target/linux/xburst/patches-2.6.35/022-add-n526-board-support.patch

   1 From 7c51f9f9bab723d2cf7ea458ea459cc392a753f7 Mon Sep 17 00:00:00 2001
   2 From: Lars-Peter Clausen <lars@metafoo.de>
   3 Date: Sat, 24 Apr 2010 17:25:23 +0200
   4 Subject: [PATCH] Add n526 board support
   5
   6 ---
   7  arch/mips/jz4740/Kconfig      |    4 +
   8  arch/mips/jz4740/Makefile     |    1 +
   9  arch/mips/jz4740/board-n526.c |  327 +++++++++++++++++++++++++++++++++++++++++
  10  3 files changed, 332 insertions(+), 0 deletions(-)
  11  create mode 100644 arch/mips/jz4740/board-n526.c
  12
  13 --- a/arch/mips/jz4740/Kconfig
  14 +++ b/arch/mips/jz4740/Kconfig
  15 @@ -10,6 +10,10 @@ config JZ4740_N516
  16         bool "Hanvon n516 eBook reader"
  17         select SOC_JZ4740
  18
  19 +config JZ4740_N526
  20 +       bool "Hanvon n526 eBook reader"
  21 +       select SOC_JZ4740
  22 +
  23  endchoice
  24
  25  config HAVE_PWM
  26 --- a/arch/mips/jz4740/Makefile
  27 +++ b/arch/mips/jz4740/Makefile
  28 @@ -13,6 +13,7 @@ obj-$(CONFIG_DEBUG_FS) += clock-debugfs.
  29
  30  obj-$(CONFIG_JZ4740_QI_LB60)   += board-qi_lb60.o
  31  obj-$(CONFIG_JZ4740_N516)      += board-n516.o board-n516-display.o
  32 +obj-$(CONFIG_JZ4740_N526)      += board-n526.o
  33
  34  # PM support
  35
  36 --- /dev/null
  37 +++ b/arch/mips/jz4740/board-n526.c
  38 @@ -0,0 +1,327 @@
  39 +/*
  40 + *  Copyright (C) 2009, Lars-Peter Clausen <lars@metafoo.de>
  41 + *     N526 eBook reader support
  42 + *
  43 + *  This program is free software; you can redistribute         it and/or modify it
  44 + *  under  the terms of         the GNU General  Public License as published by the
  45 + *  Free Software Foundation;  either version 2 of the License, or (at your
  46 + *  option) any later version.
  47 + *
  48 + *  You should have received a copy of the  GNU General Public License along
  49 + *  with this program; if not, write  to the Free Software Foundation, Inc.,
  50 + *  675 Mass Ave, Cambridge, MA 02139, USA.
  51 + *
  52 + */
  53 +
  54 +#include <linux/kernel.h>
  55 +#include <linux/init.h>
  56 +#include <linux/gpio.h>
  57 +
  58 +
  59 +#include <linux/power_supply.h>
  60 +
  61 +#include <video/broadsheetfb.h>
  62 +#include <linux/delay.h>
  63 +#include <linux/interrupt.h>
  64 +
  65 +#include <linux/input.h>
  66 +#include <linux/gpio_keys.h>
  67 +
  68 +#include <linux/i2c.h>
  69 +#include <linux/i2c-gpio.h>
  70 +
  71 +#include "clock.h"
  72 +
  73 +#include <asm/mach-jz4740/jz4740_mmc.h>
  74 +#include <asm/mach-jz4740/jz4740_nand.h>
  75 +#include <asm/mach-jz4740/jz4740_fb.h>
  76 +
  77 +#include <asm/mach-jz4740/platform.h>
  78 +
  79 +/* NAND */
  80 +static struct nand_ecclayout n526_ecclayout = {
  81 +/*     .eccbytes = 36,
  82 +       .eccpos = {
  83 +               6,  7,  8,  9,  10, 11, 12, 13,
  84 +               14, 15, 16, 17, 18, 19, 20, 21,
  85 +               22, 23, 24, 25, 26, 27, 28, 29,
  86 +               30, 31, 32, 33, 34, 35, 36, 37,
  87 +               38, 39, 40, 41},*/
  88 +       .oobfree = {
  89 +               {.offset = 2,
  90 +                .length = 4},
  91 +               {.offset = 42,
  92 +                .length = 22}}
  93 +};
  94 +
  95 +static struct mtd_partition n526_partitions[] = {
  96 +       { .name = "NAND BOOT partition",
  97 +         .offset = 0 * 0x100000,
  98 +         .size = 4 * 0x100000,
  99 +       },
 100 +       { .name = "NAND KERNEL partition",
 101 +         .offset = 4 * 0x100000,
 102 +         .size = 4 * 0x100000,
 103 +       },
 104 +       { .name = "NAND ROOTFS partition",
 105 +         .offset = 16 * 0x100000,
 106 +         .size = 498 * 0x100000,
 107 +       },
 108 +};
 109 +
 110 +static struct jz_nand_platform_data n526_nand_pdata = {
 111 +       .ecc_layout = &n526_ecclayout,
 112 +       .partitions = n526_partitions,
 113 +       .num_partitions = ARRAY_SIZE(n526_partitions),
 114 +       .busy_gpio = 94,
 115 +};
 116 +
 117 +static struct jz4740_mmc_platform_data n526_mmc_pdata = {
 118 +       .gpio_card_detect       = JZ_GPIO_PORTD(7),
 119 +       .card_detect_active_low = 1,
 120 +       .gpio_read_only         = -1,
 121 +       .gpio_power             = JZ_GPIO_PORTD(17),
 122 +       .power_active_low = 1,
 123 +};
 124 +
 125 +static struct gpio_led n526_leds[] = {
 126 +       {
 127 +               .name = "n526:blue:power",
 128 +               .gpio = JZ_GPIO_PORTD(28),
 129 +               .default_state = LEDS_GPIO_DEFSTATE_ON,
 130 +       }
 131 +};
 132 +
 133 +static struct gpio_led_platform_data n526_leds_pdata = {
 134 +       .leds = n526_leds,
 135 +       .num_leds = ARRAY_SIZE(n526_leds),
 136 +};
 137 +
 138 +static struct platform_device n526_leds_device = {
 139 +       .name = "leds-gpio",
 140 +       .id = -1,
 141 +       .dev = {
 142 +               .platform_data = &n526_leds_pdata,
 143 +       },
 144 +};
 145 +
 146 +static void __init board_gpio_setup(void)
 147 +{
 148 +       /* We only need to enable/disable pullup here for pins used in generic
 149 +        * drivers. Everything else is done by the drivers themselfs. */
 150 +       jz_gpio_disable_pullup(JZ_GPIO_PORTD(17));
 151 +       jz_gpio_enable_pullup(JZ_GPIO_PORTD(7));
 152 +       jz_gpio_disable_pullup(JZ_GPIO_PORTC(19));
 153 +       jz_gpio_disable_pullup(JZ_GPIO_PORTC(20));
 154 +       jz_gpio_disable_pullup(JZ_GPIO_PORTC(21));
 155 +       jz_gpio_disable_pullup(JZ_GPIO_PORTC(23));
 156 +}
 157 +
 158 +
 159 +static const int n526_eink_ctrl_gpios[] = {
 160 +       0,
 161 +       JZ_GPIO_PORTC(23),
 162 +       JZ_GPIO_PORTC(19),
 163 +       JZ_GPIO_PORTC(20),
 164 +};
 165 +
 166 +static void n526_eink_set_ctl(struct broadsheetfb_par * par, unsigned char ctrl, u8
 167 +value)
 168 +{
 169 +       gpio_set_value(n526_eink_ctrl_gpios[ctrl], value);
 170 +}
 171 +
 172 +
 173 +static int n526_eink_wait(struct broadsheetfb_par *par)
 174 +{
 175 +       wait_event(par->waitq, gpio_get_value(JZ_GPIO_PORTB(17)));
 176 +
 177 +       return 0;
 178 +}
 179 +
 180 +static u16 n526_eink_get_hdb(struct broadsheetfb_par *par)
 181 +{
 182 +       u16 value = 0;
 183 +       jz_gpio_port_direction_input(JZ_GPIO_PORTC(0), 0xffff);
 184 +       gpio_set_value(JZ_GPIO_PORTC(21), 0);
 185 +       mdelay(100);
 186 +
 187 +       value = jz_gpio_port_get_value(JZ_GPIO_PORTC(0), 0xffff);
 188 +
 189 +       gpio_set_value(JZ_GPIO_PORTC(21), 1);
 190 +       jz_gpio_port_direction_output(JZ_GPIO_PORTC(0), 0xffff);
 191 +       return value;
 192 +}
 193 +
 194 +static void n526_eink_set_hdb(struct broadsheetfb_par *par, u16 value)
 195 +{
 196 +       jz_gpio_port_set_value(JZ_GPIO_PORTC(0), value, 0xffff);
 197 +}
 198 +
 199 +static int n526_eink_init(struct broadsheetfb_par *par)
 200 +{
 201 +       int i;
 202 +
 203 +       gpio_request(JZ_GPIO_PORTD(1), "display reset");
 204 +       gpio_direction_output(JZ_GPIO_PORTD(1), 1);
 205 +       mdelay(10);
 206 +       gpio_set_value(JZ_GPIO_PORTD(1), 0);
 207 +
 208 +       gpio_request(JZ_GPIO_PORTB(18), "eink enable");
 209 +       gpio_direction_output(JZ_GPIO_PORTB(18), 0);
 210 +
 211 +       gpio_request(JZ_GPIO_PORTB(29), "foobar");
 212 +       gpio_direction_output(JZ_GPIO_PORTB(29), 1);
 213 +
 214 +       for(i = 1; i < ARRAY_SIZE(n526_eink_ctrl_gpios); ++i) {
 215 +               gpio_request(n526_eink_ctrl_gpios[i], "eink display ctrl");
 216 +               gpio_direction_output(n526_eink_ctrl_gpios[i], 0);
 217 +       }
 218 +
 219 +       gpio_request(JZ_GPIO_PORTC(22), "foobar");
 220 +       gpio_direction_input(JZ_GPIO_PORTC(22));
 221 +       gpio_request(JZ_GPIO_PORTC(21), "eink nRD");
 222 +       gpio_direction_output(JZ_GPIO_PORTC(21), 1);
 223 +
 224 +       for(i = 0; i < 16; ++i) {
 225 +               gpio_request(JZ_GPIO_PORTC(i), "eink display data");
 226 +       }
 227 +       jz_gpio_port_direction_output(JZ_GPIO_PORTC(0), 0xffff);
 228 +
 229 +       gpio_set_value(JZ_GPIO_PORTB(18), 1);
 230 +
 231 +       return 0;
 232 +}
 233 +
 234 +static irqreturn_t n526_eink_busy_irq(int irq, void *devid)
 235 +{
 236 +       struct broadsheetfb_par *par = devid;
 237 +       wake_up(&par->waitq);
 238 +
 239 +       return IRQ_HANDLED;
 240 +}
 241 +
 242 +static int n526_eink_setup_irq(struct fb_info *info)
 243 +{
 244 +       int ret;
 245 +       struct broadsheetfb_par *par = info->par;
 246 +
 247 +       gpio_request(JZ_GPIO_PORTB(17), "eink busy");
 248 +       gpio_direction_input(JZ_GPIO_PORTB(17));
 249 +
 250 +       ret = request_irq(gpio_to_irq(JZ_GPIO_PORTB(17)), n526_eink_busy_irq,
 251 +                               IRQF_DISABLED | IRQF_TRIGGER_RISING,
 252 +                               "eink busyline", par);
 253 +       if (ret)
 254 +               printk("n526 display: Failed to request busyline irq: %d\n", ret);
 255 +       return 0;
 256 +}
 257 +
 258 +static void n526_eink_cleanup(struct broadsheetfb_par *par)
 259 +{
 260 +}
 261 +
 262 +static struct broadsheet_board broadsheet_pdata = {
 263 +       .owner = THIS_MODULE,
 264 +       .init = n526_eink_init,
 265 +       .wait_for_rdy = n526_eink_wait,
 266 +       .set_ctl = n526_eink_set_ctl,
 267 +       .set_hdb = n526_eink_set_hdb,
 268 +       .get_hdb = n526_eink_get_hdb,
 269 +       .cleanup = n526_eink_cleanup,
 270 +       .setup_irq = n526_eink_setup_irq,
 271 +};
 272 +
 273 +static struct platform_device n526_broadsheet_device = {
 274 +       .name = "broadsheetfb",
 275 +       .id = -1,
 276 +       .dev = {
 277 +               .platform_data = &broadsheet_pdata,
 278 +       },
 279 +};
 280 +
 281 +static struct gpio_keys_button qi_lb60_gpio_keys_buttons[] = {
 282 +       [0] = {
 283 +               .code           = KEY_ENTER,
 284 +               .gpio           = 0,
 285 +               .active_low     = 1,
 286 +               .desc           = "Power",
 287 +       },
 288 +};
 289 +
 290 +static struct gpio_keys_platform_data qi_lb60_gpio_keys_data = {
 291 +       .nbuttons = ARRAY_SIZE(qi_lb60_gpio_keys_buttons),
 292 +       .buttons = qi_lb60_gpio_keys_buttons,
 293 +};
 294 +
 295 +static struct platform_device qi_lb60_gpio_keys = {
 296 +       .name = "gpio-keys",
 297 +       .id =   -1,
 298 +       .dev = {
 299 +               .platform_data = &qi_lb60_gpio_keys_data,
 300 +       }
 301 +};
 302 +
 303 +static struct i2c_gpio_platform_data n526_i2c_pdata = {
 304 +       .sda_pin = JZ_GPIO_PORTD(23),
 305 +       .scl_pin = JZ_GPIO_PORTD(24),
 306 +       .udelay = 2,
 307 +       .timeout = 3 * HZ,
 308 +};
 309 +
 310 +static struct platform_device n526_i2c_device = {
 311 +       .name = "i2c-gpio",
 312 +       .id = -1,
 313 +       .dev = {
 314 +               .platform_data = &n526_i2c_pdata,
 315 +       },
 316 +};
 317 +
 318 +static struct i2c_board_info n526_i2c_board_info = {
 319 +       .type = "n526-lpc",
 320 +       .addr = 0x54,
 321 +};
 322 +
 323 +static struct platform_device *jz_platform_devices[] __initdata = {
 324 +       &jz4740_usb_ohci_device,
 325 +       &jz4740_udc_device,
 326 +       &jz4740_mmc_device,
 327 +       &jz4740_nand_device,
 328 +       &jz4740_i2s_device,
 329 +       &jz4740_codec_device,
 330 +       &jz4740_rtc_device,
 331 +       &n526_leds_device,
 332 +       &n526_broadsheet_device,
 333 +       &qi_lb60_gpio_keys,
 334 +       &n526_i2c_device,
 335 +};
 336 +
 337 +static int __init n526_init_platform_devices(void)
 338 +{
 339 +
 340 +       jz4740_nand_device.dev.platform_data = &n526_nand_pdata;
 341 +       jz4740_mmc_device.dev.platform_data = &n526_mmc_pdata;
 342 +
 343 +       n526_i2c_board_info.irq = gpio_to_irq(JZ_GPIO_PORTD(14)),
 344 +       i2c_register_board_info(0, &n526_i2c_board_info, 1);
 345 +
 346 +       return platform_add_devices(jz_platform_devices,
 347 +                                       ARRAY_SIZE(jz_platform_devices));
 348 +
 349 +}
 350 +
 351 +struct jz4740_clock_board_data jz4740_clock_bdata = {
 352 +       .ext_rate = 12000000,
 353 +       .rtc_rate = 32768,
 354 +};
 355 +
 356 +static int __init n526_board_setup(void)
 357 +{
 358 +       board_gpio_setup();
 359 +
 360 +       if (n526_init_platform_devices())
 361 +               panic("Failed to initalize platform devices\n");
 362 +
 363 +       return 0;
 364 +}
 365 +arch_initcall(n526_board_setup);