454 lines
12 KiB
C
454 lines
12 KiB
C
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/*
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* (c) 2010 STMicroelectronics Limited
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*
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* Author: Pawel Moll <pawel.moll@st.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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#include <linux/init.h>
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#include <linux/platform_device.h>
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#include <linux/i2c.h>
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#include <linux/stm/pad.h>
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#include <linux/stm/emi.h>
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#include <linux/stm/stx5206.h>
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#include <asm/irq-ilc.h>
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/* ASC resources ---------------------------------------------------------- */
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static struct stm_pad_config stx5206_asc_pad_configs[] = {
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[0] = {
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.gpios_num = 4,
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.gpios = (struct stm_pad_gpio []) {
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STM_PAD_PIO_OUT(0, 0, 0), /* TX */
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STM_PAD_PIO_IN(0, 1, -1), /* RX */
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STM_PAD_PIO_IN_NAMED(0, 4, -1, "CTS"),
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STM_PAD_PIO_OUT_NAMED(0, 7, 0, "RTS"),
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},
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},
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[1] = {
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.gpios_num = 4,
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.gpios = (struct stm_pad_gpio []) {
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STM_PAD_PIO_OUT(2, 7, 1), /* TX */
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STM_PAD_PIO_IN(3, 4, -1), /* RX */
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STM_PAD_PIO_IN_NAMED(3, 6, -1, "CTS"),
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STM_PAD_PIO_OUT_NAMED(3, 5, 1, "RTS"),
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},
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},
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[2] = {
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.gpios_num = 4,
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.gpios = (struct stm_pad_gpio []) {
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STM_PAD_PIO_OUT(1, 2, 0), /* TX */
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STM_PAD_PIO_IN(1, 1, -1), /* RX */
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STM_PAD_PIO_IN_NAMED(1, 4, -1, "CTS"),
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STM_PAD_PIO_OUT_NAMED(1, 3, 0, "RTS"),
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},
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},
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[3] = {
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.gpios_num = 4,
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.gpios = (struct stm_pad_gpio []) {
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STM_PAD_PIO_OUT(2, 4, 0), /* TX */
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STM_PAD_PIO_IN(2, 3, -1), /* RX */
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STM_PAD_PIO_IN_NAMED(2, 5, -1, "CTS"),
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STM_PAD_PIO_OUT_NAMED(2, 6, 0, "RTS"),
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},
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},
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};
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static struct platform_device stx5206_asc_devices[] = {
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[0] = {
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.name = "stm-asc",
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/* .id set in stx5206_configure_asc() */
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.num_resources = 4,
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.resource = (struct resource[]) {
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STM_PLAT_RESOURCE_MEM(0xfd030000, 0x2c),
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STM_PLAT_RESOURCE_IRQ(evt2irq(0x1160), -1),
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STM_PLAT_RESOURCE_DMA_NAMED("rx_half_full", 9),
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STM_PLAT_RESOURCE_DMA_NAMED("tx_half_empty", 13),
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},
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.dev.platform_data = &(struct stm_plat_asc_data) {
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.pad_config = &stx5206_asc_pad_configs[0],
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},
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},
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[1] = {
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.name = "stm-asc",
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/* .id set in stx5206_configure_asc() */
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.num_resources = 4,
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.resource = (struct resource[]) {
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STM_PLAT_RESOURCE_MEM(0xfd031000, 0x2c),
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STM_PLAT_RESOURCE_IRQ(evt2irq(0x1140), -1),
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STM_PLAT_RESOURCE_DMA_NAMED("rx_half_full", 10),
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STM_PLAT_RESOURCE_DMA_NAMED("tx_half_empty", 14),
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},
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.dev.platform_data = &(struct stm_plat_asc_data) {
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.pad_config = &stx5206_asc_pad_configs[1],
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},
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},
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[2] = {
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.name = "stm-asc",
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/* .id set in stx5206_configure_asc() */
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.num_resources = 4,
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.resource = (struct resource[]) {
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STM_PLAT_RESOURCE_MEM(0xfd032000, 0x2c),
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STM_PLAT_RESOURCE_IRQ(evt2irq(0x1120), -1),
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STM_PLAT_RESOURCE_DMA_NAMED("rx_half_full", 11),
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STM_PLAT_RESOURCE_DMA_NAMED("tx_half_empty", 15),
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},
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.dev.platform_data = &(struct stm_plat_asc_data) {
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.pad_config = &stx5206_asc_pad_configs[2],
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},
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},
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[3] = {
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.name = "stm-asc",
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/* .id set in stx5206_configure_asc() */
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.num_resources = 4,
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.resource = (struct resource[]) {
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STM_PLAT_RESOURCE_MEM(0xfd033000, 0x2c),
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STM_PLAT_RESOURCE_IRQ(evt2irq(0x1100), -1),
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STM_PLAT_RESOURCE_DMA_NAMED("rx_half_full", 12),
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STM_PLAT_RESOURCE_DMA_NAMED("tx_half_empty", 16),
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},
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.dev.platform_data = &(struct stm_plat_asc_data) {
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.pad_config = &stx5206_asc_pad_configs[3],
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},
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},
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};
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/* Note these three variables are global, and shared with the stasc driver
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* for console bring up prior to platform initialisation. */
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/* the serial console device */
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int __initdata stm_asc_console_device;
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/* Platform devices to register */
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unsigned int __initdata stm_asc_configured_devices_num;
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struct platform_device __initdata
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*stm_asc_configured_devices[ARRAY_SIZE(stx5206_asc_devices)];
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void __init stx5206_configure_asc(int asc, struct stx5206_asc_config *config)
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{
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static int configured[ARRAY_SIZE(stx5206_asc_devices)];
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static int tty_id;
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struct stx5206_asc_config default_config = {};
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struct platform_device *pdev;
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struct stm_plat_asc_data *plat_data;
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BUG_ON(asc < 0 || asc >= ARRAY_SIZE(stx5206_asc_devices));
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BUG_ON(configured[asc]++);
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if (!config)
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config = &default_config;
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pdev = &stx5206_asc_devices[asc];
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plat_data = pdev->dev.platform_data;
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pdev->id = tty_id++;
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plat_data->hw_flow_control = config->hw_flow_control;
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plat_data->txfifo_bug = 1;
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if (!config->hw_flow_control) {
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struct stm_pad_config *pad_config = plat_data->pad_config;
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stm_pad_set_pio_ignored(pad_config, "RTS");
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stm_pad_set_pio_ignored(pad_config, "CTS");
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}
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if (config->is_console)
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stm_asc_console_device = pdev->id;
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stm_asc_configured_devices[stm_asc_configured_devices_num++] = pdev;
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}
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/* Add platform device as configured by board specific code */
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static int __init stx5206_add_asc(void)
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{
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return platform_add_devices(stm_asc_configured_devices,
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stm_asc_configured_devices_num);
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}
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arch_initcall(stx5206_add_asc);
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/* SSC resources ---------------------------------------------------------- */
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/* Pad configuration for I2C mode */
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static struct stm_pad_config stx5206_ssc_i2c_pad_configs[] = {
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/* SSC0 is an internal I2C link - doesn't need any
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* special treatment here... */
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[1] = {
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.gpios_num = 2,
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.gpios = (struct stm_pad_gpio []) {
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STM_PAD_PIO_BIDIR_NAMED(2, 0, 0, "SCL"),
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STM_PAD_PIO_BIDIR_NAMED(2, 1, 0, "SDA"),
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},
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},
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[2] = {
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.gpios_num = 2,
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.gpios = (struct stm_pad_gpio []) {
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STM_PAD_PIO_BIDIR_NAMED(3, 4, 0, "SCL"),
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STM_PAD_PIO_BIDIR_NAMED(3, 5, 0, "SDA"),
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},
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},
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[3] = {
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.gpios_num = 2,
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.gpios = (struct stm_pad_gpio []) {
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STM_PAD_PIO_BIDIR_NAMED(3, 6, 0, "SCL"),
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STM_PAD_PIO_BIDIR_NAMED(3, 7, 0, "SDA"),
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},
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},
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};
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/* Pad configuration for SSC1 in SPI mode */
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static struct stm_pad_config stx5206_ssc1_spi_pad_config = {
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.gpios_num = 3,
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.gpios = (struct stm_pad_gpio []) {
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STM_PAD_PIO_OUT(2, 0, 0), /* SCK */
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STM_PAD_PIO_OUT(2, 1, 0), /* MOSI */
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STM_PAD_PIO_IN(2, 2, -1), /* MISO */
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},
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};
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static struct platform_device stx5206_ssc_devices[] = {
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[0] = {
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/* .name & .id set in stx5206_configure_ssc_*() */
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.num_resources = 2,
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.resource = (struct resource[]) {
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STM_PLAT_RESOURCE_MEM(0xfd040000, 0x110),
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STM_PLAT_RESOURCE_IRQ(evt2irq(0x10e0), -1),
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},
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.dev.platform_data = &(struct stm_plat_ssc_data) {
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/* .pad_config_* set in stx5206_configure_ssc_*() */
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},
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},
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[1] = {
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/* .name & .id set in stx5206_configure_ssc_*() */
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.num_resources = 2,
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.resource = (struct resource[]) {
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STM_PLAT_RESOURCE_MEM(0xfd041000, 0x110),
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STM_PLAT_RESOURCE_IRQ(evt2irq(0x10c0), -1),
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},
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.dev.platform_data = &(struct stm_plat_ssc_data) {
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/* .pad_config_* set in stx5206_configure_ssc_*() */
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},
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},
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[2] = {
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/* .name & .id set in stx5206_configure_ssc_*() */
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.num_resources = 2,
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.resource = (struct resource[]) {
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STM_PLAT_RESOURCE_MEM(0xfd042000, 0x110),
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STM_PLAT_RESOURCE_IRQ(evt2irq(0x10a0), -1),
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},
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.dev.platform_data = &(struct stm_plat_ssc_data) {
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/* .pad_config_* set in stx5206_configure_ssc_*() */
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},
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},
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[3] = {
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/* .name & .id set in stx5206_configure_ssc_*() */
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.num_resources = 2,
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.resource = (struct resource[]) {
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STM_PLAT_RESOURCE_MEM(0xfd043000, 0x110),
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STM_PLAT_RESOURCE_IRQ(evt2irq(0x1080), -1),
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},
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.dev.platform_data = &(struct stm_plat_ssc_data) {
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/* .pad_config_* set in stx5206_configure_ssc_*() */
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},
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},
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};
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static int __initdata stx5206_ssc_configured[ARRAY_SIZE(stx5206_ssc_devices)];
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int __init stx5206_configure_ssc_i2c(int ssc)
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{
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static int i2c_busnum;
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struct stm_plat_ssc_data *plat_data;
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BUG_ON(ssc < 0 || ssc >= ARRAY_SIZE(stx5206_ssc_devices));
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BUG_ON(stx5206_ssc_configured[ssc]);
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stx5206_ssc_configured[ssc] = 1;
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stx5206_ssc_devices[ssc].name = "i2c-stm";
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stx5206_ssc_devices[ssc].id = i2c_busnum;
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plat_data = stx5206_ssc_devices[ssc].dev.platform_data;
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plat_data->pad_config = &stx5206_ssc_i2c_pad_configs[ssc];
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/* I2C bus number reservation (to prevent any hot-plug device
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* from using it) */
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i2c_register_board_info(i2c_busnum, NULL, 0);
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platform_device_register(&stx5206_ssc_devices[ssc]);
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return i2c_busnum++;
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}
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int __init stx5206_configure_ssc_spi(int ssc,
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struct stx5206_ssc_spi_config *config)
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{
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static int spi_busnum;
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struct stm_plat_ssc_data *plat_data;
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/* Only SSC1 can be used as a SPI device */
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BUG_ON(ssc != 1);
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BUG_ON(stx5206_ssc_configured[ssc]);
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stx5206_ssc_configured[ssc] = 1;
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stx5206_ssc_devices[ssc].name = "spi-stm";
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stx5206_ssc_devices[ssc].id = spi_busnum;
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plat_data = stx5206_ssc_devices[ssc].dev.platform_data;
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if (config)
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plat_data->spi_chipselect = config->chipselect;
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plat_data->pad_config = &stx5206_ssc1_spi_pad_config;
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platform_device_register(&stx5206_ssc_devices[ssc]);
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return spi_busnum++;
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}
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/* LiRC resources --------------------------------------------------------- */
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static struct platform_device stx5206_lirc_device = {
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.name = "lirc-stm",
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.id = -1,
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.num_resources = 2,
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.resource = (struct resource []) {
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STM_PLAT_RESOURCE_MEM(0xfd018000, 0x234),
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STM_PLAT_RESOURCE_IRQ(evt2irq(0x11a0), -1),
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},
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.dev.platform_data = &(struct stm_plat_lirc_data) {
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/* The clock settings will be calculated by
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* the driver from the system clock */
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.irbclock = 0, /* use current_cpu data */
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.irbclkdiv = 0, /* automatically calculate */
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.irbperiodmult = 0,
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.irbperioddiv = 0,
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.irbontimemult = 0,
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.irbontimediv = 0,
|
||
|
|
.irbrxmaxperiod = 0x5000,
|
||
|
|
.sysclkdiv = 1,
|
||
|
|
.rxpolarity = 1,
|
||
|
|
},
|
||
|
|
};
|
||
|
|
|
||
|
|
void __init stx5206_configure_lirc(struct stx5206_lirc_config *config)
|
||
|
|
{
|
||
|
|
static int configured;
|
||
|
|
struct stx5206_lirc_config default_config = {};
|
||
|
|
struct stm_plat_lirc_data *plat_data =
|
||
|
|
stx5206_lirc_device.dev.platform_data;
|
||
|
|
struct stm_pad_config *pad_config;
|
||
|
|
|
||
|
|
BUG_ON(configured);
|
||
|
|
configured = 1;
|
||
|
|
|
||
|
|
if (!config)
|
||
|
|
config = &default_config;
|
||
|
|
|
||
|
|
pad_config = stm_pad_config_alloc(3, 0);
|
||
|
|
BUG_ON(!pad_config);
|
||
|
|
|
||
|
|
plat_data->txenabled = config->tx_enabled || config->tx_od_enabled;
|
||
|
|
plat_data->pads = pad_config;
|
||
|
|
|
||
|
|
switch (config->rx_mode) {
|
||
|
|
case stx5206_lirc_rx_disabled:
|
||
|
|
/* Nothing to do */
|
||
|
|
break;
|
||
|
|
case stx5206_lirc_rx_mode_ir:
|
||
|
|
plat_data->rxuhfmode = 0;
|
||
|
|
stm_pad_config_add_pio_in(pad_config, 1, 7, -1);
|
||
|
|
break;
|
||
|
|
case stx5206_lirc_rx_mode_uhf:
|
||
|
|
plat_data->rxuhfmode = 1;
|
||
|
|
stm_pad_config_add_pio_in(pad_config, 1, 7, -1);
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
BUG();
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (config->tx_enabled)
|
||
|
|
stm_pad_config_add_pio_out(pad_config, 3, 3, 0);
|
||
|
|
|
||
|
|
if (config->tx_od_enabled)
|
||
|
|
stm_pad_config_add_pio_out(pad_config, 1, 6, 1);
|
||
|
|
|
||
|
|
platform_device_register(&stx5206_lirc_device);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
/* PWM resources ---------------------------------------------------------- */
|
||
|
|
|
||
|
|
static struct stm_plat_pwm_data stx5206_pwm_platform_data = {
|
||
|
|
.channel_pad_config = {
|
||
|
|
[0] = &(struct stm_pad_config) {
|
||
|
|
.gpios_num = 1,
|
||
|
|
.gpios = (struct stm_pad_gpio []) {
|
||
|
|
STM_PAD_PIO_OUT(3, 0, 0),
|
||
|
|
},
|
||
|
|
},
|
||
|
|
},
|
||
|
|
};
|
||
|
|
|
||
|
|
static struct platform_device stx5206_pwm_device = {
|
||
|
|
.name = "stm-pwm",
|
||
|
|
.id = -1,
|
||
|
|
.num_resources = 2,
|
||
|
|
.resource = (struct resource[]) {
|
||
|
|
STM_PLAT_RESOURCE_MEM(0xfd010000, 0x68),
|
||
|
|
STM_PLAT_RESOURCE_IRQ(evt2irq(0x11c0), -1),
|
||
|
|
},
|
||
|
|
.dev.platform_data = &stx5206_pwm_platform_data,
|
||
|
|
};
|
||
|
|
|
||
|
|
void __init stx5206_configure_pwm(struct stx5206_pwm_config *config)
|
||
|
|
{
|
||
|
|
static int configured;
|
||
|
|
|
||
|
|
BUG_ON(configured);
|
||
|
|
configured = 1;
|
||
|
|
|
||
|
|
/* Just output 0 is available */
|
||
|
|
if (config)
|
||
|
|
stx5206_pwm_platform_data.channel_enabled[0] =
|
||
|
|
config->out_enabled;
|
||
|
|
|
||
|
|
platform_device_register(&stx5206_pwm_device);
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Low Power Controller ---------------------------------------------------- */
|
||
|
|
|
||
|
|
static struct platform_device stx5206_lpc_device = {
|
||
|
|
.name = "stm-rtc",
|
||
|
|
.id = -1,
|
||
|
|
.num_resources = 2,
|
||
|
|
.resource = (struct resource[]){
|
||
|
|
STM_PLAT_RESOURCE_MEM(0xfd008000, 0x600),
|
||
|
|
STM_PLAT_RESOURCE_IRQ(ILC_EXT_IRQ(7), -1),
|
||
|
|
},
|
||
|
|
.dev.platform_data = &(struct stm_plat_rtc_lpc) {
|
||
|
|
.clk_id = "CLKB_LPC",
|
||
|
|
.need_wdt_reset = 1,
|
||
|
|
.irq_edge_level = IRQ_TYPE_EDGE_FALLING,
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
static int __init stx5206_add_lpc(void)
|
||
|
|
{
|
||
|
|
return platform_device_register(&stx5206_lpc_device);
|
||
|
|
}
|
||
|
|
|
||
|
|
module_init(stx5206_add_lpc);
|