diff options
Diffstat (limited to 'target/linux/xburst/files-2.6.32/arch/mips/jz4740/board-n526.c')
| -rw-r--r-- | target/linux/xburst/files-2.6.32/arch/mips/jz4740/board-n526.c | 346 |
1 files changed, 346 insertions, 0 deletions
diff --git a/target/linux/xburst/files-2.6.32/arch/mips/jz4740/board-n526.c b/target/linux/xburst/files-2.6.32/arch/mips/jz4740/board-n526.c new file mode 100644 index 0000000000..fa46278072 --- /dev/null +++ b/target/linux/xburst/files-2.6.32/arch/mips/jz4740/board-n526.c @@ -0,0 +1,346 @@ +/* + * Copyright (C) 2009, Lars-Peter Clausen <lars@metafoo.de> + * N526 eBook reader support + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 675 Mass Ave, Cambridge, MA 02139, USA. + * + */ + +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/gpio.h> + +#include <asm/mach-jz4740/platform.h> + +#include <linux/mtd/jz4740_nand.h> +#include <linux/jz4740_fb.h> +#include <linux/power_supply.h> +#include <linux/power/jz4740-battery.h> +#include <linux/mmc/jz4740_mmc.h> + +#include <video/broadsheetfb.h> +#include <linux/delay.h> +#include <linux/interrupt.h> + +#include <linux/input.h> +#include <linux/gpio_keys.h> + +#include <linux/i2c.h> +#include <linux/i2c-gpio.h> + +/* NAND */ +static struct nand_ecclayout n526_ecclayout = { + .eccbytes = 36, + .eccpos = { + 6, 7, 8, 9, 10, 11, 12, 13, + 14, 15, 16, 17, 18, 19, 20, 21, + 22, 23, 24, 25, 26, 27, 28, 29, + 30, 31, 32, 33, 34, 35, 36, 37, + 38, 39, 40, 41}, + .oobfree = { + {.offset = 2, + .length = 4}, + {.offset = 42, + .length = 22}} +}; + +static struct mtd_partition n526_partitions[] = { + { .name = "NAND BOOT partition", + .offset = 0 * 0x100000, + .size = 4 * 0x100000, + }, + { .name = "NAND KERNEL partition", + .offset = 4 * 0x100000, + .size = 4 * 0x100000, + }, + { .name = "NAND ROOTFS partition", + .offset = 16 * 0x100000, + .size = 498 * 0x100000, + }, +}; + +static struct jz_nand_platform_data n526_nand_pdata = { + .ecc_layout = &n526_ecclayout, + .partitions = n526_partitions, + .num_partitions = ARRAY_SIZE(n526_partitions), + .busy_gpio = 94, +}; + + +/* Battery */ +/*static struct jz_batt_info n526_battery_pdata = { + .dc_dect_gpio = GPIO_DC_DETE_N, + .usb_dect_gpio = GPIO_USB_DETE, + .charg_stat_gpio = GPIO_CHARG_STAT_N, + + .min_voltag = 3600000, + .max_voltag = 4200000, + .batt_tech = POWER_SUPPLY_TECHNOLOGY_LIPO, +};*/ + + +static struct jz4740_mmc_platform_data n526_mmc_pdata = { + .gpio_card_detect = JZ_GPIO_PORTD(7), + .card_detect_active_low = 1, + .gpio_read_only = -1, + .gpio_power = JZ_GPIO_PORTD(17), + .power_active_low = 1, +}; + +static struct gpio_led n526_leds[] = { + { + .name = "n526:blue:power", + .gpio = JZ_GPIO_PORTD(28), + .default_state = LEDS_GPIO_DEFSTATE_ON, + } +}; + +static struct gpio_led_platform_data n526_leds_pdata = { + .leds = n526_leds, + .num_leds = ARRAY_SIZE(n526_leds), +}; + +static struct platform_device n526_leds_device = { + .name = "leds-gpio", + .id = -1, + .dev = { + .platform_data = &n526_leds_pdata, + }, +}; + +static void __init board_gpio_setup(void) +{ + /* We only need to enable/disable pullup here for pins used in generic + * drivers. Everything else is done by the drivers themselfs. */ + jz_gpio_disable_pullup(JZ_GPIO_PORTD(17)); + jz_gpio_enable_pullup(JZ_GPIO_PORTD(7)); + jz_gpio_disable_pullup(JZ_GPIO_PORTC(19)); + jz_gpio_disable_pullup(JZ_GPIO_PORTC(20)); + jz_gpio_disable_pullup(JZ_GPIO_PORTC(21)); + jz_gpio_disable_pullup(JZ_GPIO_PORTC(23)); +} + + +static const int n526_eink_ctrl_gpios[] = { + 0, + JZ_GPIO_PORTC(23), + JZ_GPIO_PORTC(19), + JZ_GPIO_PORTC(20), +}; + +static void n526_eink_set_ctl(struct broadsheetfb_par * par, unsigned char ctrl, u8 +value) +{ + gpio_set_value(n526_eink_ctrl_gpios[ctrl], value); +} + + +static int n526_eink_wait(struct broadsheetfb_par *par) +{ + int i = 0; + wait_event(par->waitq, gpio_get_value(JZ_GPIO_PORTB(17))); + + return 0; +} + +static u16 n526_eink_get_hdb(struct broadsheetfb_par *par) +{ + u16 value = 0; + jz_gpio_port_direction_input(JZ_GPIO_PORTC(0), 0xffff); + gpio_set_value(JZ_GPIO_PORTC(21), 0); + mdelay(100); + + value = jz_gpio_port_get_value(JZ_GPIO_PORTC(0), 0xffff); + + gpio_set_value(JZ_GPIO_PORTC(21), 1); + jz_gpio_port_direction_output(JZ_GPIO_PORTC(0), 0xffff); + return value; +} + +static void n526_eink_set_hdb(struct broadsheetfb_par *par, u16 value) +{ + jz_gpio_port_set_value(JZ_GPIO_PORTC(0), value, 0xffff); +} + +static int n526_eink_init(struct broadsheetfb_par *par) +{ + int i = 0; + + gpio_request(JZ_GPIO_PORTD(1), "display reset?"); + gpio_direction_output(JZ_GPIO_PORTD(1), 1); + mdelay(10); + gpio_set_value(JZ_GPIO_PORTD(1), 0); + + gpio_request(JZ_GPIO_PORTB(18), "foobar"); + gpio_direction_output(JZ_GPIO_PORTB(18), 0); + + gpio_request(JZ_GPIO_PORTB(29), "foobar"); + gpio_direction_output(JZ_GPIO_PORTB(29), 1); + + + for(i = 1; i < ARRAY_SIZE(n526_eink_ctrl_gpios); ++i) { + gpio_request(n526_eink_ctrl_gpios[i], "foobar"); + gpio_direction_output(n526_eink_ctrl_gpios[i], 0); + } + + gpio_request(JZ_GPIO_PORTC(22), "foobar"); + gpio_direction_input(JZ_GPIO_PORTC(22)); + gpio_request(JZ_GPIO_PORTC(21), "foobar"); + gpio_direction_output(JZ_GPIO_PORTC(21), 1); + + for(i = 0; i < 16; ++i) { + gpio_request(JZ_GPIO_PORTC(i), "display data"); + } + jz_gpio_port_direction_output(JZ_GPIO_PORTC(0), 0xffff); + + gpio_direction_output(JZ_GPIO_PORTB(18), 1); + + return 0; +} + +static irqreturn_t n526_eink_busy_irq(int irq, void *devid) +{ + struct broadsheetfb_par *par = devid; + wake_up(&par->waitq); + + return IRQ_HANDLED; +} + +static int n526_eink_setup_irq(struct fb_info *info) +{ + int ret; + struct broadsheetfb_par *par = info->par; + + gpio_request(JZ_GPIO_PORTB(17), "foobar"); + gpio_direction_input(JZ_GPIO_PORTB(17)); + + ret = request_irq(gpio_to_irq(JZ_GPIO_PORTB(17)), n526_eink_busy_irq, + IRQF_DISABLED | IRQF_TRIGGER_RISING, + "eInk busyline", par); + if (ret) + printk("n526 display: Failed to request busyline irq: %d\n", ret); + return 0; +} + +static void n526_eink_cleanup(struct broadsheetfb_par *par) +{ +} + +static struct broadsheet_board broadsheet_pdata = { + .owner = THIS_MODULE, + .init = n526_eink_init, + .wait_for_rdy = n526_eink_wait, + .set_ctl = n526_eink_set_ctl, + .set_hdb = n526_eink_set_hdb, + .get_hdb = n526_eink_get_hdb, + .cleanup = n526_eink_cleanup, + .setup_irq = n526_eink_setup_irq, +}; + +static struct platform_device n526_broadsheet_device = { + .name = "broadsheetfb", + .id = -1, + .dev = { + .platform_data = &broadsheet_pdata, + }, +}; + +static struct gpio_keys_button qi_lb60_gpio_keys_buttons[] = { + [0] = { + .code = KEY_ENTER, + .gpio = 0, + .active_low = 1, + .desc = "Power", + }, +}; + +static struct gpio_keys_platform_data qi_lb60_gpio_keys_data = { + .nbuttons = ARRAY_SIZE(qi_lb60_gpio_keys_buttons), + .buttons = qi_lb60_gpio_keys_buttons, +}; + +static struct platform_device qi_lb60_gpio_keys = { + .name = "gpio-keys", + .id = -1, + .dev = { + .platform_data = &qi_lb60_gpio_keys_data, + } +}; + +static struct i2c_gpio_platform_data n526_i2c_pdata = { + .sda_pin = JZ_GPIO_PORTD(23), + .scl_pin = JZ_GPIO_PORTD(24), + .udelay = 2, + .timeout = 3 * HZ, +}; + +static struct platform_device n526_i2c_device = { + .name = "i2c-gpio", + .id = -1, + .dev = { + .platform_data = &n526_i2c_pdata, + }, +}; + +static struct i2c_board_info n526_i2c_board_info = { + .type = "n526-lpc", + .addr = 0x54, +}; + + +static struct platform_device *jz_platform_devices[] __initdata = { + &jz4740_usb_ohci_device, + &jz4740_usb_gdt_device, + &jz4740_mmc_device, + &jz4740_nand_device, + &jz4740_i2s_device, + &jz4740_codec_device, + &jz4740_rtc_device, + &n526_leds_device, + &n526_broadsheet_device, + &qi_lb60_gpio_keys, + &n526_i2c_device, +}; + + +static int __init n526_init_platform_devices(void) +{ + + jz4740_nand_device.dev.platform_data = &n526_nand_pdata; +/* jz4740_battery_device.dev.platform_data = &n526_battery_pdata;*/ + jz4740_mmc_device.dev.platform_data = &n526_mmc_pdata; + + n526_i2c_board_info.irq = gpio_to_irq(JZ_GPIO_PORTD(14)), + i2c_register_board_info(0, &n526_i2c_board_info, 1); + + return platform_add_devices(jz_platform_devices, + ARRAY_SIZE(jz_platform_devices)); + +} + + +extern int jz_gpiolib_init(void); +extern int jz_init_clocks(unsigned long extal); + +static int __init n526_board_setup(void) +{ + if (jz_gpiolib_init()) + panic("Failed to initalize jz gpio\n"); + jz_init_clocks(12000000); + + board_gpio_setup(); + + if (n526_init_platform_devices()) + panic("Failed to initalize platform devices\n"); + + return 0; +} + +arch_initcall(n526_board_setup); |