![Russell King](/assets/img/avatar_default.png)
It's useful to print the error code when a called function fails so a diagnosis of why it failed is possible. In this case, it fails because we try to register some data for the wl12xx driver, but as the driver is not configured, a stub function is used which simply returns -ENOSYS. Let's do the simple thing for -rc and print the error code. Also, the return code from platform_register_device() at each of these sites was not being checked. Add some checking, and again print the error code. This should be fixed properly for the next merge window so we don't issue error messages merely because a driver is not configured. Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
524 lines
14 KiB
C
524 lines
14 KiB
C
/*
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* Board support file for OMAP4430 based PandaBoard.
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*
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* Copyright (C) 2010 Texas Instruments
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*
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* Author: David Anders <x0132446@ti.com>
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*
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* Based on mach-omap2/board-4430sdp.c
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*
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* Author: Santosh Shilimkar <santosh.shilimkar@ti.com>
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*
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* Based on mach-omap2/board-3430sdp.c
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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/clk.h>
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#include <linux/io.h>
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#include <linux/leds.h>
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#include <linux/gpio.h>
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#include <linux/usb/otg.h>
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#include <linux/i2c/twl.h>
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#include <linux/regulator/machine.h>
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#include <linux/regulator/fixed.h>
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#include <linux/wl12xx.h>
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#include <mach/hardware.h>
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#include <asm/hardware/gic.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 <video/omapdss.h>
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#include <plat/board.h>
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#include "common.h"
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#include <plat/usb.h>
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#include <plat/mmc.h>
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#include <video/omap-panel-dvi.h>
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#include "hsmmc.h"
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#include "control.h"
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#include "mux.h"
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#include "common-board-devices.h"
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#define GPIO_HUB_POWER 1
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#define GPIO_HUB_NRESET 62
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#define GPIO_WIFI_PMENA 43
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#define GPIO_WIFI_IRQ 53
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#define HDMI_GPIO_CT_CP_HPD 60 /* HPD mode enable/disable */
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#define HDMI_GPIO_LS_OE 41 /* Level shifter for HDMI */
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#define HDMI_GPIO_HPD 63 /* Hotplug detect */
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/* wl127x BT, FM, GPS connectivity chip */
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static int wl1271_gpios[] = {46, -1, -1};
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static struct platform_device wl1271_device = {
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.name = "kim",
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.id = -1,
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.dev = {
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.platform_data = &wl1271_gpios,
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},
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};
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static struct gpio_led gpio_leds[] = {
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{
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.name = "pandaboard::status1",
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.default_trigger = "heartbeat",
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.gpio = 7,
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},
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{
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.name = "pandaboard::status2",
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.default_trigger = "mmc0",
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.gpio = 8,
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},
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};
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static struct gpio_led_platform_data gpio_led_info = {
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.leds = gpio_leds,
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.num_leds = ARRAY_SIZE(gpio_leds),
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};
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static struct platform_device leds_gpio = {
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.name = "leds-gpio",
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.id = -1,
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.dev = {
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.platform_data = &gpio_led_info,
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},
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};
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static struct platform_device *panda_devices[] __initdata = {
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&leds_gpio,
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&wl1271_device,
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};
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static const struct usbhs_omap_board_data usbhs_bdata __initconst = {
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.port_mode[0] = OMAP_EHCI_PORT_MODE_PHY,
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.port_mode[1] = OMAP_USBHS_PORT_MODE_UNUSED,
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.port_mode[2] = OMAP_USBHS_PORT_MODE_UNUSED,
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.phy_reset = false,
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.reset_gpio_port[0] = -EINVAL,
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.reset_gpio_port[1] = -EINVAL,
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.reset_gpio_port[2] = -EINVAL
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};
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static struct gpio panda_ehci_gpios[] __initdata = {
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{ GPIO_HUB_POWER, GPIOF_OUT_INIT_LOW, "hub_power" },
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{ GPIO_HUB_NRESET, GPIOF_OUT_INIT_LOW, "hub_nreset" },
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};
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static void __init omap4_ehci_init(void)
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{
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int ret;
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struct clk *phy_ref_clk;
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/* FREF_CLK3 provides the 19.2 MHz reference clock to the PHY */
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phy_ref_clk = clk_get(NULL, "auxclk3_ck");
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if (IS_ERR(phy_ref_clk)) {
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pr_err("Cannot request auxclk3\n");
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return;
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}
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clk_set_rate(phy_ref_clk, 19200000);
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clk_enable(phy_ref_clk);
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/* disable the power to the usb hub prior to init and reset phy+hub */
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ret = gpio_request_array(panda_ehci_gpios,
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ARRAY_SIZE(panda_ehci_gpios));
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if (ret) {
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pr_err("Unable to initialize EHCI power/reset\n");
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return;
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}
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gpio_export(GPIO_HUB_POWER, 0);
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gpio_export(GPIO_HUB_NRESET, 0);
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gpio_set_value(GPIO_HUB_NRESET, 1);
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usbhs_init(&usbhs_bdata);
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/* enable power to hub */
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gpio_set_value(GPIO_HUB_POWER, 1);
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}
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static struct omap_musb_board_data musb_board_data = {
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.interface_type = MUSB_INTERFACE_UTMI,
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.mode = MUSB_OTG,
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.power = 100,
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};
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static struct omap2_hsmmc_info mmc[] = {
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{
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.mmc = 1,
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.caps = MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA,
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.gpio_wp = -EINVAL,
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.gpio_cd = -EINVAL,
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},
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{
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.name = "wl1271",
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.mmc = 5,
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.caps = MMC_CAP_4_BIT_DATA | MMC_CAP_POWER_OFF_CARD,
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.gpio_wp = -EINVAL,
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.gpio_cd = -EINVAL,
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.ocr_mask = MMC_VDD_165_195,
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.nonremovable = true,
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},
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{} /* Terminator */
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};
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static struct regulator_consumer_supply omap4_panda_vmmc5_supply[] = {
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REGULATOR_SUPPLY("vmmc", "omap_hsmmc.4"),
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};
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static struct regulator_init_data panda_vmmc5 = {
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.constraints = {
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.valid_ops_mask = REGULATOR_CHANGE_STATUS,
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},
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.num_consumer_supplies = ARRAY_SIZE(omap4_panda_vmmc5_supply),
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.consumer_supplies = omap4_panda_vmmc5_supply,
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};
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static struct fixed_voltage_config panda_vwlan = {
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.supply_name = "vwl1271",
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.microvolts = 1800000, /* 1.8V */
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.gpio = GPIO_WIFI_PMENA,
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.startup_delay = 70000, /* 70msec */
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.enable_high = 1,
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.enabled_at_boot = 0,
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.init_data = &panda_vmmc5,
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};
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static struct platform_device omap_vwlan_device = {
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.name = "reg-fixed-voltage",
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.id = 1,
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.dev = {
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.platform_data = &panda_vwlan,
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},
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};
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struct wl12xx_platform_data omap_panda_wlan_data __initdata = {
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.irq = OMAP_GPIO_IRQ(GPIO_WIFI_IRQ),
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/* PANDA ref clock is 38.4 MHz */
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.board_ref_clock = 2,
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};
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static int omap4_twl6030_hsmmc_late_init(struct device *dev)
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{
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int ret = 0;
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struct platform_device *pdev = container_of(dev,
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struct platform_device, dev);
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struct omap_mmc_platform_data *pdata = dev->platform_data;
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if (!pdata) {
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dev_err(dev, "%s: NULL platform data\n", __func__);
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return -EINVAL;
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}
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/* Setting MMC1 Card detect Irq */
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if (pdev->id == 0) {
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ret = twl6030_mmc_card_detect_config();
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if (ret)
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dev_err(dev, "%s: Error card detect config(%d)\n",
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__func__, ret);
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else
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pdata->slots[0].card_detect = twl6030_mmc_card_detect;
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}
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return ret;
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}
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static __init void omap4_twl6030_hsmmc_set_late_init(struct device *dev)
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{
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struct omap_mmc_platform_data *pdata;
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/* dev can be null if CONFIG_MMC_OMAP_HS is not set */
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if (!dev) {
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pr_err("Failed omap4_twl6030_hsmmc_set_late_init\n");
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return;
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}
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pdata = dev->platform_data;
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pdata->init = omap4_twl6030_hsmmc_late_init;
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}
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static int __init omap4_twl6030_hsmmc_init(struct omap2_hsmmc_info *controllers)
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{
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struct omap2_hsmmc_info *c;
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omap2_hsmmc_init(controllers);
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for (c = controllers; c->mmc; c++)
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omap4_twl6030_hsmmc_set_late_init(c->dev);
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return 0;
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}
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/* Panda board uses the common PMIC configuration */
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static struct twl4030_platform_data omap4_panda_twldata;
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/*
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* Display monitor features are burnt in their EEPROM as EDID data. The EEPROM
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* is connected as I2C slave device, and can be accessed at address 0x50
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*/
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static struct i2c_board_info __initdata panda_i2c_eeprom[] = {
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{
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I2C_BOARD_INFO("eeprom", 0x50),
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},
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};
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static int __init omap4_panda_i2c_init(void)
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{
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omap4_pmic_get_config(&omap4_panda_twldata, TWL_COMMON_PDATA_USB,
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TWL_COMMON_REGULATOR_VDAC |
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TWL_COMMON_REGULATOR_VAUX2 |
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TWL_COMMON_REGULATOR_VAUX3 |
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TWL_COMMON_REGULATOR_VMMC |
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TWL_COMMON_REGULATOR_VPP |
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TWL_COMMON_REGULATOR_VANA |
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TWL_COMMON_REGULATOR_VCXIO |
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TWL_COMMON_REGULATOR_VUSB |
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TWL_COMMON_REGULATOR_CLK32KG);
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omap4_pmic_init("twl6030", &omap4_panda_twldata);
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omap_register_i2c_bus(2, 400, NULL, 0);
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/*
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* Bus 3 is attached to the DVI port where devices like the pico DLP
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* projector don't work reliably with 400kHz
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*/
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omap_register_i2c_bus(3, 100, panda_i2c_eeprom,
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ARRAY_SIZE(panda_i2c_eeprom));
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omap_register_i2c_bus(4, 400, NULL, 0);
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return 0;
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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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/* WLAN IRQ - GPIO 53 */
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OMAP4_MUX(GPMC_NCS3, OMAP_MUX_MODE3 | OMAP_PIN_INPUT),
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/* WLAN POWER ENABLE - GPIO 43 */
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OMAP4_MUX(GPMC_A19, OMAP_MUX_MODE3 | OMAP_PIN_OUTPUT),
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/* WLAN SDIO: MMC5 CMD */
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OMAP4_MUX(SDMMC5_CMD, OMAP_MUX_MODE0 | OMAP_PIN_INPUT_PULLUP),
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/* WLAN SDIO: MMC5 CLK */
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OMAP4_MUX(SDMMC5_CLK, OMAP_MUX_MODE0 | OMAP_PIN_INPUT_PULLUP),
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/* WLAN SDIO: MMC5 DAT[0-3] */
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OMAP4_MUX(SDMMC5_DAT0, OMAP_MUX_MODE0 | OMAP_PIN_INPUT_PULLUP),
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OMAP4_MUX(SDMMC5_DAT1, OMAP_MUX_MODE0 | OMAP_PIN_INPUT_PULLUP),
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OMAP4_MUX(SDMMC5_DAT2, OMAP_MUX_MODE0 | OMAP_PIN_INPUT_PULLUP),
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OMAP4_MUX(SDMMC5_DAT3, OMAP_MUX_MODE0 | OMAP_PIN_INPUT_PULLUP),
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/* gpio 0 - TFP410 PD */
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OMAP4_MUX(KPD_COL1, OMAP_PIN_OUTPUT | OMAP_MUX_MODE3),
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/* dispc2_data23 */
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OMAP4_MUX(USBB2_ULPITLL_STP, OMAP_PIN_OUTPUT | OMAP_MUX_MODE5),
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/* dispc2_data22 */
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OMAP4_MUX(USBB2_ULPITLL_DIR, OMAP_PIN_OUTPUT | OMAP_MUX_MODE5),
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/* dispc2_data21 */
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OMAP4_MUX(USBB2_ULPITLL_NXT, OMAP_PIN_OUTPUT | OMAP_MUX_MODE5),
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/* dispc2_data20 */
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OMAP4_MUX(USBB2_ULPITLL_DAT0, OMAP_PIN_OUTPUT | OMAP_MUX_MODE5),
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/* dispc2_data19 */
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OMAP4_MUX(USBB2_ULPITLL_DAT1, OMAP_PIN_OUTPUT | OMAP_MUX_MODE5),
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/* dispc2_data18 */
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OMAP4_MUX(USBB2_ULPITLL_DAT2, OMAP_PIN_OUTPUT | OMAP_MUX_MODE5),
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/* dispc2_data15 */
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OMAP4_MUX(USBB2_ULPITLL_DAT3, OMAP_PIN_OUTPUT | OMAP_MUX_MODE5),
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/* dispc2_data14 */
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OMAP4_MUX(USBB2_ULPITLL_DAT4, OMAP_PIN_OUTPUT | OMAP_MUX_MODE5),
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/* dispc2_data13 */
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OMAP4_MUX(USBB2_ULPITLL_DAT5, OMAP_PIN_OUTPUT | OMAP_MUX_MODE5),
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/* dispc2_data12 */
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OMAP4_MUX(USBB2_ULPITLL_DAT6, OMAP_PIN_OUTPUT | OMAP_MUX_MODE5),
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/* dispc2_data11 */
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OMAP4_MUX(USBB2_ULPITLL_DAT7, OMAP_PIN_OUTPUT | OMAP_MUX_MODE5),
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/* dispc2_data10 */
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OMAP4_MUX(DPM_EMU3, OMAP_PIN_OUTPUT | OMAP_MUX_MODE5),
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/* dispc2_data9 */
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OMAP4_MUX(DPM_EMU4, OMAP_PIN_OUTPUT | OMAP_MUX_MODE5),
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/* dispc2_data16 */
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OMAP4_MUX(DPM_EMU5, OMAP_PIN_OUTPUT | OMAP_MUX_MODE5),
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/* dispc2_data17 */
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OMAP4_MUX(DPM_EMU6, OMAP_PIN_OUTPUT | OMAP_MUX_MODE5),
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/* dispc2_hsync */
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OMAP4_MUX(DPM_EMU7, OMAP_PIN_OUTPUT | OMAP_MUX_MODE5),
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/* dispc2_pclk */
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OMAP4_MUX(DPM_EMU8, OMAP_PIN_OUTPUT | OMAP_MUX_MODE5),
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/* dispc2_vsync */
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OMAP4_MUX(DPM_EMU9, OMAP_PIN_OUTPUT | OMAP_MUX_MODE5),
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/* dispc2_de */
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OMAP4_MUX(DPM_EMU10, OMAP_PIN_OUTPUT | OMAP_MUX_MODE5),
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/* dispc2_data8 */
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OMAP4_MUX(DPM_EMU11, OMAP_PIN_OUTPUT | OMAP_MUX_MODE5),
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/* dispc2_data7 */
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OMAP4_MUX(DPM_EMU12, OMAP_PIN_OUTPUT | OMAP_MUX_MODE5),
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/* dispc2_data6 */
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OMAP4_MUX(DPM_EMU13, OMAP_PIN_OUTPUT | OMAP_MUX_MODE5),
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/* dispc2_data5 */
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OMAP4_MUX(DPM_EMU14, OMAP_PIN_OUTPUT | OMAP_MUX_MODE5),
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/* dispc2_data4 */
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OMAP4_MUX(DPM_EMU15, OMAP_PIN_OUTPUT | OMAP_MUX_MODE5),
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/* dispc2_data3 */
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OMAP4_MUX(DPM_EMU16, OMAP_PIN_OUTPUT | OMAP_MUX_MODE5),
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/* dispc2_data2 */
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OMAP4_MUX(DPM_EMU17, OMAP_PIN_OUTPUT | OMAP_MUX_MODE5),
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/* dispc2_data1 */
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OMAP4_MUX(DPM_EMU18, OMAP_PIN_OUTPUT | OMAP_MUX_MODE5),
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/* dispc2_data0 */
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OMAP4_MUX(DPM_EMU19, OMAP_PIN_OUTPUT | OMAP_MUX_MODE5),
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{ .reg_offset = OMAP_MUX_TERMINATOR },
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};
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#else
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#define board_mux NULL
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#endif
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/* Display DVI */
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#define PANDA_DVI_TFP410_POWER_DOWN_GPIO 0
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static int omap4_panda_enable_dvi(struct omap_dss_device *dssdev)
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{
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gpio_set_value(dssdev->reset_gpio, 1);
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return 0;
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}
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static void omap4_panda_disable_dvi(struct omap_dss_device *dssdev)
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{
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gpio_set_value(dssdev->reset_gpio, 0);
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}
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/* Using generic display panel */
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static struct panel_dvi_platform_data omap4_dvi_panel = {
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.platform_enable = omap4_panda_enable_dvi,
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.platform_disable = omap4_panda_disable_dvi,
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.i2c_bus_num = 3,
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};
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struct omap_dss_device omap4_panda_dvi_device = {
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.type = OMAP_DISPLAY_TYPE_DPI,
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.name = "dvi",
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.driver_name = "dvi",
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.data = &omap4_dvi_panel,
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.phy.dpi.data_lines = 24,
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.reset_gpio = PANDA_DVI_TFP410_POWER_DOWN_GPIO,
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.channel = OMAP_DSS_CHANNEL_LCD2,
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};
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int __init omap4_panda_dvi_init(void)
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{
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int r;
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/* Requesting TFP410 DVI GPIO and disabling it, at bootup */
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r = gpio_request_one(omap4_panda_dvi_device.reset_gpio,
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GPIOF_OUT_INIT_LOW, "DVI PD");
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if (r)
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pr_err("Failed to get DVI powerdown GPIO\n");
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return r;
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}
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static struct gpio panda_hdmi_gpios[] = {
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{ HDMI_GPIO_CT_CP_HPD, GPIOF_OUT_INIT_HIGH, "hdmi_gpio_ct_cp_hpd" },
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{ HDMI_GPIO_LS_OE, GPIOF_OUT_INIT_HIGH, "hdmi_gpio_ls_oe" },
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{ HDMI_GPIO_HPD, GPIOF_DIR_IN, "hdmi_gpio_hpd" },
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};
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static int omap4_panda_panel_enable_hdmi(struct omap_dss_device *dssdev)
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|
{
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int status;
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|
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status = gpio_request_array(panda_hdmi_gpios,
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ARRAY_SIZE(panda_hdmi_gpios));
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if (status)
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pr_err("Cannot request HDMI GPIOs\n");
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|
|
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return status;
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}
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|
|
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static void omap4_panda_panel_disable_hdmi(struct omap_dss_device *dssdev)
|
|
{
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|
gpio_free_array(panda_hdmi_gpios, ARRAY_SIZE(panda_hdmi_gpios));
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}
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|
|
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static struct omap_dss_hdmi_data omap4_panda_hdmi_data = {
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.hpd_gpio = HDMI_GPIO_HPD,
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|
};
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|
|
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static struct omap_dss_device omap4_panda_hdmi_device = {
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.name = "hdmi",
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|
.driver_name = "hdmi_panel",
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.type = OMAP_DISPLAY_TYPE_HDMI,
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.platform_enable = omap4_panda_panel_enable_hdmi,
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.platform_disable = omap4_panda_panel_disable_hdmi,
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.channel = OMAP_DSS_CHANNEL_DIGIT,
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|
.data = &omap4_panda_hdmi_data,
|
|
};
|
|
|
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static struct omap_dss_device *omap4_panda_dss_devices[] = {
|
|
&omap4_panda_dvi_device,
|
|
&omap4_panda_hdmi_device,
|
|
};
|
|
|
|
static struct omap_dss_board_info omap4_panda_dss_data = {
|
|
.num_devices = ARRAY_SIZE(omap4_panda_dss_devices),
|
|
.devices = omap4_panda_dss_devices,
|
|
.default_device = &omap4_panda_dvi_device,
|
|
};
|
|
|
|
void omap4_panda_display_init(void)
|
|
{
|
|
int r;
|
|
|
|
r = omap4_panda_dvi_init();
|
|
if (r)
|
|
pr_err("error initializing panda DVI\n");
|
|
|
|
omap_display_init(&omap4_panda_dss_data);
|
|
|
|
/*
|
|
* OMAP4460SDP/Blaze and OMAP4430 ES2.3 SDP/Blaze boards and
|
|
* later have external pull up on the HDMI I2C lines
|
|
*/
|
|
if (cpu_is_omap446x() || omap_rev() > OMAP4430_REV_ES2_2)
|
|
omap_hdmi_init(OMAP_HDMI_SDA_SCL_EXTERNAL_PULLUP);
|
|
else
|
|
omap_hdmi_init(0);
|
|
|
|
omap_mux_init_gpio(HDMI_GPIO_LS_OE, OMAP_PIN_OUTPUT);
|
|
omap_mux_init_gpio(HDMI_GPIO_CT_CP_HPD, OMAP_PIN_OUTPUT);
|
|
omap_mux_init_gpio(HDMI_GPIO_HPD, OMAP_PIN_INPUT_PULLDOWN);
|
|
}
|
|
|
|
static void __init omap4_panda_init(void)
|
|
{
|
|
int package = OMAP_PACKAGE_CBS;
|
|
int ret;
|
|
|
|
if (omap_rev() == OMAP4430_REV_ES1_0)
|
|
package = OMAP_PACKAGE_CBL;
|
|
omap4_mux_init(board_mux, NULL, package);
|
|
|
|
ret = wl12xx_set_platform_data(&omap_panda_wlan_data);
|
|
if (ret)
|
|
pr_err("error setting wl12xx data: %d\n", ret);
|
|
|
|
omap4_panda_i2c_init();
|
|
platform_add_devices(panda_devices, ARRAY_SIZE(panda_devices));
|
|
platform_device_register(&omap_vwlan_device);
|
|
omap_serial_init();
|
|
omap_sdrc_init(NULL, NULL);
|
|
omap4_twl6030_hsmmc_init(mmc);
|
|
omap4_ehci_init();
|
|
usb_musb_init(&musb_board_data);
|
|
omap4_panda_display_init();
|
|
}
|
|
|
|
MACHINE_START(OMAP4_PANDA, "OMAP4 Panda board")
|
|
/* Maintainer: David Anders - Texas Instruments Inc */
|
|
.atag_offset = 0x100,
|
|
.reserve = omap_reserve,
|
|
.map_io = omap4_map_io,
|
|
.init_early = omap4430_init_early,
|
|
.init_irq = gic_init_irq,
|
|
.handle_irq = gic_handle_irq,
|
|
.init_machine = omap4_panda_init,
|
|
.timer = &omap4_timer,
|
|
.restart = omap_prcm_restart,
|
|
MACHINE_END
|