WSL2-Linux-Kernel/arch/arm/mach-ux500/board-mop500.c

328 строки
7.5 KiB
C

/*
* Copyright (C) 2008-2009 ST-Ericsson
*
* Author: Srinidhi KASAGAR <srinidhi.kasagar@stericsson.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2, as
* published by the Free Software Foundation.
*
*/
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/platform_device.h>
#include <linux/io.h>
#include <linux/gpio.h>
#include <linux/amba/bus.h>
#include <linux/amba/pl022.h>
#include <linux/spi/spi.h>
#include <linux/mfd/ab8500.h>
#include <linux/input/matrix_keypad.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <plat/pincfg.h>
#include <plat/i2c.h>
#include <plat/ske.h>
#include <mach/hardware.h>
#include <mach/setup.h>
#include <mach/devices.h>
#include <mach/irqs.h>
#include "pins-db8500.h"
#include "board-mop500.h"
static pin_cfg_t mop500_pins[] = {
/* SSP0 */
GPIO143_SSP0_CLK,
GPIO144_SSP0_FRM,
GPIO145_SSP0_RXD,
GPIO146_SSP0_TXD,
/* I2C */
GPIO147_I2C0_SCL,
GPIO148_I2C0_SDA,
GPIO16_I2C1_SCL,
GPIO17_I2C1_SDA,
GPIO10_I2C2_SDA,
GPIO11_I2C2_SCL,
GPIO229_I2C3_SDA,
GPIO230_I2C3_SCL,
/* SKE keypad */
GPIO153_KP_I7,
GPIO154_KP_I6,
GPIO155_KP_I5,
GPIO156_KP_I4,
GPIO157_KP_O7,
GPIO158_KP_O6,
GPIO159_KP_O5,
GPIO160_KP_O4,
GPIO161_KP_I3,
GPIO162_KP_I2,
GPIO163_KP_I1,
GPIO164_KP_I0,
GPIO165_KP_O3,
GPIO166_KP_O2,
GPIO167_KP_O1,
GPIO168_KP_O0,
};
static void ab4500_spi_cs_control(u32 command)
{
/* set the FRM signal, which is CS - TODO */
}
struct pl022_config_chip ab4500_chip_info = {
.com_mode = INTERRUPT_TRANSFER,
.iface = SSP_INTERFACE_MOTOROLA_SPI,
/* we can act as master only */
.hierarchy = SSP_MASTER,
.slave_tx_disable = 0,
.rx_lev_trig = SSP_RX_1_OR_MORE_ELEM,
.tx_lev_trig = SSP_TX_1_OR_MORE_EMPTY_LOC,
.cs_control = ab4500_spi_cs_control,
};
static struct ab8500_platform_data ab8500_platdata = {
.irq_base = MOP500_AB8500_IRQ_BASE,
};
static struct resource ab8500_resources[] = {
[0] = {
.start = IRQ_AB8500,
.end = IRQ_AB8500,
.flags = IORESOURCE_IRQ
}
};
struct platform_device ab8500_device = {
.name = "ab8500-i2c",
.id = 0,
.dev = {
.platform_data = &ab8500_platdata,
},
.num_resources = 1,
.resource = ab8500_resources,
};
static struct spi_board_info ab8500_spi_devices[] = {
{
.modalias = "ab8500-spi",
.controller_data = &ab4500_chip_info,
.platform_data = &ab8500_platdata,
.max_speed_hz = 12000000,
.bus_num = 0,
.chip_select = 0,
.mode = SPI_MODE_3,
.irq = IRQ_DB8500_AB8500,
},
};
static struct pl022_ssp_controller ssp0_platform_data = {
.bus_id = 0,
/* pl022 not yet supports dma */
.enable_dma = 0,
/* on this platform, gpio 31,142,144,214 &
* 224 are connected as chip selects
*/
.num_chipselect = 5,
};
#define U8500_I2C_CONTROLLER(id, _slsu, _tft, _rft, clk, _sm) \
static struct nmk_i2c_controller u8500_i2c##id##_data = { \
/* \
* slave data setup time, which is \
* 250 ns,100ns,10ns which is 14,6,2 \
* respectively for a 48 Mhz \
* i2c clock \
*/ \
.slsu = _slsu, \
/* Tx FIFO threshold */ \
.tft = _tft, \
/* Rx FIFO threshold */ \
.rft = _rft, \
/* std. mode operation */ \
.clk_freq = clk, \
.sm = _sm, \
}
/*
* The board uses 4 i2c controllers, initialize all of
* them with slave data setup time of 250 ns,
* Tx & Rx FIFO threshold values as 1 and standard
* mode of operation
*/
U8500_I2C_CONTROLLER(0, 0xe, 1, 1, 100000, I2C_FREQ_MODE_STANDARD);
U8500_I2C_CONTROLLER(1, 0xe, 1, 1, 100000, I2C_FREQ_MODE_STANDARD);
U8500_I2C_CONTROLLER(2, 0xe, 1, 1, 100000, I2C_FREQ_MODE_STANDARD);
U8500_I2C_CONTROLLER(3, 0xe, 1, 1, 100000, I2C_FREQ_MODE_STANDARD);
static struct amba_device *amba_devs[] __initdata = {
&ux500_uart0_device,
&ux500_uart1_device,
&ux500_uart2_device,
&u8500_ssp0_device,
};
static const unsigned int ux500_keymap[] = {
KEY(2, 5, KEY_END),
KEY(4, 1, KEY_POWER),
KEY(3, 5, KEY_VOLUMEDOWN),
KEY(1, 3, KEY_3),
KEY(5, 2, KEY_RIGHT),
KEY(5, 0, KEY_9),
KEY(0, 5, KEY_MENU),
KEY(7, 6, KEY_ENTER),
KEY(4, 5, KEY_0),
KEY(6, 7, KEY_2),
KEY(3, 4, KEY_UP),
KEY(3, 3, KEY_DOWN),
KEY(6, 4, KEY_SEND),
KEY(6, 2, KEY_BACK),
KEY(4, 2, KEY_VOLUMEUP),
KEY(5, 5, KEY_1),
KEY(4, 3, KEY_LEFT),
KEY(3, 2, KEY_7),
};
static const struct matrix_keymap_data ux500_keymap_data = {
.keymap = ux500_keymap,
.keymap_size = ARRAY_SIZE(ux500_keymap),
};
/*
* Nomadik SKE keypad
*/
#define ROW_PIN_I0 164
#define ROW_PIN_I1 163
#define ROW_PIN_I2 162
#define ROW_PIN_I3 161
#define ROW_PIN_I4 156
#define ROW_PIN_I5 155
#define ROW_PIN_I6 154
#define ROW_PIN_I7 153
#define COL_PIN_O0 168
#define COL_PIN_O1 167
#define COL_PIN_O2 166
#define COL_PIN_O3 165
#define COL_PIN_O4 160
#define COL_PIN_O5 159
#define COL_PIN_O6 158
#define COL_PIN_O7 157
#define SKE_KPD_MAX_ROWS 8
#define SKE_KPD_MAX_COLS 8
static int ske_kp_rows[] = {
ROW_PIN_I0, ROW_PIN_I1, ROW_PIN_I2, ROW_PIN_I3,
ROW_PIN_I4, ROW_PIN_I5, ROW_PIN_I6, ROW_PIN_I7,
};
/*
* ske_set_gpio_row: request and set gpio rows
*/
static int ske_set_gpio_row(int gpio)
{
int ret;
ret = gpio_request(gpio, "ske-kp");
if (ret < 0) {
pr_err("ske_set_gpio_row: gpio request failed\n");
return ret;
}
ret = gpio_direction_output(gpio, 1);
if (ret < 0) {
pr_err("ske_set_gpio_row: gpio direction failed\n");
gpio_free(gpio);
}
return ret;
}
/*
* ske_kp_init - enable the gpio configuration
*/
static int ske_kp_init(void)
{
int ret, i;
for (i = 0; i < SKE_KPD_MAX_ROWS; i++) {
ret = ske_set_gpio_row(ske_kp_rows[i]);
if (ret < 0) {
pr_err("ske_kp_init: failed init\n");
return ret;
}
}
return 0;
}
static struct ske_keypad_platform_data ske_keypad_board = {
.init = ske_kp_init,
.keymap_data = &ux500_keymap_data,
.no_autorepeat = true,
.krow = SKE_KPD_MAX_ROWS, /* 8x8 matrix */
.kcol = SKE_KPD_MAX_COLS,
.debounce_ms = 40, /* in millsecs */
};
/* add any platform devices here - TODO */
static struct platform_device *platform_devs[] __initdata = {
&u8500_i2c0_device,
&ux500_i2c1_device,
&ux500_i2c2_device,
&ux500_i2c3_device,
&ux500_ske_keypad_device,
};
static void __init u8500_init_machine(void)
{
int i;
u8500_init_devices();
nmk_config_pins(mop500_pins, ARRAY_SIZE(mop500_pins));
u8500_i2c0_device.dev.platform_data = &u8500_i2c0_data;
ux500_i2c1_device.dev.platform_data = &u8500_i2c1_data;
ux500_i2c2_device.dev.platform_data = &u8500_i2c2_data;
ux500_i2c3_device.dev.platform_data = &u8500_i2c3_data;
ux500_ske_keypad_device.dev.platform_data = &ske_keypad_board;
u8500_ssp0_device.dev.platform_data = &ssp0_platform_data;
/* Register the active AMBA devices on this board */
for (i = 0; i < ARRAY_SIZE(amba_devs); i++)
amba_device_register(amba_devs[i], &iomem_resource);
platform_add_devices(platform_devs, ARRAY_SIZE(platform_devs));
mop500_sdi_init();
/* If HW is early drop (ED) or V1.0 then use SPI to access AB8500 */
if (cpu_is_u8500ed() || cpu_is_u8500v10())
spi_register_board_info(ab8500_spi_devices,
ARRAY_SIZE(ab8500_spi_devices));
else /* If HW is v.1.1 or later use I2C to access AB8500 */
platform_device_register(&ab8500_device);
}
MACHINE_START(U8500, "ST-Ericsson MOP500 platform")
/* Maintainer: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com> */
.boot_params = 0x100,
.map_io = u8500_map_io,
.init_irq = ux500_init_irq,
/* we re-use nomadik timer here */
.timer = &ux500_timer,
.init_machine = u8500_init_machine,
MACHINE_END