![Axel Lin](/assets/img/avatar_default.png)
Signed-off-by: Axel Lin <axel.lin@gmail.com> Cc: Eric Miao <eric.y.miao@gmail.com> Tested-by: Paul Parsons <lost.distance@yahoo.com> Acked-by: Philipp Zabel <philipp.zabel@gmail.com> Acked-by: Robert Jarzmik <robert.jarzmik@free.fr> Acked-by: Marek Vasut <marek.vasut@gmail.com> Acked-by: Jonathan Cameron <jic23@cam.ac.uk> Signed-off-by: Haojian Zhuang <haojian.zhuang@gmail.com>
729 lines
16 KiB
C
729 lines
16 KiB
C
/*
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* linux/arch/arm/mach-pxa/z2.c
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*
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* Support for the Zipit Z2 Handheld device.
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*
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* Copyright (C) 2009-2010 Marek Vasut <marek.vasut@gmail.com>
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*
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* Based on research and code by: Ken McGuire
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* Based on mainstone.c as modified for the Zipit Z2.
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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/platform_device.h>
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#include <linux/mtd/mtd.h>
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#include <linux/mtd/partitions.h>
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#include <linux/pwm_backlight.h>
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#include <linux/z2_battery.h>
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#include <linux/dma-mapping.h>
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#include <linux/spi/spi.h>
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#include <linux/spi/pxa2xx_spi.h>
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#include <linux/spi/libertas_spi.h>
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#include <linux/spi/lms283gf05.h>
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#include <linux/power_supply.h>
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#include <linux/mtd/physmap.h>
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#include <linux/gpio.h>
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#include <linux/gpio_keys.h>
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#include <linux/delay.h>
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#include <linux/regulator/machine.h>
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#include <linux/i2c/pxa-i2c.h>
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#include <asm/mach-types.h>
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#include <asm/mach/arch.h>
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#include <mach/pxa27x.h>
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#include <mach/mfp-pxa27x.h>
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#include <mach/z2.h>
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#include <mach/pxafb.h>
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#include <mach/mmc.h>
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#include <plat/pxa27x_keypad.h>
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#include <mach/pm.h>
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#include "generic.h"
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#include "devices.h"
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/******************************************************************************
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* Pin configuration
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******************************************************************************/
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static unsigned long z2_pin_config[] = {
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/* LCD - 16bpp Active TFT */
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GPIO58_LCD_LDD_0,
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GPIO59_LCD_LDD_1,
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GPIO60_LCD_LDD_2,
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GPIO61_LCD_LDD_3,
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GPIO62_LCD_LDD_4,
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GPIO63_LCD_LDD_5,
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GPIO64_LCD_LDD_6,
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GPIO65_LCD_LDD_7,
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GPIO66_LCD_LDD_8,
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GPIO67_LCD_LDD_9,
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GPIO68_LCD_LDD_10,
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GPIO69_LCD_LDD_11,
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GPIO70_LCD_LDD_12,
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GPIO71_LCD_LDD_13,
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GPIO72_LCD_LDD_14,
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GPIO73_LCD_LDD_15,
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GPIO74_LCD_FCLK,
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GPIO75_LCD_LCLK,
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GPIO76_LCD_PCLK,
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GPIO77_LCD_BIAS,
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GPIO19_GPIO, /* LCD reset */
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GPIO88_GPIO, /* LCD chipselect */
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/* PWM */
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GPIO115_PWM1_OUT, /* Keypad Backlight */
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GPIO11_PWM2_OUT, /* LCD Backlight */
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/* MMC */
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GPIO32_MMC_CLK,
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GPIO112_MMC_CMD,
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GPIO92_MMC_DAT_0,
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GPIO109_MMC_DAT_1,
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GPIO110_MMC_DAT_2,
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GPIO111_MMC_DAT_3,
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GPIO96_GPIO, /* SD detect */
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/* STUART */
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GPIO46_STUART_RXD,
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GPIO47_STUART_TXD,
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/* Keypad */
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GPIO100_KP_MKIN_0,
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GPIO101_KP_MKIN_1,
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GPIO102_KP_MKIN_2,
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GPIO34_KP_MKIN_3,
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GPIO38_KP_MKIN_4,
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GPIO16_KP_MKIN_5,
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GPIO17_KP_MKIN_6,
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GPIO103_KP_MKOUT_0,
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GPIO104_KP_MKOUT_1,
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GPIO105_KP_MKOUT_2,
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GPIO106_KP_MKOUT_3,
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GPIO107_KP_MKOUT_4,
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GPIO108_KP_MKOUT_5,
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GPIO35_KP_MKOUT_6,
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GPIO41_KP_MKOUT_7,
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/* I2C */
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GPIO117_I2C_SCL,
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GPIO118_I2C_SDA,
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/* SSP1 */
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GPIO23_SSP1_SCLK, /* SSP1_SCK */
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GPIO25_SSP1_TXD, /* SSP1_TXD */
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GPIO26_SSP1_RXD, /* SSP1_RXD */
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/* SSP2 */
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GPIO22_SSP2_SCLK, /* SSP2_SCK */
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GPIO13_SSP2_TXD, /* SSP2_TXD */
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GPIO40_SSP2_RXD, /* SSP2_RXD */
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/* LEDs */
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GPIO10_GPIO, /* WiFi LED */
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GPIO83_GPIO, /* Charging LED */
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GPIO85_GPIO, /* Charged LED */
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/* I2S */
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GPIO28_I2S_BITCLK_OUT,
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GPIO29_I2S_SDATA_IN,
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GPIO30_I2S_SDATA_OUT,
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GPIO31_I2S_SYNC,
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GPIO113_I2S_SYSCLK,
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/* MISC */
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GPIO0_GPIO, /* AC power detect */
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GPIO1_GPIO, /* Power button */
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GPIO37_GPIO, /* Headphone detect */
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GPIO98_GPIO, /* Lid switch */
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GPIO14_GPIO, /* WiFi Power */
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GPIO24_GPIO, /* WiFi CS */
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GPIO36_GPIO, /* WiFi IRQ */
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GPIO88_GPIO, /* LCD CS */
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};
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/******************************************************************************
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* NOR Flash
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******************************************************************************/
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#if defined(CONFIG_MTD_PHYSMAP) || defined(CONFIG_MTD_PHYSMAP_MODULE)
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static struct resource z2_flash_resource = {
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.start = PXA_CS0_PHYS,
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.end = PXA_CS0_PHYS + SZ_8M - 1,
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.flags = IORESOURCE_MEM,
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};
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static struct mtd_partition z2_flash_parts[] = {
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{
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.name = "U-Boot Bootloader",
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.offset = 0x0,
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.size = 0x40000,
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}, {
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.name = "U-Boot Environment",
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.offset = 0x40000,
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.size = 0x20000,
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}, {
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.name = "Flash",
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.offset = 0x60000,
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.size = MTDPART_SIZ_FULL,
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},
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};
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static struct physmap_flash_data z2_flash_data = {
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.width = 2,
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.parts = z2_flash_parts,
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.nr_parts = ARRAY_SIZE(z2_flash_parts),
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};
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static struct platform_device z2_flash = {
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.name = "physmap-flash",
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.id = -1,
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.resource = &z2_flash_resource,
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.num_resources = 1,
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.dev = {
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.platform_data = &z2_flash_data,
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},
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};
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static void __init z2_nor_init(void)
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{
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platform_device_register(&z2_flash);
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}
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#else
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static inline void z2_nor_init(void) {}
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#endif
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/******************************************************************************
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* Backlight
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******************************************************************************/
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#if defined(CONFIG_BACKLIGHT_PWM) || defined(CONFIG_BACKLIGHT_PWM_MODULE)
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static struct platform_pwm_backlight_data z2_backlight_data[] = {
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[0] = {
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/* Keypad Backlight */
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.pwm_id = 1,
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.max_brightness = 1023,
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.dft_brightness = 0,
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.pwm_period_ns = 1260320,
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},
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[1] = {
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/* LCD Backlight */
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.pwm_id = 2,
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.max_brightness = 1023,
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.dft_brightness = 512,
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.pwm_period_ns = 1260320,
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},
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};
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static struct platform_device z2_backlight_devices[2] = {
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{
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.name = "pwm-backlight",
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.id = 0,
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.dev = {
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.platform_data = &z2_backlight_data[1],
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},
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},
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{
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.name = "pwm-backlight",
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.id = 1,
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.dev = {
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.platform_data = &z2_backlight_data[0],
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},
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},
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};
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static void __init z2_pwm_init(void)
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{
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platform_device_register(&z2_backlight_devices[0]);
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platform_device_register(&z2_backlight_devices[1]);
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}
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#else
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static inline void z2_pwm_init(void) {}
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#endif
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/******************************************************************************
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* Framebuffer
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******************************************************************************/
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#if defined(CONFIG_FB_PXA) || defined(CONFIG_FB_PXA_MODULE)
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static struct pxafb_mode_info z2_lcd_modes[] = {
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{
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.pixclock = 192000,
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.xres = 240,
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.yres = 320,
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.bpp = 16,
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.left_margin = 4,
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.right_margin = 8,
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.upper_margin = 4,
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.lower_margin = 8,
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.hsync_len = 4,
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.vsync_len = 4,
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},
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};
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static struct pxafb_mach_info z2_lcd_screen = {
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.modes = z2_lcd_modes,
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.num_modes = ARRAY_SIZE(z2_lcd_modes),
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.lcd_conn = LCD_COLOR_TFT_16BPP | LCD_BIAS_ACTIVE_LOW |
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LCD_ALTERNATE_MAPPING,
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};
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static void __init z2_lcd_init(void)
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{
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pxa_set_fb_info(NULL, &z2_lcd_screen);
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}
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#else
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static inline void z2_lcd_init(void) {}
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#endif
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/******************************************************************************
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* SD/MMC card controller
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******************************************************************************/
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#if defined(CONFIG_MMC_PXA) || defined(CONFIG_MMC_PXA_MODULE)
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static struct pxamci_platform_data z2_mci_platform_data = {
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.ocr_mask = MMC_VDD_32_33 | MMC_VDD_33_34,
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.gpio_card_detect = GPIO96_ZIPITZ2_SD_DETECT,
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.gpio_power = -1,
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.gpio_card_ro = -1,
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.detect_delay_ms = 200,
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};
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static void __init z2_mmc_init(void)
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{
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pxa_set_mci_info(&z2_mci_platform_data);
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}
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#else
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static inline void z2_mmc_init(void) {}
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#endif
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/******************************************************************************
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* LEDs
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******************************************************************************/
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#if defined(CONFIG_LEDS_GPIO) || defined(CONFIG_LEDS_GPIO_MODULE)
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struct gpio_led z2_gpio_leds[] = {
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{
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.name = "z2:green:wifi",
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.default_trigger = "none",
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.gpio = GPIO10_ZIPITZ2_LED_WIFI,
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.active_low = 1,
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}, {
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.name = "z2:green:charged",
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.default_trigger = "mmc0",
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.gpio = GPIO85_ZIPITZ2_LED_CHARGED,
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.active_low = 1,
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}, {
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.name = "z2:amber:charging",
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.default_trigger = "Z2-charging-or-full",
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.gpio = GPIO83_ZIPITZ2_LED_CHARGING,
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.active_low = 1,
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},
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};
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static struct gpio_led_platform_data z2_gpio_led_info = {
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.leds = z2_gpio_leds,
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.num_leds = ARRAY_SIZE(z2_gpio_leds),
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};
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static struct platform_device z2_leds = {
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.name = "leds-gpio",
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.id = -1,
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.dev = {
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.platform_data = &z2_gpio_led_info,
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}
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};
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static void __init z2_leds_init(void)
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{
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platform_device_register(&z2_leds);
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}
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#else
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static inline void z2_leds_init(void) {}
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#endif
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/******************************************************************************
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* GPIO keyboard
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******************************************************************************/
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#if defined(CONFIG_KEYBOARD_PXA27x) || defined(CONFIG_KEYBOARD_PXA27x_MODULE)
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static unsigned int z2_matrix_keys[] = {
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KEY(0, 0, KEY_OPTION),
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KEY(1, 0, KEY_UP),
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KEY(2, 0, KEY_DOWN),
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KEY(3, 0, KEY_LEFT),
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KEY(4, 0, KEY_RIGHT),
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KEY(5, 0, KEY_END),
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KEY(6, 0, KEY_KPPLUS),
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KEY(0, 1, KEY_HOME),
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KEY(1, 1, KEY_Q),
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KEY(2, 1, KEY_I),
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KEY(3, 1, KEY_G),
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KEY(4, 1, KEY_X),
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KEY(5, 1, KEY_ENTER),
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KEY(6, 1, KEY_KPMINUS),
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KEY(0, 2, KEY_PAGEUP),
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KEY(1, 2, KEY_W),
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KEY(2, 2, KEY_O),
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KEY(3, 2, KEY_H),
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KEY(4, 2, KEY_C),
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KEY(5, 2, KEY_LEFTALT),
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KEY(0, 3, KEY_PAGEDOWN),
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KEY(1, 3, KEY_E),
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KEY(2, 3, KEY_P),
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KEY(3, 3, KEY_J),
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KEY(4, 3, KEY_V),
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KEY(5, 3, KEY_LEFTSHIFT),
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KEY(0, 4, KEY_ESC),
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KEY(1, 4, KEY_R),
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KEY(2, 4, KEY_A),
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KEY(3, 4, KEY_K),
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KEY(4, 4, KEY_B),
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KEY(5, 4, KEY_LEFTCTRL),
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KEY(0, 5, KEY_TAB),
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KEY(1, 5, KEY_T),
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KEY(2, 5, KEY_S),
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KEY(3, 5, KEY_L),
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KEY(4, 5, KEY_N),
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KEY(5, 5, KEY_SPACE),
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KEY(0, 6, KEY_STOPCD),
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KEY(1, 6, KEY_Y),
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KEY(2, 6, KEY_D),
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KEY(3, 6, KEY_BACKSPACE),
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KEY(4, 6, KEY_M),
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KEY(5, 6, KEY_COMMA),
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KEY(0, 7, KEY_PLAYCD),
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KEY(1, 7, KEY_U),
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KEY(2, 7, KEY_F),
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KEY(3, 7, KEY_Z),
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KEY(4, 7, KEY_SEMICOLON),
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KEY(5, 7, KEY_DOT),
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};
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static struct pxa27x_keypad_platform_data z2_keypad_platform_data = {
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.matrix_key_rows = 7,
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.matrix_key_cols = 8,
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.matrix_key_map = z2_matrix_keys,
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.matrix_key_map_size = ARRAY_SIZE(z2_matrix_keys),
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.debounce_interval = 30,
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};
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static void __init z2_mkp_init(void)
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{
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pxa_set_keypad_info(&z2_keypad_platform_data);
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}
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#else
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static inline void z2_mkp_init(void) {}
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#endif
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/******************************************************************************
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* GPIO keys
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******************************************************************************/
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#if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
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static struct gpio_keys_button z2_pxa_buttons[] = {
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{
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.code = KEY_POWER,
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.gpio = GPIO1_ZIPITZ2_POWER_BUTTON,
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.active_low = 0,
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.desc = "Power Button",
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.wakeup = 1,
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.type = EV_KEY,
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},
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{
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.code = SW_LID,
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.gpio = GPIO98_ZIPITZ2_LID_BUTTON,
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.active_low = 1,
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.desc = "Lid Switch",
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.wakeup = 0,
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.type = EV_SW,
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},
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};
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static struct gpio_keys_platform_data z2_pxa_keys_data = {
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.buttons = z2_pxa_buttons,
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.nbuttons = ARRAY_SIZE(z2_pxa_buttons),
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};
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static struct platform_device z2_pxa_keys = {
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.name = "gpio-keys",
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.id = -1,
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.dev = {
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.platform_data = &z2_pxa_keys_data,
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},
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};
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static void __init z2_keys_init(void)
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{
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platform_device_register(&z2_pxa_keys);
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}
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#else
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static inline void z2_keys_init(void) {}
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#endif
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/******************************************************************************
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* Battery
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******************************************************************************/
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#if defined(CONFIG_I2C_PXA) || defined(CONFIG_I2C_PXA_MODULE)
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static struct z2_battery_info batt_chip_info = {
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.batt_I2C_bus = 0,
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.batt_I2C_addr = 0x55,
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.batt_I2C_reg = 2,
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.charge_gpio = GPIO0_ZIPITZ2_AC_DETECT,
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.min_voltage = 3475000,
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.max_voltage = 4190000,
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.batt_div = 59,
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.batt_mult = 1000000,
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.batt_tech = POWER_SUPPLY_TECHNOLOGY_LION,
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.batt_name = "Z2",
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};
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static struct i2c_board_info __initdata z2_i2c_board_info[] = {
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{
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I2C_BOARD_INFO("aer915", 0x55),
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.platform_data = &batt_chip_info,
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}, {
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I2C_BOARD_INFO("wm8750", 0x1b),
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},
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};
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static void __init z2_i2c_init(void)
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{
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pxa_set_i2c_info(NULL);
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i2c_register_board_info(0, ARRAY_AND_SIZE(z2_i2c_board_info));
|
|
}
|
|
#else
|
|
static inline void z2_i2c_init(void) {}
|
|
#endif
|
|
|
|
/******************************************************************************
|
|
* SSP Devices - WiFi and LCD control
|
|
******************************************************************************/
|
|
#if defined(CONFIG_SPI_PXA2XX) || defined(CONFIG_SPI_PXA2XX_MODULE)
|
|
/* WiFi */
|
|
static int z2_lbs_spi_setup(struct spi_device *spi)
|
|
{
|
|
int ret = 0;
|
|
|
|
ret = gpio_request(GPIO14_ZIPITZ2_WIFI_POWER, "WiFi Power");
|
|
if (ret)
|
|
goto err;
|
|
|
|
ret = gpio_direction_output(GPIO14_ZIPITZ2_WIFI_POWER, 1);
|
|
if (ret)
|
|
goto err2;
|
|
|
|
/* Wait until card is powered on */
|
|
mdelay(180);
|
|
|
|
spi->bits_per_word = 16;
|
|
spi->mode = SPI_MODE_2,
|
|
|
|
spi_setup(spi);
|
|
|
|
return 0;
|
|
|
|
err2:
|
|
gpio_free(GPIO14_ZIPITZ2_WIFI_POWER);
|
|
err:
|
|
return ret;
|
|
};
|
|
|
|
static int z2_lbs_spi_teardown(struct spi_device *spi)
|
|
{
|
|
gpio_set_value(GPIO14_ZIPITZ2_WIFI_POWER, 0);
|
|
gpio_free(GPIO14_ZIPITZ2_WIFI_POWER);
|
|
|
|
return 0;
|
|
};
|
|
|
|
static struct pxa2xx_spi_chip z2_lbs_chip_info = {
|
|
.rx_threshold = 8,
|
|
.tx_threshold = 8,
|
|
.timeout = 1000,
|
|
.gpio_cs = GPIO24_ZIPITZ2_WIFI_CS,
|
|
};
|
|
|
|
static struct libertas_spi_platform_data z2_lbs_pdata = {
|
|
.use_dummy_writes = 1,
|
|
.setup = z2_lbs_spi_setup,
|
|
.teardown = z2_lbs_spi_teardown,
|
|
};
|
|
|
|
/* LCD */
|
|
static struct pxa2xx_spi_chip lms283_chip_info = {
|
|
.rx_threshold = 1,
|
|
.tx_threshold = 1,
|
|
.timeout = 64,
|
|
.gpio_cs = GPIO88_ZIPITZ2_LCD_CS,
|
|
};
|
|
|
|
static const struct lms283gf05_pdata lms283_pdata = {
|
|
.reset_gpio = GPIO19_ZIPITZ2_LCD_RESET,
|
|
};
|
|
|
|
static struct spi_board_info spi_board_info[] __initdata = {
|
|
{
|
|
.modalias = "libertas_spi",
|
|
.platform_data = &z2_lbs_pdata,
|
|
.controller_data = &z2_lbs_chip_info,
|
|
.irq = PXA_GPIO_TO_IRQ(GPIO36_ZIPITZ2_WIFI_IRQ),
|
|
.max_speed_hz = 13000000,
|
|
.bus_num = 1,
|
|
.chip_select = 0,
|
|
},
|
|
{
|
|
.modalias = "lms283gf05",
|
|
.controller_data = &lms283_chip_info,
|
|
.platform_data = &lms283_pdata,
|
|
.max_speed_hz = 400000,
|
|
.bus_num = 2,
|
|
.chip_select = 0,
|
|
},
|
|
};
|
|
|
|
static struct pxa2xx_spi_master pxa_ssp1_master_info = {
|
|
.clock_enable = CKEN_SSP,
|
|
.num_chipselect = 1,
|
|
.enable_dma = 1,
|
|
};
|
|
|
|
static struct pxa2xx_spi_master pxa_ssp2_master_info = {
|
|
.clock_enable = CKEN_SSP2,
|
|
.num_chipselect = 1,
|
|
};
|
|
|
|
static void __init z2_spi_init(void)
|
|
{
|
|
pxa2xx_set_spi_info(1, &pxa_ssp1_master_info);
|
|
pxa2xx_set_spi_info(2, &pxa_ssp2_master_info);
|
|
spi_register_board_info(spi_board_info, ARRAY_SIZE(spi_board_info));
|
|
}
|
|
#else
|
|
static inline void z2_spi_init(void) {}
|
|
#endif
|
|
|
|
/******************************************************************************
|
|
* Core power regulator
|
|
******************************************************************************/
|
|
#if defined(CONFIG_REGULATOR_TPS65023) || \
|
|
defined(CONFIG_REGULATOR_TPS65023_MODULE)
|
|
static struct regulator_consumer_supply z2_tps65021_consumers[] = {
|
|
REGULATOR_SUPPLY("vcc_core", NULL),
|
|
};
|
|
|
|
static struct regulator_init_data z2_tps65021_info[] = {
|
|
{
|
|
.constraints = {
|
|
.name = "vcc_core range",
|
|
.min_uV = 800000,
|
|
.max_uV = 1600000,
|
|
.always_on = 1,
|
|
.valid_ops_mask = REGULATOR_CHANGE_VOLTAGE,
|
|
},
|
|
.consumer_supplies = z2_tps65021_consumers,
|
|
.num_consumer_supplies = ARRAY_SIZE(z2_tps65021_consumers),
|
|
}, {
|
|
.constraints = {
|
|
.name = "DCDC2",
|
|
.min_uV = 3300000,
|
|
.max_uV = 3300000,
|
|
.always_on = 1,
|
|
},
|
|
}, {
|
|
.constraints = {
|
|
.name = "DCDC3",
|
|
.min_uV = 1800000,
|
|
.max_uV = 1800000,
|
|
.always_on = 1,
|
|
},
|
|
}, {
|
|
.constraints = {
|
|
.name = "LDO1",
|
|
.min_uV = 1000000,
|
|
.max_uV = 3150000,
|
|
.always_on = 1,
|
|
},
|
|
}, {
|
|
.constraints = {
|
|
.name = "LDO2",
|
|
.min_uV = 1050000,
|
|
.max_uV = 3300000,
|
|
.always_on = 1,
|
|
},
|
|
}
|
|
};
|
|
|
|
static struct i2c_board_info __initdata z2_pi2c_board_info[] = {
|
|
{
|
|
I2C_BOARD_INFO("tps65021", 0x48),
|
|
.platform_data = &z2_tps65021_info,
|
|
},
|
|
};
|
|
|
|
static void __init z2_pmic_init(void)
|
|
{
|
|
pxa27x_set_i2c_power_info(NULL);
|
|
i2c_register_board_info(1, ARRAY_AND_SIZE(z2_pi2c_board_info));
|
|
}
|
|
#else
|
|
static inline void z2_pmic_init(void) {}
|
|
#endif
|
|
|
|
#ifdef CONFIG_PM
|
|
static void z2_power_off(void)
|
|
{
|
|
/* We're using deep sleep as poweroff, so clear PSPR to ensure that
|
|
* bootloader will jump to its entry point in resume handler
|
|
*/
|
|
PSPR = 0x0;
|
|
local_irq_disable();
|
|
pxa27x_set_pwrmode(PWRMODE_DEEPSLEEP);
|
|
pxa27x_cpu_pm_enter(PM_SUSPEND_MEM);
|
|
}
|
|
#else
|
|
#define z2_power_off NULL
|
|
#endif
|
|
|
|
/******************************************************************************
|
|
* Machine init
|
|
******************************************************************************/
|
|
static void __init z2_init(void)
|
|
{
|
|
pxa2xx_mfp_config(ARRAY_AND_SIZE(z2_pin_config));
|
|
|
|
pxa_set_ffuart_info(NULL);
|
|
pxa_set_btuart_info(NULL);
|
|
pxa_set_stuart_info(NULL);
|
|
|
|
z2_lcd_init();
|
|
z2_mmc_init();
|
|
z2_mkp_init();
|
|
z2_i2c_init();
|
|
z2_spi_init();
|
|
z2_nor_init();
|
|
z2_pwm_init();
|
|
z2_leds_init();
|
|
z2_keys_init();
|
|
z2_pmic_init();
|
|
|
|
pm_power_off = z2_power_off;
|
|
}
|
|
|
|
MACHINE_START(ZIPIT2, "Zipit Z2")
|
|
.atag_offset = 0x100,
|
|
.map_io = pxa27x_map_io,
|
|
.nr_irqs = PXA_NR_IRQS,
|
|
.init_irq = pxa27x_init_irq,
|
|
.handle_irq = pxa27x_handle_irq,
|
|
.timer = &pxa_timer,
|
|
.init_machine = z2_init,
|
|
.restart = pxa_restart,
|
|
MACHINE_END
|