114 lines
2.9 KiB
C
114 lines
2.9 KiB
C
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/*
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* arch/arm/mach-kirkwood/lacie_v2-common.c
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*
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* This file is licensed under the terms of the GNU General Public
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* License version 2. This program is licensed "as is" without any
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* warranty of any kind, whether express or implied.
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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/mtd/physmap.h>
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#include <linux/spi/flash.h>
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#include <linux/spi/spi.h>
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#include <linux/i2c.h>
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#include <linux/i2c/at24.h>
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#include <linux/gpio.h>
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#include <asm/mach/time.h>
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#include <mach/kirkwood.h>
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#include <mach/irqs.h>
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#include <plat/time.h>
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#include "common.h"
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/*****************************************************************************
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* 512KB SPI Flash on Boot Device (MACRONIX MX25L4005)
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****************************************************************************/
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static struct mtd_partition lacie_v2_flash_parts[] = {
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{
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.name = "u-boot",
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.size = MTDPART_SIZ_FULL,
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.offset = 0,
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.mask_flags = MTD_WRITEABLE, /* force read-only */
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},
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};
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static const struct flash_platform_data lacie_v2_flash = {
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.type = "mx25l4005a",
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.name = "spi_flash",
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.parts = lacie_v2_flash_parts,
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.nr_parts = ARRAY_SIZE(lacie_v2_flash_parts),
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};
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static struct spi_board_info __initdata lacie_v2_spi_slave_info[] = {
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{
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.modalias = "m25p80",
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.platform_data = &lacie_v2_flash,
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.irq = -1,
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.max_speed_hz = 20000000,
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.bus_num = 0,
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.chip_select = 0,
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},
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};
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void __init lacie_v2_register_flash(void)
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{
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spi_register_board_info(lacie_v2_spi_slave_info,
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ARRAY_SIZE(lacie_v2_spi_slave_info));
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kirkwood_spi_init();
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}
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/*****************************************************************************
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* I2C devices
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****************************************************************************/
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static struct at24_platform_data at24c04 = {
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.byte_len = SZ_4K / 8,
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.page_size = 16,
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};
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/*
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* i2c addr | chip | description
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* 0x50 | HT24LC04 | eeprom (512B)
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*/
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static struct i2c_board_info __initdata lacie_v2_i2c_info[] = {
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{
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I2C_BOARD_INFO("24c04", 0x50),
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.platform_data = &at24c04,
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}
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};
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void __init lacie_v2_register_i2c_devices(void)
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{
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kirkwood_i2c_init();
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i2c_register_board_info(0, lacie_v2_i2c_info,
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ARRAY_SIZE(lacie_v2_i2c_info));
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}
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/*****************************************************************************
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* Hard Disk power
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****************************************************************************/
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static int __initdata lacie_v2_gpio_hdd_power[] = { 16, 17, 41, 42, 43 };
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void __init lacie_v2_hdd_power_init(int hdd_num)
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{
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int i;
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int err;
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/* Power up all hard disks. */
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for (i = 0; i < hdd_num; i++) {
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err = gpio_request(lacie_v2_gpio_hdd_power[i], NULL);
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if (err == 0) {
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err = gpio_direction_output(
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lacie_v2_gpio_hdd_power[i], 1);
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/* Free the HDD power GPIOs. This allow user-space to
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* configure them via the gpiolib sysfs interface. */
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gpio_free(lacie_v2_gpio_hdd_power[i]);
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}
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if (err)
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pr_err("Failed to power up HDD%d\n", i + 1);
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}
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}
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