target/linux/xburst/patches-2.6.36/007-add-n526-board-support.patch

   1 From c1eb3a8a799e859b95725b85281c8460e6455135 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      |    3 +
   8  arch/mips/jz4740/Makefile     |    1 +
   9  arch/mips/jz4740/board-n526.c |  320 +++++++++++++++++++++++++++++++++++++++++
  10  3 files changed, 324 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 @@ -9,6 +9,9 @@ config JZ4740_QI_LB60
  16  config JZ4740_N516
  17         bool "Hanvon n516 eBook reader"
  18
  19 +config JZ4740_N526
  20 +       bool "Hanvon n526 eBook reader"
  21 +
  22  endchoice
  23
  24  config HAVE_PWM
  25 --- a/arch/mips/jz4740/Makefile
  26 +++ b/arch/mips/jz4740/Makefile
  27 @@ -13,6 +13,7 @@ obj-$(CONFIG_DEBUG_FS) += clock-debugfs.
  28
  29  obj-$(CONFIG_JZ4740_QI_LB60)   += board-qi_lb60.o
  30  obj-$(CONFIG_JZ4740_N516)      += board-n516.o board-n516-display.o
  31 +obj-$(CONFIG_JZ4740_N526)      += board-n526.o
  32
  33  # PM support
  34
  35 --- /dev/null
  36 +++ b/arch/mips/jz4740/board-n526.c
  37 @@ -0,0 +1,320 @@
  38 +/*
  39 + *  Copyright (C) 2009, Lars-Peter Clausen <lars@metafoo.de>
  40 + *     N526 eBook reader support
  41 + *
  42 + *  This program is free software; you can redistribute         it and/or modify it
  43 + *  under  the terms of         the GNU General  Public License as published by the
  44 + *  Free Software Foundation;  either version 2 of the License, or (at your
  45 + *  option) any later version.
  46 + *
  47 + *  You should have received a copy of the  GNU General Public License along
  48 + *  with this program; if not, write  to the Free Software Foundation, Inc.,
  49 + *  675 Mass Ave, Cambridge, MA 02139, USA.
  50 + *
  51 + */
  52 +
  53 +#include <linux/kernel.h>
  54 +#include <linux/init.h>
  55 +#include <linux/gpio.h>
  56 +
  57 +#include <linux/mutex.h>
  58 +#include <linux/wait.h>
  59 +#include <video/broadsheetfb.h>
  60 +#include <linux/delay.h>
  61 +#include <linux/interrupt.h>
  62 +
  63 +#include <linux/input.h>
  64 +#include <linux/gpio_keys.h>
  65 +
  66 +#include <linux/leds.h>
  67 +
  68 +#include <linux/i2c.h>
  69 +
  70 +#include "clock.h"
  71 +
  72 +#include <asm/mach-jz4740/jz4740_mmc.h>
  73 +#include <asm/mach-jz4740/jz4740_nand.h>
  74 +#include <asm/mach-jz4740/jz4740_fb.h>
  75 +
  76 +#include <asm/mach-jz4740/platform.h>
  77 +
  78 +/* NAND */
  79 +static struct nand_ecclayout n526_ecclayout = {
  80 +/*     .eccbytes = 36,
  81 +       .eccpos = {
  82 +               6,  7,  8,  9,  10, 11, 12, 13,
  83 +               14, 15, 16, 17, 18, 19, 20, 21,
  84 +               22, 23, 24, 25, 26, 27, 28, 29,
  85 +               30, 31, 32, 33, 34, 35, 36, 37,
  86 +               38, 39, 40, 41},*/
  87 +       .oobfree = {
  88 +               {
  89 +                       .offset = 2,
  90 +                       .length = 4,
  91 +               },
  92 +               {
  93 +                       .offset = 42,
  94 +                       .length = 22,
  95 +               },
  96 +       }
  97 +};
  98 +
  99 +static struct mtd_partition n526_partitions[] = {
 100 +       { .name = "NAND BOOT partition",
 101 +         .offset = 0 * 0x100000,
 102 +         .size = 4 * 0x100000,
 103 +       },
 104 +       { .name = "NAND KERNEL partition",
 105 +         .offset = 4 * 0x100000,
 106 +         .size = 4 * 0x100000,
 107 +       },
 108 +       { .name = "NAND ROOTFS partition",
 109 +         .offset = 16 * 0x100000,
 110 +         .size = 498 * 0x100000,
 111 +       },
 112 +};
 113 +
 114 +static struct jz_nand_platform_data n526_nand_pdata = {
 115 +       .ecc_layout = &n526_ecclayout,
 116 +       .partitions = n526_partitions,
 117 +       .num_partitions = ARRAY_SIZE(n526_partitions),
 118 +       .busy_gpio = JZ_GPIO_PORTC(30),
 119 +};
 120 +
 121 +static struct jz4740_mmc_platform_data n526_mmc_pdata = {
 122 +       .gpio_card_detect       = JZ_GPIO_PORTD(7),
 123 +       .card_detect_active_low = 1,
 124 +       .gpio_read_only         = -1,
 125 +       .gpio_power             = JZ_GPIO_PORTD(17),
 126 +       .power_active_low       = 1,
 127 +};
 128 +
 129 +static struct gpio_led n526_leds[] = {
 130 +       {
 131 +               .name = "n526:blue:power",
 132 +               .gpio = JZ_GPIO_PORTD(28),
 133 +               .default_state = LEDS_GPIO_DEFSTATE_ON,
 134 +       }
 135 +};
 136 +
 137 +static struct gpio_led_platform_data n526_leds_pdata = {
 138 +       .leds = n526_leds,
 139 +       .num_leds = ARRAY_SIZE(n526_leds),
 140 +};
 141 +
 142 +static struct platform_device n526_leds_device = {
 143 +       .name = "leds-gpio",
 144 +       .id = -1,
 145 +       .dev = {
 146 +               .platform_data = &n526_leds_pdata,
 147 +       },
 148 +};
 149 +
 150 +static void __init board_gpio_setup(void)
 151 +{
 152 +       /* We only need to enable/disable pullup here for pins used in generic
 153 +        * drivers. Everything else is done by the drivers themselfs. */
 154 +       jz_gpio_disable_pullup(JZ_GPIO_PORTD(17));
 155 +       jz_gpio_enable_pullup(JZ_GPIO_PORTD(7));
 156 +       jz_gpio_disable_pullup(JZ_GPIO_PORTC(19));
 157 +       jz_gpio_disable_pullup(JZ_GPIO_PORTC(20));
 158 +       jz_gpio_disable_pullup(JZ_GPIO_PORTC(21));
 159 +       jz_gpio_disable_pullup(JZ_GPIO_PORTC(23));
 160 +}
 161 +
 162 +
 163 +static const int n526_eink_ctrl_gpios[] = {
 164 +       0,
 165 +       JZ_GPIO_PORTC(23),
 166 +       JZ_GPIO_PORTC(19),
 167 +       JZ_GPIO_PORTC(20),
 168 +};
 169 +
 170 +static void n526_eink_set_ctl(struct broadsheetfb_par * par, unsigned char ctrl, u8
 171 +value)
 172 +{
 173 +       gpio_set_value(n526_eink_ctrl_gpios[ctrl], value);
 174 +}
 175 +
 176 +
 177 +static int n526_eink_wait(struct broadsheetfb_par *par)
 178 +{
 179 +       wait_event(par->waitq, gpio_get_value(JZ_GPIO_PORTB(17)));
 180 +
 181 +       return 0;
 182 +}
 183 +
 184 +static u16 n526_eink_get_hdb(struct broadsheetfb_par *par)
 185 +{
 186 +       u16 value = 0;
 187 +       jz_gpio_port_direction_input(JZ_GPIO_PORTC(0), 0xffff);
 188 +       gpio_set_value(JZ_GPIO_PORTC(21), 0);
 189 +       mdelay(100);
 190 +
 191 +       value = jz_gpio_port_get_value(JZ_GPIO_PORTC(0), 0xffff);
 192 +
 193 +       gpio_set_value(JZ_GPIO_PORTC(21), 1);
 194 +       jz_gpio_port_direction_output(JZ_GPIO_PORTC(0), 0xffff);
 195 +       return value;
 196 +}
 197 +
 198 +static void n526_eink_set_hdb(struct broadsheetfb_par *par, u16 value)
 199 +{
 200 +       jz_gpio_port_set_value(JZ_GPIO_PORTC(0), value, 0xffff);
 201 +}
 202 +
 203 +static int n526_eink_init(struct broadsheetfb_par *par)
 204 +{
 205 +       int i;
 206 +
 207 +       gpio_request(JZ_GPIO_PORTD(1), "display reset");
 208 +       gpio_direction_output(JZ_GPIO_PORTD(1), 1);
 209 +       mdelay(10);
 210 +       gpio_set_value(JZ_GPIO_PORTD(1), 0);
 211 +
 212 +       gpio_request(JZ_GPIO_PORTB(18), "eink enable");
 213 +       gpio_direction_output(JZ_GPIO_PORTB(18), 0);
 214 +
 215 +       gpio_request(JZ_GPIO_PORTB(29), "foobar");
 216 +       gpio_direction_output(JZ_GPIO_PORTB(29), 1);
 217 +
 218 +       for(i = 1; i < ARRAY_SIZE(n526_eink_ctrl_gpios); ++i) {
 219 +               gpio_request(n526_eink_ctrl_gpios[i], "eink display ctrl");
 220 +               gpio_direction_output(n526_eink_ctrl_gpios[i], 0);
 221 +       }
 222 +
 223 +       gpio_request(JZ_GPIO_PORTC(22), "foobar");
 224 +       gpio_direction_input(JZ_GPIO_PORTC(22));
 225 +       gpio_request(JZ_GPIO_PORTC(21), "eink nRD");
 226 +       gpio_direction_output(JZ_GPIO_PORTC(21), 1);
 227 +
 228 +       for(i = 0; i < 16; ++i) {
 229 +               gpio_request(JZ_GPIO_PORTC(i), "eink display data");
 230 +       }
 231 +       jz_gpio_port_direction_output(JZ_GPIO_PORTC(0), 0xffff);
 232 +
 233 +       gpio_set_value(JZ_GPIO_PORTB(18), 1);
 234 +
 235 +       return 0;
 236 +}
 237 +
 238 +static irqreturn_t n526_eink_busy_irq(int irq, void *devid)
 239 +{
 240 +       struct broadsheetfb_par *par = devid;
 241 +       wake_up(&par->waitq);
 242 +
 243 +       return IRQ_HANDLED;
 244 +}
 245 +
 246 +static int n526_eink_setup_irq(struct fb_info *info)
 247 +{
 248 +       int ret;
 249 +       struct broadsheetfb_par *par = info->par;
 250 +
 251 +       gpio_request(JZ_GPIO_PORTB(17), "eink busy");
 252 +       gpio_direction_input(JZ_GPIO_PORTB(17));
 253 +
 254 +       ret = request_irq(gpio_to_irq(JZ_GPIO_PORTB(17)), n526_eink_busy_irq,
 255 +                               IRQF_DISABLED | IRQF_TRIGGER_RISING,
 256 +                               "eink busyline", par);
 257 +       if (ret)
 258 +               printk("n526 display: Failed to request busyline irq: %d\n", ret);
 259 +       return 0;
 260 +}
 261 +
 262 +static void n526_eink_cleanup(struct broadsheetfb_par *par)
 263 +{
 264 +}
 265 +
 266 +static struct broadsheet_board broadsheet_pdata = {
 267 +       .owner = THIS_MODULE,
 268 +       .init = n526_eink_init,
 269 +       .wait_for_rdy = n526_eink_wait,
 270 +       .set_ctl = n526_eink_set_ctl,
 271 +       .set_hdb = n526_eink_set_hdb,
 272 +       .get_hdb = n526_eink_get_hdb,
 273 +       .cleanup = n526_eink_cleanup,
 274 +       .setup_irq = n526_eink_setup_irq,
 275 +};
 276 +
 277 +static struct platform_device n526_broadsheet_device = {
 278 +       .name = "broadsheetfb",
 279 +       .id = -1,
 280 +       .dev = {
 281 +               .platform_data = &broadsheet_pdata,
 282 +       },
 283 +};
 284 +
 285 +/* Buttons */
 286 +static struct gpio_keys_button n526_gpio_keys_buttons[] = {
 287 +       [0] = {
 288 +               .code           = KEY_ENTER,
 289 +               .gpio           = 0,
 290 +               .active_low     = 1,
 291 +               .desc           = "Power",
 292 +       },
 293 +};
 294 +
 295 +static struct gpio_keys_platform_data n526_gpio_keys_data = {
 296 +       .nbuttons = ARRAY_SIZE(n526_gpio_keys_buttons),
 297 +       .buttons = n526_gpio_keys_buttons,
 298 +};
 299 +
 300 +static struct platform_device n526_gpio_keys_device = {
 301 +       .name = "gpio-keys",
 302 +       .id =   -1,
 303 +       .dev = {
 304 +               .platform_data = &n526_gpio_keys_data,
 305 +       }
 306 +};
 307 +
 308 +static struct i2c_board_info n526_i2c_board_info = {
 309 +       .type = "n526-lpc",
 310 +       .addr = 0x54,
 311 +};
 312 +
 313 +static struct platform_device *n526_platform_devices[] __initdata = {
 314 +       &jz4740_usb_ohci_device,
 315 +       &jz4740_udc_device,
 316 +       &jz4740_mmc_device,
 317 +       &jz4740_nand_device,
 318 +       &jz4740_i2s_device,
 319 +       &jz4740_codec_device,
 320 +       &jz4740_pcm_device,
 321 +       &jz4740_rtc_device,
 322 +       &jz4740_i2c_device,
 323 +       &n526_leds_device,
 324 +       &n526_broadsheet_device,
 325 +       &n526_gpio_keys_device,
 326 +};
 327 +
 328 +static int __init n526_init_platform_devices(void)
 329 +{
 330 +       jz4740_nand_device.dev.platform_data = &n526_nand_pdata;
 331 +       jz4740_mmc_device.dev.platform_data = &n526_mmc_pdata;
 332 +
 333 +       jz4740_serial_device_register();
 334 +
 335 +       n526_i2c_board_info.irq = gpio_to_irq(JZ_GPIO_PORTD(14)),
 336 +       i2c_register_board_info(0, &n526_i2c_board_info, 1);
 337 +
 338 +       return platform_add_devices(n526_platform_devices,
 339 +                                       ARRAY_SIZE(n526_platform_devices));
 340 +
 341 +}
 342 +
 343 +struct jz4740_clock_board_data jz4740_clock_bdata = {
 344 +       .ext_rate = 12000000,
 345 +       .rtc_rate = 32768,
 346 +};
 347 +
 348 +static int __init n526_board_setup(void)
 349 +{
 350 +       board_gpio_setup();
 351 +
 352 +       if (n526_init_platform_devices())
 353 +               panic("Failed to initalize platform devices\n");
 354 +
 355 +       return 0;
 356 +}
 357 +arch_initcall(n526_board_setup);