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ea05a57f6d
Use the newly added infrastructure to configure the SSP0 and I2C[0-3] pins on the MOP500 board. The u8500_init_devices() call needed to be moved up in order to register the GPIO device first. Acked-by: Linus Walleij <linus.walleij@stericsson.com> Acked-by: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com> Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
175 lines
4.4 KiB
C
175 lines
4.4 KiB
C
/*
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* Copyright (C) 2008-2009 ST-Ericsson
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*
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* Author: Srinidhi KASAGAR <srinidhi.kasagar@stericsson.com>
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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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*/
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/interrupt.h>
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#include <linux/platform_device.h>
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#include <linux/io.h>
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#include <linux/gpio.h>
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#include <linux/amba/bus.h>
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#include <linux/amba/pl022.h>
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#include <linux/spi/spi.h>
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#include <asm/mach-types.h>
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#include <asm/mach/arch.h>
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#include <plat/pincfg.h>
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#include <plat/i2c.h>
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#include <mach/hardware.h>
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#include <mach/setup.h>
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#include <mach/devices.h>
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#include "pins-db8500.h"
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static pin_cfg_t mop500_pins[] = {
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/* SSP0 */
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GPIO143_SSP0_CLK,
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GPIO144_SSP0_FRM,
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GPIO145_SSP0_RXD,
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GPIO146_SSP0_TXD,
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/* I2C */
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GPIO147_I2C0_SCL,
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GPIO148_I2C0_SDA,
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GPIO16_I2C1_SCL,
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GPIO17_I2C1_SDA,
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GPIO10_I2C2_SDA,
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GPIO11_I2C2_SCL,
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GPIO229_I2C3_SDA,
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GPIO230_I2C3_SCL,
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};
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static void ab4500_spi_cs_control(u32 command)
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{
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/* set the FRM signal, which is CS - TODO */
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}
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struct pl022_config_chip ab4500_chip_info = {
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.lbm = LOOPBACK_DISABLED,
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.com_mode = INTERRUPT_TRANSFER,
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.iface = SSP_INTERFACE_MOTOROLA_SPI,
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/* we can act as master only */
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.hierarchy = SSP_MASTER,
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.slave_tx_disable = 0,
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.endian_rx = SSP_RX_MSB,
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.endian_tx = SSP_TX_MSB,
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.data_size = SSP_DATA_BITS_24,
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.rx_lev_trig = SSP_RX_1_OR_MORE_ELEM,
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.tx_lev_trig = SSP_TX_1_OR_MORE_EMPTY_LOC,
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.clk_phase = SSP_CLK_SECOND_EDGE,
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.clk_pol = SSP_CLK_POL_IDLE_HIGH,
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.cs_control = ab4500_spi_cs_control,
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};
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static struct spi_board_info u8500_spi_devices[] = {
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{
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.modalias = "ab8500",
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.controller_data = &ab4500_chip_info,
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.max_speed_hz = 12000000,
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.bus_num = 0,
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.chip_select = 0,
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.mode = SPI_MODE_0,
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.irq = IRQ_AB4500,
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},
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};
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static struct pl022_ssp_controller ssp0_platform_data = {
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.bus_id = 0,
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/* pl022 not yet supports dma */
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.enable_dma = 0,
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/* on this platform, gpio 31,142,144,214 &
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* 224 are connected as chip selects
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*/
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.num_chipselect = 5,
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};
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#define U8500_I2C_CONTROLLER(id, _slsu, _tft, _rft, clk, _sm) \
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static struct nmk_i2c_controller u8500_i2c##id##_data = { \
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/* \
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* slave data setup time, which is \
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* 250 ns,100ns,10ns which is 14,6,2 \
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* respectively for a 48 Mhz \
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* i2c clock \
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*/ \
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.slsu = _slsu, \
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/* Tx FIFO threshold */ \
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.tft = _tft, \
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/* Rx FIFO threshold */ \
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.rft = _rft, \
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/* std. mode operation */ \
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.clk_freq = clk, \
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.sm = _sm, \
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}
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/*
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* The board uses 4 i2c controllers, initialize all of
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* them with slave data setup time of 250 ns,
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* Tx & Rx FIFO threshold values as 1 and standard
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* mode of operation
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*/
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U8500_I2C_CONTROLLER(0, 0xe, 1, 1, 100000, I2C_FREQ_MODE_STANDARD);
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U8500_I2C_CONTROLLER(1, 0xe, 1, 1, 100000, I2C_FREQ_MODE_STANDARD);
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U8500_I2C_CONTROLLER(2, 0xe, 1, 1, 100000, I2C_FREQ_MODE_STANDARD);
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U8500_I2C_CONTROLLER(3, 0xe, 1, 1, 100000, I2C_FREQ_MODE_STANDARD);
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static struct amba_device *amba_devs[] __initdata = {
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&ux500_uart0_device,
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&ux500_uart1_device,
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&ux500_uart2_device,
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&u8500_ssp0_device,
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};
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/* add any platform devices here - TODO */
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static struct platform_device *platform_devs[] __initdata = {
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&u8500_i2c0_device,
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&ux500_i2c1_device,
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&ux500_i2c2_device,
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&ux500_i2c3_device,
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};
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static void __init u8500_init_machine(void)
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{
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int i;
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u8500_init_devices();
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nmk_config_pins(mop500_pins, ARRAY_SIZE(mop500_pins));
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u8500_i2c0_device.dev.platform_data = &u8500_i2c0_data;
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ux500_i2c1_device.dev.platform_data = &u8500_i2c1_data;
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ux500_i2c2_device.dev.platform_data = &u8500_i2c2_data;
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ux500_i2c3_device.dev.platform_data = &u8500_i2c3_data;
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u8500_ssp0_device.dev.platform_data = &ssp0_platform_data;
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/* Register the active AMBA devices on this board */
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for (i = 0; i < ARRAY_SIZE(amba_devs); i++)
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amba_device_register(amba_devs[i], &iomem_resource);
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platform_add_devices(platform_devs, ARRAY_SIZE(platform_devs));
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spi_register_board_info(u8500_spi_devices,
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ARRAY_SIZE(u8500_spi_devices));
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}
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MACHINE_START(U8500, "ST-Ericsson MOP500 platform")
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/* Maintainer: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com> */
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.phys_io = U8500_UART2_BASE,
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.io_pg_offst = (IO_ADDRESS(U8500_UART2_BASE) >> 18) & 0xfffc,
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.boot_params = 0x100,
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.map_io = u8500_map_io,
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.init_irq = ux500_init_irq,
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/* we re-use nomadik timer here */
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.timer = &ux500_timer,
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.init_machine = u8500_init_machine,
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MACHINE_END
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