Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 1 | /* |
| 2 | * Samsung Laptop driver |
| 3 | * |
| 4 | * Copyright (C) 2009,2011 Greg Kroah-Hartman (gregkh@suse.de) |
| 5 | * Copyright (C) 2009,2011 Novell Inc. |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify it |
| 8 | * under the terms of the GNU General Public License version 2 as published by |
| 9 | * the Free Software Foundation. |
| 10 | * |
| 11 | */ |
| 12 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
| 13 | |
| 14 | #include <linux/kernel.h> |
| 15 | #include <linux/init.h> |
| 16 | #include <linux/module.h> |
| 17 | #include <linux/delay.h> |
| 18 | #include <linux/pci.h> |
| 19 | #include <linux/backlight.h> |
| 20 | #include <linux/fb.h> |
| 21 | #include <linux/dmi.h> |
| 22 | #include <linux/platform_device.h> |
| 23 | #include <linux/rfkill.h> |
| 24 | |
| 25 | /* |
| 26 | * This driver is needed because a number of Samsung laptops do not hook |
| 27 | * their control settings through ACPI. So we have to poke around in the |
| 28 | * BIOS to do things like brightness values, and "special" key controls. |
| 29 | */ |
| 30 | |
| 31 | /* |
| 32 | * We have 0 - 8 as valid brightness levels. The specs say that level 0 should |
| 33 | * be reserved by the BIOS (which really doesn't make much sense), we tell |
| 34 | * userspace that the value is 0 - 7 and then just tell the hardware 1 - 8 |
| 35 | */ |
| 36 | #define MAX_BRIGHT 0x07 |
| 37 | |
| 38 | |
| 39 | #define SABI_IFACE_MAIN 0x00 |
| 40 | #define SABI_IFACE_SUB 0x02 |
| 41 | #define SABI_IFACE_COMPLETE 0x04 |
| 42 | #define SABI_IFACE_DATA 0x05 |
| 43 | |
| 44 | /* Structure to get data back to the calling function */ |
| 45 | struct sabi_retval { |
| 46 | u8 retval[20]; |
| 47 | }; |
| 48 | |
| 49 | struct sabi_header_offsets { |
| 50 | u8 port; |
| 51 | u8 re_mem; |
| 52 | u8 iface_func; |
| 53 | u8 en_mem; |
| 54 | u8 data_offset; |
| 55 | u8 data_segment; |
| 56 | }; |
| 57 | |
| 58 | struct sabi_commands { |
| 59 | /* |
| 60 | * Brightness is 0 - 8, as described above. |
| 61 | * Value 0 is for the BIOS to use |
| 62 | */ |
| 63 | u8 get_brightness; |
| 64 | u8 set_brightness; |
| 65 | |
| 66 | /* |
| 67 | * first byte: |
| 68 | * 0x00 - wireless is off |
| 69 | * 0x01 - wireless is on |
| 70 | * second byte: |
| 71 | * 0x02 - 3G is off |
| 72 | * 0x03 - 3G is on |
| 73 | * TODO, verify 3G is correct, that doesn't seem right... |
| 74 | */ |
| 75 | u8 get_wireless_button; |
| 76 | u8 set_wireless_button; |
| 77 | |
| 78 | /* 0 is off, 1 is on */ |
| 79 | u8 get_backlight; |
| 80 | u8 set_backlight; |
| 81 | |
| 82 | /* |
| 83 | * 0x80 or 0x00 - no action |
| 84 | * 0x81 - recovery key pressed |
| 85 | */ |
| 86 | u8 get_recovery_mode; |
| 87 | u8 set_recovery_mode; |
| 88 | |
| 89 | /* |
| 90 | * on seclinux: 0 is low, 1 is high, |
| 91 | * on swsmi: 0 is normal, 1 is silent, 2 is turbo |
| 92 | */ |
| 93 | u8 get_performance_level; |
| 94 | u8 set_performance_level; |
| 95 | |
| 96 | /* |
| 97 | * Tell the BIOS that Linux is running on this machine. |
| 98 | * 81 is on, 80 is off |
| 99 | */ |
| 100 | u8 set_linux; |
| 101 | }; |
| 102 | |
| 103 | struct sabi_performance_level { |
| 104 | const char *name; |
| 105 | u8 value; |
| 106 | }; |
| 107 | |
| 108 | struct sabi_config { |
| 109 | const char *test_string; |
| 110 | u16 main_function; |
| 111 | const struct sabi_header_offsets header_offsets; |
| 112 | const struct sabi_commands commands; |
| 113 | const struct sabi_performance_level performance_levels[4]; |
| 114 | u8 min_brightness; |
| 115 | u8 max_brightness; |
| 116 | }; |
| 117 | |
| 118 | static const struct sabi_config sabi_configs[] = { |
| 119 | { |
| 120 | .test_string = "SECLINUX", |
| 121 | |
| 122 | .main_function = 0x4c49, |
| 123 | |
| 124 | .header_offsets = { |
| 125 | .port = 0x00, |
| 126 | .re_mem = 0x02, |
| 127 | .iface_func = 0x03, |
| 128 | .en_mem = 0x04, |
| 129 | .data_offset = 0x05, |
| 130 | .data_segment = 0x07, |
| 131 | }, |
| 132 | |
| 133 | .commands = { |
| 134 | .get_brightness = 0x00, |
| 135 | .set_brightness = 0x01, |
| 136 | |
| 137 | .get_wireless_button = 0x02, |
| 138 | .set_wireless_button = 0x03, |
| 139 | |
| 140 | .get_backlight = 0x04, |
| 141 | .set_backlight = 0x05, |
| 142 | |
| 143 | .get_recovery_mode = 0x06, |
| 144 | .set_recovery_mode = 0x07, |
| 145 | |
| 146 | .get_performance_level = 0x08, |
| 147 | .set_performance_level = 0x09, |
| 148 | |
| 149 | .set_linux = 0x0a, |
| 150 | }, |
| 151 | |
| 152 | .performance_levels = { |
| 153 | { |
| 154 | .name = "silent", |
| 155 | .value = 0, |
| 156 | }, |
| 157 | { |
| 158 | .name = "normal", |
| 159 | .value = 1, |
| 160 | }, |
| 161 | { }, |
| 162 | }, |
| 163 | .min_brightness = 1, |
| 164 | .max_brightness = 8, |
| 165 | }, |
| 166 | { |
| 167 | .test_string = "SwSmi@", |
| 168 | |
| 169 | .main_function = 0x5843, |
| 170 | |
| 171 | .header_offsets = { |
| 172 | .port = 0x00, |
| 173 | .re_mem = 0x04, |
| 174 | .iface_func = 0x02, |
| 175 | .en_mem = 0x03, |
| 176 | .data_offset = 0x05, |
| 177 | .data_segment = 0x07, |
| 178 | }, |
| 179 | |
| 180 | .commands = { |
| 181 | .get_brightness = 0x10, |
| 182 | .set_brightness = 0x11, |
| 183 | |
| 184 | .get_wireless_button = 0x12, |
| 185 | .set_wireless_button = 0x13, |
| 186 | |
| 187 | .get_backlight = 0x2d, |
| 188 | .set_backlight = 0x2e, |
| 189 | |
| 190 | .get_recovery_mode = 0xff, |
| 191 | .set_recovery_mode = 0xff, |
| 192 | |
| 193 | .get_performance_level = 0x31, |
| 194 | .set_performance_level = 0x32, |
| 195 | |
| 196 | .set_linux = 0xff, |
| 197 | }, |
| 198 | |
| 199 | .performance_levels = { |
| 200 | { |
| 201 | .name = "normal", |
| 202 | .value = 0, |
| 203 | }, |
| 204 | { |
| 205 | .name = "silent", |
| 206 | .value = 1, |
| 207 | }, |
| 208 | { |
| 209 | .name = "overclock", |
| 210 | .value = 2, |
| 211 | }, |
| 212 | { }, |
| 213 | }, |
| 214 | .min_brightness = 0, |
| 215 | .max_brightness = 8, |
| 216 | }, |
| 217 | { }, |
| 218 | }; |
| 219 | |
Corentin Chary | a6df489 | 2011-11-26 10:59:58 +0100 | [diff] [blame^] | 220 | struct samsung_laptop { |
| 221 | const struct sabi_config *config; |
Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 222 | |
Corentin Chary | a6df489 | 2011-11-26 10:59:58 +0100 | [diff] [blame^] | 223 | void __iomem *sabi; |
| 224 | void __iomem *sabi_iface; |
| 225 | void __iomem *f0000_segment; |
| 226 | |
| 227 | struct mutex sabi_mutex; |
| 228 | |
| 229 | struct platform_device *pdev; |
| 230 | struct backlight_device *backlight_device; |
| 231 | struct rfkill *rfk; |
| 232 | |
| 233 | bool has_stepping_quirk; |
| 234 | }; |
| 235 | |
| 236 | static struct samsung_laptop *samsung; |
Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 237 | |
Rusty Russell | 90ab5ee | 2012-01-13 09:32:20 +1030 | [diff] [blame] | 238 | static bool force; |
Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 239 | module_param(force, bool, 0); |
| 240 | MODULE_PARM_DESC(force, |
| 241 | "Disable the DMI check and forces the driver to be loaded"); |
| 242 | |
Rusty Russell | 90ab5ee | 2012-01-13 09:32:20 +1030 | [diff] [blame] | 243 | static bool debug; |
Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 244 | module_param(debug, bool, S_IRUGO | S_IWUSR); |
| 245 | MODULE_PARM_DESC(debug, "Debug enabled or not"); |
| 246 | |
| 247 | static int sabi_get_command(u8 command, struct sabi_retval *sretval) |
| 248 | { |
Corentin Chary | a6df489 | 2011-11-26 10:59:58 +0100 | [diff] [blame^] | 249 | const struct sabi_config *config = samsung->config; |
Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 250 | int retval = 0; |
Corentin Chary | a6df489 | 2011-11-26 10:59:58 +0100 | [diff] [blame^] | 251 | u16 port = readw(samsung->sabi + config->header_offsets.port); |
Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 252 | u8 complete, iface_data; |
| 253 | |
Corentin Chary | a6df489 | 2011-11-26 10:59:58 +0100 | [diff] [blame^] | 254 | mutex_lock(&samsung->sabi_mutex); |
Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 255 | |
| 256 | /* enable memory to be able to write to it */ |
Corentin Chary | a6df489 | 2011-11-26 10:59:58 +0100 | [diff] [blame^] | 257 | outb(readb(samsung->sabi + config->header_offsets.en_mem), port); |
Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 258 | |
| 259 | /* write out the command */ |
Corentin Chary | a6df489 | 2011-11-26 10:59:58 +0100 | [diff] [blame^] | 260 | writew(config->main_function, samsung->sabi_iface + SABI_IFACE_MAIN); |
| 261 | writew(command, samsung->sabi_iface + SABI_IFACE_SUB); |
| 262 | writeb(0, samsung->sabi_iface + SABI_IFACE_COMPLETE); |
| 263 | outb(readb(samsung->sabi + config->header_offsets.iface_func), port); |
Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 264 | |
| 265 | /* write protect memory to make it safe */ |
Corentin Chary | a6df489 | 2011-11-26 10:59:58 +0100 | [diff] [blame^] | 266 | outb(readb(samsung->sabi + config->header_offsets.re_mem), port); |
Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 267 | |
| 268 | /* see if the command actually succeeded */ |
Corentin Chary | a6df489 | 2011-11-26 10:59:58 +0100 | [diff] [blame^] | 269 | complete = readb(samsung->sabi_iface + SABI_IFACE_COMPLETE); |
| 270 | iface_data = readb(samsung->sabi_iface + SABI_IFACE_DATA); |
Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 271 | if (complete != 0xaa || iface_data == 0xff) { |
| 272 | pr_warn("SABI get command 0x%02x failed with completion flag 0x%02x and data 0x%02x\n", |
| 273 | command, complete, iface_data); |
| 274 | retval = -EINVAL; |
| 275 | goto exit; |
| 276 | } |
| 277 | /* |
| 278 | * Save off the data into a structure so the caller use it. |
| 279 | * Right now we only want the first 4 bytes, |
| 280 | * There are commands that need more, but not for the ones we |
| 281 | * currently care about. |
| 282 | */ |
Corentin Chary | a6df489 | 2011-11-26 10:59:58 +0100 | [diff] [blame^] | 283 | sretval->retval[0] = readb(samsung->sabi_iface + SABI_IFACE_DATA); |
| 284 | sretval->retval[1] = readb(samsung->sabi_iface + SABI_IFACE_DATA + 1); |
| 285 | sretval->retval[2] = readb(samsung->sabi_iface + SABI_IFACE_DATA + 2); |
| 286 | sretval->retval[3] = readb(samsung->sabi_iface + SABI_IFACE_DATA + 3); |
Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 287 | |
| 288 | exit: |
Corentin Chary | a6df489 | 2011-11-26 10:59:58 +0100 | [diff] [blame^] | 289 | mutex_unlock(&samsung->sabi_mutex); |
Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 290 | return retval; |
| 291 | |
| 292 | } |
| 293 | |
| 294 | static int sabi_set_command(u8 command, u8 data) |
| 295 | { |
Corentin Chary | a6df489 | 2011-11-26 10:59:58 +0100 | [diff] [blame^] | 296 | const struct sabi_config *config = samsung->config; |
Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 297 | int retval = 0; |
Corentin Chary | a6df489 | 2011-11-26 10:59:58 +0100 | [diff] [blame^] | 298 | u16 port = readw(samsung->sabi + config->header_offsets.port); |
Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 299 | u8 complete, iface_data; |
| 300 | |
Corentin Chary | a6df489 | 2011-11-26 10:59:58 +0100 | [diff] [blame^] | 301 | mutex_lock(&samsung->sabi_mutex); |
Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 302 | |
| 303 | /* enable memory to be able to write to it */ |
Corentin Chary | a6df489 | 2011-11-26 10:59:58 +0100 | [diff] [blame^] | 304 | outb(readb(samsung->sabi + config->header_offsets.en_mem), port); |
Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 305 | |
| 306 | /* write out the command */ |
Corentin Chary | a6df489 | 2011-11-26 10:59:58 +0100 | [diff] [blame^] | 307 | writew(config->main_function, samsung->sabi_iface + SABI_IFACE_MAIN); |
| 308 | writew(command, samsung->sabi_iface + SABI_IFACE_SUB); |
| 309 | writeb(0, samsung->sabi_iface + SABI_IFACE_COMPLETE); |
| 310 | writeb(data, samsung->sabi_iface + SABI_IFACE_DATA); |
| 311 | outb(readb(samsung->sabi + config->header_offsets.iface_func), port); |
Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 312 | |
| 313 | /* write protect memory to make it safe */ |
Corentin Chary | a6df489 | 2011-11-26 10:59:58 +0100 | [diff] [blame^] | 314 | outb(readb(samsung->sabi + config->header_offsets.re_mem), port); |
Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 315 | |
| 316 | /* see if the command actually succeeded */ |
Corentin Chary | a6df489 | 2011-11-26 10:59:58 +0100 | [diff] [blame^] | 317 | complete = readb(samsung->sabi_iface + SABI_IFACE_COMPLETE); |
| 318 | iface_data = readb(samsung->sabi_iface + SABI_IFACE_DATA); |
Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 319 | if (complete != 0xaa || iface_data == 0xff) { |
| 320 | pr_warn("SABI set command 0x%02x failed with completion flag 0x%02x and data 0x%02x\n", |
| 321 | command, complete, iface_data); |
| 322 | retval = -EINVAL; |
| 323 | } |
| 324 | |
Corentin Chary | a6df489 | 2011-11-26 10:59:58 +0100 | [diff] [blame^] | 325 | mutex_unlock(&samsung->sabi_mutex); |
Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 326 | return retval; |
| 327 | } |
| 328 | |
| 329 | static void test_backlight(void) |
| 330 | { |
Corentin Chary | a6df489 | 2011-11-26 10:59:58 +0100 | [diff] [blame^] | 331 | const struct sabi_commands *commands = &samsung->config->commands; |
Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 332 | struct sabi_retval sretval; |
| 333 | |
Corentin Chary | a6df489 | 2011-11-26 10:59:58 +0100 | [diff] [blame^] | 334 | sabi_get_command(commands->get_backlight, &sretval); |
Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 335 | printk(KERN_DEBUG "backlight = 0x%02x\n", sretval.retval[0]); |
| 336 | |
Corentin Chary | a6df489 | 2011-11-26 10:59:58 +0100 | [diff] [blame^] | 337 | sabi_set_command(commands->set_backlight, 0); |
Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 338 | printk(KERN_DEBUG "backlight should be off\n"); |
| 339 | |
Corentin Chary | a6df489 | 2011-11-26 10:59:58 +0100 | [diff] [blame^] | 340 | sabi_get_command(commands->get_backlight, &sretval); |
Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 341 | printk(KERN_DEBUG "backlight = 0x%02x\n", sretval.retval[0]); |
| 342 | |
| 343 | msleep(1000); |
| 344 | |
Corentin Chary | a6df489 | 2011-11-26 10:59:58 +0100 | [diff] [blame^] | 345 | sabi_set_command(commands->set_backlight, 1); |
Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 346 | printk(KERN_DEBUG "backlight should be on\n"); |
| 347 | |
Corentin Chary | a6df489 | 2011-11-26 10:59:58 +0100 | [diff] [blame^] | 348 | sabi_get_command(commands->get_backlight, &sretval); |
Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 349 | printk(KERN_DEBUG "backlight = 0x%02x\n", sretval.retval[0]); |
| 350 | } |
| 351 | |
| 352 | static void test_wireless(void) |
| 353 | { |
Corentin Chary | a6df489 | 2011-11-26 10:59:58 +0100 | [diff] [blame^] | 354 | const struct sabi_commands *commands = &samsung->config->commands; |
Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 355 | struct sabi_retval sretval; |
| 356 | |
Corentin Chary | a6df489 | 2011-11-26 10:59:58 +0100 | [diff] [blame^] | 357 | sabi_get_command(commands->get_wireless_button, &sretval); |
Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 358 | printk(KERN_DEBUG "wireless led = 0x%02x\n", sretval.retval[0]); |
| 359 | |
Corentin Chary | a6df489 | 2011-11-26 10:59:58 +0100 | [diff] [blame^] | 360 | sabi_set_command(commands->set_wireless_button, 0); |
Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 361 | printk(KERN_DEBUG "wireless led should be off\n"); |
| 362 | |
Corentin Chary | a6df489 | 2011-11-26 10:59:58 +0100 | [diff] [blame^] | 363 | sabi_get_command(commands->get_wireless_button, &sretval); |
Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 364 | printk(KERN_DEBUG "wireless led = 0x%02x\n", sretval.retval[0]); |
| 365 | |
| 366 | msleep(1000); |
| 367 | |
Corentin Chary | a6df489 | 2011-11-26 10:59:58 +0100 | [diff] [blame^] | 368 | sabi_set_command(commands->set_wireless_button, 1); |
Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 369 | printk(KERN_DEBUG "wireless led should be on\n"); |
| 370 | |
Corentin Chary | a6df489 | 2011-11-26 10:59:58 +0100 | [diff] [blame^] | 371 | sabi_get_command(commands->get_wireless_button, &sretval); |
Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 372 | printk(KERN_DEBUG "wireless led = 0x%02x\n", sretval.retval[0]); |
| 373 | } |
| 374 | |
| 375 | static u8 read_brightness(void) |
| 376 | { |
Corentin Chary | a6df489 | 2011-11-26 10:59:58 +0100 | [diff] [blame^] | 377 | const struct sabi_config *config = samsung->config; |
| 378 | const struct sabi_commands *commands = &samsung->config->commands; |
Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 379 | struct sabi_retval sretval; |
| 380 | int user_brightness = 0; |
| 381 | int retval; |
| 382 | |
Corentin Chary | a6df489 | 2011-11-26 10:59:58 +0100 | [diff] [blame^] | 383 | retval = sabi_get_command(commands->get_brightness, |
Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 384 | &sretval); |
| 385 | if (!retval) { |
| 386 | user_brightness = sretval.retval[0]; |
Corentin Chary | a6df489 | 2011-11-26 10:59:58 +0100 | [diff] [blame^] | 387 | if (user_brightness > config->min_brightness) |
| 388 | user_brightness -= config->min_brightness; |
Jason Stubbs | bee460b | 2011-09-20 09:16:11 -0700 | [diff] [blame] | 389 | else |
| 390 | user_brightness = 0; |
Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 391 | } |
| 392 | return user_brightness; |
| 393 | } |
| 394 | |
| 395 | static void set_brightness(u8 user_brightness) |
| 396 | { |
Corentin Chary | a6df489 | 2011-11-26 10:59:58 +0100 | [diff] [blame^] | 397 | const struct sabi_config *config = samsung->config; |
| 398 | const struct sabi_commands *commands = &samsung->config->commands; |
| 399 | u8 user_level = user_brightness + config->min_brightness; |
Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 400 | |
Corentin Chary | a6df489 | 2011-11-26 10:59:58 +0100 | [diff] [blame^] | 401 | if (samsung->has_stepping_quirk && user_level != 0) { |
Jason Stubbs | ac08052 | 2011-09-20 09:16:13 -0700 | [diff] [blame] | 402 | /* |
| 403 | * short circuit if the specified level is what's already set |
| 404 | * to prevent the screen from flickering needlessly |
| 405 | */ |
| 406 | if (user_brightness == read_brightness()) |
| 407 | return; |
| 408 | |
Corentin Chary | a6df489 | 2011-11-26 10:59:58 +0100 | [diff] [blame^] | 409 | sabi_set_command(commands->set_brightness, 0); |
Jason Stubbs | ac08052 | 2011-09-20 09:16:13 -0700 | [diff] [blame] | 410 | } |
| 411 | |
Corentin Chary | a6df489 | 2011-11-26 10:59:58 +0100 | [diff] [blame^] | 412 | sabi_set_command(commands->set_brightness, user_level); |
Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 413 | } |
| 414 | |
| 415 | static int get_brightness(struct backlight_device *bd) |
| 416 | { |
| 417 | return (int)read_brightness(); |
| 418 | } |
| 419 | |
Jason Stubbs | ac08052 | 2011-09-20 09:16:13 -0700 | [diff] [blame] | 420 | static void check_for_stepping_quirk(void) |
| 421 | { |
John Serock | ba05b23 | 2011-10-13 06:42:01 -0400 | [diff] [blame] | 422 | u8 initial_level; |
Jason Stubbs | ac08052 | 2011-09-20 09:16:13 -0700 | [diff] [blame] | 423 | u8 check_level; |
John Serock | ba05b23 | 2011-10-13 06:42:01 -0400 | [diff] [blame] | 424 | u8 orig_level = read_brightness(); |
Jason Stubbs | ac08052 | 2011-09-20 09:16:13 -0700 | [diff] [blame] | 425 | |
| 426 | /* |
| 427 | * Some laptops exhibit the strange behaviour of stepping toward |
| 428 | * (rather than setting) the brightness except when changing to/from |
| 429 | * brightness level 0. This behaviour is checked for here and worked |
| 430 | * around in set_brightness. |
| 431 | */ |
| 432 | |
John Serock | ba05b23 | 2011-10-13 06:42:01 -0400 | [diff] [blame] | 433 | if (orig_level == 0) |
| 434 | set_brightness(1); |
| 435 | |
| 436 | initial_level = read_brightness(); |
| 437 | |
Jason Stubbs | ac08052 | 2011-09-20 09:16:13 -0700 | [diff] [blame] | 438 | if (initial_level <= 2) |
| 439 | check_level = initial_level + 2; |
| 440 | else |
| 441 | check_level = initial_level - 2; |
| 442 | |
Corentin Chary | a6df489 | 2011-11-26 10:59:58 +0100 | [diff] [blame^] | 443 | samsung->has_stepping_quirk = false; |
Jason Stubbs | ac08052 | 2011-09-20 09:16:13 -0700 | [diff] [blame] | 444 | set_brightness(check_level); |
| 445 | |
| 446 | if (read_brightness() != check_level) { |
Corentin Chary | a6df489 | 2011-11-26 10:59:58 +0100 | [diff] [blame^] | 447 | samsung->has_stepping_quirk = true; |
Jason Stubbs | ac08052 | 2011-09-20 09:16:13 -0700 | [diff] [blame] | 448 | pr_info("enabled workaround for brightness stepping quirk\n"); |
| 449 | } |
| 450 | |
John Serock | ba05b23 | 2011-10-13 06:42:01 -0400 | [diff] [blame] | 451 | set_brightness(orig_level); |
Jason Stubbs | ac08052 | 2011-09-20 09:16:13 -0700 | [diff] [blame] | 452 | } |
| 453 | |
Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 454 | static int update_status(struct backlight_device *bd) |
| 455 | { |
Corentin Chary | a6df489 | 2011-11-26 10:59:58 +0100 | [diff] [blame^] | 456 | const struct sabi_commands *commands = &samsung->config->commands; |
| 457 | |
Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 458 | set_brightness(bd->props.brightness); |
| 459 | |
| 460 | if (bd->props.power == FB_BLANK_UNBLANK) |
Corentin Chary | a6df489 | 2011-11-26 10:59:58 +0100 | [diff] [blame^] | 461 | sabi_set_command(commands->set_backlight, 1); |
Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 462 | else |
Corentin Chary | a6df489 | 2011-11-26 10:59:58 +0100 | [diff] [blame^] | 463 | sabi_set_command(commands->set_backlight, 0); |
Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 464 | return 0; |
| 465 | } |
| 466 | |
| 467 | static const struct backlight_ops backlight_ops = { |
| 468 | .get_brightness = get_brightness, |
| 469 | .update_status = update_status, |
| 470 | }; |
| 471 | |
| 472 | static int rfkill_set(void *data, bool blocked) |
| 473 | { |
Corentin Chary | a6df489 | 2011-11-26 10:59:58 +0100 | [diff] [blame^] | 474 | const struct sabi_commands *commands = &samsung->config->commands; |
| 475 | |
Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 476 | /* Do something with blocked...*/ |
| 477 | /* |
| 478 | * blocked == false is on |
| 479 | * blocked == true is off |
| 480 | */ |
| 481 | if (blocked) |
Corentin Chary | a6df489 | 2011-11-26 10:59:58 +0100 | [diff] [blame^] | 482 | sabi_set_command(commands->set_wireless_button, 0); |
Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 483 | else |
Corentin Chary | a6df489 | 2011-11-26 10:59:58 +0100 | [diff] [blame^] | 484 | sabi_set_command(commands->set_wireless_button, 1); |
Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 485 | |
| 486 | return 0; |
| 487 | } |
| 488 | |
| 489 | static struct rfkill_ops rfkill_ops = { |
| 490 | .set_block = rfkill_set, |
| 491 | }; |
| 492 | |
Corentin Chary | a6df489 | 2011-11-26 10:59:58 +0100 | [diff] [blame^] | 493 | static int init_wireless(struct platform_device *pdev) |
Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 494 | { |
| 495 | int retval; |
| 496 | |
Corentin Chary | a6df489 | 2011-11-26 10:59:58 +0100 | [diff] [blame^] | 497 | samsung->rfk = rfkill_alloc("samsung-wifi", &samsung->pdev->dev, RFKILL_TYPE_WLAN, |
| 498 | &rfkill_ops, NULL); |
| 499 | if (!samsung->rfk) |
Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 500 | return -ENOMEM; |
| 501 | |
Corentin Chary | a6df489 | 2011-11-26 10:59:58 +0100 | [diff] [blame^] | 502 | retval = rfkill_register(samsung->rfk); |
Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 503 | if (retval) { |
Corentin Chary | a6df489 | 2011-11-26 10:59:58 +0100 | [diff] [blame^] | 504 | rfkill_destroy(samsung->rfk); |
Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 505 | return -ENODEV; |
| 506 | } |
| 507 | |
| 508 | return 0; |
| 509 | } |
| 510 | |
| 511 | static void destroy_wireless(void) |
| 512 | { |
Corentin Chary | a6df489 | 2011-11-26 10:59:58 +0100 | [diff] [blame^] | 513 | rfkill_unregister(samsung->rfk); |
| 514 | rfkill_destroy(samsung->rfk); |
Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 515 | } |
| 516 | |
| 517 | static ssize_t get_performance_level(struct device *dev, |
| 518 | struct device_attribute *attr, char *buf) |
| 519 | { |
Corentin Chary | a6df489 | 2011-11-26 10:59:58 +0100 | [diff] [blame^] | 520 | const struct sabi_config *config = samsung->config; |
Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 521 | struct sabi_retval sretval; |
| 522 | int retval; |
| 523 | int i; |
| 524 | |
| 525 | /* Read the state */ |
Corentin Chary | a6df489 | 2011-11-26 10:59:58 +0100 | [diff] [blame^] | 526 | retval = sabi_get_command(config->commands.get_performance_level, |
Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 527 | &sretval); |
| 528 | if (retval) |
| 529 | return retval; |
| 530 | |
| 531 | /* The logic is backwards, yeah, lots of fun... */ |
Corentin Chary | a6df489 | 2011-11-26 10:59:58 +0100 | [diff] [blame^] | 532 | for (i = 0; config->performance_levels[i].name; ++i) { |
| 533 | if (sretval.retval[0] == config->performance_levels[i].value) |
| 534 | return sprintf(buf, "%s\n", config->performance_levels[i].name); |
Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 535 | } |
| 536 | return sprintf(buf, "%s\n", "unknown"); |
| 537 | } |
| 538 | |
| 539 | static ssize_t set_performance_level(struct device *dev, |
| 540 | struct device_attribute *attr, const char *buf, |
| 541 | size_t count) |
| 542 | { |
Corentin Chary | a6df489 | 2011-11-26 10:59:58 +0100 | [diff] [blame^] | 543 | const struct sabi_config *config = samsung->config; |
| 544 | |
Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 545 | if (count >= 1) { |
| 546 | int i; |
Corentin Chary | a6df489 | 2011-11-26 10:59:58 +0100 | [diff] [blame^] | 547 | for (i = 0; config->performance_levels[i].name; ++i) { |
Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 548 | const struct sabi_performance_level *level = |
Corentin Chary | a6df489 | 2011-11-26 10:59:58 +0100 | [diff] [blame^] | 549 | &config->performance_levels[i]; |
Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 550 | if (!strncasecmp(level->name, buf, strlen(level->name))) { |
Corentin Chary | a6df489 | 2011-11-26 10:59:58 +0100 | [diff] [blame^] | 551 | sabi_set_command(config->commands.set_performance_level, |
Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 552 | level->value); |
| 553 | break; |
| 554 | } |
| 555 | } |
Corentin Chary | a6df489 | 2011-11-26 10:59:58 +0100 | [diff] [blame^] | 556 | if (!config->performance_levels[i].name) |
Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 557 | return -EINVAL; |
| 558 | } |
| 559 | return count; |
| 560 | } |
| 561 | static DEVICE_ATTR(performance_level, S_IWUSR | S_IRUGO, |
| 562 | get_performance_level, set_performance_level); |
| 563 | |
| 564 | |
| 565 | static int __init dmi_check_cb(const struct dmi_system_id *id) |
| 566 | { |
| 567 | pr_info("found laptop model '%s'\n", |
| 568 | id->ident); |
Axel Lin | 2783658 | 2011-03-14 18:56:18 +0800 | [diff] [blame] | 569 | return 1; |
Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 570 | } |
| 571 | |
| 572 | static struct dmi_system_id __initdata samsung_dmi_table[] = { |
| 573 | { |
| 574 | .ident = "N128", |
| 575 | .matches = { |
| 576 | DMI_MATCH(DMI_SYS_VENDOR, |
| 577 | "SAMSUNG ELECTRONICS CO., LTD."), |
| 578 | DMI_MATCH(DMI_PRODUCT_NAME, "N128"), |
| 579 | DMI_MATCH(DMI_BOARD_NAME, "N128"), |
| 580 | }, |
| 581 | .callback = dmi_check_cb, |
| 582 | }, |
| 583 | { |
| 584 | .ident = "N130", |
| 585 | .matches = { |
| 586 | DMI_MATCH(DMI_SYS_VENDOR, |
| 587 | "SAMSUNG ELECTRONICS CO., LTD."), |
| 588 | DMI_MATCH(DMI_PRODUCT_NAME, "N130"), |
| 589 | DMI_MATCH(DMI_BOARD_NAME, "N130"), |
| 590 | }, |
| 591 | .callback = dmi_check_cb, |
| 592 | }, |
| 593 | { |
J Witteveen | 4e2441c | 2011-07-03 13:15:44 +0200 | [diff] [blame] | 594 | .ident = "N510", |
| 595 | .matches = { |
| 596 | DMI_MATCH(DMI_SYS_VENDOR, |
| 597 | "SAMSUNG ELECTRONICS CO., LTD."), |
| 598 | DMI_MATCH(DMI_PRODUCT_NAME, "N510"), |
| 599 | DMI_MATCH(DMI_BOARD_NAME, "N510"), |
| 600 | }, |
| 601 | .callback = dmi_check_cb, |
| 602 | }, |
| 603 | { |
Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 604 | .ident = "X125", |
| 605 | .matches = { |
| 606 | DMI_MATCH(DMI_SYS_VENDOR, |
| 607 | "SAMSUNG ELECTRONICS CO., LTD."), |
| 608 | DMI_MATCH(DMI_PRODUCT_NAME, "X125"), |
| 609 | DMI_MATCH(DMI_BOARD_NAME, "X125"), |
| 610 | }, |
| 611 | .callback = dmi_check_cb, |
| 612 | }, |
| 613 | { |
| 614 | .ident = "X120/X170", |
| 615 | .matches = { |
| 616 | DMI_MATCH(DMI_SYS_VENDOR, |
| 617 | "SAMSUNG ELECTRONICS CO., LTD."), |
| 618 | DMI_MATCH(DMI_PRODUCT_NAME, "X120/X170"), |
| 619 | DMI_MATCH(DMI_BOARD_NAME, "X120/X170"), |
| 620 | }, |
| 621 | .callback = dmi_check_cb, |
| 622 | }, |
| 623 | { |
| 624 | .ident = "NC10", |
| 625 | .matches = { |
| 626 | DMI_MATCH(DMI_SYS_VENDOR, |
| 627 | "SAMSUNG ELECTRONICS CO., LTD."), |
| 628 | DMI_MATCH(DMI_PRODUCT_NAME, "NC10"), |
| 629 | DMI_MATCH(DMI_BOARD_NAME, "NC10"), |
| 630 | }, |
| 631 | .callback = dmi_check_cb, |
| 632 | }, |
| 633 | { |
| 634 | .ident = "NP-Q45", |
| 635 | .matches = { |
| 636 | DMI_MATCH(DMI_SYS_VENDOR, |
| 637 | "SAMSUNG ELECTRONICS CO., LTD."), |
| 638 | DMI_MATCH(DMI_PRODUCT_NAME, "SQ45S70S"), |
| 639 | DMI_MATCH(DMI_BOARD_NAME, "SQ45S70S"), |
| 640 | }, |
| 641 | .callback = dmi_check_cb, |
| 642 | }, |
| 643 | { |
| 644 | .ident = "X360", |
| 645 | .matches = { |
| 646 | DMI_MATCH(DMI_SYS_VENDOR, |
| 647 | "SAMSUNG ELECTRONICS CO., LTD."), |
| 648 | DMI_MATCH(DMI_PRODUCT_NAME, "X360"), |
| 649 | DMI_MATCH(DMI_BOARD_NAME, "X360"), |
| 650 | }, |
| 651 | .callback = dmi_check_cb, |
| 652 | }, |
| 653 | { |
Alberto Mardegan | 3d536ed | 2011-04-08 17:02:03 +0200 | [diff] [blame] | 654 | .ident = "R410 Plus", |
| 655 | .matches = { |
| 656 | DMI_MATCH(DMI_SYS_VENDOR, |
| 657 | "SAMSUNG ELECTRONICS CO., LTD."), |
| 658 | DMI_MATCH(DMI_PRODUCT_NAME, "R410P"), |
| 659 | DMI_MATCH(DMI_BOARD_NAME, "R460"), |
| 660 | }, |
| 661 | .callback = dmi_check_cb, |
| 662 | }, |
| 663 | { |
Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 664 | .ident = "R518", |
| 665 | .matches = { |
| 666 | DMI_MATCH(DMI_SYS_VENDOR, |
| 667 | "SAMSUNG ELECTRONICS CO., LTD."), |
| 668 | DMI_MATCH(DMI_PRODUCT_NAME, "R518"), |
| 669 | DMI_MATCH(DMI_BOARD_NAME, "R518"), |
| 670 | }, |
| 671 | .callback = dmi_check_cb, |
| 672 | }, |
| 673 | { |
| 674 | .ident = "R519/R719", |
| 675 | .matches = { |
| 676 | DMI_MATCH(DMI_SYS_VENDOR, |
| 677 | "SAMSUNG ELECTRONICS CO., LTD."), |
| 678 | DMI_MATCH(DMI_PRODUCT_NAME, "R519/R719"), |
| 679 | DMI_MATCH(DMI_BOARD_NAME, "R519/R719"), |
| 680 | }, |
| 681 | .callback = dmi_check_cb, |
| 682 | }, |
| 683 | { |
Thomas Courbon | 78a7539 | 2011-07-20 22:57:44 +0200 | [diff] [blame] | 684 | .ident = "N150/N210/N220", |
| 685 | .matches = { |
| 686 | DMI_MATCH(DMI_SYS_VENDOR, |
| 687 | "SAMSUNG ELECTRONICS CO., LTD."), |
| 688 | DMI_MATCH(DMI_PRODUCT_NAME, "N150/N210/N220"), |
| 689 | DMI_MATCH(DMI_BOARD_NAME, "N150/N210/N220"), |
| 690 | }, |
| 691 | .callback = dmi_check_cb, |
| 692 | }, |
| 693 | { |
Raul Gutierrez Segales | f689c87 | 2011-09-20 09:16:15 -0700 | [diff] [blame] | 694 | .ident = "N220", |
| 695 | .matches = { |
| 696 | DMI_MATCH(DMI_SYS_VENDOR, |
| 697 | "SAMSUNG ELECTRONICS CO., LTD."), |
| 698 | DMI_MATCH(DMI_PRODUCT_NAME, "N220"), |
| 699 | DMI_MATCH(DMI_BOARD_NAME, "N220"), |
| 700 | }, |
| 701 | .callback = dmi_check_cb, |
| 702 | }, |
| 703 | { |
Greg Kroah-Hartman | 1016507 | 2011-04-08 17:02:04 +0200 | [diff] [blame] | 704 | .ident = "N150/N210/N220/N230", |
Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 705 | .matches = { |
| 706 | DMI_MATCH(DMI_SYS_VENDOR, |
| 707 | "SAMSUNG ELECTRONICS CO., LTD."), |
Greg Kroah-Hartman | 1016507 | 2011-04-08 17:02:04 +0200 | [diff] [blame] | 708 | DMI_MATCH(DMI_PRODUCT_NAME, "N150/N210/N220/N230"), |
| 709 | DMI_MATCH(DMI_BOARD_NAME, "N150/N210/N220/N230"), |
Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 710 | }, |
| 711 | .callback = dmi_check_cb, |
| 712 | }, |
| 713 | { |
| 714 | .ident = "N150P/N210P/N220P", |
| 715 | .matches = { |
| 716 | DMI_MATCH(DMI_SYS_VENDOR, |
| 717 | "SAMSUNG ELECTRONICS CO., LTD."), |
| 718 | DMI_MATCH(DMI_PRODUCT_NAME, "N150P/N210P/N220P"), |
| 719 | DMI_MATCH(DMI_BOARD_NAME, "N150P/N210P/N220P"), |
| 720 | }, |
| 721 | .callback = dmi_check_cb, |
| 722 | }, |
| 723 | { |
Stefan Beller | f87d029 | 2011-09-20 09:16:08 -0700 | [diff] [blame] | 724 | .ident = "R700", |
| 725 | .matches = { |
| 726 | DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."), |
| 727 | DMI_MATCH(DMI_PRODUCT_NAME, "SR700"), |
| 728 | DMI_MATCH(DMI_BOARD_NAME, "SR700"), |
| 729 | }, |
| 730 | .callback = dmi_check_cb, |
| 731 | }, |
| 732 | { |
Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 733 | .ident = "R530/R730", |
| 734 | .matches = { |
| 735 | DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."), |
| 736 | DMI_MATCH(DMI_PRODUCT_NAME, "R530/R730"), |
| 737 | DMI_MATCH(DMI_BOARD_NAME, "R530/R730"), |
| 738 | }, |
| 739 | .callback = dmi_check_cb, |
| 740 | }, |
| 741 | { |
| 742 | .ident = "NF110/NF210/NF310", |
| 743 | .matches = { |
| 744 | DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."), |
| 745 | DMI_MATCH(DMI_PRODUCT_NAME, "NF110/NF210/NF310"), |
| 746 | DMI_MATCH(DMI_BOARD_NAME, "NF110/NF210/NF310"), |
| 747 | }, |
| 748 | .callback = dmi_check_cb, |
| 749 | }, |
| 750 | { |
| 751 | .ident = "N145P/N250P/N260P", |
| 752 | .matches = { |
| 753 | DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."), |
| 754 | DMI_MATCH(DMI_PRODUCT_NAME, "N145P/N250P/N260P"), |
| 755 | DMI_MATCH(DMI_BOARD_NAME, "N145P/N250P/N260P"), |
| 756 | }, |
| 757 | .callback = dmi_check_cb, |
| 758 | }, |
| 759 | { |
| 760 | .ident = "R70/R71", |
| 761 | .matches = { |
| 762 | DMI_MATCH(DMI_SYS_VENDOR, |
| 763 | "SAMSUNG ELECTRONICS CO., LTD."), |
| 764 | DMI_MATCH(DMI_PRODUCT_NAME, "R70/R71"), |
| 765 | DMI_MATCH(DMI_BOARD_NAME, "R70/R71"), |
| 766 | }, |
| 767 | .callback = dmi_check_cb, |
| 768 | }, |
| 769 | { |
| 770 | .ident = "P460", |
| 771 | .matches = { |
| 772 | DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."), |
| 773 | DMI_MATCH(DMI_PRODUCT_NAME, "P460"), |
| 774 | DMI_MATCH(DMI_BOARD_NAME, "P460"), |
| 775 | }, |
| 776 | .callback = dmi_check_cb, |
| 777 | }, |
Smelov Andrey | 093ed56 | 2011-09-20 09:16:10 -0700 | [diff] [blame] | 778 | { |
| 779 | .ident = "R528/R728", |
| 780 | .matches = { |
| 781 | DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."), |
| 782 | DMI_MATCH(DMI_PRODUCT_NAME, "R528/R728"), |
| 783 | DMI_MATCH(DMI_BOARD_NAME, "R528/R728"), |
| 784 | }, |
| 785 | .callback = dmi_check_cb, |
| 786 | }, |
Jason Stubbs | 7b3c257 | 2011-09-20 09:16:14 -0700 | [diff] [blame] | 787 | { |
| 788 | .ident = "NC210/NC110", |
| 789 | .matches = { |
| 790 | DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."), |
| 791 | DMI_MATCH(DMI_PRODUCT_NAME, "NC210/NC110"), |
| 792 | DMI_MATCH(DMI_BOARD_NAME, "NC210/NC110"), |
| 793 | }, |
| 794 | .callback = dmi_check_cb, |
| 795 | }, |
Tommaso Massimi | 7500eeb | 2011-09-20 09:16:09 -0700 | [diff] [blame] | 796 | { |
| 797 | .ident = "X520", |
| 798 | .matches = { |
| 799 | DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."), |
| 800 | DMI_MATCH(DMI_PRODUCT_NAME, "X520"), |
| 801 | DMI_MATCH(DMI_BOARD_NAME, "X520"), |
| 802 | }, |
| 803 | .callback = dmi_check_cb, |
| 804 | }, |
Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 805 | { }, |
| 806 | }; |
| 807 | MODULE_DEVICE_TABLE(dmi, samsung_dmi_table); |
| 808 | |
| 809 | static int find_signature(void __iomem *memcheck, const char *testStr) |
| 810 | { |
| 811 | int i = 0; |
| 812 | int loca; |
| 813 | |
| 814 | for (loca = 0; loca < 0xffff; loca++) { |
| 815 | char temp = readb(memcheck + loca); |
| 816 | |
| 817 | if (temp == testStr[i]) { |
| 818 | if (i == strlen(testStr)-1) |
| 819 | break; |
| 820 | ++i; |
| 821 | } else { |
| 822 | i = 0; |
| 823 | } |
| 824 | } |
| 825 | return loca; |
| 826 | } |
| 827 | |
| 828 | static int __init samsung_init(void) |
| 829 | { |
Corentin Chary | a6df489 | 2011-11-26 10:59:58 +0100 | [diff] [blame^] | 830 | const struct sabi_config *config = NULL; |
| 831 | const struct sabi_commands *commands; |
| 832 | struct backlight_device *bd; |
Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 833 | struct backlight_properties props; |
| 834 | struct sabi_retval sretval; |
| 835 | unsigned int ifaceP; |
| 836 | int i; |
| 837 | int loca; |
| 838 | int retval; |
| 839 | |
Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 840 | if (!force && !dmi_check_system(samsung_dmi_table)) |
| 841 | return -ENODEV; |
| 842 | |
Corentin Chary | a6df489 | 2011-11-26 10:59:58 +0100 | [diff] [blame^] | 843 | samsung = kzalloc(sizeof(*samsung), GFP_KERNEL); |
| 844 | if (!samsung) |
| 845 | return -ENOMEM; |
| 846 | |
| 847 | mutex_init(&samsung->sabi_mutex); |
| 848 | |
| 849 | samsung->f0000_segment = ioremap_nocache(0xf0000, 0xffff); |
| 850 | if (!samsung->f0000_segment) { |
Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 851 | pr_err("Can't map the segment at 0xf0000\n"); |
Corentin Chary | a6df489 | 2011-11-26 10:59:58 +0100 | [diff] [blame^] | 852 | goto error_cant_map; |
Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 853 | } |
| 854 | |
| 855 | /* Try to find one of the signatures in memory to find the header */ |
| 856 | for (i = 0; sabi_configs[i].test_string != 0; ++i) { |
Corentin Chary | a6df489 | 2011-11-26 10:59:58 +0100 | [diff] [blame^] | 857 | samsung->config = &sabi_configs[i]; |
| 858 | loca = find_signature(samsung->f0000_segment, |
| 859 | samsung->config->test_string); |
Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 860 | if (loca != 0xffff) |
| 861 | break; |
| 862 | } |
| 863 | |
| 864 | if (loca == 0xffff) { |
| 865 | pr_err("This computer does not support SABI\n"); |
| 866 | goto error_no_signature; |
| 867 | } |
| 868 | |
Corentin Chary | a6df489 | 2011-11-26 10:59:58 +0100 | [diff] [blame^] | 869 | config = samsung->config; |
| 870 | commands = &config->commands; |
| 871 | |
Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 872 | /* point to the SMI port Number */ |
| 873 | loca += 1; |
Corentin Chary | a6df489 | 2011-11-26 10:59:58 +0100 | [diff] [blame^] | 874 | samsung->sabi = (samsung->f0000_segment + loca); |
Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 875 | |
| 876 | if (debug) { |
| 877 | printk(KERN_DEBUG "This computer supports SABI==%x\n", |
| 878 | loca + 0xf0000 - 6); |
| 879 | printk(KERN_DEBUG "SABI header:\n"); |
| 880 | printk(KERN_DEBUG " SMI Port Number = 0x%04x\n", |
Corentin Chary | a6df489 | 2011-11-26 10:59:58 +0100 | [diff] [blame^] | 881 | readw(samsung->sabi + |
| 882 | config->header_offsets.port)); |
Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 883 | printk(KERN_DEBUG " SMI Interface Function = 0x%02x\n", |
Corentin Chary | a6df489 | 2011-11-26 10:59:58 +0100 | [diff] [blame^] | 884 | readb(samsung->sabi + |
| 885 | config->header_offsets.iface_func)); |
Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 886 | printk(KERN_DEBUG " SMI enable memory buffer = 0x%02x\n", |
Corentin Chary | a6df489 | 2011-11-26 10:59:58 +0100 | [diff] [blame^] | 887 | readb(samsung->sabi + |
| 888 | config->header_offsets.en_mem)); |
Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 889 | printk(KERN_DEBUG " SMI restore memory buffer = 0x%02x\n", |
Corentin Chary | a6df489 | 2011-11-26 10:59:58 +0100 | [diff] [blame^] | 890 | readb(samsung->sabi + |
| 891 | config->header_offsets.re_mem)); |
Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 892 | printk(KERN_DEBUG " SABI data offset = 0x%04x\n", |
Corentin Chary | a6df489 | 2011-11-26 10:59:58 +0100 | [diff] [blame^] | 893 | readw(samsung->sabi + |
| 894 | config->header_offsets.data_offset)); |
Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 895 | printk(KERN_DEBUG " SABI data segment = 0x%04x\n", |
Corentin Chary | a6df489 | 2011-11-26 10:59:58 +0100 | [diff] [blame^] | 896 | readw(samsung->sabi + |
| 897 | config->header_offsets.data_segment)); |
Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 898 | } |
| 899 | |
| 900 | /* Get a pointer to the SABI Interface */ |
Corentin Chary | a6df489 | 2011-11-26 10:59:58 +0100 | [diff] [blame^] | 901 | ifaceP = (readw(samsung->sabi + config->header_offsets.data_segment) & 0x0ffff) << 4; |
| 902 | ifaceP += readw(samsung->sabi + config->header_offsets.data_offset) & 0x0ffff; |
| 903 | samsung->sabi_iface = ioremap_nocache(ifaceP, 16); |
| 904 | if (!samsung->sabi_iface) { |
Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 905 | pr_err("Can't remap %x\n", ifaceP); |
David Herrmann | a7ea199 | 2011-09-20 09:16:12 -0700 | [diff] [blame] | 906 | goto error_no_signature; |
Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 907 | } |
| 908 | if (debug) { |
| 909 | printk(KERN_DEBUG "ifaceP = 0x%08x\n", ifaceP); |
Corentin Chary | a6df489 | 2011-11-26 10:59:58 +0100 | [diff] [blame^] | 910 | printk(KERN_DEBUG "sabi_iface = %p\n", samsung->sabi_iface); |
Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 911 | |
| 912 | test_backlight(); |
| 913 | test_wireless(); |
| 914 | |
Corentin Chary | a6df489 | 2011-11-26 10:59:58 +0100 | [diff] [blame^] | 915 | retval = sabi_get_command(commands->get_brightness, |
Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 916 | &sretval); |
| 917 | printk(KERN_DEBUG "brightness = 0x%02x\n", sretval.retval[0]); |
| 918 | } |
| 919 | |
| 920 | /* Turn on "Linux" mode in the BIOS */ |
Corentin Chary | a6df489 | 2011-11-26 10:59:58 +0100 | [diff] [blame^] | 921 | if (commands->set_linux != 0xff) { |
| 922 | retval = sabi_set_command(commands->set_linux, |
Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 923 | 0x81); |
| 924 | if (retval) { |
| 925 | pr_warn("Linux mode was not set!\n"); |
| 926 | goto error_no_platform; |
| 927 | } |
| 928 | } |
| 929 | |
Jason Stubbs | ac08052 | 2011-09-20 09:16:13 -0700 | [diff] [blame] | 930 | /* Check for stepping quirk */ |
| 931 | check_for_stepping_quirk(); |
| 932 | |
Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 933 | /* knock up a platform device to hang stuff off of */ |
Corentin Chary | a6df489 | 2011-11-26 10:59:58 +0100 | [diff] [blame^] | 934 | samsung->pdev = platform_device_register_simple("samsung", -1, NULL, 0); |
| 935 | if (IS_ERR(samsung->pdev)) |
Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 936 | goto error_no_platform; |
| 937 | |
| 938 | /* create a backlight device to talk to this one */ |
| 939 | memset(&props, 0, sizeof(struct backlight_properties)); |
Michal Marek | 8713b04 | 2011-04-08 17:02:05 +0200 | [diff] [blame] | 940 | props.type = BACKLIGHT_PLATFORM; |
Corentin Chary | a6df489 | 2011-11-26 10:59:58 +0100 | [diff] [blame^] | 941 | props.max_brightness = config->max_brightness - |
| 942 | config->min_brightness; |
| 943 | bd = backlight_device_register("samsung", &samsung->pdev->dev, |
| 944 | NULL, &backlight_ops, |
| 945 | &props); |
| 946 | if (IS_ERR(bd)) |
Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 947 | goto error_no_backlight; |
| 948 | |
Corentin Chary | a6df489 | 2011-11-26 10:59:58 +0100 | [diff] [blame^] | 949 | samsung->backlight_device = bd; |
| 950 | samsung->backlight_device->props.brightness = read_brightness(); |
| 951 | samsung->backlight_device->props.power = FB_BLANK_UNBLANK; |
| 952 | backlight_update_status(samsung->backlight_device); |
Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 953 | |
Corentin Chary | a6df489 | 2011-11-26 10:59:58 +0100 | [diff] [blame^] | 954 | retval = init_wireless(samsung->pdev); |
Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 955 | if (retval) |
| 956 | goto error_no_rfk; |
| 957 | |
Corentin Chary | a6df489 | 2011-11-26 10:59:58 +0100 | [diff] [blame^] | 958 | retval = device_create_file(&samsung->pdev->dev, |
| 959 | &dev_attr_performance_level); |
Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 960 | if (retval) |
| 961 | goto error_file_create; |
| 962 | |
Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 963 | return 0; |
| 964 | |
| 965 | error_file_create: |
| 966 | destroy_wireless(); |
| 967 | |
| 968 | error_no_rfk: |
Corentin Chary | a6df489 | 2011-11-26 10:59:58 +0100 | [diff] [blame^] | 969 | backlight_device_unregister(samsung->backlight_device); |
Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 970 | |
| 971 | error_no_backlight: |
Corentin Chary | a6df489 | 2011-11-26 10:59:58 +0100 | [diff] [blame^] | 972 | platform_device_unregister(samsung->pdev); |
Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 973 | |
| 974 | error_no_platform: |
Corentin Chary | a6df489 | 2011-11-26 10:59:58 +0100 | [diff] [blame^] | 975 | iounmap(samsung->sabi_iface); |
Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 976 | |
| 977 | error_no_signature: |
Corentin Chary | a6df489 | 2011-11-26 10:59:58 +0100 | [diff] [blame^] | 978 | iounmap(samsung->f0000_segment); |
| 979 | |
| 980 | error_cant_map: |
| 981 | kfree(samsung); |
| 982 | samsung = NULL; |
Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 983 | return -EINVAL; |
| 984 | } |
| 985 | |
| 986 | static void __exit samsung_exit(void) |
| 987 | { |
Corentin Chary | a6df489 | 2011-11-26 10:59:58 +0100 | [diff] [blame^] | 988 | const struct sabi_commands *commands = &samsung->config->commands; |
Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 989 | |
Corentin Chary | a6df489 | 2011-11-26 10:59:58 +0100 | [diff] [blame^] | 990 | /* Turn off "Linux" mode in the BIOS */ |
| 991 | if (commands->set_linux != 0xff) |
| 992 | sabi_set_command(commands->set_linux, 0x80); |
| 993 | |
| 994 | device_remove_file(&samsung->pdev->dev, &dev_attr_performance_level); |
| 995 | backlight_device_unregister(samsung->backlight_device); |
Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 996 | destroy_wireless(); |
Corentin Chary | a6df489 | 2011-11-26 10:59:58 +0100 | [diff] [blame^] | 997 | iounmap(samsung->sabi_iface); |
| 998 | iounmap(samsung->f0000_segment); |
| 999 | platform_device_unregister(samsung->pdev); |
| 1000 | kfree(samsung); |
| 1001 | samsung = NULL; |
Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 1002 | } |
| 1003 | |
| 1004 | module_init(samsung_init); |
| 1005 | module_exit(samsung_exit); |
| 1006 | |
| 1007 | MODULE_AUTHOR("Greg Kroah-Hartman <gregkh@suse.de>"); |
| 1008 | MODULE_DESCRIPTION("Samsung Backlight driver"); |
| 1009 | MODULE_LICENSE("GPL"); |