--- /dev/null
+/*
+ * 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);
projects / openwrt / svn-archive / archive.git / blobdiff