mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-11-15 10:14:04 +02:00
474eca73a8
clocks off which arn't handeld by their subsystems yet. git-svn-id: svn://svn.openwrt.org/openwrt/trunk@19984 3c298f89-4303-0410-b956-a3cf2f4a3e73
334 lines
7.7 KiB
C
334 lines
7.7 KiB
C
/*
|
|
* 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/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>
|
|
|
|
#include "clock.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,
|
|
};
|
|
|
|
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)
|
|
{
|
|
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;
|
|
|
|
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), "eink enable");
|
|
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], "eink display ctrl");
|
|
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), "eink nRD");
|
|
gpio_direction_output(JZ_GPIO_PORTC(21), 1);
|
|
|
|
for(i = 0; i < 16; ++i) {
|
|
gpio_request(JZ_GPIO_PORTC(i), "eink display data");
|
|
}
|
|
jz_gpio_port_direction_output(JZ_GPIO_PORTC(0), 0xffff);
|
|
|
|
gpio_set_value(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), "eink busy");
|
|
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_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));
|
|
|
|
}
|
|
|
|
struct jz4740_clock_board_data jz4740_clock_bdata = {
|
|
.ext_rate = 12000000,
|
|
.rtc_rate = 32768,
|
|
};
|
|
|
|
extern int jz_gpiolib_init(void);
|
|
|
|
static int __init n526_board_setup(void)
|
|
{
|
|
if (jz_gpiolib_init())
|
|
panic("Failed to initalize jz gpio\n");
|
|
|
|
jz4740_clock_init();
|
|
board_gpio_setup();
|
|
|
|
if (n526_init_platform_devices())
|
|
panic("Failed to initalize platform devices\n");
|
|
|
|
return 0;
|
|
}
|
|
|
|
arch_initcall(n526_board_setup);
|