forked from Minki/linux
a0f203d384
wm8903_platform_data.gpio_cfg[] was intended to be interpreted as follows:
0: Don't touch this GPIO's configuration register
1..7fff: Write that value to the GPIO's configuration register
8000: Write zero to the GPIO's configuration register
other: Undefined (invalid)
The rationale is that platform data is usually global data, and a value of
zero means that the field wasn't explicitly set to anything (e.g. because
the field was new to the pdata type, and existing users weren't update to
initialize it) and hence the value zero should be ignored. 0x8000 is an
explicit way to get 0 in the register.
The code worked this way until commit 7cfe561 "ASoC: wm8903: Expose GPIOs
through gpiolib", where the behaviour was changed due to my lack of
awareness of the above rationale.
This patch reverts to the intended behaviour, and updates all in-tree users
to use the correct scheme. This also makes WM8903 consistent with other
devices that use a similar scheme.
WM8903_GPIO_NO_CONFIG is also renamed to WM8903_GPIO_CONFIG_ZERO so that
its name accurately reflects its purpose.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Cc: Olof Johansson <olof@lixom.net>
Cc: Colin Cross <ccross@android.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
308 lines
7.5 KiB
C
308 lines
7.5 KiB
C
/*
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* Copyright (c) 2010, 2011 NVIDIA Corporation.
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* Copyright (C) 2010, 2011 Google, Inc.
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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, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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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/serial_8250.h>
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#include <linux/i2c.h>
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#include <linux/delay.h>
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#include <linux/input.h>
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#include <linux/io.h>
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#include <linux/gpio.h>
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#include <linux/gpio_keys.h>
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#include <sound/wm8903.h>
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#include <mach/iomap.h>
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#include <mach/irqs.h>
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#include <mach/sdhci.h>
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#include <mach/tegra_wm8903_pdata.h>
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#include <asm/mach-types.h>
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#include <asm/mach/arch.h>
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#include "board.h"
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#include "board-seaboard.h"
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#include "clock.h"
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#include "devices.h"
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#include "gpio-names.h"
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static struct plat_serial8250_port debug_uart_platform_data[] = {
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{
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/* Memory and IRQ filled in before registration */
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.flags = UPF_BOOT_AUTOCONF | UPF_FIXED_TYPE,
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.type = PORT_TEGRA,
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.iotype = UPIO_MEM,
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.regshift = 2,
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.uartclk = 216000000,
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}, {
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.flags = 0,
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}
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};
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static struct platform_device debug_uart = {
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.name = "serial8250",
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.id = PLAT8250_DEV_PLATFORM,
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.dev = {
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.platform_data = debug_uart_platform_data,
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},
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};
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static __initdata struct tegra_clk_init_table seaboard_clk_init_table[] = {
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/* name parent rate enabled */
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{ "uartb", "pll_p", 216000000, true},
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{ "uartd", "pll_p", 216000000, true},
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{ "pll_a", "pll_p_out1", 56448000, true },
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{ "pll_a_out0", "pll_a", 11289600, true },
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{ "cdev1", NULL, 0, true },
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{ "i2s1", "pll_a_out0", 11289600, false},
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{ "usbd", "clk_m", 12000000, true},
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{ "usb3", "clk_m", 12000000, true},
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{ NULL, NULL, 0, 0},
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};
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static struct gpio_keys_button seaboard_gpio_keys_buttons[] = {
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{
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.code = SW_LID,
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.gpio = TEGRA_GPIO_LIDSWITCH,
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.active_low = 0,
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.desc = "Lid",
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.type = EV_SW,
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.wakeup = 1,
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.debounce_interval = 1,
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},
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{
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.code = KEY_POWER,
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.gpio = TEGRA_GPIO_POWERKEY,
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.active_low = 1,
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.desc = "Power",
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.type = EV_KEY,
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.wakeup = 1,
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},
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};
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static struct gpio_keys_platform_data seaboard_gpio_keys = {
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.buttons = seaboard_gpio_keys_buttons,
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.nbuttons = ARRAY_SIZE(seaboard_gpio_keys_buttons),
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};
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static struct platform_device seaboard_gpio_keys_device = {
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.name = "gpio-keys",
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.id = -1,
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.dev = {
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.platform_data = &seaboard_gpio_keys,
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}
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};
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static struct tegra_sdhci_platform_data sdhci_pdata1 = {
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.cd_gpio = -1,
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.wp_gpio = -1,
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.power_gpio = -1,
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};
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static struct tegra_sdhci_platform_data sdhci_pdata3 = {
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.cd_gpio = TEGRA_GPIO_SD2_CD,
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.wp_gpio = TEGRA_GPIO_SD2_WP,
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.power_gpio = TEGRA_GPIO_SD2_POWER,
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};
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static struct tegra_sdhci_platform_data sdhci_pdata4 = {
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.cd_gpio = -1,
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.wp_gpio = -1,
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.power_gpio = -1,
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.is_8bit = 1,
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};
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static struct tegra_wm8903_platform_data seaboard_audio_pdata = {
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.gpio_spkr_en = TEGRA_GPIO_SPKR_EN,
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.gpio_hp_det = TEGRA_GPIO_HP_DET,
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.gpio_hp_mute = -1,
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.gpio_int_mic_en = -1,
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.gpio_ext_mic_en = -1,
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};
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static struct platform_device seaboard_audio_device = {
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.name = "tegra-snd-wm8903",
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.id = 0,
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.dev = {
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.platform_data = &seaboard_audio_pdata,
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},
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};
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static struct platform_device *seaboard_devices[] __initdata = {
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&debug_uart,
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&tegra_pmu_device,
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&tegra_sdhci_device4,
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&tegra_sdhci_device3,
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&tegra_sdhci_device1,
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&seaboard_gpio_keys_device,
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&tegra_i2s_device1,
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&tegra_das_device,
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&tegra_pcm_device,
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&seaboard_audio_device,
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};
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static struct i2c_board_info __initdata isl29018_device = {
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I2C_BOARD_INFO("isl29018", 0x44),
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.irq = TEGRA_GPIO_TO_IRQ(TEGRA_GPIO_ISL29018_IRQ),
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};
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static struct i2c_board_info __initdata adt7461_device = {
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I2C_BOARD_INFO("adt7461", 0x4c),
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};
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static struct wm8903_platform_data wm8903_pdata = {
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.irq_active_low = 0,
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.micdet_cfg = 0,
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.micdet_delay = 100,
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.gpio_base = SEABOARD_GPIO_WM8903(0),
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.gpio_cfg = {
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0,
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0,
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WM8903_GPIO_CONFIG_ZERO,
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0,
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0,
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},
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};
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static struct i2c_board_info __initdata wm8903_device = {
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I2C_BOARD_INFO("wm8903", 0x1a),
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.platform_data = &wm8903_pdata,
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.irq = TEGRA_GPIO_TO_IRQ(TEGRA_GPIO_CDC_IRQ),
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};
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static int seaboard_ehci_init(void)
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{
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int gpio_status;
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gpio_status = gpio_request(TEGRA_GPIO_USB1, "VBUS_USB1");
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if (gpio_status < 0) {
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pr_err("VBUS_USB1 request GPIO FAILED\n");
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WARN_ON(1);
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}
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gpio_status = gpio_direction_output(TEGRA_GPIO_USB1, 1);
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if (gpio_status < 0) {
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pr_err("VBUS_USB1 request GPIO DIRECTION FAILED\n");
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WARN_ON(1);
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}
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gpio_set_value(TEGRA_GPIO_USB1, 1);
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platform_device_register(&tegra_ehci1_device);
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platform_device_register(&tegra_ehci3_device);
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return 0;
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}
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static void __init seaboard_i2c_init(void)
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{
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gpio_request(TEGRA_GPIO_ISL29018_IRQ, "isl29018");
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gpio_direction_input(TEGRA_GPIO_ISL29018_IRQ);
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i2c_register_board_info(0, &isl29018_device, 1);
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i2c_register_board_info(0, &wm8903_device, 1);
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i2c_register_board_info(3, &adt7461_device, 1);
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platform_device_register(&tegra_i2c_device1);
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platform_device_register(&tegra_i2c_device2);
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platform_device_register(&tegra_i2c_device3);
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platform_device_register(&tegra_i2c_device4);
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}
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static void __init seaboard_common_init(void)
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{
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seaboard_pinmux_init();
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tegra_clk_init_from_table(seaboard_clk_init_table);
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tegra_sdhci_device1.dev.platform_data = &sdhci_pdata1;
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tegra_sdhci_device3.dev.platform_data = &sdhci_pdata3;
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tegra_sdhci_device4.dev.platform_data = &sdhci_pdata4;
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platform_add_devices(seaboard_devices, ARRAY_SIZE(seaboard_devices));
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seaboard_ehci_init();
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}
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static void __init tegra_seaboard_init(void)
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{
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/* Seaboard uses UARTD for the debug port. */
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debug_uart_platform_data[0].membase = IO_ADDRESS(TEGRA_UARTD_BASE);
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debug_uart_platform_data[0].mapbase = TEGRA_UARTD_BASE;
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debug_uart_platform_data[0].irq = INT_UARTD;
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seaboard_common_init();
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seaboard_i2c_init();
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}
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static void __init tegra_kaen_init(void)
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{
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/* Kaen uses UARTB for the debug port. */
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debug_uart_platform_data[0].membase = IO_ADDRESS(TEGRA_UARTB_BASE);
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debug_uart_platform_data[0].mapbase = TEGRA_UARTB_BASE;
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debug_uart_platform_data[0].irq = INT_UARTB;
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seaboard_audio_pdata.gpio_hp_mute = TEGRA_GPIO_KAEN_HP_MUTE;
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tegra_gpio_enable(TEGRA_GPIO_KAEN_HP_MUTE);
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seaboard_common_init();
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seaboard_i2c_init();
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}
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static void __init tegra_wario_init(void)
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{
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/* Wario uses UARTB for the debug port. */
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debug_uart_platform_data[0].membase = IO_ADDRESS(TEGRA_UARTB_BASE);
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debug_uart_platform_data[0].mapbase = TEGRA_UARTB_BASE;
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debug_uart_platform_data[0].irq = INT_UARTB;
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seaboard_common_init();
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seaboard_i2c_init();
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}
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MACHINE_START(SEABOARD, "seaboard")
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.atag_offset = 0x100,
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.map_io = tegra_map_common_io,
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.init_early = tegra_init_early,
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.init_irq = tegra_init_irq,
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.timer = &tegra_timer,
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.init_machine = tegra_seaboard_init,
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MACHINE_END
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MACHINE_START(KAEN, "kaen")
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.atag_offset = 0x100,
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.map_io = tegra_map_common_io,
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.init_early = tegra_init_early,
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.init_irq = tegra_init_irq,
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.timer = &tegra_timer,
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.init_machine = tegra_kaen_init,
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MACHINE_END
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MACHINE_START(WARIO, "wario")
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.atag_offset = 0x100,
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.map_io = tegra_map_common_io,
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.init_early = tegra_init_early,
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.init_irq = tegra_init_irq,
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.timer = &tegra_timer,
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.init_machine = tegra_wario_init,
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MACHINE_END
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