271 lines
6.4 KiB
C
271 lines
6.4 KiB
C
/*
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* linux/arch/arm/mach-omap1/board-nokia770.c
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*
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* Modified from board-generic.c
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/platform_device.h>
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#include <linux/input.h>
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#include <linux/clk.h>
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#include <linux/spi/spi.h>
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#include <linux/spi/ads7846.h>
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#include <asm/hardware.h>
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#include <asm/mach-types.h>
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#include <asm/mach/arch.h>
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#include <asm/mach/map.h>
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#include <asm/arch/gpio.h>
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#include <asm/arch/mux.h>
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#include <asm/arch/usb.h>
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#include <asm/arch/board.h>
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#include <asm/arch/keypad.h>
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#include <asm/arch/common.h>
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#include <asm/arch/dsp_common.h>
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#include <asm/arch/aic23.h>
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#include <asm/arch/gpio.h>
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static void __init omap_nokia770_init_irq(void)
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{
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/* On Nokia 770, the SleepX signal is masked with an
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* MPUIO line by default. It has to be unmasked for it
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* to become functional */
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/* SleepX mask direction */
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omap_writew((omap_readw(0xfffb5008) & ~2), 0xfffb5008);
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/* Unmask SleepX signal */
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omap_writew((omap_readw(0xfffb5004) & ~2), 0xfffb5004);
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omap1_init_common_hw();
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omap_init_irq();
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}
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static int nokia770_keymap[] = {
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KEY(0, 1, GROUP_0 | KEY_UP),
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KEY(0, 2, GROUP_1 | KEY_F5),
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KEY(1, 0, GROUP_0 | KEY_LEFT),
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KEY(1, 1, GROUP_0 | KEY_ENTER),
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KEY(1, 2, GROUP_0 | KEY_RIGHT),
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KEY(2, 0, GROUP_1 | KEY_ESC),
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KEY(2, 1, GROUP_0 | KEY_DOWN),
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KEY(2, 2, GROUP_1 | KEY_F4),
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KEY(3, 0, GROUP_2 | KEY_F7),
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KEY(3, 1, GROUP_2 | KEY_F8),
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KEY(3, 2, GROUP_2 | KEY_F6),
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0
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};
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static struct resource nokia770_kp_resources[] = {
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[0] = {
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.start = INT_KEYBOARD,
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.end = INT_KEYBOARD,
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.flags = IORESOURCE_IRQ,
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},
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};
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static struct omap_kp_platform_data nokia770_kp_data = {
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.rows = 8,
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.cols = 8,
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.keymap = nokia770_keymap,
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.keymapsize = ARRAY_SIZE(nokia770_keymap),
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.delay = 4,
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};
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static struct platform_device nokia770_kp_device = {
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.name = "omap-keypad",
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.id = -1,
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.dev = {
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.platform_data = &nokia770_kp_data,
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},
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.num_resources = ARRAY_SIZE(nokia770_kp_resources),
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.resource = nokia770_kp_resources,
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};
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static struct platform_device *nokia770_devices[] __initdata = {
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&nokia770_kp_device,
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};
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static struct ads7846_platform_data nokia770_ads7846_platform_data __initdata = {
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.x_max = 0x0fff,
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.y_max = 0x0fff,
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.x_plate_ohms = 180,
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.pressure_max = 255,
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.debounce_max = 10,
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.debounce_tol = 3,
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};
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static struct spi_board_info nokia770_spi_board_info[] __initdata = {
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[0] = {
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.modalias = "lcd_lph8923",
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.bus_num = 2,
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.chip_select = 3,
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.max_speed_hz = 12000000,
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},
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[1] = {
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.modalias = "ads7846",
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.bus_num = 2,
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.chip_select = 0,
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.max_speed_hz = 2500000,
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.irq = OMAP_GPIO_IRQ(15),
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.platform_data = &nokia770_ads7846_platform_data,
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},
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};
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/* assume no Mini-AB port */
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static struct omap_usb_config nokia770_usb_config __initdata = {
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.otg = 1,
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.register_host = 1,
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.register_dev = 1,
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.hmc_mode = 16,
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.pins[0] = 6,
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};
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static struct omap_mmc_config nokia770_mmc_config __initdata = {
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.mmc[0] = {
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.enabled = 0,
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.wire4 = 0,
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.wp_pin = -1,
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.power_pin = -1,
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.switch_pin = -1,
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},
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.mmc[1] = {
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.enabled = 0,
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.wire4 = 0,
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.wp_pin = -1,
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.power_pin = -1,
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.switch_pin = -1,
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},
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};
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static struct omap_board_config_kernel nokia770_config[] = {
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{ OMAP_TAG_USB, NULL },
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{ OMAP_TAG_MMC, &nokia770_mmc_config },
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};
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/*
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* audio power control
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*/
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#define HEADPHONE_GPIO 14
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#define AMPLIFIER_CTRL_GPIO 58
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static struct clk *dspxor_ck;
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static DECLARE_MUTEX(audio_pwr_sem);
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/*
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* audio_pwr_state
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* +--+-------------------------+---------------------------------------+
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* |-1|down |power-up request -> 0 |
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* +--+-------------------------+---------------------------------------+
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* | 0|up |power-down(1) request -> 1 |
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* | | |power-down(2) request -> (ignore) |
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* +--+-------------------------+---------------------------------------+
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* | 1|up, |power-up request -> 0 |
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* | |received down(1) request |power-down(2) request -> -1 |
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* +--+-------------------------+---------------------------------------+
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*/
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static int audio_pwr_state = -1;
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/*
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* audio_pwr_up / down should be called under audio_pwr_sem
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*/
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static void nokia770_audio_pwr_up(void)
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{
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clk_enable(dspxor_ck);
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/* Turn on codec */
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tlv320aic23_power_up();
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if (omap_get_gpio_datain(HEADPHONE_GPIO))
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/* HP not connected, turn on amplifier */
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omap_set_gpio_dataout(AMPLIFIER_CTRL_GPIO, 1);
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else
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/* HP connected, do not turn on amplifier */
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printk("HP connected\n");
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}
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static void codec_delayed_power_down(struct work_struct *work)
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{
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down(&audio_pwr_sem);
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if (audio_pwr_state == -1)
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tlv320aic23_power_down();
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clk_disable(dspxor_ck);
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up(&audio_pwr_sem);
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}
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static DECLARE_DELAYED_WORK(codec_power_down_work, codec_delayed_power_down);
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static void nokia770_audio_pwr_down(void)
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{
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/* Turn off amplifier */
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omap_set_gpio_dataout(AMPLIFIER_CTRL_GPIO, 0);
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/* Turn off codec: schedule delayed work */
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schedule_delayed_work(&codec_power_down_work, HZ / 20); /* 50ms */
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}
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void nokia770_audio_pwr_up_request(int stage)
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{
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down(&audio_pwr_sem);
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if (audio_pwr_state == -1)
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nokia770_audio_pwr_up();
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/* force audio_pwr_state = 0, even if it was 1. */
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audio_pwr_state = 0;
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up(&audio_pwr_sem);
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}
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void nokia770_audio_pwr_down_request(int stage)
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{
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down(&audio_pwr_sem);
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switch (stage) {
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case 1:
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if (audio_pwr_state == 0)
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audio_pwr_state = 1;
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break;
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case 2:
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if (audio_pwr_state == 1) {
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nokia770_audio_pwr_down();
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audio_pwr_state = -1;
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}
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break;
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}
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up(&audio_pwr_sem);
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}
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static void __init omap_nokia770_init(void)
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{
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nokia770_config[0].data = &nokia770_usb_config;
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platform_add_devices(nokia770_devices, ARRAY_SIZE(nokia770_devices));
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spi_register_board_info(nokia770_spi_board_info,
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ARRAY_SIZE(nokia770_spi_board_info));
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omap_board_config = nokia770_config;
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omap_board_config_size = ARRAY_SIZE(nokia770_config);
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omap_serial_init();
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omap_dsp_audio_pwr_up_request = nokia770_audio_pwr_up_request;
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omap_dsp_audio_pwr_down_request = nokia770_audio_pwr_down_request;
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dspxor_ck = clk_get(0, "dspxor_ck");
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}
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static void __init omap_nokia770_map_io(void)
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{
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omap1_map_common_io();
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}
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MACHINE_START(NOKIA770, "Nokia 770")
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.phys_io = 0xfff00000,
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.io_pg_offst = ((0xfef00000) >> 18) & 0xfffc,
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.boot_params = 0x10000100,
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.map_io = omap_nokia770_map_io,
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.init_irq = omap_nokia770_init_irq,
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.init_machine = omap_nokia770_init,
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.timer = &omap_timer,
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MACHINE_END
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