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linux-kernel-test/arch/arm/mach-omap2/board-overo.c
Tony Lindgren 3b972bf06c ARM: OMAP2+: Split omap2_hsmmc_init() to properly support I2C GPIO pins 
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>
2012-02-20 10:00:39 -08:00

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/*
* board-overo.c (Gumstix Overo)
*
* Initial code: Steve Sakoman <steve@sakoman.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* version 2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA
*
*/
#include <linux/clk.h>
#include <linux/delay.h>
#include <linux/err.h>
#include <linux/init.h>
#include <linux/io.h>
#include <linux/gpio.h>
#include <linux/kernel.h>
#include <linux/platform_device.h>
#include <linux/i2c/twl.h>
#include <linux/regulator/machine.h>
#include <linux/regulator/fixed.h>
#include <linux/spi/spi.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/nand.h>
#include <linux/mtd/partitions.h>
#include <linux/mmc/host.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/flash.h>
#include <asm/mach/map.h>
#include <plat/board.h>
#include "common.h"
#include <video/omapdss.h>
#include <video/omap-panel-generic-dpi.h>
#include <video/omap-panel-dvi.h>
#include <plat/gpmc.h>
#include <mach/hardware.h>
#include <plat/nand.h>
#include <plat/mcspi.h>
#include <plat/mux.h>
#include <plat/usb.h>
#include "mux.h"
#include "sdram-micron-mt46h32m32lf-6.h"
#include "hsmmc.h"
#include "common-board-devices.h"
#define OVERO_GPIO_BT_XGATE 15
#define OVERO_GPIO_W2W_NRESET 16
#define OVERO_GPIO_PENDOWN 114
#define OVERO_GPIO_BT_NRESET 164
#define OVERO_GPIO_USBH_CPEN 168
#define OVERO_GPIO_USBH_NRESET 183
#define OVERO_SMSC911X_CS 5
#define OVERO_SMSC911X_GPIO 176
#define OVERO_SMSC911X2_CS 4
#define OVERO_SMSC911X2_GPIO 65
#if defined(CONFIG_TOUCHSCREEN_ADS7846) || \
defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE)
/* fixed regulator for ads7846 */
static struct regulator_consumer_supply ads7846_supply[] = {
REGULATOR_SUPPLY("vcc", "spi1.0"),
};
static struct regulator_init_data vads7846_regulator = {
.constraints = {
.valid_ops_mask = REGULATOR_CHANGE_STATUS,
},
.num_consumer_supplies = ARRAY_SIZE(ads7846_supply),
.consumer_supplies = ads7846_supply,
};
static struct fixed_voltage_config vads7846 = {
.supply_name = "vads7846",
.microvolts = 3300000, /* 3.3V */
.gpio = -EINVAL,
.startup_delay = 0,
.init_data = &vads7846_regulator,
};
static struct platform_device vads7846_device = {
.name = "reg-fixed-voltage",
.id = 1,
.dev = {
.platform_data = &vads7846,
},
};
static void __init overo_ads7846_init(void)
{
omap_ads7846_init(1, OVERO_GPIO_PENDOWN, 0, NULL);
platform_device_register(&vads7846_device);
}
#else
static inline void __init overo_ads7846_init(void) { return; }
#endif
#if defined(CONFIG_SMSC911X) || defined(CONFIG_SMSC911X_MODULE)
#include <linux/smsc911x.h>
#include <plat/gpmc-smsc911x.h>
static struct omap_smsc911x_platform_data smsc911x_cfg = {
.id = 0,
.cs = OVERO_SMSC911X_CS,
.gpio_irq = OVERO_SMSC911X_GPIO,
.gpio_reset = -EINVAL,
.flags = SMSC911X_USE_32BIT,
};
static struct omap_smsc911x_platform_data smsc911x2_cfg = {
.id = 1,
.cs = OVERO_SMSC911X2_CS,
.gpio_irq = OVERO_SMSC911X2_GPIO,
.gpio_reset = -EINVAL,
.flags = SMSC911X_USE_32BIT,
};
static void __init overo_init_smsc911x(void)
{
gpmc_smsc911x_init(&smsc911x_cfg);
gpmc_smsc911x_init(&smsc911x2_cfg);
}
#else
static inline void __init overo_init_smsc911x(void) { return; }
#endif
/* DSS */
static int lcd_enabled;
static int dvi_enabled;
#define OVERO_GPIO_LCD_EN 144
#define OVERO_GPIO_LCD_BL 145
static struct gpio overo_dss_gpios[] __initdata = {
{ OVERO_GPIO_LCD_EN, GPIOF_OUT_INIT_HIGH, "OVERO_GPIO_LCD_EN" },
{ OVERO_GPIO_LCD_BL, GPIOF_OUT_INIT_HIGH, "OVERO_GPIO_LCD_BL" },
};
static void __init overo_display_init(void)
{
if (gpio_request_array(overo_dss_gpios, ARRAY_SIZE(overo_dss_gpios))) {
printk(KERN_ERR "could not obtain DSS control GPIOs\n");
return;
}
gpio_export(OVERO_GPIO_LCD_EN, 0);
gpio_export(OVERO_GPIO_LCD_BL, 0);
}
static int overo_panel_enable_dvi(struct omap_dss_device *dssdev)
{
if (lcd_enabled) {
printk(KERN_ERR "cannot enable DVI, LCD is enabled\n");
return -EINVAL;
}
dvi_enabled = 1;
return 0;
}
static void overo_panel_disable_dvi(struct omap_dss_device *dssdev)
{
dvi_enabled = 0;
}
static struct panel_dvi_platform_data dvi_panel = {
.platform_enable = overo_panel_enable_dvi,
.platform_disable = overo_panel_disable_dvi,
.i2c_bus_num = 3,
};
static struct omap_dss_device overo_dvi_device = {
.name = "dvi",
.type = OMAP_DISPLAY_TYPE_DPI,
.driver_name = "dvi",
.data = &dvi_panel,
.phy.dpi.data_lines = 24,
};
static struct omap_dss_device overo_tv_device = {
.name = "tv",
.driver_name = "venc",
.type = OMAP_DISPLAY_TYPE_VENC,
.phy.venc.type = OMAP_DSS_VENC_TYPE_SVIDEO,
};
static int overo_panel_enable_lcd(struct omap_dss_device *dssdev)
{
if (dvi_enabled) {
printk(KERN_ERR "cannot enable LCD, DVI is enabled\n");
return -EINVAL;
}
gpio_set_value(OVERO_GPIO_LCD_EN, 1);
gpio_set_value(OVERO_GPIO_LCD_BL, 1);
lcd_enabled = 1;
return 0;
}
static void overo_panel_disable_lcd(struct omap_dss_device *dssdev)
{
gpio_set_value(OVERO_GPIO_LCD_EN, 0);
gpio_set_value(OVERO_GPIO_LCD_BL, 0);
lcd_enabled = 0;
}
static struct panel_generic_dpi_data lcd43_panel = {
.name = "samsung_lte430wq_f0c",
.platform_enable = overo_panel_enable_lcd,
.platform_disable = overo_panel_disable_lcd,
};
static struct omap_dss_device overo_lcd43_device = {
.name = "lcd43",
.type = OMAP_DISPLAY_TYPE_DPI,
.driver_name = "generic_dpi_panel",
.data = &lcd43_panel,
.phy.dpi.data_lines = 24,
};
#if defined(CONFIG_PANEL_LGPHILIPS_LB035Q02) || \
defined(CONFIG_PANEL_LGPHILIPS_LB035Q02_MODULE)
static struct omap_dss_device overo_lcd35_device = {
.type = OMAP_DISPLAY_TYPE_DPI,
.name = "lcd35",
.driver_name = "lgphilips_lb035q02_panel",
.phy.dpi.data_lines = 24,
.platform_enable = overo_panel_enable_lcd,
.platform_disable = overo_panel_disable_lcd,
};
#endif
static struct omap_dss_device *overo_dss_devices[] = {
&overo_dvi_device,
&overo_tv_device,
#if defined(CONFIG_PANEL_LGPHILIPS_LB035Q02) || \
defined(CONFIG_PANEL_LGPHILIPS_LB035Q02_MODULE)
&overo_lcd35_device,
#endif
&overo_lcd43_device,
};
static struct omap_dss_board_info overo_dss_data = {
.num_devices = ARRAY_SIZE(overo_dss_devices),
.devices = overo_dss_devices,
.default_device = &overo_dvi_device,
};
static struct mtd_partition overo_nand_partitions[] = {
{
.name = "xloader",
.offset = 0, /* Offset = 0x00000 */
.size = 4 * NAND_BLOCK_SIZE,
.mask_flags = MTD_WRITEABLE
},
{
.name = "uboot",
.offset = MTDPART_OFS_APPEND, /* Offset = 0x80000 */
.size = 14 * NAND_BLOCK_SIZE,
},
{
.name = "uboot environment",
.offset = MTDPART_OFS_APPEND, /* Offset = 0x240000 */
.size = 2 * NAND_BLOCK_SIZE,
},
{
.name = "linux",
.offset = MTDPART_OFS_APPEND, /* Offset = 0x280000 */
.size = 32 * NAND_BLOCK_SIZE,
},
{
.name = "rootfs",
.offset = MTDPART_OFS_APPEND, /* Offset = 0x680000 */
.size = MTDPART_SIZ_FULL,
},
};
static struct omap2_hsmmc_info mmc[] = {
{
.mmc = 1,
.caps = MMC_CAP_4_BIT_DATA,
.gpio_cd = -EINVAL,
.gpio_wp = -EINVAL,
},
{
.mmc = 2,
.caps = MMC_CAP_4_BIT_DATA,
.gpio_cd = -EINVAL,
.gpio_wp = -EINVAL,
.transceiver = true,
.ocr_mask = 0x00100000, /* 3.3V */
},
{} /* Terminator */
};
static struct regulator_consumer_supply overo_vmmc1_supply[] = {
REGULATOR_SUPPLY("vmmc", "omap_hsmmc.0"),
};
#if defined(CONFIG_LEDS_GPIO) || defined(CONFIG_LEDS_GPIO_MODULE)
#include <linux/leds.h>
static struct gpio_led gpio_leds[] = {
{
.name = "overo:red:gpio21",
.default_trigger = "heartbeat",
.gpio = 21,
.active_low = true,
},
{
.name = "overo:blue:gpio22",
.default_trigger = "none",
.gpio = 22,
.active_low = true,
},
{
.name = "overo:blue:COM",
.default_trigger = "mmc0",
.gpio = -EINVAL, /* gets replaced */
.active_low = true,
},
};
static struct gpio_led_platform_data gpio_leds_pdata = {
.leds = gpio_leds,
.num_leds = ARRAY_SIZE(gpio_leds),
};
static struct platform_device gpio_leds_device = {
.name = "leds-gpio",
.id = -1,
.dev = {
.platform_data = &gpio_leds_pdata,
},
};
static void __init overo_init_led(void)
{
platform_device_register(&gpio_leds_device);
}
#else
static inline void __init overo_init_led(void) { return; }
#endif
#if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
#include <linux/input.h>
#include <linux/gpio_keys.h>
static struct gpio_keys_button gpio_buttons[] = {
{
.code = BTN_0,
.gpio = 23,
.desc = "button0",
.wakeup = 1,
},
{
.code = BTN_1,
.gpio = 14,
.desc = "button1",
.wakeup = 1,
},
};
static struct gpio_keys_platform_data gpio_keys_pdata = {
.buttons = gpio_buttons,
.nbuttons = ARRAY_SIZE(gpio_buttons),
};
static struct platform_device gpio_keys_device = {
.name = "gpio-keys",
.id = -1,
.dev = {
.platform_data = &gpio_keys_pdata,
},
};
static void __init overo_init_keys(void)
{
platform_device_register(&gpio_keys_device);
}
#else
static inline void __init overo_init_keys(void) { return; }
#endif
static int overo_twl_gpio_setup(struct device *dev,
unsigned gpio, unsigned ngpio)
{
#if defined(CONFIG_LEDS_GPIO) || defined(CONFIG_LEDS_GPIO_MODULE)
/* TWL4030_GPIO_MAX + 1 == ledB, PMU_STAT (out, active low LED) */
gpio_leds[2].gpio = gpio + TWL4030_GPIO_MAX + 1;
#endif
return 0;
}
static struct twl4030_gpio_platform_data overo_gpio_data = {
.gpio_base = OMAP_MAX_GPIO_LINES,
.irq_base = TWL4030_GPIO_IRQ_BASE,
.irq_end = TWL4030_GPIO_IRQ_END,
.use_leds = true,
.setup = overo_twl_gpio_setup,
};
static struct regulator_init_data overo_vmmc1 = {
.constraints = {
.min_uV = 1850000,
.max_uV = 3150000,
.valid_modes_mask = REGULATOR_MODE_NORMAL
| REGULATOR_MODE_STANDBY,
.valid_ops_mask = REGULATOR_CHANGE_VOLTAGE
| REGULATOR_CHANGE_MODE
| REGULATOR_CHANGE_STATUS,
},
.num_consumer_supplies = ARRAY_SIZE(overo_vmmc1_supply),
.consumer_supplies = overo_vmmc1_supply,
};
static struct twl4030_platform_data overo_twldata = {
.gpio = &overo_gpio_data,
.vmmc1 = &overo_vmmc1,
};
static int __init overo_i2c_init(void)
{
omap3_pmic_get_config(&overo_twldata,
TWL_COMMON_PDATA_USB | TWL_COMMON_PDATA_AUDIO,
TWL_COMMON_REGULATOR_VDAC | TWL_COMMON_REGULATOR_VPLL2);
overo_twldata.vpll2->constraints.name = "VDVI";
omap3_pmic_init("tps65950", &overo_twldata);
/* i2c2 pins are used for gpio */
omap_register_i2c_bus(3, 400, NULL, 0);
return 0;
}
static struct spi_board_info overo_spi_board_info[] __initdata = {
#if defined(CONFIG_PANEL_LGPHILIPS_LB035Q02) || \
defined(CONFIG_PANEL_LGPHILIPS_LB035Q02_MODULE)
{
.modalias = "lgphilips_lb035q02_panel-spi",
.bus_num = 1,
.chip_select = 1,
.max_speed_hz = 500000,
.mode = SPI_MODE_3,
},
#endif
};
static int __init overo_spi_init(void)
{
overo_ads7846_init();
spi_register_board_info(overo_spi_board_info,
ARRAY_SIZE(overo_spi_board_info));
return 0;
}
static const struct usbhs_omap_board_data usbhs_bdata __initconst = {
.port_mode[0] = OMAP_USBHS_PORT_MODE_UNUSED,
.port_mode[1] = OMAP_EHCI_PORT_MODE_PHY,
.port_mode[2] = OMAP_USBHS_PORT_MODE_UNUSED,
.phy_reset = true,
.reset_gpio_port[0] = -EINVAL,
.reset_gpio_port[1] = OVERO_GPIO_USBH_NRESET,
.reset_gpio_port[2] = -EINVAL
};
#ifdef CONFIG_OMAP_MUX
static struct omap_board_mux board_mux[] __initdata = {
{ .reg_offset = OMAP_MUX_TERMINATOR },
};
#endif
static struct gpio overo_bt_gpios[] __initdata = {
{ OVERO_GPIO_BT_XGATE, GPIOF_OUT_INIT_LOW, "lcd enable" },
{ OVERO_GPIO_BT_NRESET, GPIOF_OUT_INIT_HIGH, "lcd bl enable" },
};
static void __init overo_init(void)
{
int ret;
omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);
omap_hsmmc_init(mmc);
overo_i2c_init();
omap_display_init(&overo_dss_data);
omap_serial_init();
omap_sdrc_init(mt46h32m32lf6_sdrc_params,
mt46h32m32lf6_sdrc_params);
omap_nand_flash_init(0, overo_nand_partitions,
ARRAY_SIZE(overo_nand_partitions));
usb_musb_init(NULL);
usbhs_init(&usbhs_bdata);
overo_spi_init();
overo_init_smsc911x();
overo_display_init();
overo_init_led();
overo_init_keys();
/* Ensure SDRC pins are mux'd for self-refresh */
omap_mux_init_signal("sdrc_cke0", OMAP_PIN_OUTPUT);
omap_mux_init_signal("sdrc_cke1", OMAP_PIN_OUTPUT);
ret = gpio_request_one(OVERO_GPIO_W2W_NRESET, GPIOF_OUT_INIT_HIGH,
"OVERO_GPIO_W2W_NRESET");
if (ret == 0) {
gpio_export(OVERO_GPIO_W2W_NRESET, 0);
gpio_set_value(OVERO_GPIO_W2W_NRESET, 0);
udelay(10);
gpio_set_value(OVERO_GPIO_W2W_NRESET, 1);
} else {
printk(KERN_ERR "could not obtain gpio for "
"OVERO_GPIO_W2W_NRESET\n");
}
ret = gpio_request_array(overo_bt_gpios, ARRAY_SIZE(overo_bt_gpios));
if (ret) {
pr_err("%s: could not obtain BT gpios\n", __func__);
} else {
gpio_export(OVERO_GPIO_BT_XGATE, 0);
gpio_export(OVERO_GPIO_BT_NRESET, 0);
gpio_set_value(OVERO_GPIO_BT_NRESET, 0);
mdelay(6);
gpio_set_value(OVERO_GPIO_BT_NRESET, 1);
}
ret = gpio_request_one(OVERO_GPIO_USBH_CPEN, GPIOF_OUT_INIT_HIGH,
"OVERO_GPIO_USBH_CPEN");
if (ret == 0)
gpio_export(OVERO_GPIO_USBH_CPEN, 0);
else
printk(KERN_ERR "could not obtain gpio for "
"OVERO_GPIO_USBH_CPEN\n");
}
MACHINE_START(OVERO, "Gumstix Overo")
.atag_offset = 0x100,
.reserve = omap_reserve,
.map_io = omap3_map_io,
.init_early = omap35xx_init_early,
.init_irq = omap3_init_irq,
.handle_irq = omap3_intc_handle_irq,
.init_machine = overo_init,
.timer = &omap3_timer,
.restart = omap_prcm_restart,
MACHINE_END
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