340 lines
8.9 KiB
C
340 lines
8.9 KiB
C
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/*
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* arch/sh/boards/st/mb680/setup.c
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*
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* Copyright (C) 2008 STMicroelectronics Limited
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* Author: Stuart Menefy (stuart.menefy@st.com)
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*
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* May be copied or modified under the terms of the GNU General Public
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* License. See linux/COPYING for more information.
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*
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* STMicroelectronics STx7105 Mboard support.
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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/delay.h>
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#include <linux/io.h>
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#include <linux/phy.h>
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#include <linux/leds.h>
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#include <linux/lirc.h>
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#include <linux/gpio.h>
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#include <linux/gpio_keys.h>
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#include <linux/input.h>
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#include <linux/stm/platform.h>
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#include <linux/stm/stx7105.h>
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#include <linux/stm/pci-glue.h>
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#include <linux/mtd/mtd.h>
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#include <linux/mtd/physmap.h>
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#include <linux/mtd/partitions.h>
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#include <linux/spi/spi_gpio.h>
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#include <asm/irq-ilc.h>
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#include <mach/common.h>
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#include "../mach-st/mb705-epld.h"
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#define MB680_PIO_PHY_RESET stm_gpio(5, 5)
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#define MB680_PIO_PCI_SERR stm_gpio(6, 4)
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#define MB680_PIO_PCI_RESET stm_gpio(15, 6)
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#define MB680_PIO_MII_BUS_SWITCH stm_gpio(11, 2)
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static void __init mb680_setup(char** cmdline_p)
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{
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printk(KERN_INFO "STMicroelectronics STx7105 Mboard initialisation\n");
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stx7105_early_device_init();
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stx7105_configure_asc(2, &(struct stx7105_asc_config) {
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.routing.asc2 = stx7105_asc2_pio4,
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.hw_flow_control = 1,
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.is_console = 1, });
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stx7105_configure_asc(3, &(struct stx7105_asc_config) {
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.hw_flow_control = 1,
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.is_console = 0, });
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}
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static struct platform_device mb680_leds = {
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.name = "leds-gpio",
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.id = 0,
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.dev.platform_data = &(struct gpio_led_platform_data) {
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.num_leds = 2,
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.leds = (struct gpio_led[]) {
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{
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.name = "LD5",
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.default_trigger = "heartbeat",
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.gpio = stm_gpio(2, 4),
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}, {
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.name = "LD6",
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.gpio = stm_gpio(2, 3),
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},
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},
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},
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};
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/*
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* mb680 rev C added software control of the PHY reset, and buffers which
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* allow isolation of the MII pins so that their use as MODE pins is not
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* compromised by the PHY.
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*/
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/*
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* When connected to the mb705, MII reset is controlled by an EPLD register
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* on the mb705.
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* When used standalone a PIO pin is used, and J47-C must be fitted.
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*
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* Timings:
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* PHY | Reset low | Post reset stabilisation
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* ------------+-----------+-------------------------
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* DB83865 | 150uS | 20mS
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* LAN8700 | 100uS | 800nS
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*/
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#ifdef CONFIG_SH_ST_MB705
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static void ll_phy_reset(void)
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{
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mb705_reset(EPLD_EMI_RESET_SW0, 150);
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}
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#else
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static void ll_phy_reset(void)
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{
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gpio_set_value(MB680_PIO_PHY_RESET, 0);
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udelay(150);
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gpio_set_value(MB680_PIO_PHY_RESET, 1);
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}
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#endif
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static int mb680_phy_reset(void *bus)
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{
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gpio_set_value(MB680_PIO_MII_BUS_SWITCH, 1);
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ll_phy_reset();
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gpio_set_value(MB680_PIO_MII_BUS_SWITCH, 0);
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mdelay(20);
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return 0;
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}
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static struct stmmac_mdio_bus_data stmmac_mdio_bus = {
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.bus_id = 0,
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.phy_reset = mb680_phy_reset,
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.phy_mask = 0,
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};
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static struct platform_device *mb680_devices[] __initdata = {
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&mb680_leds,
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};
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/* PCI configuration */
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#ifdef CONFIG_SH_ST_MB705
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static void mb705_epld_pci_reset(void)
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{
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mb705_reset(EPLD_EMI_RESET_SW1, 1000);
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/* PCI spec says one second */
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mdelay(10);
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}
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#endif
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/*
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* J22-A must be removed, J22-B must be 2-3.
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*/
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static struct stm_plat_pci_config mb680_pci_config = {
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.pci_irq = {
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[0] = PCI_PIN_DEFAULT,
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[1] = PCI_PIN_DEFAULT,
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[2] = PCI_PIN_DEFAULT,
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[3] = PCI_PIN_UNUSED
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},
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.serr_irq = PCI_PIN_UNUSED, /* Modified in mb680_device_init() below */
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.idsel_lo = 30,
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.idsel_hi = 30,
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.req_gnt = {
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[0] = PCI_PIN_DEFAULT,
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[1] = PCI_PIN_UNUSED,
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[2] = PCI_PIN_UNUSED,
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[3] = PCI_PIN_UNUSED
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},
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.pci_clk = 33333333,
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/* When connected to the mb705, PCI reset is controlled by an EPLD
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* register on the mb705. When used standalone a PIO pin is used,
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* and J47-D, J9-G must be fitted. */
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#ifdef CONFIG_SH_ST_MB705
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.pci_reset = mb705_epld_pci_reset,
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#else
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.pci_reset_gpio = MB680_PIO_PCI_RESET,
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#endif
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};
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int pcibios_map_platform_irq(struct pci_dev *dev, u8 slot, u8 pin)
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{
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/* We can use the standard function on this board */
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return stx7105_pcibios_map_platform_irq(&mb680_pci_config, pin);
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}
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void __init mbxxx_configure_audio_pins(int *pcm_reader, int *pcm_player)
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{
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*pcm_reader = -1;
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*pcm_player = 0;
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stx7105_configure_audio(&(struct stx7105_audio_config) {
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.pcm_player_0_output =
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stx7105_pcm_player_0_output_6_channels,
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.spdif_player_output_enabled = 1,
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.pcm_reader_input_enabled =
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cpu_data->type == CPU_STX7105, });
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}
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#ifdef CONFIG_SH_ST_MB705
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void __init mbxxx_configure_nand_flash(struct stm_nand_config *config)
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{
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stx7105_configure_nand(config);
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}
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/* GPIO based SPI */
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static struct platform_device mb680_serial_flash_bus = {
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.name = "spi_gpio",
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.id = 8,
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.num_resources = 0,
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.dev.platform_data = &(struct spi_gpio_platform_data) {
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.sck = stm_gpio(15, 0),
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.mosi = stm_gpio(15, 1),
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.miso = stm_gpio(15, 3),
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.num_chipselect = 1,
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},
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};
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void __init mbxxx_configure_serial_flash(struct spi_board_info *serial_flash)
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{
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/* Specify CSn and SPI bus */
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serial_flash->bus_num = 8;
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serial_flash->controller_data = (void *)stm_gpio(15, 2);
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/* Register SPI bus and flash devices */
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platform_device_register(&mb680_serial_flash_bus);
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spi_register_board_info(serial_flash, 1);
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}
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#endif
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static int __init mb680_devices_init(void)
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{
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/* Setup the PCI_SERR# PIO
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* J20-A - open, J27-E - closed */
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if (gpio_request(MB680_PIO_PCI_SERR, "PCI_SERR#") == 0) {
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gpio_direction_input(MB680_PIO_PCI_SERR);
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mb680_pci_config.serr_irq = gpio_to_irq(MB680_PIO_PCI_SERR);
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set_irq_type(mb680_pci_config.serr_irq, IRQ_TYPE_LEVEL_LOW);
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} else {
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printk(KERN_WARNING "mb680: Failed to claim PCI_SERR PIO!\n");
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}
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stx7105_configure_pci(&mb680_pci_config);
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stx7105_configure_sata(0);
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/* Valid only for mb680 rev. A & rev. B (they had two SATA lines) */
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stx7105_configure_sata(1);
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stx7105_configure_pwm(&(struct stx7105_pwm_config) {
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.out0 = stx7105_pwm_out0_pio13_0,
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.out1 = stx7105_pwm_out1_disabled, });
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/* NIM CD I2C bus*/
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stx7105_configure_ssc_i2c(1, &(struct stx7105_ssc_config) {
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.routing.ssc1.sclk = stx7105_ssc1_sclk_pio2_5,
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.routing.ssc1.mtsr = stx7105_ssc1_mtsr_pio2_6, });
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/* NIM AB/STRecord I2C bus*/
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stx7105_configure_ssc_i2c(2, &(struct stx7105_ssc_config) {
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.routing.ssc2.sclk = stx7105_ssc2_sclk_pio3_4,
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.routing.ssc2.mtsr = stx7105_ssc2_mtsr_pio3_5, });
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/* HDMI I2C bus */
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stx7105_configure_ssc_i2c(3, &(struct stx7105_ssc_config) {
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.routing.ssc3.sclk = stx7105_ssc3_sclk_pio3_6,
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.routing.ssc3.mtsr = stx7105_ssc3_mtsr_pio3_7, });
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/*
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* Note that USB port configuration depends on jumper
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* settings:
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*
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* PORT 0 PORT 1
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* +-----------------------------------------------------------
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* norm | 4[4] J5A:2-3 4[6] J10A:2-3
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* alt | 12[5] J5A:1-2 J6F:open 14[6] J10A:1-2 J11G:open
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* norm | 4[5] J5B:2-3 4[7] J10B:2-3
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* alt | 12[6] J5B:1-2 J6G:open 14[7] J10B:1-2 J11H:open
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*/
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stx7105_configure_usb(0, &(struct stx7105_usb_config) {
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.ovrcur_mode = stx7105_usb_ovrcur_active_low,
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.pwr_enabled = 1,
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.routing.usb0.ovrcur = stx7105_usb0_ovrcur_pio4_4,
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.routing.usb0.pwr = stx7105_usb0_pwr_pio4_5, });
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stx7105_configure_usb(1, &(struct stx7105_usb_config) {
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.ovrcur_mode = stx7105_usb_ovrcur_active_low,
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.pwr_enabled = 1,
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.routing.usb1.ovrcur = stx7105_usb1_ovrcur_pio4_6,
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.routing.usb1.pwr = stx7105_usb1_pwr_pio4_7, });
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gpio_request(MB680_PIO_PHY_RESET, "notPioResetMII");
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gpio_direction_output(MB680_PIO_PHY_RESET, 1);
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gpio_request(MB680_PIO_MII_BUS_SWITCH, "MIIBusSwitchnotOE");
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gpio_direction_output(MB680_PIO_MII_BUS_SWITCH, 1);
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stx7105_configure_ethernet(0, &(struct stx7105_ethernet_config) {
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.mode = stx7105_ethernet_mode_mii,
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.ext_clk = 1,
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.phy_bus = 0,
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.phy_addr = -1,
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.mdio_bus_data = &stmmac_mdio_bus,
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});
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/*
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* Check jumpers before using IR:
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* On the mb705:
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* J25A : 1-2
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* J25B : 1-2 (UHF), 2-3 (IR)
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* On the mb680:
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* J15A : fitted
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*/
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stx7105_configure_lirc(&(struct stx7105_lirc_config) {
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#ifdef CONFIG_LIRC_STM_UHF
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.rx_mode = stx7105_lirc_rx_mode_uhf,
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#else
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.rx_mode = stx7105_lirc_rx_mode_ir,
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#endif
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.tx_enabled = 1,
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.tx_od_enabled = 1, });
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return platform_add_devices(mb680_devices, ARRAY_SIZE(mb680_devices));
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}
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arch_initcall(mb680_devices_init);
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static void __iomem *mb680_ioport_map(unsigned long port, unsigned int size)
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{
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/*
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* If we have PCI then this should never be called because we
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* are using the generic iomap implementation. If we don't
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* have PCI then there are no IO mapped devices, so it still
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* shouldn't be called.
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*/
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BUG();
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return (void __iomem *)CCN_PVR;
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}
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static void __init mb680_init_irq(void)
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{
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#ifndef CONFIG_SH_ST_MB705
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/* Configure STEM interrupts as active low. */
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set_irq_type(ILC_EXT_IRQ(1), IRQ_TYPE_LEVEL_LOW);
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set_irq_type(ILC_EXT_IRQ(2), IRQ_TYPE_LEVEL_LOW);
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#endif
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}
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struct sh_machine_vector mv_mb680 __initmv = {
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.mv_name = "STx7105 Mboard",
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.mv_setup = mb680_setup,
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.mv_nr_irqs = NR_IRQS,
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.mv_init_irq = mb680_init_irq,
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.mv_ioport_map = mb680_ioport_map,
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STM_PCI_IO_MACHINE_VEC
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};
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