame] | 1 | /* |
| 2 | * xilinxfb.c |
| 3 | * |
| 4 | * Xilinx TFT LCD frame buffer driver |
| 5 | * |
| 6 | * Author: MontaVista Software, Inc. |
| 7 | * source@mvista.com |
| 8 | * |
| 9 | * 2002-2007 (c) MontaVista Software, Inc. This file is licensed under the |
| 10 | * terms of the GNU General Public License version 2. This program is licensed |
| 11 | * "as is" without any warranty of any kind, whether express or implied. |
| 12 | */ |
| 13 | |
| 14 | /* |
| 15 | * This driver was based on au1100fb.c by MontaVista rewritten for 2.6 |
| 16 | * by Embedded Alley Solutions <source@embeddedalley.com>, which in turn |
| 17 | * was based on skeletonfb.c, Skeleton for a frame buffer device by |
| 18 | * Geert Uytterhoeven. |
| 19 | */ |
| 20 | |
Grant Likely | 3cb3ec2 | 2007-10-04 10:48:36 -0600 | [diff] [blame] | 21 | #include <linux/device.h> |
Andrei Konovalov | 147394c | 2007-05-08 00:40:18 -0700 | [diff] [blame] | 22 | #include <linux/module.h> |
| 23 | #include <linux/kernel.h> |
| 24 | #include <linux/version.h> |
| 25 | #include <linux/errno.h> |
| 26 | #include <linux/string.h> |
| 27 | #include <linux/mm.h> |
| 28 | #include <linux/fb.h> |
| 29 | #include <linux/init.h> |
| 30 | #include <linux/dma-mapping.h> |
| 31 | #include <linux/platform_device.h> |
| 32 | |
| 33 | #include <asm/io.h> |
Grant Likely | dc8afdc | 2007-10-01 07:47:00 +1000 | [diff] [blame] | 34 | #include <linux/xilinxfb.h> |
Andrei Konovalov | 147394c | 2007-05-08 00:40:18 -0700 | [diff] [blame] | 35 | |
| 36 | #define DRIVER_NAME "xilinxfb" |
| 37 | #define DRIVER_DESCRIPTION "Xilinx TFT LCD frame buffer driver" |
| 38 | |
| 39 | /* |
| 40 | * Xilinx calls it "PLB TFT LCD Controller" though it can also be used for |
| 41 | * the VGA port on the Xilinx ML40x board. This is a hardware display controller |
| 42 | * for a 640x480 resolution TFT or VGA screen. |
| 43 | * |
| 44 | * The interface to the framebuffer is nice and simple. There are two |
| 45 | * control registers. The first tells the LCD interface where in memory |
| 46 | * the frame buffer is (only the 11 most significant bits are used, so |
| 47 | * don't start thinking about scrolling). The second allows the LCD to |
| 48 | * be turned on or off as well as rotated 180 degrees. |
| 49 | */ |
| 50 | #define NUM_REGS 2 |
| 51 | #define REG_FB_ADDR 0 |
| 52 | #define REG_CTRL 1 |
| 53 | #define REG_CTRL_ENABLE 0x0001 |
| 54 | #define REG_CTRL_ROTATE 0x0002 |
| 55 | |
| 56 | /* |
| 57 | * The hardware only handles a single mode: 640x480 24 bit true |
| 58 | * color. Each pixel gets a word (32 bits) of memory. Within each word, |
| 59 | * the 8 most significant bits are ignored, the next 8 bits are the red |
| 60 | * level, the next 8 bits are the green level and the 8 least |
| 61 | * significant bits are the blue level. Each row of the LCD uses 1024 |
| 62 | * words, but only the first 640 pixels are displayed with the other 384 |
| 63 | * words being ignored. There are 480 rows. |
| 64 | */ |
| 65 | #define BYTES_PER_PIXEL 4 |
| 66 | #define BITS_PER_PIXEL (BYTES_PER_PIXEL * 8) |
| 67 | #define XRES 640 |
| 68 | #define YRES 480 |
| 69 | #define XRES_VIRTUAL 1024 |
| 70 | #define YRES_VIRTUAL YRES |
| 71 | #define LINE_LENGTH (XRES_VIRTUAL * BYTES_PER_PIXEL) |
| 72 | #define FB_SIZE (YRES_VIRTUAL * LINE_LENGTH) |
| 73 | |
| 74 | #define RED_SHIFT 16 |
| 75 | #define GREEN_SHIFT 8 |
| 76 | #define BLUE_SHIFT 0 |
| 77 | |
| 78 | #define PALETTE_ENTRIES_NO 16 /* passed to fb_alloc_cmap() */ |
| 79 | |
| 80 | /* |
| 81 | * Here are the default fb_fix_screeninfo and fb_var_screeninfo structures |
| 82 | */ |
Grant Likely | 3f5b85d | 2007-07-31 00:37:38 -0700 | [diff] [blame] | 83 | static struct fb_fix_screeninfo xilinx_fb_fix = { |
Andrei Konovalov | 147394c | 2007-05-08 00:40:18 -0700 | [diff] [blame] | 84 | .id = "Xilinx", |
| 85 | .type = FB_TYPE_PACKED_PIXELS, |
| 86 | .visual = FB_VISUAL_TRUECOLOR, |
| 87 | .smem_len = FB_SIZE, |
| 88 | .line_length = LINE_LENGTH, |
| 89 | .accel = FB_ACCEL_NONE |
| 90 | }; |
| 91 | |
Grant Likely | 3f5b85d | 2007-07-31 00:37:38 -0700 | [diff] [blame] | 92 | static struct fb_var_screeninfo xilinx_fb_var = { |
Andrei Konovalov | 147394c | 2007-05-08 00:40:18 -0700 | [diff] [blame] | 93 | .xres = XRES, |
| 94 | .yres = YRES, |
| 95 | .xres_virtual = XRES_VIRTUAL, |
| 96 | .yres_virtual = YRES_VIRTUAL, |
| 97 | |
| 98 | .bits_per_pixel = BITS_PER_PIXEL, |
| 99 | |
| 100 | .red = { RED_SHIFT, 8, 0 }, |
| 101 | .green = { GREEN_SHIFT, 8, 0 }, |
| 102 | .blue = { BLUE_SHIFT, 8, 0 }, |
| 103 | .transp = { 0, 0, 0 }, |
| 104 | |
| 105 | .activate = FB_ACTIVATE_NOW |
| 106 | }; |
| 107 | |
| 108 | struct xilinxfb_drvdata { |
| 109 | |
| 110 | struct fb_info info; /* FB driver info record */ |
| 111 | |
| 112 | u32 regs_phys; /* phys. address of the control registers */ |
| 113 | u32 __iomem *regs; /* virt. address of the control registers */ |
| 114 | |
| 115 | unsigned char __iomem *fb_virt; /* virt. address of the frame buffer */ |
| 116 | dma_addr_t fb_phys; /* phys. address of the frame buffer */ |
| 117 | |
| 118 | u32 reg_ctrl_default; |
| 119 | |
| 120 | u32 pseudo_palette[PALETTE_ENTRIES_NO]; |
| 121 | /* Fake palette of 16 colors */ |
| 122 | }; |
| 123 | |
| 124 | #define to_xilinxfb_drvdata(_info) \ |
| 125 | container_of(_info, struct xilinxfb_drvdata, info) |
| 126 | |
| 127 | /* |
| 128 | * The LCD controller has DCR interface to its registers, but all |
| 129 | * the boards and configurations the driver has been tested with |
| 130 | * use opb2dcr bridge. So the registers are seen as memory mapped. |
| 131 | * This macro is to make it simple to add the direct DCR access |
| 132 | * when it's needed. |
| 133 | */ |
| 134 | #define xilinx_fb_out_be32(driverdata, offset, val) \ |
| 135 | out_be32(driverdata->regs + offset, val) |
| 136 | |
| 137 | static int |
| 138 | xilinx_fb_setcolreg(unsigned regno, unsigned red, unsigned green, unsigned blue, |
| 139 | unsigned transp, struct fb_info *fbi) |
| 140 | { |
| 141 | u32 *palette = fbi->pseudo_palette; |
| 142 | |
| 143 | if (regno >= PALETTE_ENTRIES_NO) |
| 144 | return -EINVAL; |
| 145 | |
| 146 | if (fbi->var.grayscale) { |
| 147 | /* Convert color to grayscale. |
| 148 | * grayscale = 0.30*R + 0.59*G + 0.11*B */ |
| 149 | red = green = blue = |
| 150 | (red * 77 + green * 151 + blue * 28 + 127) >> 8; |
| 151 | } |
| 152 | |
| 153 | /* fbi->fix.visual is always FB_VISUAL_TRUECOLOR */ |
| 154 | |
| 155 | /* We only handle 8 bits of each color. */ |
| 156 | red >>= 8; |
| 157 | green >>= 8; |
| 158 | blue >>= 8; |
| 159 | palette[regno] = (red << RED_SHIFT) | (green << GREEN_SHIFT) | |
| 160 | (blue << BLUE_SHIFT); |
| 161 | |
| 162 | return 0; |
| 163 | } |
| 164 | |
| 165 | static int |
| 166 | xilinx_fb_blank(int blank_mode, struct fb_info *fbi) |
| 167 | { |
| 168 | struct xilinxfb_drvdata *drvdata = to_xilinxfb_drvdata(fbi); |
| 169 | |
| 170 | switch (blank_mode) { |
| 171 | case FB_BLANK_UNBLANK: |
| 172 | /* turn on panel */ |
| 173 | xilinx_fb_out_be32(drvdata, REG_CTRL, drvdata->reg_ctrl_default); |
| 174 | break; |
| 175 | |
| 176 | case FB_BLANK_NORMAL: |
| 177 | case FB_BLANK_VSYNC_SUSPEND: |
| 178 | case FB_BLANK_HSYNC_SUSPEND: |
| 179 | case FB_BLANK_POWERDOWN: |
| 180 | /* turn off panel */ |
| 181 | xilinx_fb_out_be32(drvdata, REG_CTRL, 0); |
| 182 | default: |
| 183 | break; |
| 184 | |
| 185 | } |
| 186 | return 0; /* success */ |
| 187 | } |
| 188 | |
| 189 | static struct fb_ops xilinxfb_ops = |
| 190 | { |
| 191 | .owner = THIS_MODULE, |
| 192 | .fb_setcolreg = xilinx_fb_setcolreg, |
| 193 | .fb_blank = xilinx_fb_blank, |
| 194 | .fb_fillrect = cfb_fillrect, |
| 195 | .fb_copyarea = cfb_copyarea, |
| 196 | .fb_imageblit = cfb_imageblit, |
| 197 | }; |
| 198 | |
Grant Likely | 2647762 | 2007-10-04 10:48:37 -0600 | [diff] [blame^] | 199 | /* --------------------------------------------------------------------- |
| 200 | * Bus independent setup/teardown |
| 201 | */ |
Andrei Konovalov | 147394c | 2007-05-08 00:40:18 -0700 | [diff] [blame] | 202 | |
Grant Likely | 2647762 | 2007-10-04 10:48:37 -0600 | [diff] [blame^] | 203 | static int xilinxfb_assign(struct device *dev, unsigned long physaddr, |
| 204 | int width_mm, int height_mm, int rotate) |
Andrei Konovalov | 147394c | 2007-05-08 00:40:18 -0700 | [diff] [blame] | 205 | { |
Andrei Konovalov | 147394c | 2007-05-08 00:40:18 -0700 | [diff] [blame] | 206 | struct xilinxfb_drvdata *drvdata; |
Grant Likely | 2647762 | 2007-10-04 10:48:37 -0600 | [diff] [blame^] | 207 | int rc; |
Andrei Konovalov | 147394c | 2007-05-08 00:40:18 -0700 | [diff] [blame] | 208 | |
Grant Likely | 2647762 | 2007-10-04 10:48:37 -0600 | [diff] [blame^] | 209 | /* Allocate the driver data region */ |
Andrei Konovalov | 147394c | 2007-05-08 00:40:18 -0700 | [diff] [blame] | 210 | drvdata = kzalloc(sizeof(*drvdata), GFP_KERNEL); |
| 211 | if (!drvdata) { |
Grant Likely | 3cb3ec2 | 2007-10-04 10:48:36 -0600 | [diff] [blame] | 212 | dev_err(dev, "Couldn't allocate device private record\n"); |
Andrei Konovalov | 147394c | 2007-05-08 00:40:18 -0700 | [diff] [blame] | 213 | return -ENOMEM; |
| 214 | } |
| 215 | dev_set_drvdata(dev, drvdata); |
| 216 | |
| 217 | /* Map the control registers in */ |
Grant Likely | 2647762 | 2007-10-04 10:48:37 -0600 | [diff] [blame^] | 218 | if (!request_mem_region(physaddr, 8, DRIVER_NAME)) { |
| 219 | dev_err(dev, "Couldn't lock memory region at 0x%08lX\n", |
| 220 | physaddr); |
| 221 | rc = -ENODEV; |
Grant Likely | 3fb99ce | 2007-10-04 10:48:37 -0600 | [diff] [blame] | 222 | goto err_region; |
Andrei Konovalov | 147394c | 2007-05-08 00:40:18 -0700 | [diff] [blame] | 223 | } |
Grant Likely | 2647762 | 2007-10-04 10:48:37 -0600 | [diff] [blame^] | 224 | drvdata->regs_phys = physaddr; |
| 225 | drvdata->regs = ioremap(physaddr, 8); |
| 226 | if (!drvdata->regs) { |
| 227 | dev_err(dev, "Couldn't lock memory region at 0x%08lX\n", |
| 228 | physaddr); |
| 229 | rc = -ENODEV; |
| 230 | goto err_map; |
Andrei Konovalov | 147394c | 2007-05-08 00:40:18 -0700 | [diff] [blame] | 231 | } |
Andrei Konovalov | 147394c | 2007-05-08 00:40:18 -0700 | [diff] [blame] | 232 | |
| 233 | /* Allocate the framebuffer memory */ |
| 234 | drvdata->fb_virt = dma_alloc_coherent(dev, PAGE_ALIGN(FB_SIZE), |
| 235 | &drvdata->fb_phys, GFP_KERNEL); |
| 236 | if (!drvdata->fb_virt) { |
Grant Likely | 3cb3ec2 | 2007-10-04 10:48:36 -0600 | [diff] [blame] | 237 | dev_err(dev, "Could not allocate frame buffer memory\n"); |
Grant Likely | 2647762 | 2007-10-04 10:48:37 -0600 | [diff] [blame^] | 238 | rc = -ENOMEM; |
Grant Likely | 3fb99ce | 2007-10-04 10:48:37 -0600 | [diff] [blame] | 239 | goto err_fbmem; |
Andrei Konovalov | 147394c | 2007-05-08 00:40:18 -0700 | [diff] [blame] | 240 | } |
| 241 | |
| 242 | /* Clear (turn to black) the framebuffer */ |
Grant Likely | 2647762 | 2007-10-04 10:48:37 -0600 | [diff] [blame^] | 243 | memset_io(drvdata->fb_virt, 0, FB_SIZE); |
Andrei Konovalov | 147394c | 2007-05-08 00:40:18 -0700 | [diff] [blame] | 244 | |
| 245 | /* Tell the hardware where the frame buffer is */ |
| 246 | xilinx_fb_out_be32(drvdata, REG_FB_ADDR, drvdata->fb_phys); |
| 247 | |
| 248 | /* Turn on the display */ |
Grant Likely | f53161d | 2007-07-31 00:37:39 -0700 | [diff] [blame] | 249 | drvdata->reg_ctrl_default = REG_CTRL_ENABLE; |
Grant Likely | 2647762 | 2007-10-04 10:48:37 -0600 | [diff] [blame^] | 250 | if (rotate) |
Grant Likely | f53161d | 2007-07-31 00:37:39 -0700 | [diff] [blame] | 251 | drvdata->reg_ctrl_default |= REG_CTRL_ROTATE; |
Andrei Konovalov | 147394c | 2007-05-08 00:40:18 -0700 | [diff] [blame] | 252 | xilinx_fb_out_be32(drvdata, REG_CTRL, drvdata->reg_ctrl_default); |
| 253 | |
| 254 | /* Fill struct fb_info */ |
| 255 | drvdata->info.device = dev; |
| 256 | drvdata->info.screen_base = drvdata->fb_virt; |
| 257 | drvdata->info.fbops = &xilinxfb_ops; |
| 258 | drvdata->info.fix = xilinx_fb_fix; |
| 259 | drvdata->info.fix.smem_start = drvdata->fb_phys; |
| 260 | drvdata->info.pseudo_palette = drvdata->pseudo_palette; |
Grant Likely | 2647762 | 2007-10-04 10:48:37 -0600 | [diff] [blame^] | 261 | drvdata->info.flags = FBINFO_DEFAULT; |
| 262 | drvdata->info.var = xilinx_fb_var; |
Andrei Konovalov | 147394c | 2007-05-08 00:40:18 -0700 | [diff] [blame] | 263 | |
Grant Likely | 2647762 | 2007-10-04 10:48:37 -0600 | [diff] [blame^] | 264 | xilinx_fb_var.height = height_mm; |
| 265 | xilinx_fb_var.width = width_mm; |
| 266 | |
| 267 | /* Allocate a colour map */ |
| 268 | rc = fb_alloc_cmap(&drvdata->info.cmap, PALETTE_ENTRIES_NO, 0); |
| 269 | if (rc) { |
Grant Likely | 3cb3ec2 | 2007-10-04 10:48:36 -0600 | [diff] [blame] | 270 | dev_err(dev, "Fail to allocate colormap (%d entries)\n", |
Andrei Konovalov | 147394c | 2007-05-08 00:40:18 -0700 | [diff] [blame] | 271 | PALETTE_ENTRIES_NO); |
Grant Likely | 3fb99ce | 2007-10-04 10:48:37 -0600 | [diff] [blame] | 272 | goto err_cmap; |
Andrei Konovalov | 147394c | 2007-05-08 00:40:18 -0700 | [diff] [blame] | 273 | } |
| 274 | |
Andrei Konovalov | 147394c | 2007-05-08 00:40:18 -0700 | [diff] [blame] | 275 | /* Register new frame buffer */ |
Grant Likely | 2647762 | 2007-10-04 10:48:37 -0600 | [diff] [blame^] | 276 | rc = register_framebuffer(&drvdata->info); |
| 277 | if (rc) { |
Grant Likely | 3cb3ec2 | 2007-10-04 10:48:36 -0600 | [diff] [blame] | 278 | dev_err(dev, "Could not register frame buffer\n"); |
Grant Likely | 3fb99ce | 2007-10-04 10:48:37 -0600 | [diff] [blame] | 279 | goto err_regfb; |
Andrei Konovalov | 147394c | 2007-05-08 00:40:18 -0700 | [diff] [blame] | 280 | } |
| 281 | |
Grant Likely | 258de4b | 2007-10-04 10:48:36 -0600 | [diff] [blame] | 282 | /* Put a banner in the log (for DEBUG) */ |
Grant Likely | 2647762 | 2007-10-04 10:48:37 -0600 | [diff] [blame^] | 283 | dev_dbg(dev, "regs: phys=%lx, virt=%p\n", physaddr, drvdata->regs); |
Grant Likely | 258de4b | 2007-10-04 10:48:36 -0600 | [diff] [blame] | 284 | dev_dbg(dev, "fb: phys=%p, virt=%p, size=%x\n", |
| 285 | (void*)drvdata->fb_phys, drvdata->fb_virt, FB_SIZE); |
Andrei Konovalov | 147394c | 2007-05-08 00:40:18 -0700 | [diff] [blame] | 286 | return 0; /* success */ |
| 287 | |
Grant Likely | 3fb99ce | 2007-10-04 10:48:37 -0600 | [diff] [blame] | 288 | err_regfb: |
Andrei Konovalov | 147394c | 2007-05-08 00:40:18 -0700 | [diff] [blame] | 289 | fb_dealloc_cmap(&drvdata->info.cmap); |
| 290 | |
Grant Likely | 3fb99ce | 2007-10-04 10:48:37 -0600 | [diff] [blame] | 291 | err_cmap: |
Andrei Konovalov | 147394c | 2007-05-08 00:40:18 -0700 | [diff] [blame] | 292 | dma_free_coherent(dev, PAGE_ALIGN(FB_SIZE), drvdata->fb_virt, |
| 293 | drvdata->fb_phys); |
Andrei Konovalov | 147394c | 2007-05-08 00:40:18 -0700 | [diff] [blame] | 294 | /* Turn off the display */ |
| 295 | xilinx_fb_out_be32(drvdata, REG_CTRL, 0); |
Andrei Konovalov | 147394c | 2007-05-08 00:40:18 -0700 | [diff] [blame] | 296 | |
Grant Likely | 3fb99ce | 2007-10-04 10:48:37 -0600 | [diff] [blame] | 297 | err_fbmem: |
Grant Likely | 2647762 | 2007-10-04 10:48:37 -0600 | [diff] [blame^] | 298 | iounmap(drvdata->regs); |
| 299 | |
| 300 | err_map: |
| 301 | release_mem_region(physaddr, 8); |
Andrei Konovalov | 147394c | 2007-05-08 00:40:18 -0700 | [diff] [blame] | 302 | |
Grant Likely | 3fb99ce | 2007-10-04 10:48:37 -0600 | [diff] [blame] | 303 | err_region: |
Andrei Konovalov | 147394c | 2007-05-08 00:40:18 -0700 | [diff] [blame] | 304 | kfree(drvdata); |
| 305 | dev_set_drvdata(dev, NULL); |
| 306 | |
Grant Likely | 2647762 | 2007-10-04 10:48:37 -0600 | [diff] [blame^] | 307 | return rc; |
Andrei Konovalov | 147394c | 2007-05-08 00:40:18 -0700 | [diff] [blame] | 308 | } |
| 309 | |
Grant Likely | 2647762 | 2007-10-04 10:48:37 -0600 | [diff] [blame^] | 310 | static int xilinxfb_release(struct device *dev) |
Andrei Konovalov | 147394c | 2007-05-08 00:40:18 -0700 | [diff] [blame] | 311 | { |
Grant Likely | 2647762 | 2007-10-04 10:48:37 -0600 | [diff] [blame^] | 312 | struct xilinxfb_drvdata *drvdata = dev_get_drvdata(dev); |
Andrei Konovalov | 147394c | 2007-05-08 00:40:18 -0700 | [diff] [blame] | 313 | |
| 314 | #if !defined(CONFIG_FRAMEBUFFER_CONSOLE) && defined(CONFIG_LOGO) |
| 315 | xilinx_fb_blank(VESA_POWERDOWN, &drvdata->info); |
| 316 | #endif |
| 317 | |
| 318 | unregister_framebuffer(&drvdata->info); |
| 319 | |
| 320 | fb_dealloc_cmap(&drvdata->info.cmap); |
| 321 | |
| 322 | dma_free_coherent(dev, PAGE_ALIGN(FB_SIZE), drvdata->fb_virt, |
| 323 | drvdata->fb_phys); |
| 324 | |
| 325 | /* Turn off the display */ |
| 326 | xilinx_fb_out_be32(drvdata, REG_CTRL, 0); |
| 327 | iounmap(drvdata->regs); |
| 328 | |
| 329 | release_mem_region(drvdata->regs_phys, 8); |
| 330 | |
| 331 | kfree(drvdata); |
| 332 | dev_set_drvdata(dev, NULL); |
| 333 | |
| 334 | return 0; |
| 335 | } |
| 336 | |
Grant Likely | 2647762 | 2007-10-04 10:48:37 -0600 | [diff] [blame^] | 337 | /* --------------------------------------------------------------------- |
| 338 | * Platform bus binding |
| 339 | */ |
| 340 | |
| 341 | static int |
| 342 | xilinxfb_drv_probe(struct device *dev) |
| 343 | { |
| 344 | struct platform_device *pdev; |
| 345 | struct xilinxfb_platform_data *pdata; |
| 346 | struct resource *res; |
| 347 | int width_mm; |
| 348 | int height_mm; |
| 349 | int rotate; |
| 350 | |
| 351 | pdev = to_platform_device(dev); |
| 352 | pdata = pdev->dev.platform_data; |
| 353 | if (!pdata) { |
| 354 | dev_err(dev, "Missing pdata structure\n"); |
| 355 | return -ENODEV; |
| 356 | } |
| 357 | |
| 358 | /* Find the registers address */ |
| 359 | res = platform_get_resource(pdev, IORESOURCE_IO, 0); |
| 360 | if (!res) { |
| 361 | dev_err(dev, "Couldn't get registers resource\n"); |
| 362 | return -ENODEV; |
| 363 | } |
| 364 | |
| 365 | height_mm = pdata->screen_height_mm; |
| 366 | width_mm = pdata->screen_width_mm; |
| 367 | rotate = pdata->rotate_screen ? 1 : 0; |
| 368 | |
| 369 | return xilinxfb_assign(dev, res->start, width_mm, height_mm, rotate); |
| 370 | } |
| 371 | |
| 372 | static int |
| 373 | xilinxfb_drv_remove(struct device *dev) |
| 374 | { |
| 375 | return xilinxfb_release(dev); |
| 376 | } |
| 377 | |
Andrei Konovalov | 147394c | 2007-05-08 00:40:18 -0700 | [diff] [blame] | 378 | |
| 379 | static struct device_driver xilinxfb_driver = { |
| 380 | .name = DRIVER_NAME, |
| 381 | .bus = &platform_bus_type, |
| 382 | |
| 383 | .probe = xilinxfb_drv_probe, |
| 384 | .remove = xilinxfb_drv_remove |
| 385 | }; |
| 386 | |
| 387 | static int __init |
| 388 | xilinxfb_init(void) |
| 389 | { |
| 390 | /* |
| 391 | * No kernel boot options used, |
| 392 | * so we just need to register the driver |
| 393 | */ |
| 394 | return driver_register(&xilinxfb_driver); |
| 395 | } |
| 396 | |
| 397 | static void __exit |
| 398 | xilinxfb_cleanup(void) |
| 399 | { |
| 400 | driver_unregister(&xilinxfb_driver); |
| 401 | } |
| 402 | |
| 403 | module_init(xilinxfb_init); |
| 404 | module_exit(xilinxfb_cleanup); |
| 405 | |
| 406 | MODULE_AUTHOR("MontaVista Software, Inc. <source@mvista.com>"); |
| 407 | MODULE_DESCRIPTION(DRIVER_DESCRIPTION); |
| 408 | MODULE_LICENSE("GPL"); |