Vitaly Wool | 36c9366 | 2006-07-03 00:24:19 -0700 | [diff] [blame] | 1 | /* |
| 2 | * drivers/video/pnx4008/pnxrgbfb.c |
| 3 | * |
| 4 | * PNX4008's framebuffer support |
| 5 | * |
| 6 | * Author: Grigory Tolstolytkin <gtolstolytkin@ru.mvista.com> |
| 7 | * Based on Philips Semiconductors's code |
| 8 | * |
| 9 | * Copyrght (c) 2005 MontaVista Software, Inc. |
| 10 | * Copyright (c) 2005 Philips Semiconductors |
| 11 | * This file is licensed under the terms of the GNU General Public License |
| 12 | * version 2. This program is licensed "as is" without any warranty of any |
| 13 | * kind, whether express or implied. |
| 14 | */ |
| 15 | |
| 16 | #include <linux/module.h> |
| 17 | #include <linux/kernel.h> |
| 18 | #include <linux/errno.h> |
| 19 | #include <linux/string.h> |
| 20 | #include <linux/mm.h> |
| 21 | #include <linux/slab.h> |
| 22 | #include <linux/vmalloc.h> |
| 23 | #include <linux/delay.h> |
| 24 | #include <linux/interrupt.h> |
| 25 | #include <linux/fb.h> |
| 26 | #include <linux/init.h> |
| 27 | #include <linux/platform_device.h> |
| 28 | |
| 29 | #include <asm/uaccess.h> |
| 30 | #include "sdum.h" |
| 31 | #include "fbcommon.h" |
| 32 | |
| 33 | static u32 colreg[16]; |
| 34 | |
| 35 | static struct fb_var_screeninfo rgbfb_var __initdata = { |
| 36 | .xres = LCD_X_RES, |
| 37 | .yres = LCD_Y_RES, |
| 38 | .xres_virtual = LCD_X_RES, |
| 39 | .yres_virtual = LCD_Y_RES, |
| 40 | .bits_per_pixel = 32, |
| 41 | .red.offset = 16, |
| 42 | .red.length = 8, |
| 43 | .green.offset = 8, |
| 44 | .green.length = 8, |
| 45 | .blue.offset = 0, |
| 46 | .blue.length = 8, |
| 47 | .left_margin = 0, |
| 48 | .right_margin = 0, |
| 49 | .upper_margin = 0, |
| 50 | .lower_margin = 0, |
| 51 | .vmode = FB_VMODE_NONINTERLACED, |
| 52 | }; |
| 53 | static struct fb_fix_screeninfo rgbfb_fix __initdata = { |
| 54 | .id = "RGBFB", |
| 55 | .line_length = LCD_X_RES * LCD_BBP, |
| 56 | .type = FB_TYPE_PACKED_PIXELS, |
| 57 | .visual = FB_VISUAL_TRUECOLOR, |
| 58 | .xpanstep = 0, |
| 59 | .ypanstep = 0, |
| 60 | .ywrapstep = 0, |
| 61 | .accel = FB_ACCEL_NONE, |
| 62 | }; |
| 63 | |
| 64 | static int channel_owned; |
| 65 | |
| 66 | static int no_cursor(struct fb_info *info, struct fb_cursor *cursor) |
| 67 | { |
| 68 | return 0; |
| 69 | } |
| 70 | |
| 71 | static int rgbfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue, |
| 72 | u_int transp, struct fb_info *info) |
| 73 | { |
| 74 | if (regno > 15) |
| 75 | return 1; |
| 76 | |
| 77 | colreg[regno] = ((red & 0xff00) << 8) | (green & 0xff00) | |
| 78 | ((blue & 0xff00) >> 8); |
| 79 | return 0; |
| 80 | } |
| 81 | |
| 82 | static int rgbfb_mmap(struct fb_info *info, struct vm_area_struct *vma) |
| 83 | { |
| 84 | return pnx4008_sdum_mmap(info, vma, NULL); |
| 85 | } |
| 86 | |
| 87 | static struct fb_ops rgbfb_ops = { |
| 88 | .fb_mmap = rgbfb_mmap, |
| 89 | .fb_setcolreg = rgbfb_setcolreg, |
| 90 | .fb_fillrect = cfb_fillrect, |
| 91 | .fb_copyarea = cfb_copyarea, |
| 92 | .fb_imageblit = cfb_imageblit, |
| 93 | }; |
| 94 | |
| 95 | static int rgbfb_remove(struct platform_device *pdev) |
| 96 | { |
| 97 | struct fb_info *info = platform_get_drvdata(pdev); |
| 98 | |
| 99 | if (info) { |
| 100 | unregister_framebuffer(info); |
| 101 | fb_dealloc_cmap(&info->cmap); |
| 102 | framebuffer_release(info); |
| 103 | platform_set_drvdata(pdev, NULL); |
| 104 | kfree(info); |
| 105 | } |
| 106 | |
| 107 | pnx4008_free_dum_channel(channel_owned, pdev->id); |
| 108 | pnx4008_set_dum_exit_notification(pdev->id); |
| 109 | |
| 110 | return 0; |
| 111 | } |
| 112 | |
| 113 | static int __devinit rgbfb_probe(struct platform_device *pdev) |
| 114 | { |
| 115 | struct fb_info *info; |
| 116 | struct dumchannel_uf chan_uf; |
| 117 | int ret; |
| 118 | char *option; |
| 119 | |
| 120 | info = framebuffer_alloc(sizeof(u32) * 16, &pdev->dev); |
| 121 | if (!info) { |
| 122 | ret = -ENOMEM; |
| 123 | goto err; |
| 124 | } |
| 125 | |
| 126 | pnx4008_get_fb_addresses(FB_TYPE_RGB, (void **)&info->screen_base, |
| 127 | (dma_addr_t *) &rgbfb_fix.smem_start, |
| 128 | &rgbfb_fix.smem_len); |
| 129 | |
| 130 | if ((ret = pnx4008_alloc_dum_channel(pdev->id)) < 0) |
| 131 | goto err0; |
| 132 | else { |
| 133 | channel_owned = ret; |
| 134 | chan_uf.channelnr = channel_owned; |
| 135 | chan_uf.dirty = (u32 *) NULL; |
| 136 | chan_uf.source = (u32 *) rgbfb_fix.smem_start; |
| 137 | chan_uf.x_offset = 0; |
| 138 | chan_uf.y_offset = 0; |
| 139 | chan_uf.width = LCD_X_RES; |
| 140 | chan_uf.height = LCD_Y_RES; |
| 141 | |
| 142 | if ((ret = pnx4008_put_dum_channel_uf(chan_uf, pdev->id))< 0) |
| 143 | goto err1; |
| 144 | |
| 145 | if ((ret = |
| 146 | pnx4008_set_dum_channel_sync(channel_owned, CONF_SYNC_ON, |
| 147 | pdev->id)) < 0) |
| 148 | goto err1; |
| 149 | |
| 150 | if ((ret = |
| 151 | pnx4008_set_dum_channel_dirty_detect(channel_owned, |
| 152 | CONF_DIRTYDETECTION_ON, |
| 153 | pdev->id)) < 0) |
| 154 | goto err1; |
| 155 | } |
| 156 | |
Vitaly Wool | 3b9c10d | 2006-11-16 01:19:14 -0800 | [diff] [blame] | 157 | if (!fb_get_options("pnxrgbfb", &option) && option && |
| 158 | !strcmp(option, "nocursor")) |
Vitaly Wool | 36c9366 | 2006-07-03 00:24:19 -0700 | [diff] [blame] | 159 | rgbfb_ops.fb_cursor = no_cursor; |
| 160 | |
| 161 | info->node = -1; |
| 162 | info->flags = FBINFO_FLAG_DEFAULT; |
| 163 | info->fbops = &rgbfb_ops; |
| 164 | info->fix = rgbfb_fix; |
| 165 | info->var = rgbfb_var; |
| 166 | info->screen_size = rgbfb_fix.smem_len; |
| 167 | info->pseudo_palette = info->par; |
| 168 | info->par = NULL; |
| 169 | |
| 170 | ret = fb_alloc_cmap(&info->cmap, 256, 0); |
| 171 | if (ret < 0) |
| 172 | goto err2; |
| 173 | |
| 174 | ret = register_framebuffer(info); |
| 175 | if (ret < 0) |
| 176 | goto err3; |
| 177 | platform_set_drvdata(pdev, info); |
| 178 | |
| 179 | return 0; |
| 180 | |
| 181 | err3: |
| 182 | fb_dealloc_cmap(&info->cmap); |
| 183 | err2: |
| 184 | framebuffer_release(info); |
| 185 | err1: |
| 186 | pnx4008_free_dum_channel(channel_owned, pdev->id); |
| 187 | err0: |
| 188 | kfree(info); |
| 189 | err: |
| 190 | return ret; |
| 191 | } |
| 192 | |
| 193 | static struct platform_driver rgbfb_driver = { |
| 194 | .driver = { |
Vitaly Wool | 84a763e | 2006-11-16 01:19:11 -0800 | [diff] [blame] | 195 | .name = "pnx4008-rgbfb", |
Vitaly Wool | 36c9366 | 2006-07-03 00:24:19 -0700 | [diff] [blame] | 196 | }, |
| 197 | .probe = rgbfb_probe, |
| 198 | .remove = rgbfb_remove, |
| 199 | }; |
| 200 | |
| 201 | static int __init rgbfb_init(void) |
| 202 | { |
| 203 | return platform_driver_register(&rgbfb_driver); |
| 204 | } |
| 205 | |
| 206 | static void __exit rgbfb_exit(void) |
| 207 | { |
| 208 | platform_driver_unregister(&rgbfb_driver); |
| 209 | } |
| 210 | |
| 211 | module_init(rgbfb_init); |
| 212 | module_exit(rgbfb_exit); |
| 213 | |
| 214 | MODULE_LICENSE("GPL"); |