forked from Minki/linux
4bd597b633
The mxc-ehci driver calls SoC specific phy initialization right after calling board specific initialization. To offer greater flexibility for boards to setup the phy and to get rid of some unnecessary flags in platform data this patch lets the boards call the SoC specific phy initialization and remove it from the driver. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
390 lines
10 KiB
C
390 lines
10 KiB
C
/*
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* Copyright 2008 Freescale Semiconductor, Inc. All Rights Reserved.
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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 as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <linux/delay.h>
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#include <linux/types.h>
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#include <linux/init.h>
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#include <linux/clk.h>
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#include <linux/irq.h>
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#include <linux/gpio.h>
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#include <linux/platform_device.h>
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#include <linux/mfd/mc13783.h>
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#include <linux/spi/spi.h>
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#include <linux/regulator/machine.h>
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#include <linux/usb/otg.h>
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#include <linux/usb/ulpi.h>
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#include <mach/hardware.h>
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#include <asm/mach-types.h>
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#include <asm/mach/arch.h>
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#include <asm/mach/time.h>
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#include <asm/memory.h>
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#include <asm/mach/map.h>
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#include <mach/common.h>
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#include <mach/iomux-mx3.h>
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#include <mach/3ds_debugboard.h>
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#include <mach/ulpi.h>
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#include "devices-imx31.h"
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#include "devices.h"
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/* CPLD IRQ line for external uart, external ethernet etc */
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#define EXPIO_PARENT_INT IOMUX_TO_IRQ(MX31_PIN_GPIO1_1)
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/*
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* This file contains the board-specific initialization routines.
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*/
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static int mx31_3ds_pins[] = {
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/* UART1 */
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MX31_PIN_CTS1__CTS1,
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MX31_PIN_RTS1__RTS1,
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MX31_PIN_TXD1__TXD1,
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MX31_PIN_RXD1__RXD1,
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IOMUX_MODE(MX31_PIN_GPIO1_1, IOMUX_CONFIG_GPIO),
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/* SPI 1 */
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MX31_PIN_CSPI2_SCLK__SCLK,
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MX31_PIN_CSPI2_MOSI__MOSI,
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MX31_PIN_CSPI2_MISO__MISO,
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MX31_PIN_CSPI2_SPI_RDY__SPI_RDY,
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MX31_PIN_CSPI2_SS0__SS0,
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MX31_PIN_CSPI2_SS2__SS2, /*CS for MC13783 */
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/* MC13783 IRQ */
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IOMUX_MODE(MX31_PIN_GPIO1_3, IOMUX_CONFIG_GPIO),
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/* USB OTG reset */
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IOMUX_MODE(MX31_PIN_USB_PWR, IOMUX_CONFIG_GPIO),
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/* USB OTG */
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MX31_PIN_USBOTG_DATA0__USBOTG_DATA0,
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MX31_PIN_USBOTG_DATA1__USBOTG_DATA1,
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MX31_PIN_USBOTG_DATA2__USBOTG_DATA2,
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MX31_PIN_USBOTG_DATA3__USBOTG_DATA3,
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MX31_PIN_USBOTG_DATA4__USBOTG_DATA4,
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MX31_PIN_USBOTG_DATA5__USBOTG_DATA5,
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MX31_PIN_USBOTG_DATA6__USBOTG_DATA6,
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MX31_PIN_USBOTG_DATA7__USBOTG_DATA7,
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MX31_PIN_USBOTG_CLK__USBOTG_CLK,
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MX31_PIN_USBOTG_DIR__USBOTG_DIR,
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MX31_PIN_USBOTG_NXT__USBOTG_NXT,
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MX31_PIN_USBOTG_STP__USBOTG_STP,
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/*Keyboard*/
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MX31_PIN_KEY_ROW0_KEY_ROW0,
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MX31_PIN_KEY_ROW1_KEY_ROW1,
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MX31_PIN_KEY_ROW2_KEY_ROW2,
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MX31_PIN_KEY_COL0_KEY_COL0,
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MX31_PIN_KEY_COL1_KEY_COL1,
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MX31_PIN_KEY_COL2_KEY_COL2,
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MX31_PIN_KEY_COL3_KEY_COL3,
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/* USB Host 2 */
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IOMUX_MODE(MX31_PIN_USBH2_CLK, IOMUX_CONFIG_FUNC),
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IOMUX_MODE(MX31_PIN_USBH2_DIR, IOMUX_CONFIG_FUNC),
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IOMUX_MODE(MX31_PIN_USBH2_NXT, IOMUX_CONFIG_FUNC),
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IOMUX_MODE(MX31_PIN_USBH2_STP, IOMUX_CONFIG_FUNC),
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IOMUX_MODE(MX31_PIN_USBH2_DATA0, IOMUX_CONFIG_FUNC),
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IOMUX_MODE(MX31_PIN_USBH2_DATA1, IOMUX_CONFIG_FUNC),
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IOMUX_MODE(MX31_PIN_PC_VS2, IOMUX_CONFIG_ALT1),
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IOMUX_MODE(MX31_PIN_PC_BVD1, IOMUX_CONFIG_ALT1),
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IOMUX_MODE(MX31_PIN_PC_BVD2, IOMUX_CONFIG_ALT1),
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IOMUX_MODE(MX31_PIN_PC_RST, IOMUX_CONFIG_ALT1),
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IOMUX_MODE(MX31_PIN_IOIS16, IOMUX_CONFIG_ALT1),
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IOMUX_MODE(MX31_PIN_PC_RW_B, IOMUX_CONFIG_ALT1),
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/* USB Host2 reset */
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IOMUX_MODE(MX31_PIN_USB_BYP, IOMUX_CONFIG_GPIO),
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};
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/*
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* Matrix keyboard
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*/
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static const uint32_t mx31_3ds_keymap[] = {
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KEY(0, 0, KEY_UP),
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KEY(0, 1, KEY_DOWN),
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KEY(1, 0, KEY_RIGHT),
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KEY(1, 1, KEY_LEFT),
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KEY(1, 2, KEY_ENTER),
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KEY(2, 0, KEY_F6),
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KEY(2, 1, KEY_F8),
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KEY(2, 2, KEY_F9),
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KEY(2, 3, KEY_F10),
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};
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static const struct matrix_keymap_data mx31_3ds_keymap_data __initconst = {
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.keymap = mx31_3ds_keymap,
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.keymap_size = ARRAY_SIZE(mx31_3ds_keymap),
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};
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/* Regulators */
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static struct regulator_init_data pwgtx_init = {
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.constraints = {
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.boot_on = 1,
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.always_on = 1,
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},
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};
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static struct regulator_init_data gpo_init = {
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.constraints = {
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.boot_on = 1,
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.always_on = 1,
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}
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};
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static struct mc13xxx_regulator_init_data mx31_3ds_regulators[] = {
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{
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.id = MC13783_REG_PWGT1SPI, /* Power Gate for ARM core. */
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.init_data = &pwgtx_init,
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}, {
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.id = MC13783_REG_PWGT2SPI, /* Power Gate for L2 Cache. */
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.init_data = &pwgtx_init,
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}, {
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.id = MC13783_REG_GPO1, /* Turn on 1.8V */
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.init_data = &gpo_init,
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}, {
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.id = MC13783_REG_GPO3, /* Turn on 3.3V */
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.init_data = &gpo_init,
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},
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};
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/* MC13783 */
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static struct mc13xxx_platform_data mc13783_pdata __initdata = {
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.regulators = mx31_3ds_regulators,
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.num_regulators = ARRAY_SIZE(mx31_3ds_regulators),
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.flags = MC13XXX_USE_REGULATOR | MC13XXX_USE_TOUCHSCREEN
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};
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/* SPI */
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static int spi1_internal_chipselect[] = {
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MXC_SPI_CS(0),
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MXC_SPI_CS(2),
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};
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static const struct spi_imx_master spi1_pdata __initconst = {
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.chipselect = spi1_internal_chipselect,
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.num_chipselect = ARRAY_SIZE(spi1_internal_chipselect),
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};
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static struct spi_board_info mx31_3ds_spi_devs[] __initdata = {
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{
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.modalias = "mc13783",
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.max_speed_hz = 1000000,
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.bus_num = 1,
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.chip_select = 1, /* SS2 */
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.platform_data = &mc13783_pdata,
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.irq = IOMUX_TO_IRQ(MX31_PIN_GPIO1_3),
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.mode = SPI_CS_HIGH,
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},
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};
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/*
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* NAND Flash
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*/
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static const struct mxc_nand_platform_data
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mx31_3ds_nand_board_info __initconst = {
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.width = 1,
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.hw_ecc = 1,
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#ifdef MACH_MX31_3DS_MXC_NAND_USE_BBT
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.flash_bbt = 1,
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#endif
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};
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/*
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* USB OTG
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*/
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#define USB_PAD_CFG (PAD_CTL_DRV_MAX | PAD_CTL_SRE_FAST | PAD_CTL_HYS_CMOS | \
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PAD_CTL_ODE_CMOS | PAD_CTL_100K_PU)
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#define USBOTG_RST_B IOMUX_TO_GPIO(MX31_PIN_USB_PWR)
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#define USBH2_RST_B IOMUX_TO_GPIO(MX31_PIN_USB_BYP)
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static int mx31_3ds_usbotg_init(void)
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{
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int err;
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mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA0, USB_PAD_CFG);
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mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA1, USB_PAD_CFG);
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mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA2, USB_PAD_CFG);
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mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA3, USB_PAD_CFG);
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mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA4, USB_PAD_CFG);
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mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA5, USB_PAD_CFG);
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mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA6, USB_PAD_CFG);
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mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA7, USB_PAD_CFG);
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mxc_iomux_set_pad(MX31_PIN_USBOTG_CLK, USB_PAD_CFG);
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mxc_iomux_set_pad(MX31_PIN_USBOTG_DIR, USB_PAD_CFG);
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mxc_iomux_set_pad(MX31_PIN_USBOTG_NXT, USB_PAD_CFG);
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mxc_iomux_set_pad(MX31_PIN_USBOTG_STP, USB_PAD_CFG);
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err = gpio_request(USBOTG_RST_B, "otgusb-reset");
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if (err) {
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pr_err("Failed to request the USB OTG reset gpio\n");
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return err;
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}
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err = gpio_direction_output(USBOTG_RST_B, 0);
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if (err) {
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pr_err("Failed to drive the USB OTG reset gpio\n");
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goto usbotg_free_reset;
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}
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mdelay(1);
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gpio_set_value(USBOTG_RST_B, 1);
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return 0;
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usbotg_free_reset:
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gpio_free(USBOTG_RST_B);
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return err;
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}
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#if defined(CONFIG_USB_ULPI)
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static int mx31_3ds_otg_init(struct platform_device *pdev)
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{
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return mx31_initialize_usb_hw(pdev->id, MXC_EHCI_POWER_PINS_ENABLED);
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}
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static int mx31_3ds_host2_init(struct platform_device *pdev)
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{
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int err;
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mxc_iomux_set_pad(MX31_PIN_USBH2_CLK, USB_PAD_CFG);
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mxc_iomux_set_pad(MX31_PIN_USBH2_DIR, USB_PAD_CFG);
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mxc_iomux_set_pad(MX31_PIN_USBH2_NXT, USB_PAD_CFG);
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mxc_iomux_set_pad(MX31_PIN_USBH2_STP, USB_PAD_CFG);
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mxc_iomux_set_pad(MX31_PIN_USBH2_DATA0, USB_PAD_CFG);
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mxc_iomux_set_pad(MX31_PIN_USBH2_DATA1, USB_PAD_CFG);
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mxc_iomux_set_pad(MX31_PIN_PC_VS2, USB_PAD_CFG);
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mxc_iomux_set_pad(MX31_PIN_PC_BVD1, USB_PAD_CFG);
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mxc_iomux_set_pad(MX31_PIN_PC_BVD2, USB_PAD_CFG);
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mxc_iomux_set_pad(MX31_PIN_PC_RST, USB_PAD_CFG);
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mxc_iomux_set_pad(MX31_PIN_IOIS16, USB_PAD_CFG);
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mxc_iomux_set_pad(MX31_PIN_PC_RW_B, USB_PAD_CFG);
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err = gpio_request(USBH2_RST_B, "usbh2-reset");
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if (err) {
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pr_err("Failed to request the USB Host 2 reset gpio\n");
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return err;
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}
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err = gpio_direction_output(USBH2_RST_B, 0);
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if (err) {
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pr_err("Failed to drive the USB Host 2 reset gpio\n");
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goto usbotg_free_reset;
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}
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mdelay(1);
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gpio_set_value(USBH2_RST_B, 1);
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mdelay(10);
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return mx31_initialize_usb_hw(pdev->id, MXC_EHCI_POWER_PINS_ENABLED);
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usbotg_free_reset:
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gpio_free(USBH2_RST_B);
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return err;
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}
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static struct mxc_usbh_platform_data otg_pdata __initdata = {
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.init = mx31_3ds_otg_init,
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.portsc = MXC_EHCI_MODE_ULPI,
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};
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static struct mxc_usbh_platform_data usbh2_pdata __initdata = {
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.init = mx31_3ds_host2_init,
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.portsc = MXC_EHCI_MODE_ULPI,
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};
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#endif
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static const struct fsl_usb2_platform_data usbotg_pdata __initconst = {
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.operating_mode = FSL_USB2_DR_DEVICE,
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.phy_mode = FSL_USB2_PHY_ULPI,
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};
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static int otg_mode_host;
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static int __init mx31_3ds_otg_mode(char *options)
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{
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if (!strcmp(options, "host"))
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otg_mode_host = 1;
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else if (!strcmp(options, "device"))
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otg_mode_host = 0;
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else
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pr_info("otg_mode neither \"host\" nor \"device\". "
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"Defaulting to device\n");
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return 0;
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}
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__setup("otg_mode=", mx31_3ds_otg_mode);
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static const struct imxuart_platform_data uart_pdata __initconst = {
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.flags = IMXUART_HAVE_RTSCTS,
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};
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/*!
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* Board specific initialization.
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*/
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static void __init mxc_board_init(void)
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{
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mxc_iomux_setup_multiple_pins(mx31_3ds_pins, ARRAY_SIZE(mx31_3ds_pins),
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"mx31_3ds");
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imx31_add_imx_uart0(&uart_pdata);
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imx31_add_mxc_nand(&mx31_3ds_nand_board_info);
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imx31_add_spi_imx1(&spi1_pdata);
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spi_register_board_info(mx31_3ds_spi_devs,
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ARRAY_SIZE(mx31_3ds_spi_devs));
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imx31_add_imx_keypad(&mx31_3ds_keymap_data);
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mx31_3ds_usbotg_init();
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#if defined(CONFIG_USB_ULPI)
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if (otg_mode_host) {
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otg_pdata.otg = otg_ulpi_create(&mxc_ulpi_access_ops,
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ULPI_OTG_DRVVBUS | ULPI_OTG_DRVVBUS_EXT);
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imx31_add_mxc_ehci_otg(&otg_pdata);
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}
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usbh2_pdata.otg = otg_ulpi_create(&mxc_ulpi_access_ops,
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ULPI_OTG_DRVVBUS | ULPI_OTG_DRVVBUS_EXT);
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imx31_add_mxc_ehci_hs(2, &usbh2_pdata);
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#endif
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if (!otg_mode_host)
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imx31_add_fsl_usb2_udc(&usbotg_pdata);
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if (mxc_expio_init(MX31_CS5_BASE_ADDR, EXPIO_PARENT_INT))
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printk(KERN_WARNING "Init of the debug board failed, all "
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"devices on the debug board are unusable.\n");
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imx31_add_imx2_wdt(NULL);
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}
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static void __init mx31_3ds_timer_init(void)
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{
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mx31_clocks_init(26000000);
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}
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static struct sys_timer mx31_3ds_timer = {
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.init = mx31_3ds_timer_init,
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};
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/*
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* The following uses standard kernel macros defined in arch.h in order to
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* initialize __mach_desc_MX31_3DS data structure.
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*/
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MACHINE_START(MX31_3DS, "Freescale MX31PDK (3DS)")
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/* Maintainer: Freescale Semiconductor, Inc. */
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.boot_params = MX3x_PHYS_OFFSET + 0x100,
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.map_io = mx31_map_io,
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.init_early = imx31_init_early,
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.init_irq = mx31_init_irq,
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.timer = &mx31_3ds_timer,
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.init_machine = mxc_board_init,
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MACHINE_END
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