- 根目录:
- arch
- arm
- mach-omap1
- board-osk.c
/*
* linux/arch/arm/mach-omap1/board-osk.c
*
* Board specific init for OMAP5912 OSK
*
* Written by Dirk Behme <dirk.behme@de.bosch.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
* NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* 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.,
* 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <linux/gpio.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <linux/i2c.h>
#include <linux/leds.h>
#include <linux/smc91x.h>
#include <linux/omapfb.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
#include <linux/mtd/physmap.h>
#include <linux/i2c/tps65010.h>
#include <linux/platform_data/gpio-omap.h>
#include <linux/platform_data/omap1_bl.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <mach/flash.h>
#include <mach/mux.h>
#include <mach/tc.h>
#include <mach/hardware.h>
#include <mach/usb.h>
#include "common.h"
/* At OMAP5912 OSK the Ethernet is directly connected to CS1 */
#define OMAP_OSK_ETHR_START 0x04800300
/* TPS65010 has four GPIOs. nPG and LED2 can be treated like GPIOs with
* alternate pin configurations for hardware-controlled blinking.
*/
#define OSK_TPS_GPIO_BASE (OMAP_MAX_GPIO_LINES + 16 /* MPUIO */)
# define OSK_TPS_GPIO_USB_PWR_EN (OSK_TPS_GPIO_BASE + 0)
# define OSK_TPS_GPIO_LED_D3 (OSK_TPS_GPIO_BASE + 1)
# define OSK_TPS_GPIO_LAN_RESET (OSK_TPS_GPIO_BASE + 2)
# define OSK_TPS_GPIO_DSP_PWR_EN (OSK_TPS_GPIO_BASE + 3)
# define OSK_TPS_GPIO_LED_D9 (OSK_TPS_GPIO_BASE + 4)
# define OSK_TPS_GPIO_LED_D2 (OSK_TPS_GPIO_BASE + 5)
static struct mtd_partition osk_partitions[] = {
/* bootloader (U-Boot, etc) in first sector */
{
.name = "bootloader",
.offset = 0,
.size = SZ_128K,
.mask_flags = MTD_WRITEABLE, /* force read-only */
},
/* bootloader params in the next sector */
{
.name = "params",
.offset = MTDPART_OFS_APPEND,
.size = SZ_128K,
.mask_flags = 0,
}, {
.name = "kernel",
.offset = MTDPART_OFS_APPEND,
.size = SZ_2M,
.mask_flags = 0
}, {
.name = "filesystem",
.offset = MTDPART_OFS_APPEND,
.size = MTDPART_SIZ_FULL,
.mask_flags = 0
}
};
static struct physmap_flash_data osk_flash_data = {
.width = 2,
.set_vpp = omap1_set_vpp,
.parts = osk_partitions,
.nr_parts = ARRAY_SIZE(osk_partitions),
};
static struct resource osk_flash_resource = {
/* this is on CS3, wherever it's mapped */
.flags = IORESOURCE_MEM,
};
static struct platform_device osk5912_flash_device = {
.name = "physmap-flash",
.id = 0,
.dev = {
.platform_data = &osk_flash_data,
},
.num_resources = 1,
.resource = &osk_flash_resource,
};
static struct smc91x_platdata osk5912_smc91x_info = {
.flags = SMC91X_USE_16BIT | SMC91X_NOWAIT,
.leda = RPC_LED_100_10,
.ledb = RPC_LED_TX_RX,
};
static struct resource osk5912_smc91x_resources[] = {
[0] = {
.start = OMAP_OSK_ETHR_START, /* Physical */
.end = OMAP_OSK_ETHR_START + 0xf,
.flags = IORESOURCE_MEM,
},
[1] = {
.flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
},
};
static struct platform_device osk5912_smc91x_device = {
.name = "smc91x",
.id = -1,
.dev = {
.platform_data = &osk5912_smc91x_info,
},
.num_resources = ARRAY_SIZE(osk5912_smc91x_resources),
.resource = osk5912_smc91x_resources,
};
static struct resource osk5912_cf_resources[] = {
[0] = {
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device osk5912_cf_device = {
.name = "omap_cf",
.id = -1,
.dev = {
.platform_data = (void *) 2 /* CS2 */,
},
.num_resources = ARRAY_SIZE(osk5912_cf_resources),
.resource = osk5912_cf_resources,
};
static struct platform_device *osk5912_devices[] __initdata = {
&osk5912_flash_device,
&osk5912_smc91x_device,
&osk5912_cf_device,
};
static struct gpio_led tps_leds[] = {
/* NOTE: D9 and D2 have hardware blink support.
* Also, D9 requires non-battery power.
*/
{ .gpio = OSK_TPS_GPIO_LED_D9, .name = "d9",
.default_trigger = "ide-disk", },
{ .gpio = OSK_TPS_GPIO_LED_D2, .name = "d2", },
{ .gpio = OSK_TPS_GPIO_LED_D3, .name = "d3", .active_low = 1,
.default_trigger = "heartbeat", },
};
static struct gpio_led_platform_data tps_leds_data = {
.num_leds = 3,
.leds = tps_leds,
};
static struct platform_device osk5912_tps_leds = {
.name = "leds-gpio",
.id = 0,
.dev.platform_data = &tps_leds_data,
};
static int osk_tps_setup(struct i2c_client *client, void *context)
{
if (!IS_BUILTIN(CONFIG_TPS65010))
return -ENOSYS;
/* Set GPIO 1 HIGH to disable VBUS power supply;
* OHCI driver powers it up/down as needed.
*/
gpio_request(OSK_TPS_GPIO_USB_PWR_EN, "n_vbus_en");
gpio_direction_output(OSK_TPS_GPIO_USB_PWR_EN, 1);
/* Set GPIO 2 high so LED D3 is off by default */
tps65010_set_gpio_out_value(GPIO2, HIGH);
/* Set GPIO 3 low to take ethernet out of reset */
gpio_request(OSK_TPS_GPIO_LAN_RESET, "smc_reset");
gpio_direction_output(OSK_TPS_GPIO_LAN_RESET, 0);
/* GPIO4 is VDD_DSP */
gpio_request(OSK_TPS_GPIO_DSP_PWR_EN, "dsp_power");
gpio_direction_output(OSK_TPS_GPIO_DSP_PWR_EN, 1);
/* REVISIT if DSP support isn't configured, power it off ... */
/* Let LED1 (D9) blink; leds-gpio may override it */
tps65010_set_led(LED1, BLINK);
/* Set LED2 off by default */
tps65010_set_led(LED2, OFF);
/* Enable LOW_PWR handshake */
tps65010_set_low_pwr(ON);
/* Switch VLDO2 to 3.0V for AIC23 */
tps65010_config_vregs1(TPS_LDO2_ENABLE | TPS_VLDO2_3_0V
| TPS_LDO1_ENABLE);
/* register these three LEDs */
osk5912_tps_leds.dev.parent = &client->dev;
platform_device_register(&osk5912_tps_leds);
return 0;
}
static struct tps65010_board tps_board = {
.base = OSK_TPS_GPIO_BASE,
.outmask = 0x0f,
.setup = osk_tps_setup,
};
static struct i2c_board_info __initdata osk_i2c_board_info[] = {
{
I2C_BOARD_INFO("tps65010", 0x48),
.platform_data = &tps_board,
},
{
I2C_BOARD_INFO("tlv320aic23", 0x1B),
},
/* TODO when driver support is ready:
* - optionally on Mistral, ov9640 camera sensor at 0x30
*/
};
static void __init osk_init_smc91x(void)
{
u32 l;
if ((gpio_request(0, "smc_irq")) < 0) {
printk("Error requesting gpio 0 for smc91x irq\n");
return;
}
/* Check EMIFS wait states to fix errors with SMC_GET_PKT_HDR */
l = omap_readl(EMIFS_CCS(1));
l |= 0x3;
omap_writel(l, EMIFS_CCS(1));
}
static void __init osk_init_cf(void)
{
omap_cfg_reg(M7_1610_GPIO62);
if ((gpio_request(62, "cf_irq")) < 0) {
printk("Error requesting gpio 62 for CF irq\n");
return;
}
/* the CF I/O IRQ is really active-low */
irq_set_irq_type(gpio_to_irq(62), IRQ_TYPE_EDGE_FALLING);
}
static struct omap_usb_config osk_usb_config __initdata = {
/* has usb host connector (A) ... for development it can also
* be used, with a NONSTANDARD gender-bending cable/dongle, as
* a peripheral.
*/
#if IS_ENABLED(CONFIG_USB_OMAP)
.register_dev = 1,
.hmc_mode = 0,
#else
.register_host = 1,
.hmc_mode = 16,
.rwc = 1,
#endif
.pins[0] = 2,
};
#ifdef CONFIG_OMAP_OSK_MISTRAL
static struct omap_lcd_config osk_lcd_config __initdata = {
.ctrl_name = "internal",
};
#endif
#ifdef CONFIG_OMAP_OSK_MISTRAL
#include <linux/input.h>
#include <linux/platform_data/at24.h>
#include <linux/spi/spi.h>
#include <linux/spi/ads7846.h>
#include <linux/platform_data/keypad-omap.h>
static struct at24_platform_data at24c04 = {
.byte_len = SZ_4K / 8,
.page_size = 16,
};
static struct i2c_board_info __initdata mistral_i2c_board_info[] = {
{
/* NOTE: powered from LCD supply */
I2C_BOARD_INFO("24c04", 0x50),
.platform_data = &at24c04,
},
/* TODO when driver support is ready:
* - optionally ov9640 camera sensor at 0x30
*/
};
static const unsigned int osk_keymap[] = {
/* KEY(col, row, code) */
KEY(0, 0, KEY_F1), /* SW4 */
KEY(3, 0, KEY_UP), /* (sw2/up) */
KEY(1, 1, KEY_LEFTCTRL), /* SW5 */
KEY(2, 1, KEY_LEFT), /* (sw2/left) */
KEY(0, 2, KEY_SPACE), /* SW3 */
KEY(1, 2, KEY_ESC), /* SW6 */
KEY(2, 2, KEY_DOWN), /* (sw2/down) */
KEY(2, 3, KEY_ENTER), /* (sw2/select) */
KEY(3, 3, KEY_RIGHT), /* (sw2/right) */
};
static const struct matrix_keymap_data osk_keymap_data = {
.keymap = osk_keymap,
.keymap_size = ARRAY_SIZE(osk_keymap),
};
static struct omap_kp_platform_data osk_kp_data = {
.rows = 8,
.cols = 8,
.keymap_data = &osk_keymap_data,
.delay = 9,
};
static struct resource osk5912_kp_resources[] = {
[0] = {
.start = INT_KEYBOARD,
.end = INT_KEYBOARD,
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device osk5912_kp_device = {
.name = "omap-keypad",
.id = -1,
.dev = {
.platform_data = &osk_kp_data,
},
.num_resources = ARRAY_SIZE(osk5912_kp_resources),
.resource = osk5912_kp_resources,
};
static struct omap_backlight_config mistral_bl_data = {
.default_intensity = 0xa0,
};
static struct platform_device mistral_bl_device = {
.name = "omap-bl",
.id = -1,
.dev = {
.platform_data = &mistral_bl_data,
},
};
static struct platform_device osk5912_lcd_device = {
.name = "lcd_osk",
.id = -1,
};
static struct gpio_led mistral_gpio_led_pins[] = {
{
.name = "mistral:red",
.default_trigger = "heartbeat",
.gpio = 3,
},
{
.name = "mistral:green",
.default_trigger = "cpu0",
.gpio = OMAP_MPUIO(4),
},
};
static struct gpio_led_platform_data mistral_gpio_led_data = {
.leds = mistral_gpio_led_pins,
.num_leds = ARRAY_SIZE(mistral_gpio_led_pins),
};
static struct platform_device mistral_gpio_leds = {
.name = "leds-gpio",
.id = -1,
.dev = {
.platform_data = &mistral_gpio_led_data,
},
};
static struct platform_device *mistral_devices[] __initdata = {
&osk5912_kp_device,
&mistral_bl_device,
&osk5912_lcd_device,
&mistral_gpio_leds,
};
static int mistral_get_pendown_state(void)
{
return !gpio_get_value(4);
}
static const struct ads7846_platform_data mistral_ts_info = {
.model = 7846,
.vref_delay_usecs = 100, /* internal, no capacitor */
.x_plate_ohms = 419,
.y_plate_ohms = 486,
.get_pendown_state = mistral_get_pendown_state,
};
static struct spi_board_info __initdata mistral_boardinfo[] = { {
/* MicroWire (bus 2) CS0 has an ads7846e */
.modalias = "ads7846",
.platform_data = &mistral_ts_info,
.max_speed_hz = 120000 /* max sample rate at 3V */
* 26 /* command + data + overhead */,
.bus_num = 2,
.chip_select = 0,
} };
#ifdef CONFIG_PM
static irqreturn_t
osk_mistral_wake_interrupt(int irq, void *ignored)
{
return IRQ_HANDLED;
}
#endif
static void __init osk_mistral_init(void)
{
/* NOTE: we could actually tell if there's a Mistral board
* attached, e.g. by trying to read something from the ads7846.
* But this arch_init() code is too early for that, since we
* can't talk to the ads or even the i2c eeprom.
*/
/* parallel camera interface */
omap_cfg_reg(J15_1610_CAM_LCLK);
omap_cfg_reg(J18_1610_CAM_D7);
omap_cfg_reg(J19_1610_CAM_D6);
omap_cfg_reg(J14_1610_CAM_D5);
omap_cfg_reg(K18_1610_CAM_D4);
omap_cfg_reg(K19_1610_CAM_D3);
omap_cfg_reg(K15_1610_CAM_D2);
omap_cfg_reg(K14_1610_CAM_D1);
omap_cfg_reg(L19_1610_CAM_D0);
omap_cfg_reg(L18_1610_CAM_VS);
omap_cfg_reg(L15_1610_CAM_HS);
omap_cfg_reg(M19_1610_CAM_RSTZ);
omap_cfg_reg(Y15_1610_CAM_OUTCLK);
/* serial camera interface */
omap_cfg_reg(H19_1610_CAM_EXCLK);
omap_cfg_reg(W13_1610_CCP_CLKM);
omap_cfg_reg(Y12_1610_CCP_CLKP);
/* CCP_DATAM CONFLICTS WITH UART1.TX (and serial console) */
/* omap_cfg_reg(Y14_1610_CCP_DATAM); */
omap_cfg_reg(W14_1610_CCP_DATAP);
/* CAM_PWDN */
if (gpio_request(11, "cam_pwdn") == 0) {
omap_cfg_reg(N20_1610_GPIO11);
gpio_direction_output(11, 0);
} else
pr_debug("OSK+Mistral: CAM_PWDN is awol\n");
/* omap_cfg_reg(P19_1610_GPIO6); */ /* BUSY */
gpio_request(6, "ts_busy");
gpio_direction_input(6);
omap_cfg_reg(P20_1610_GPIO4); /* PENIRQ */
gpio_request(4, "ts_int");
gpio_direction_input(4);
irq_set_irq_type(gpio_to_irq(4), IRQ_TYPE_EDGE_FALLING);
mistral_boardinfo[0].irq = gpio_to_irq(4);
spi_register_board_info(mistral_boardinfo,
ARRAY_SIZE(mistral_boardinfo));
/* the sideways button (SW1) is for use as a "wakeup" button
*
* NOTE: The Mistral board has the wakeup button (SW1) wired
* to the LCD 3.3V rail, which is powered down during suspend.
* To allow this button to wake up the omap, work around this
* HW bug by rewiring SW1 to use the main 3.3V rail.
*/
omap_cfg_reg(N15_1610_MPUIO2);
if (gpio_request(OMAP_MPUIO(2), "wakeup") == 0) {
int ret = 0;
int irq = gpio_to_irq(OMAP_MPUIO(2));
gpio_direction_input(OMAP_MPUIO(2));
irq_set_irq_type(irq, IRQ_TYPE_EDGE_RISING);
#ifdef CONFIG_PM
/* share the IRQ in case someone wants to use the
* button for more than wakeup from system sleep.
*/
ret = request_irq(irq,
&osk_mistral_wake_interrupt,
IRQF_SHARED, "mistral_wakeup",
&osk_mistral_wake_interrupt);
if (ret != 0) {
gpio_free(OMAP_MPUIO(2));
printk(KERN_ERR "OSK+Mistral: no wakeup irq, %d?\n",
ret);
} else
enable_irq_wake(irq);
#endif
} else
printk(KERN_ERR "OSK+Mistral: wakeup button is awol\n");
/* LCD: backlight, and power; power controls other devices on the
* board, like the touchscreen, EEPROM, and wakeup (!) switch.
*/
omap_cfg_reg(PWL);
if (gpio_request(2, "lcd_pwr") == 0)
gpio_direction_output(2, 1);
/*
* GPIO based LEDs
*/
omap_cfg_reg(P18_1610_GPIO3);
omap_cfg_reg(MPUIO4);
i2c_register_board_info(1, mistral_i2c_board_info,
ARRAY_SIZE(mistral_i2c_board_info));
platform_add_devices(mistral_devices, ARRAY_SIZE(mistral_devices));
}
#else
static void __init osk_mistral_init(void) { }
#endif
#define EMIFS_CS3_VAL (0x88013141)
static void __init osk_init(void)
{
u32 l;
osk_init_smc91x();
osk_init_cf();
/* Workaround for wrong CS3 (NOR flash) timing
* There are some U-Boot versions out there which configure
* wrong CS3 memory timings. This mainly leads to CRC
* or similar errors if you use NOR flash (e.g. with JFFS2)
*/
l = omap_readl(EMIFS_CCS(3));
if (l != EMIFS_CS3_VAL)
omap_writel(EMIFS_CS3_VAL, EMIFS_CCS(3));
osk_flash_resource.end = osk_flash_resource.start = omap_cs3_phys();
osk_flash_resource.end += SZ_32M - 1;
osk5912_smc91x_resources[1].start = gpio_to_irq(0);
osk5912_smc91x_resources[1].end = gpio_to_irq(0);
osk5912_cf_resources[0].start = gpio_to_irq(62);
osk5912_cf_resources[0].end = gpio_to_irq(62);
platform_add_devices(osk5912_devices, ARRAY_SIZE(osk5912_devices));
l = omap_readl(USB_TRANSCEIVER_CTRL);
l |= (3 << 1);
omap_writel(l, USB_TRANSCEIVER_CTRL);
omap1_usb_init(&osk_usb_config);
/* irq for tps65010 chip */
/* bootloader effectively does: omap_cfg_reg(U19_1610_MPUIO1); */
if (gpio_request(OMAP_MPUIO(1), "tps65010") == 0)
gpio_direction_input(OMAP_MPUIO(1));
omap_serial_init();
osk_i2c_board_info[0].irq = gpio_to_irq(OMAP_MPUIO(1));
omap_register_i2c_bus(1, 400, osk_i2c_board_info,
ARRAY_SIZE(osk_i2c_board_info));
osk_mistral_init();
#ifdef CONFIG_OMAP_OSK_MISTRAL
omapfb_set_lcd_config(&osk_lcd_config);
#endif
}
MACHINE_START(OMAP_OSK, "TI-OSK")
/* Maintainer: Dirk Behme <dirk.behme@de.bosch.com> */
.atag_offset = 0x100,
.map_io = omap16xx_map_io,
.init_early = omap1_init_early,
.init_irq = omap1_init_irq,
.init_machine = osk_init,
.init_late = omap1_init_late,
.init_time = omap1_timer_init,
.restart = omap1_restart,
MACHINE_END