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3b972bf06c
Otherwise omap_device_build() and omap_mux related functions can't be marked as __init when twl is build as a module. If a board is using GPIO pins or regulators configured by an external chip, such as TWL PMIC on I2C bus, the board must mark those MMC controllers as deferred. Additionally both omap_hsmmc_init() and omap_hsmmc_late_init() must be called by the board. For MMC controllers using internal GPIO pins for card detect and regulators the slots don't need to be marked deferred. In this case calling omap_hsmmc_init() is sufficient. Only mark the MMC slots using gpio_cd or gpio_wd as deferred as noted by Igor Grinberg <grinberg@compulab.co.il>. Note that this patch does not change the behaviour for board-4430sdp.c board-omap4panda.c. These boards wrongly rely on the omap_hsmmc.c init function callback to configure the PMIC GPIO interrupt lines on external chip. If the PMIC interrupt lines are not configured during init, they will fail. Reported-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Rajendra Nayak <rnayak@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
227 lines
6.0 KiB
C
227 lines
6.0 KiB
C
/*
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* linux/arch/arm/mach-omap2/board-omap3logic.c
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*
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* Copyright (C) 2010 Li-Pro.Net
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* Stephan Linz <linz@li-pro.net>
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*
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* Copyright (C) 2010 Logic Product Development, Inc.
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* Peter Barada <peter.barada@logicpd.com>
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*
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* Modified from Beagle, EVM, and RX51
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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/kernel.h>
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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/err.h>
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#include <linux/clk.h>
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#include <linux/io.h>
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#include <linux/gpio.h>
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#include <linux/regulator/machine.h>
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#include <linux/i2c/twl.h>
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#include <linux/mmc/host.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/map.h>
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#include "mux.h"
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#include "hsmmc.h"
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#include "control.h"
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#include "common-board-devices.h"
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#include <plat/mux.h>
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#include <plat/board.h>
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#include "common.h"
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#include <plat/gpmc-smsc911x.h>
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#include <plat/gpmc.h>
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#include <plat/sdrc.h>
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#define OMAP3LOGIC_SMSC911X_CS 1
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#define OMAP3530_LV_SOM_MMC_GPIO_CD 110
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#define OMAP3530_LV_SOM_MMC_GPIO_WP 126
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#define OMAP3530_LV_SOM_SMSC911X_GPIO_IRQ 152
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#define OMAP3_TORPEDO_MMC_GPIO_CD 127
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#define OMAP3_TORPEDO_SMSC911X_GPIO_IRQ 129
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static struct regulator_consumer_supply omap3logic_vmmc1_supply[] = {
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REGULATOR_SUPPLY("vmmc", "omap_hsmmc.0"),
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};
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/* VMMC1 for MMC1 pins CMD, CLK, DAT0..DAT3 (20 mA, plus card == max 220 mA) */
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static struct regulator_init_data omap3logic_vmmc1 = {
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.constraints = {
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.name = "VMMC1",
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.min_uV = 1850000,
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.max_uV = 3150000,
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.valid_modes_mask = REGULATOR_MODE_NORMAL
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| REGULATOR_MODE_STANDBY,
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.valid_ops_mask = REGULATOR_CHANGE_VOLTAGE
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| REGULATOR_CHANGE_MODE
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| REGULATOR_CHANGE_STATUS,
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},
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.num_consumer_supplies = ARRAY_SIZE(omap3logic_vmmc1_supply),
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.consumer_supplies = omap3logic_vmmc1_supply,
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};
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static struct twl4030_gpio_platform_data omap3logic_gpio_data = {
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.gpio_base = OMAP_MAX_GPIO_LINES,
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.irq_base = TWL4030_GPIO_IRQ_BASE,
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.irq_end = TWL4030_GPIO_IRQ_END,
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.use_leds = true,
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.pullups = BIT(1),
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.pulldowns = BIT(2) | BIT(6) | BIT(7) | BIT(8)
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| BIT(13) | BIT(15) | BIT(16) | BIT(17),
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};
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static struct twl4030_platform_data omap3logic_twldata = {
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.irq_base = TWL4030_IRQ_BASE,
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.irq_end = TWL4030_IRQ_END,
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/* platform_data for children goes here */
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.gpio = &omap3logic_gpio_data,
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.vmmc1 = &omap3logic_vmmc1,
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};
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static int __init omap3logic_i2c_init(void)
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{
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omap3_pmic_init("twl4030", &omap3logic_twldata);
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return 0;
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}
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static struct omap2_hsmmc_info __initdata board_mmc_info[] = {
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{
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.name = "external",
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.mmc = 1,
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.caps = MMC_CAP_4_BIT_DATA,
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.gpio_cd = -EINVAL,
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.gpio_wp = -EINVAL,
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},
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{} /* Terminator */
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};
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static void __init board_mmc_init(void)
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{
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if (machine_is_omap3530_lv_som()) {
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/* OMAP3530 LV SOM board */
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board_mmc_info[0].gpio_cd = OMAP3530_LV_SOM_MMC_GPIO_CD;
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board_mmc_info[0].gpio_wp = OMAP3530_LV_SOM_MMC_GPIO_WP;
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omap_mux_init_signal("gpio_110", OMAP_PIN_OUTPUT);
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omap_mux_init_signal("gpio_126", OMAP_PIN_OUTPUT);
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} else if (machine_is_omap3_torpedo()) {
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/* OMAP3 Torpedo board */
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board_mmc_info[0].gpio_cd = OMAP3_TORPEDO_MMC_GPIO_CD;
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omap_mux_init_signal("gpio_127", OMAP_PIN_OUTPUT);
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} else {
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/* unsupported board */
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printk(KERN_ERR "%s(): unknown machine type\n", __func__);
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return;
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}
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omap_hsmmc_init(board_mmc_info);
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}
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static struct omap_smsc911x_platform_data __initdata board_smsc911x_data = {
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.cs = OMAP3LOGIC_SMSC911X_CS,
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.gpio_irq = -EINVAL,
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.gpio_reset = -EINVAL,
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};
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/* TODO/FIXME (comment by Peter Barada, LogicPD):
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* Fix the PBIAS voltage for Torpedo MMC1 pins that
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* are used for other needs (IRQs, etc). */
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static void omap3torpedo_fix_pbias_voltage(void)
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{
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u16 control_pbias_offset = OMAP343X_CONTROL_PBIAS_LITE;
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u32 reg;
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if (machine_is_omap3_torpedo())
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{
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/* Set the bias for the pin */
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reg = omap_ctrl_readl(control_pbias_offset);
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reg &= ~OMAP343X_PBIASLITEPWRDNZ1;
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omap_ctrl_writel(reg, control_pbias_offset);
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/* 100ms delay required for PBIAS configuration */
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msleep(100);
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reg |= OMAP343X_PBIASLITEVMODE1;
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reg |= OMAP343X_PBIASLITEPWRDNZ1;
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omap_ctrl_writel(reg | 0x300, control_pbias_offset);
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}
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}
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static inline void __init board_smsc911x_init(void)
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{
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if (machine_is_omap3530_lv_som()) {
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/* OMAP3530 LV SOM board */
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board_smsc911x_data.gpio_irq =
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OMAP3530_LV_SOM_SMSC911X_GPIO_IRQ;
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omap_mux_init_signal("gpio_152", OMAP_PIN_INPUT);
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} else if (machine_is_omap3_torpedo()) {
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/* OMAP3 Torpedo board */
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board_smsc911x_data.gpio_irq = OMAP3_TORPEDO_SMSC911X_GPIO_IRQ;
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omap_mux_init_signal("gpio_129", OMAP_PIN_INPUT);
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} else {
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/* unsupported board */
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printk(KERN_ERR "%s(): unknown machine type\n", __func__);
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return;
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}
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gpmc_smsc911x_init(&board_smsc911x_data);
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}
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#ifdef CONFIG_OMAP_MUX
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static struct omap_board_mux board_mux[] __initdata = {
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{ .reg_offset = OMAP_MUX_TERMINATOR },
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};
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#endif
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static void __init omap3logic_init(void)
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{
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omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);
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omap3torpedo_fix_pbias_voltage();
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omap3logic_i2c_init();
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omap_serial_init();
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omap_sdrc_init(NULL, NULL);
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board_mmc_init();
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board_smsc911x_init();
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/* Ensure SDRC pins are mux'd for self-refresh */
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omap_mux_init_signal("sdrc_cke0", OMAP_PIN_OUTPUT);
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omap_mux_init_signal("sdrc_cke1", OMAP_PIN_OUTPUT);
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}
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MACHINE_START(OMAP3_TORPEDO, "Logic OMAP3 Torpedo board")
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.atag_offset = 0x100,
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.map_io = omap3_map_io,
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.init_early = omap35xx_init_early,
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.init_irq = omap3_init_irq,
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.handle_irq = omap3_intc_handle_irq,
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.init_machine = omap3logic_init,
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.timer = &omap3_timer,
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.restart = omap_prcm_restart,
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MACHINE_END
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MACHINE_START(OMAP3530_LV_SOM, "OMAP Logic 3530 LV SOM board")
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.atag_offset = 0x100,
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.map_io = omap3_map_io,
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.init_early = omap35xx_init_early,
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.init_irq = omap3_init_irq,
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.handle_irq = omap3_intc_handle_irq,
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.init_machine = omap3logic_init,
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.timer = &omap3_timer,
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.restart = omap_prcm_restart,
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MACHINE_END
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