547 lines
15 KiB
C
547 lines
15 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/stx7111.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 stx7111_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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.sysconfs_num = 1, /* !!! see stx7111_configure_asc() */
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.sysconfs = (struct stm_pad_sysconf []) {
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/* PDES_SCMUX_OUT = 0: route UART0 instead of PDES
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* to pins. According to note against
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* SYSCFG7[7] this bit is in the PDES block.
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* Lets just hope it powers up in UART mode! */
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/* Route CTS instead of emiss_bus_request[2] to pins */
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STM_PAD_SYS_CFG(5, 3, 3, 0),
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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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.sysconfs_num = 2, /* !!! see stx7111_configure_asc() */
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.sysconfs = (struct stm_pad_sysconf []) {
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/* Route CTS instead of emiss_bus_free_accesspend_in
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* to pins */
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STM_PAD_SYS_CFG(5, 6, 6, 0),
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/* Route RTS instead of PCI_PME_OUT to pins */
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STM_PAD_SYS_CFG(5, 7, 7, 0),
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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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},
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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 stx7111_asc_devices[] = {
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[0] = {
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.name = "stm-asc",
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/* .id set in stx7111_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", 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 = &stx7111_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 stx7111_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", 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 = &stx7111_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 stx7111_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", 13),
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STM_PLAT_RESOURCE_DMA_NAMED("tx_half_empty", 17),
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},
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.dev.platform_data = &(struct stm_plat_asc_data) {
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.pad_config = &stx7111_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 stx7111_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", 14),
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STM_PLAT_RESOURCE_DMA_NAMED("tx_half_empty", 18),
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},
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.dev.platform_data = &(struct stm_plat_asc_data) {
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.pad_config = &stx7111_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(stx7111_asc_devices)];
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void __init stx7111_configure_asc(int asc, struct stx7111_asc_config *config)
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{
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static int configured[ARRAY_SIZE(stx7111_asc_devices)];
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static int tty_id;
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struct stx7111_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(stx7111_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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struct stm_pad_config *pad_config =
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&stx7111_asc_pad_configs[asc];
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/* Don't claim RTS/CTS pads */
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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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/* sysconf values responsible for RTS/CTS routing
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* are defined as the last ones... */
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if (asc == 0)
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pad_config->sysconfs_num--;
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else if (asc == 1)
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pad_config->sysconfs_num -= 2;
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}
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pdev = &stx7111_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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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 stx7111_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(stx7111_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 stx7111_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 = 1,
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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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/* spi_boot_not_comm = 0 should be set here... */
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/* This is a signal from SPI block */
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/* Hope this is set correctly by default */
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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 = 3,
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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=0 */
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STM_PAD_SYS_CFG(7, 10, 10, 0),
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/* Select SSC1 instead of PCI interrupts */
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/* Early datasheet version erroneously said 9-11 */
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STM_PAD_SYS_CFG(5, 11, 12, 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 (default assignment) */
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STM_PAD_SYS_CFG(7, 3, 3, 0),
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},
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},
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/* SSC3 is an internal I2C link - doesn't need any
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* special treatment here... */
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};
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/* Pad configuration for SPI mode */
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static struct stm_pad_config stx7111_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 = 1,
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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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/* spi_boot_not_comm = 0 should be set here... */
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/* This is a signal from SPI block */
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/* Hope this is set correctly by default */
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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 = 3,
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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=0 */
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STM_PAD_SYS_CFG(7, 10, 10, 0),
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/* Select SSC1 instead of PCI interrupts */
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/* Early datasheet version erroneously said 9-11 */
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STM_PAD_SYS_CFG(5, 10, 12, 0),
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},
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},
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};
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static struct platform_device stx7111_ssc_devices[] = {
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[0] = {
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/* .name & .id set in stx7111_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 stx7111_configure_ssc_*() */
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},
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},
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[1] = {
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/* .name & .id set in stx7111_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 stx7111_configure_ssc_*() */
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},
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},
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[2] = {
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/* .name & .id set in stx7111_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 stx7111_configure_ssc_*() */
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},
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},
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[3] = {
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/* .name & .id set in stx7111_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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/* That's an internal I2C link - nothing
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* to say here actually... */
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},
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},
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};
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static int __initdata stx7111_ssc_configured[ARRAY_SIZE(stx7111_ssc_devices)];
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int __init stx7111_configure_ssc_i2c(int ssc)
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{
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static int i2c_busnum;
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BUG_ON(ssc < 0 || ssc >= ARRAY_SIZE(stx7111_ssc_devices));
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BUG_ON(stx7111_ssc_configured[ssc]);
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stx7111_ssc_configured[ssc] = 1;
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stx7111_ssc_devices[ssc].name = "i2c-stm";
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stx7111_ssc_devices[ssc].id = i2c_busnum;
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/* The SSC3 is an internal I2C link and is hard-wired -
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* no pads to be claimed here... */
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if (ssc < 3) {
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struct stm_plat_ssc_data *plat_data =
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stx7111_ssc_devices[ssc].dev.platform_data;
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plat_data->pad_config =
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&stx7111_ssc_i2c_pad_configs[ssc];
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}
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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(&stx7111_ssc_devices[ssc]);
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return i2c_busnum++;
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}
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int __init stx7111_configure_ssc_spi(int ssc,
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struct stx7111_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(stx7111_ssc_devices));
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BUG_ON(stx7111_ssc_configured[ssc]);
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stx7111_ssc_configured[ssc] = 1;
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/* Only first two SSC can be used in SPI mode */
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BUG_ON(ssc > 1);
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stx7111_ssc_devices[ssc].name = "spi-stm";
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stx7111_ssc_devices[ssc].id = spi_busnum;
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plat_data = stx7111_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 = &stx7111_ssc_spi_pad_configs[ssc];
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platform_device_register(&stx7111_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 stx7111_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,
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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 stx7111_configure_lirc(struct stx7111_lirc_config *config)
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{
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static int configured;
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struct stx7111_lirc_config default_config = {};
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struct stm_plat_lirc_data *plat_data =
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stx7111_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) {
|
|
case stx7111_lirc_rx_disabled:
|
|
/* Nothing to do */
|
|
break;
|
|
case stx7111_lirc_rx_mode_ir:
|
|
plat_data->rxuhfmode = 0;
|
|
stm_pad_config_add_pio_in(pad_config, 3, 3, -1);
|
|
break;
|
|
case stx7111_lirc_rx_mode_uhf:
|
|
plat_data->rxuhfmode = 1;
|
|
stm_pad_config_add_pio_in(pad_config, 3, 4, -1);
|
|
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(&stx7111_lirc_device);
|
|
}
|
|
|
|
|
|
|
|
/* PWM resources ---------------------------------------------------------- */
|
|
|
|
static struct stm_plat_pwm_data stx7111_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),
|
|
},
|
|
},
|
|
[1] = &(struct stm_pad_config) {
|
|
.gpios_num = 1,
|
|
.gpios = (struct stm_pad_gpio []) {
|
|
STM_PAD_PIO_OUT(4, 7, 1),
|
|
},
|
|
},
|
|
},
|
|
};
|
|
|
|
static struct platform_device stx7111_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 = &stx7111_pwm_platform_data,
|
|
};
|
|
|
|
void __init stx7111_configure_pwm(struct stx7111_pwm_config *config)
|
|
{
|
|
static int configured;
|
|
|
|
BUG_ON(configured);
|
|
configured = 1;
|
|
|
|
if (config) {
|
|
stx7111_pwm_platform_data.channel_enabled[0] =
|
|
config->out0_enabled;
|
|
stx7111_pwm_platform_data.channel_enabled[1] =
|
|
config->out1_enabled;
|
|
}
|
|
|
|
platform_device_register(&stx7111_pwm_device);
|
|
}
|
|
|
|
/* Low Power Controller ---------------------------------------------------- */
|
|
|
|
static struct platform_device stx7111_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 stx7111_add_lpc(void)
|
|
{
|
|
return platform_device_register(&stx7111_lpc_device);
|
|
}
|
|
|
|
module_init(stx7111_add_lpc);
|