517 lines
14 KiB
C
517 lines
14 KiB
C
/*
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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/platform.h>
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#include <linux/stm/stx7100.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 stx7100_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, 1), /* 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, 1, "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(1, 0, 1), /* 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, 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(4, 3, 1), /* TX */
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STM_PAD_PIO_IN(4, 2, -1), /* RX */
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STM_PAD_PIO_IN_NAMED(4, 4, -1, "CTS"),
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STM_PAD_PIO_OUT_NAMED(4, 5, 1, "RTS"),
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},
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.sysconfs_num = 1,
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.sysconfs = (struct stm_pad_sysconf []) {
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/* SCIF_PIO_OUT_EN = 0 */
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STM_PAD_SYS_CFG(7, 0, 0, 0),
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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(5, 0, 1), /* TX */
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STM_PAD_PIO_IN(5, 1, -1), /* RX */
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STM_PAD_PIO_IN_NAMED(5, 2, -1, "CTS"),
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STM_PAD_PIO_OUT_NAMED(5, 3, 1, "RTS"),
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},
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},
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};
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static struct platform_device stx7100_asc_devices[] = {
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[0] = {
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.name = "stm-asc",
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/* .id set in stx7100_configure_asc() */
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.num_resources = 4,
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.resource = (struct resource[]) {
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STM_PLAT_RESOURCE_MEM(0x18030000, 0x2c),
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STM_PLAT_RESOURCE_IRQ(123, -1),
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/* DMA Requests set in stx7100_configure_asc() */
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STM_PLAT_RESOURCE_DMA_NAMED("rx_half_full", -1),
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STM_PLAT_RESOURCE_DMA_NAMED("tx_half_empty", -1),
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},
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.dev.platform_data = &(struct stm_plat_asc_data) {
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.pad_config = &stx7100_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 stx7100_configure_asc() */
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.num_resources = 4,
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.resource = (struct resource[]) {
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STM_PLAT_RESOURCE_MEM(0x18031000, 0x2c),
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STM_PLAT_RESOURCE_IRQ(122, -1),
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/* DMA Requests set in stx7100_configure_asc() */
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STM_PLAT_RESOURCE_DMA_NAMED("rx_half_full", -1),
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STM_PLAT_RESOURCE_DMA_NAMED("tx_half_empty", -1),
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},
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.dev.platform_data = &(struct stm_plat_asc_data) {
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.pad_config = &stx7100_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 stx7100_configure_asc() */
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.num_resources = 4,
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.resource = (struct resource[]) {
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STM_PLAT_RESOURCE_MEM(0x18032000, 0x2c),
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STM_PLAT_RESOURCE_IRQ(121, -1),
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/* DMA Requests set in stx7100_configure_asc() */
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STM_PLAT_RESOURCE_DMA_NAMED("rx_half_full", -1),
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STM_PLAT_RESOURCE_DMA_NAMED("tx_half_empty", -1),
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},
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.dev.platform_data = &(struct stm_plat_asc_data) {
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.pad_config = &stx7100_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 stx7100_configure_asc() */
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.num_resources = 4,
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.resource = (struct resource[]) {
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STM_PLAT_RESOURCE_MEM(0x18033000, 0x2c),
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STM_PLAT_RESOURCE_IRQ(120, -1),
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/* DMA Requests set in stx7100_configure_asc() */
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STM_PLAT_RESOURCE_DMA_NAMED("rx_half_full", -1),
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STM_PLAT_RESOURCE_DMA_NAMED("tx_half_empty", -1),
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},
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.dev.platform_data = &(struct stm_plat_asc_data) {
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.pad_config = &stx7100_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 = 0;
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struct platform_device __initdata
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*stm_asc_configured_devices[ARRAY_SIZE(stx7100_asc_devices)];
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void __init stx7100_configure_asc(int asc, struct stx7100_asc_config *config)
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{
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static int configured[ARRAY_SIZE(stx7100_asc_devices)];
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static int tty_id;
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struct stx7100_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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unsigned int fdma_requests_7100[][2] = {
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[0] = { 14, 18 }, /* rx_half_full, tx_half_empty */
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[1] = { 15, 19 },
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[2] = { 16, 20 },
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[3] = { 17, 21 },
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};
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unsigned int fdma_requests_7109[][2] = {
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[0] = { 12, 16 }, /* rx_half_full, tx_half_empty */
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[1] = { 13, 17 },
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[2] = { 14, 18 },
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[3] = { 15, 19 },
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};
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BUG_ON(asc < 0 || asc >= ARRAY_SIZE(stx7100_asc_devices));
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BUG_ON(configured[asc]);
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configured[asc] = 1;
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if (!config)
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config = &default_config;
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if (!config->hw_flow_control) {
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stm_pad_set_pio_ignored(&stx7100_asc_pad_configs[asc], "RTS");
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stm_pad_set_pio_ignored(&stx7100_asc_pad_configs[asc], "CTS");
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}
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pdev = &stx7100_asc_devices[asc];
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plat_data = pdev->dev.platform_data;
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switch (cpu_data->type) {
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case CPU_STX7100:
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pdev->resource[2].start = fdma_requests_7100[asc][0];
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pdev->resource[2].end = fdma_requests_7100[asc][0];
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pdev->resource[3].start = fdma_requests_7100[asc][1];
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pdev->resource[3].end = fdma_requests_7100[asc][1];
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break;
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case CPU_STX7109:
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pdev->resource[2].start = fdma_requests_7109[asc][0];
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pdev->resource[2].end = fdma_requests_7109[asc][0];
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pdev->resource[3].start = fdma_requests_7109[asc][1];
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pdev->resource[3].end = fdma_requests_7109[asc][1];
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break;
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default:
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BUG();
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break;
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}
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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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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 stx7100_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(stx7100_add_asc);
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/* SSC resources ---------------------------------------------------------- */
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/* Pad configuration for I2C/SSC mode */
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static struct stm_pad_config stx7100_ssc_i2c_pad_configs[] = {
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[0] = {
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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, 1, "SCL"),
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STM_PAD_PIO_BIDIR_NAMED(2, 1, 1, "SDA"),
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},
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.sysconfs_num = 2,
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.sysconfs = (struct stm_pad_sysconf []) {
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/* SSC0_MUX_SEL = 0 (default assignment) */
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STM_PAD_SYS_CFG(7, 1, 1, 0),
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/* DVO_OUT_ON = 0 (SSC not DVO) */
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STM_PAD_SYS_CFG(7, 10, 10, 0),
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},
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},
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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(3, 0, 1, "SCL"),
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STM_PAD_PIO_BIDIR_NAMED(3, 1, 1, "SDA"),
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},
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.sysconfs_num = 2,
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.sysconfs = (struct stm_pad_sysconf []) {
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/* SSC1_MUX_SEL = 0 (default assignment) */
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STM_PAD_SYS_CFG(7, 2, 2, 0),
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/* DVO_OUT_ON = 0 (SSC not DVO) */
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STM_PAD_SYS_CFG(7, 10, 10, 0),
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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(4, 0, 1, "SCL"),
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STM_PAD_PIO_BIDIR_NAMED(4, 1, 1, "SDA"),
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},
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.sysconfs_num = 1,
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.sysconfs = (struct stm_pad_sysconf []) {
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/* SSC2_MUX_SEL = 0 (separate PIOs) */
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STM_PAD_SYS_CFG(7, 3, 3, 0),
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},
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},
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};
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/* Pad configuration for SPI/SSC mode */
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static struct stm_pad_config stx7100_ssc_spi_pad_configs[] = {
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[0] = {
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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, 1), /* SCK */
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STM_PAD_PIO_OUT(2, 1, 1), /* MOSI */
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STM_PAD_PIO_IN(2, 2, -1), /* MISO */
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},
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.sysconfs_num = 2,
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.sysconfs = (struct stm_pad_sysconf []) {
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/* SSC0_MUX_SEL = 0 (default assignment) */
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STM_PAD_SYS_CFG(7, 1, 1, 0),
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/* DVO_OUT_ON = 0 (SSC not DVO) */
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STM_PAD_SYS_CFG(7, 10, 10, 0),
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},
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},
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[1] = {
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.gpios_num = 3,
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.gpios = (struct stm_pad_gpio []) {
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STM_PAD_PIO_OUT(3, 0, 1), /* SCK */
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STM_PAD_PIO_OUT(3, 1, 1), /* MOSI */
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STM_PAD_PIO_IN(3, 2, -1), /* MISO */
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},
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.sysconfs_num = 2,
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.sysconfs = (struct stm_pad_sysconf []) {
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/* SSC1_MUX_SEL = 0 (default assignment) */
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STM_PAD_SYS_CFG(7, 2, 2, 0),
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/* DVO_OUT_ON = 0 (SSC not DVO) */
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STM_PAD_SYS_CFG(7, 10, 10, 0),
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},
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},
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};
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static struct platform_device stx7100_ssc_devices[] = {
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[0] = {
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/* .name & .id set in stx7100_configure_ssc_*() */
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.num_resources = 2,
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.resource = (struct resource[]) {
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STM_PLAT_RESOURCE_MEM(0x18040000, 0x110),
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STM_PLAT_RESOURCE_IRQ(119, -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 stx7100_configure_ssc_*() */
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},
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},
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[1] = {
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/* .name & .id set in stx7100_configure_ssc_*() */
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.num_resources = 2,
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.resource = (struct resource[]) {
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STM_PLAT_RESOURCE_MEM(0x18041000, 0x110),
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STM_PLAT_RESOURCE_IRQ(118, -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 stx7100_configure_ssc_*() */
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},
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},
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[2] = {
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/* .name & .id set in stx7100_configure_ssc_*() */
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.num_resources = 2,
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.resource = (struct resource[]) {
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STM_PLAT_RESOURCE_MEM(0x18042000, 0x110),
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STM_PLAT_RESOURCE_IRQ(117, -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 stx7100_configure_ssc_*() */
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},
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},
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};
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static int __initdata stx7100_ssc_configured[ARRAY_SIZE(stx7100_ssc_devices)];
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int __init stx7100_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(stx7100_ssc_devices));
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BUG_ON(stx7100_ssc_configured[ssc]);
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stx7100_ssc_configured[ssc] = 1;
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stx7100_ssc_devices[ssc].name = "i2c-stm";
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stx7100_ssc_devices[ssc].id = i2c_busnum;
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plat_data = stx7100_ssc_devices[ssc].dev.platform_data;
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plat_data->pad_config = &stx7100_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(&stx7100_ssc_devices[ssc]);
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return i2c_busnum++;
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}
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int __init stx7100_configure_ssc_spi(int ssc,
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struct stx7100_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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BUG_ON(ssc < 0 || ssc >= ARRAY_SIZE(stx7100_ssc_devices));
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BUG_ON(stx7100_ssc_configured[ssc]);
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stx7100_ssc_configured[ssc] = 1;
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/* SSC2 can't be used in SPI mode - there is no MRST pin available */
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BUG_ON(ssc == 2);
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stx7100_ssc_devices[ssc].name = "spi-stm";
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stx7100_ssc_devices[ssc].id = spi_busnum;
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plat_data = stx7100_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 = &stx7100_ssc_spi_pad_configs[ssc];
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platform_device_register(&stx7100_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 stx7100_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(0x18018000, 0x234),
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STM_PLAT_RESOURCE_IRQ(125, -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,
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.irbrxmaxperiod = 0x5000,
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.sysclkdiv = 1,
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.rxpolarity = 1,
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},
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};
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void __init stx7100_configure_lirc(struct stx7100_lirc_config *config)
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{
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static int configured;
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struct stx7100_lirc_config default_config = {};
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struct stm_plat_lirc_data *plat_data =
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stx7100_lirc_device.dev.platform_data;
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struct stm_pad_config *pad_config;
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BUG_ON(configured);
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configured = 1;
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if (!config)
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config = &default_config;
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pad_config = stm_pad_config_alloc(3, 0);
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BUG_ON(!pad_config);
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plat_data->txenabled = config->tx_enabled || config->tx_od_enabled;
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plat_data->pads = pad_config;
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switch (config->rx_mode) {
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case stx7100_lirc_rx_disabled:
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/* Nothing to do */
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break;
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case stx7100_lirc_rx_mode_ir:
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plat_data->rxuhfmode = 0;
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stm_pad_config_add_pio_in(pad_config, 3, 3, -1);
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break;
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case stx7100_lirc_rx_mode_uhf:
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plat_data->rxuhfmode = 1;
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stm_pad_config_add_pio_in(pad_config, 3, 4, -1);
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break;
|
|
default:
|
|
BUG();
|
|
break;
|
|
}
|
|
|
|
if (config->tx_enabled)
|
|
stm_pad_config_add_pio_out(pad_config, 3, 5, 1);
|
|
|
|
if (config->tx_od_enabled)
|
|
stm_pad_config_add_pio_out(pad_config, 3, 6, 1);
|
|
|
|
platform_device_register(&stx7100_lirc_device);
|
|
}
|
|
|
|
|
|
|
|
/* PWM resources ---------------------------------------------------------- */
|
|
|
|
static struct stm_plat_pwm_data stx7100_pwm_platform_data = {
|
|
.channel_pad_config = {
|
|
[0] = &(struct stm_pad_config) {
|
|
.gpios_num = 1,
|
|
.gpios = (struct stm_pad_gpio []) {
|
|
STM_PAD_PIO_OUT(4, 6, 1),
|
|
},
|
|
.sysconfs_num = 1,
|
|
.sysconfs = (struct stm_pad_sysconf []) {
|
|
/* SCIF_PIO_OUT_EN = 0
|
|
* (regular PIO, not the SCIF output) */
|
|
STM_PAD_SYS_CFG(7, 0, 0, 0),
|
|
},
|
|
},
|
|
[1] = &(struct stm_pad_config) {
|
|
.gpios_num = 1,
|
|
.gpios = (struct stm_pad_gpio []) {
|
|
STM_PAD_PIO_OUT(4, 7, 1),
|
|
},
|
|
},
|
|
},
|
|
};
|
|
|
|
static struct platform_device stx7100_pwm_device = {
|
|
.name = "stm-pwm",
|
|
.id = -1,
|
|
.num_resources = 2,
|
|
.resource = (struct resource[]) {
|
|
STM_PLAT_RESOURCE_MEM(0x18010000, 0x68),
|
|
STM_PLAT_RESOURCE_IRQ(126, -1),
|
|
},
|
|
.dev.platform_data = &stx7100_pwm_platform_data,
|
|
};
|
|
|
|
void __init stx7100_configure_pwm(struct stx7100_pwm_config *config)
|
|
{
|
|
static int configured;
|
|
|
|
BUG_ON(configured);
|
|
configured = 1;
|
|
|
|
if (config) {
|
|
stx7100_pwm_platform_data.channel_enabled[0] =
|
|
config->out0_enabled;
|
|
stx7100_pwm_platform_data.channel_enabled[1] =
|
|
config->out1_enabled;
|
|
}
|
|
|
|
platform_device_register(&stx7100_pwm_device);
|
|
}
|
|
|