forked from Minki/linux
f230d3f53d
The AT91 I2C driver is currently marked as "broken" due to hardware issues. This patch enables AT91-based platforms to also use the bitbanged GPIO for I2C. This updates platform setup logic (setting up an i2c-gpio device using the same pins as the i2c-at91 device, unless only the BROKEN driver is enabled). Also make use of the new-style initialization of I2C devices using i2c_register_board_info(). Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Victor <andrew@sanpeople.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
781 lines
20 KiB
C
781 lines
20 KiB
C
/*
|
|
* arch/arm/mach-at91/at91sam9261_devices.c
|
|
*
|
|
* Copyright (C) 2005 Thibaut VARENE <varenet@parisc-linux.org>
|
|
* Copyright (C) 2005 David Brownell
|
|
*
|
|
* 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.
|
|
*
|
|
*/
|
|
#include <asm/mach/arch.h>
|
|
#include <asm/mach/map.h>
|
|
|
|
#include <linux/platform_device.h>
|
|
#include <linux/i2c-gpio.h>
|
|
|
|
#include <linux/fb.h>
|
|
#include <video/atmel_lcdc.h>
|
|
|
|
#include <asm/arch/board.h>
|
|
#include <asm/arch/gpio.h>
|
|
#include <asm/arch/at91sam9261.h>
|
|
#include <asm/arch/at91sam9261_matrix.h>
|
|
#include <asm/arch/at91sam926x_mc.h>
|
|
|
|
#include "generic.h"
|
|
|
|
|
|
/* --------------------------------------------------------------------
|
|
* USB Host
|
|
* -------------------------------------------------------------------- */
|
|
|
|
#if defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE)
|
|
static u64 ohci_dmamask = 0xffffffffUL;
|
|
static struct at91_usbh_data usbh_data;
|
|
|
|
static struct resource usbh_resources[] = {
|
|
[0] = {
|
|
.start = AT91SAM9261_UHP_BASE,
|
|
.end = AT91SAM9261_UHP_BASE + SZ_1M - 1,
|
|
.flags = IORESOURCE_MEM,
|
|
},
|
|
[1] = {
|
|
.start = AT91SAM9261_ID_UHP,
|
|
.end = AT91SAM9261_ID_UHP,
|
|
.flags = IORESOURCE_IRQ,
|
|
},
|
|
};
|
|
|
|
static struct platform_device at91sam9261_usbh_device = {
|
|
.name = "at91_ohci",
|
|
.id = -1,
|
|
.dev = {
|
|
.dma_mask = &ohci_dmamask,
|
|
.coherent_dma_mask = 0xffffffff,
|
|
.platform_data = &usbh_data,
|
|
},
|
|
.resource = usbh_resources,
|
|
.num_resources = ARRAY_SIZE(usbh_resources),
|
|
};
|
|
|
|
void __init at91_add_device_usbh(struct at91_usbh_data *data)
|
|
{
|
|
if (!data)
|
|
return;
|
|
|
|
usbh_data = *data;
|
|
platform_device_register(&at91sam9261_usbh_device);
|
|
}
|
|
#else
|
|
void __init at91_add_device_usbh(struct at91_usbh_data *data) {}
|
|
#endif
|
|
|
|
|
|
/* --------------------------------------------------------------------
|
|
* USB Device (Gadget)
|
|
* -------------------------------------------------------------------- */
|
|
|
|
#ifdef CONFIG_USB_GADGET_AT91
|
|
static struct at91_udc_data udc_data;
|
|
|
|
static struct resource udc_resources[] = {
|
|
[0] = {
|
|
.start = AT91SAM9261_BASE_UDP,
|
|
.end = AT91SAM9261_BASE_UDP + SZ_16K - 1,
|
|
.flags = IORESOURCE_MEM,
|
|
},
|
|
[1] = {
|
|
.start = AT91SAM9261_ID_UDP,
|
|
.end = AT91SAM9261_ID_UDP,
|
|
.flags = IORESOURCE_IRQ,
|
|
},
|
|
};
|
|
|
|
static struct platform_device at91sam9261_udc_device = {
|
|
.name = "at91_udc",
|
|
.id = -1,
|
|
.dev = {
|
|
.platform_data = &udc_data,
|
|
},
|
|
.resource = udc_resources,
|
|
.num_resources = ARRAY_SIZE(udc_resources),
|
|
};
|
|
|
|
void __init at91_add_device_udc(struct at91_udc_data *data)
|
|
{
|
|
unsigned long x;
|
|
|
|
if (!data)
|
|
return;
|
|
|
|
if (data->vbus_pin) {
|
|
at91_set_gpio_input(data->vbus_pin, 0);
|
|
at91_set_deglitch(data->vbus_pin, 1);
|
|
}
|
|
|
|
/* Pullup pin is handled internally */
|
|
x = at91_sys_read(AT91_MATRIX_USBPUCR);
|
|
at91_sys_write(AT91_MATRIX_USBPUCR, x | AT91_MATRIX_USBPUCR_PUON);
|
|
|
|
udc_data = *data;
|
|
platform_device_register(&at91sam9261_udc_device);
|
|
}
|
|
#else
|
|
void __init at91_add_device_udc(struct at91_udc_data *data) {}
|
|
#endif
|
|
|
|
/* --------------------------------------------------------------------
|
|
* MMC / SD
|
|
* -------------------------------------------------------------------- */
|
|
|
|
#if defined(CONFIG_MMC_AT91) || defined(CONFIG_MMC_AT91_MODULE)
|
|
static u64 mmc_dmamask = 0xffffffffUL;
|
|
static struct at91_mmc_data mmc_data;
|
|
|
|
static struct resource mmc_resources[] = {
|
|
[0] = {
|
|
.start = AT91SAM9261_BASE_MCI,
|
|
.end = AT91SAM9261_BASE_MCI + SZ_16K - 1,
|
|
.flags = IORESOURCE_MEM,
|
|
},
|
|
[1] = {
|
|
.start = AT91SAM9261_ID_MCI,
|
|
.end = AT91SAM9261_ID_MCI,
|
|
.flags = IORESOURCE_IRQ,
|
|
},
|
|
};
|
|
|
|
static struct platform_device at91sam9261_mmc_device = {
|
|
.name = "at91_mci",
|
|
.id = -1,
|
|
.dev = {
|
|
.dma_mask = &mmc_dmamask,
|
|
.coherent_dma_mask = 0xffffffff,
|
|
.platform_data = &mmc_data,
|
|
},
|
|
.resource = mmc_resources,
|
|
.num_resources = ARRAY_SIZE(mmc_resources),
|
|
};
|
|
|
|
void __init at91_add_device_mmc(short mmc_id, struct at91_mmc_data *data)
|
|
{
|
|
if (!data)
|
|
return;
|
|
|
|
/* input/irq */
|
|
if (data->det_pin) {
|
|
at91_set_gpio_input(data->det_pin, 1);
|
|
at91_set_deglitch(data->det_pin, 1);
|
|
}
|
|
if (data->wp_pin)
|
|
at91_set_gpio_input(data->wp_pin, 1);
|
|
if (data->vcc_pin)
|
|
at91_set_gpio_output(data->vcc_pin, 0);
|
|
|
|
/* CLK */
|
|
at91_set_B_periph(AT91_PIN_PA2, 0);
|
|
|
|
/* CMD */
|
|
at91_set_B_periph(AT91_PIN_PA1, 1);
|
|
|
|
/* DAT0, maybe DAT1..DAT3 */
|
|
at91_set_B_periph(AT91_PIN_PA0, 1);
|
|
if (data->wire4) {
|
|
at91_set_B_periph(AT91_PIN_PA4, 1);
|
|
at91_set_B_periph(AT91_PIN_PA5, 1);
|
|
at91_set_B_periph(AT91_PIN_PA6, 1);
|
|
}
|
|
|
|
mmc_data = *data;
|
|
platform_device_register(&at91sam9261_mmc_device);
|
|
}
|
|
#else
|
|
void __init at91_add_device_mmc(short mmc_id, struct at91_mmc_data *data) {}
|
|
#endif
|
|
|
|
|
|
/* --------------------------------------------------------------------
|
|
* NAND / SmartMedia
|
|
* -------------------------------------------------------------------- */
|
|
|
|
#if defined(CONFIG_MTD_NAND_AT91) || defined(CONFIG_MTD_NAND_AT91_MODULE)
|
|
static struct at91_nand_data nand_data;
|
|
|
|
#define NAND_BASE AT91_CHIPSELECT_3
|
|
|
|
static struct resource nand_resources[] = {
|
|
{
|
|
.start = NAND_BASE,
|
|
.end = NAND_BASE + SZ_256M - 1,
|
|
.flags = IORESOURCE_MEM,
|
|
}
|
|
};
|
|
|
|
static struct platform_device at91_nand_device = {
|
|
.name = "at91_nand",
|
|
.id = -1,
|
|
.dev = {
|
|
.platform_data = &nand_data,
|
|
},
|
|
.resource = nand_resources,
|
|
.num_resources = ARRAY_SIZE(nand_resources),
|
|
};
|
|
|
|
void __init at91_add_device_nand(struct at91_nand_data *data)
|
|
{
|
|
unsigned long csa, mode;
|
|
|
|
if (!data)
|
|
return;
|
|
|
|
csa = at91_sys_read(AT91_MATRIX_EBICSA);
|
|
at91_sys_write(AT91_MATRIX_EBICSA, csa | AT91_MATRIX_CS3A_SMC);
|
|
|
|
/* set the bus interface characteristics */
|
|
at91_sys_write(AT91_SMC_SETUP(3), AT91_SMC_NWESETUP_(0) | AT91_SMC_NCS_WRSETUP_(0)
|
|
| AT91_SMC_NRDSETUP_(0) | AT91_SMC_NCS_RDSETUP_(0));
|
|
|
|
at91_sys_write(AT91_SMC_PULSE(3), AT91_SMC_NWEPULSE_(2) | AT91_SMC_NCS_WRPULSE_(5)
|
|
| AT91_SMC_NRDPULSE_(2) | AT91_SMC_NCS_RDPULSE_(5));
|
|
|
|
at91_sys_write(AT91_SMC_CYCLE(3), AT91_SMC_NWECYCLE_(7) | AT91_SMC_NRDCYCLE_(7));
|
|
|
|
if (data->bus_width_16)
|
|
mode = AT91_SMC_DBW_16;
|
|
else
|
|
mode = AT91_SMC_DBW_8;
|
|
at91_sys_write(AT91_SMC_MODE(3), mode | AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE | AT91_SMC_TDF_(1));
|
|
|
|
/* enable pin */
|
|
if (data->enable_pin)
|
|
at91_set_gpio_output(data->enable_pin, 1);
|
|
|
|
/* ready/busy pin */
|
|
if (data->rdy_pin)
|
|
at91_set_gpio_input(data->rdy_pin, 1);
|
|
|
|
/* card detect pin */
|
|
if (data->det_pin)
|
|
at91_set_gpio_input(data->det_pin, 1);
|
|
|
|
at91_set_A_periph(AT91_PIN_PC0, 0); /* NANDOE */
|
|
at91_set_A_periph(AT91_PIN_PC1, 0); /* NANDWE */
|
|
|
|
nand_data = *data;
|
|
platform_device_register(&at91_nand_device);
|
|
}
|
|
|
|
#else
|
|
void __init at91_add_device_nand(struct at91_nand_data *data) {}
|
|
#endif
|
|
|
|
|
|
/* --------------------------------------------------------------------
|
|
* TWI (i2c)
|
|
* -------------------------------------------------------------------- */
|
|
|
|
/*
|
|
* Prefer the GPIO code since the TWI controller isn't robust
|
|
* (gets overruns and underruns under load) and can only issue
|
|
* repeated STARTs in one scenario (the driver doesn't yet handle them).
|
|
*/
|
|
#if defined(CONFIG_I2C_GPIO) || defined(CONFIG_I2C_GPIO_MODULE)
|
|
|
|
static struct i2c_gpio_platform_data pdata = {
|
|
.sda_pin = AT91_PIN_PA7,
|
|
.sda_is_open_drain = 1,
|
|
.scl_pin = AT91_PIN_PA8,
|
|
.scl_is_open_drain = 1,
|
|
.udelay = 2, /* ~100 kHz */
|
|
};
|
|
|
|
static struct platform_device at91sam9261_twi_device = {
|
|
.name = "i2c-gpio",
|
|
.id = -1,
|
|
.dev.platform_data = &pdata,
|
|
};
|
|
|
|
void __init at91_add_device_i2c(struct i2c_board_info *devices, int nr_devices)
|
|
{
|
|
at91_set_GPIO_periph(AT91_PIN_PA7, 1); /* TWD (SDA) */
|
|
at91_set_multi_drive(AT91_PIN_PA7, 1);
|
|
|
|
at91_set_GPIO_periph(AT91_PIN_PA8, 1); /* TWCK (SCL) */
|
|
at91_set_multi_drive(AT91_PIN_PA8, 1);
|
|
|
|
i2c_register_board_info(0, devices, nr_devices);
|
|
platform_device_register(&at91sam9261_twi_device);
|
|
}
|
|
|
|
#elif defined(CONFIG_I2C_AT91) || defined(CONFIG_I2C_AT91_MODULE)
|
|
|
|
static struct resource twi_resources[] = {
|
|
[0] = {
|
|
.start = AT91SAM9261_BASE_TWI,
|
|
.end = AT91SAM9261_BASE_TWI + SZ_16K - 1,
|
|
.flags = IORESOURCE_MEM,
|
|
},
|
|
[1] = {
|
|
.start = AT91SAM9261_ID_TWI,
|
|
.end = AT91SAM9261_ID_TWI,
|
|
.flags = IORESOURCE_IRQ,
|
|
},
|
|
};
|
|
|
|
static struct platform_device at91sam9261_twi_device = {
|
|
.name = "at91_i2c",
|
|
.id = -1,
|
|
.resource = twi_resources,
|
|
.num_resources = ARRAY_SIZE(twi_resources),
|
|
};
|
|
|
|
void __init at91_add_device_i2c(struct i2c_board_info *devices, int nr_devices)
|
|
{
|
|
/* pins used for TWI interface */
|
|
at91_set_A_periph(AT91_PIN_PA7, 0); /* TWD */
|
|
at91_set_multi_drive(AT91_PIN_PA7, 1);
|
|
|
|
at91_set_A_periph(AT91_PIN_PA8, 0); /* TWCK */
|
|
at91_set_multi_drive(AT91_PIN_PA8, 1);
|
|
|
|
i2c_register_board_info(0, devices, nr_devices);
|
|
platform_device_register(&at91sam9261_twi_device);
|
|
}
|
|
#else
|
|
void __init at91_add_device_i2c(struct i2c_board_info *devices, int nr_devices) {}
|
|
#endif
|
|
|
|
|
|
/* --------------------------------------------------------------------
|
|
* SPI
|
|
* -------------------------------------------------------------------- */
|
|
|
|
#if defined(CONFIG_SPI_ATMEL) || defined(CONFIG_SPI_ATMEL_MODULE)
|
|
static u64 spi_dmamask = 0xffffffffUL;
|
|
|
|
static struct resource spi0_resources[] = {
|
|
[0] = {
|
|
.start = AT91SAM9261_BASE_SPI0,
|
|
.end = AT91SAM9261_BASE_SPI0 + SZ_16K - 1,
|
|
.flags = IORESOURCE_MEM,
|
|
},
|
|
[1] = {
|
|
.start = AT91SAM9261_ID_SPI0,
|
|
.end = AT91SAM9261_ID_SPI0,
|
|
.flags = IORESOURCE_IRQ,
|
|
},
|
|
};
|
|
|
|
static struct platform_device at91sam9261_spi0_device = {
|
|
.name = "atmel_spi",
|
|
.id = 0,
|
|
.dev = {
|
|
.dma_mask = &spi_dmamask,
|
|
.coherent_dma_mask = 0xffffffff,
|
|
},
|
|
.resource = spi0_resources,
|
|
.num_resources = ARRAY_SIZE(spi0_resources),
|
|
};
|
|
|
|
static const unsigned spi0_standard_cs[4] = { AT91_PIN_PA3, AT91_PIN_PA4, AT91_PIN_PA5, AT91_PIN_PA6 };
|
|
|
|
static struct resource spi1_resources[] = {
|
|
[0] = {
|
|
.start = AT91SAM9261_BASE_SPI1,
|
|
.end = AT91SAM9261_BASE_SPI1 + SZ_16K - 1,
|
|
.flags = IORESOURCE_MEM,
|
|
},
|
|
[1] = {
|
|
.start = AT91SAM9261_ID_SPI1,
|
|
.end = AT91SAM9261_ID_SPI1,
|
|
.flags = IORESOURCE_IRQ,
|
|
},
|
|
};
|
|
|
|
static struct platform_device at91sam9261_spi1_device = {
|
|
.name = "atmel_spi",
|
|
.id = 1,
|
|
.dev = {
|
|
.dma_mask = &spi_dmamask,
|
|
.coherent_dma_mask = 0xffffffff,
|
|
},
|
|
.resource = spi1_resources,
|
|
.num_resources = ARRAY_SIZE(spi1_resources),
|
|
};
|
|
|
|
static const unsigned spi1_standard_cs[4] = { AT91_PIN_PB28, AT91_PIN_PA24, AT91_PIN_PA25, AT91_PIN_PA26 };
|
|
|
|
void __init at91_add_device_spi(struct spi_board_info *devices, int nr_devices)
|
|
{
|
|
int i;
|
|
unsigned long cs_pin;
|
|
short enable_spi0 = 0;
|
|
short enable_spi1 = 0;
|
|
|
|
/* Choose SPI chip-selects */
|
|
for (i = 0; i < nr_devices; i++) {
|
|
if (devices[i].controller_data)
|
|
cs_pin = (unsigned long) devices[i].controller_data;
|
|
else if (devices[i].bus_num == 0)
|
|
cs_pin = spi0_standard_cs[devices[i].chip_select];
|
|
else
|
|
cs_pin = spi1_standard_cs[devices[i].chip_select];
|
|
|
|
if (devices[i].bus_num == 0)
|
|
enable_spi0 = 1;
|
|
else
|
|
enable_spi1 = 1;
|
|
|
|
/* enable chip-select pin */
|
|
at91_set_gpio_output(cs_pin, 1);
|
|
|
|
/* pass chip-select pin to driver */
|
|
devices[i].controller_data = (void *) cs_pin;
|
|
}
|
|
|
|
spi_register_board_info(devices, nr_devices);
|
|
|
|
/* Configure SPI bus(es) */
|
|
if (enable_spi0) {
|
|
at91_set_A_periph(AT91_PIN_PA0, 0); /* SPI0_MISO */
|
|
at91_set_A_periph(AT91_PIN_PA1, 0); /* SPI0_MOSI */
|
|
at91_set_A_periph(AT91_PIN_PA2, 0); /* SPI0_SPCK */
|
|
|
|
at91_clock_associate("spi0_clk", &at91sam9261_spi0_device.dev, "spi_clk");
|
|
platform_device_register(&at91sam9261_spi0_device);
|
|
}
|
|
if (enable_spi1) {
|
|
at91_set_A_periph(AT91_PIN_PB30, 0); /* SPI1_MISO */
|
|
at91_set_A_periph(AT91_PIN_PB31, 0); /* SPI1_MOSI */
|
|
at91_set_A_periph(AT91_PIN_PB29, 0); /* SPI1_SPCK */
|
|
|
|
at91_clock_associate("spi1_clk", &at91sam9261_spi1_device.dev, "spi_clk");
|
|
platform_device_register(&at91sam9261_spi1_device);
|
|
}
|
|
}
|
|
#else
|
|
void __init at91_add_device_spi(struct spi_board_info *devices, int nr_devices) {}
|
|
#endif
|
|
|
|
|
|
/* --------------------------------------------------------------------
|
|
* LCD Controller
|
|
* -------------------------------------------------------------------- */
|
|
|
|
#if defined(CONFIG_FB_ATMEL) || defined(CONFIG_FB_ATMEL_MODULE)
|
|
static u64 lcdc_dmamask = 0xffffffffUL;
|
|
static struct atmel_lcdfb_info lcdc_data;
|
|
|
|
static struct resource lcdc_resources[] = {
|
|
[0] = {
|
|
.start = AT91SAM9261_LCDC_BASE,
|
|
.end = AT91SAM9261_LCDC_BASE + SZ_4K - 1,
|
|
.flags = IORESOURCE_MEM,
|
|
},
|
|
[1] = {
|
|
.start = AT91SAM9261_ID_LCDC,
|
|
.end = AT91SAM9261_ID_LCDC,
|
|
.flags = IORESOURCE_IRQ,
|
|
},
|
|
#if defined(CONFIG_FB_INTSRAM)
|
|
[2] = {
|
|
.start = AT91SAM9261_SRAM_BASE,
|
|
.end = AT91SAM9261_SRAM_BASE + AT91SAM9261_SRAM_SIZE - 1,
|
|
.flags = IORESOURCE_MEM,
|
|
},
|
|
#endif
|
|
};
|
|
|
|
static struct platform_device at91_lcdc_device = {
|
|
.name = "atmel_lcdfb",
|
|
.id = 0,
|
|
.dev = {
|
|
.dma_mask = &lcdc_dmamask,
|
|
.coherent_dma_mask = 0xffffffff,
|
|
.platform_data = &lcdc_data,
|
|
},
|
|
.resource = lcdc_resources,
|
|
.num_resources = ARRAY_SIZE(lcdc_resources),
|
|
};
|
|
|
|
void __init at91_add_device_lcdc(struct atmel_lcdfb_info *data)
|
|
{
|
|
if (!data) {
|
|
return;
|
|
}
|
|
|
|
at91_set_A_periph(AT91_PIN_PB1, 0); /* LCDHSYNC */
|
|
at91_set_A_periph(AT91_PIN_PB2, 0); /* LCDDOTCK */
|
|
at91_set_A_periph(AT91_PIN_PB3, 0); /* LCDDEN */
|
|
at91_set_A_periph(AT91_PIN_PB4, 0); /* LCDCC */
|
|
at91_set_A_periph(AT91_PIN_PB7, 0); /* LCDD2 */
|
|
at91_set_A_periph(AT91_PIN_PB8, 0); /* LCDD3 */
|
|
at91_set_A_periph(AT91_PIN_PB9, 0); /* LCDD4 */
|
|
at91_set_A_periph(AT91_PIN_PB10, 0); /* LCDD5 */
|
|
at91_set_A_periph(AT91_PIN_PB11, 0); /* LCDD6 */
|
|
at91_set_A_periph(AT91_PIN_PB12, 0); /* LCDD7 */
|
|
at91_set_A_periph(AT91_PIN_PB15, 0); /* LCDD10 */
|
|
at91_set_A_periph(AT91_PIN_PB16, 0); /* LCDD11 */
|
|
at91_set_A_periph(AT91_PIN_PB17, 0); /* LCDD12 */
|
|
at91_set_A_periph(AT91_PIN_PB18, 0); /* LCDD13 */
|
|
at91_set_A_periph(AT91_PIN_PB19, 0); /* LCDD14 */
|
|
at91_set_A_periph(AT91_PIN_PB20, 0); /* LCDD15 */
|
|
at91_set_B_periph(AT91_PIN_PB23, 0); /* LCDD18 */
|
|
at91_set_B_periph(AT91_PIN_PB24, 0); /* LCDD19 */
|
|
at91_set_B_periph(AT91_PIN_PB25, 0); /* LCDD20 */
|
|
at91_set_B_periph(AT91_PIN_PB26, 0); /* LCDD21 */
|
|
at91_set_B_periph(AT91_PIN_PB27, 0); /* LCDD22 */
|
|
at91_set_B_periph(AT91_PIN_PB28, 0); /* LCDD23 */
|
|
|
|
lcdc_data = *data;
|
|
platform_device_register(&at91_lcdc_device);
|
|
}
|
|
#else
|
|
void __init at91_add_device_lcdc(struct atmel_lcdfb_info *data) {}
|
|
#endif
|
|
|
|
|
|
/* --------------------------------------------------------------------
|
|
* LEDs
|
|
* -------------------------------------------------------------------- */
|
|
|
|
#if defined(CONFIG_LEDS)
|
|
u8 at91_leds_cpu;
|
|
u8 at91_leds_timer;
|
|
|
|
void __init at91_init_leds(u8 cpu_led, u8 timer_led)
|
|
{
|
|
/* Enable GPIO to access the LEDs */
|
|
at91_set_gpio_output(cpu_led, 1);
|
|
at91_set_gpio_output(timer_led, 1);
|
|
|
|
at91_leds_cpu = cpu_led;
|
|
at91_leds_timer = timer_led;
|
|
}
|
|
#else
|
|
void __init at91_init_leds(u8 cpu_led, u8 timer_led) {}
|
|
#endif
|
|
|
|
|
|
/* --------------------------------------------------------------------
|
|
* UART
|
|
* -------------------------------------------------------------------- */
|
|
|
|
#if defined(CONFIG_SERIAL_ATMEL)
|
|
static struct resource dbgu_resources[] = {
|
|
[0] = {
|
|
.start = AT91_VA_BASE_SYS + AT91_DBGU,
|
|
.end = AT91_VA_BASE_SYS + AT91_DBGU + SZ_512 - 1,
|
|
.flags = IORESOURCE_MEM,
|
|
},
|
|
[1] = {
|
|
.start = AT91_ID_SYS,
|
|
.end = AT91_ID_SYS,
|
|
.flags = IORESOURCE_IRQ,
|
|
},
|
|
};
|
|
|
|
static struct atmel_uart_data dbgu_data = {
|
|
.use_dma_tx = 0,
|
|
.use_dma_rx = 0, /* DBGU not capable of receive DMA */
|
|
.regs = (void __iomem *)(AT91_VA_BASE_SYS + AT91_DBGU),
|
|
};
|
|
|
|
static struct platform_device at91sam9261_dbgu_device = {
|
|
.name = "atmel_usart",
|
|
.id = 0,
|
|
.dev = {
|
|
.platform_data = &dbgu_data,
|
|
.coherent_dma_mask = 0xffffffff,
|
|
},
|
|
.resource = dbgu_resources,
|
|
.num_resources = ARRAY_SIZE(dbgu_resources),
|
|
};
|
|
|
|
static inline void configure_dbgu_pins(void)
|
|
{
|
|
at91_set_A_periph(AT91_PIN_PA9, 0); /* DRXD */
|
|
at91_set_A_periph(AT91_PIN_PA10, 1); /* DTXD */
|
|
}
|
|
|
|
static struct resource uart0_resources[] = {
|
|
[0] = {
|
|
.start = AT91SAM9261_BASE_US0,
|
|
.end = AT91SAM9261_BASE_US0 + SZ_16K - 1,
|
|
.flags = IORESOURCE_MEM,
|
|
},
|
|
[1] = {
|
|
.start = AT91SAM9261_ID_US0,
|
|
.end = AT91SAM9261_ID_US0,
|
|
.flags = IORESOURCE_IRQ,
|
|
},
|
|
};
|
|
|
|
static struct atmel_uart_data uart0_data = {
|
|
.use_dma_tx = 1,
|
|
.use_dma_rx = 1,
|
|
};
|
|
|
|
static struct platform_device at91sam9261_uart0_device = {
|
|
.name = "atmel_usart",
|
|
.id = 1,
|
|
.dev = {
|
|
.platform_data = &uart0_data,
|
|
.coherent_dma_mask = 0xffffffff,
|
|
},
|
|
.resource = uart0_resources,
|
|
.num_resources = ARRAY_SIZE(uart0_resources),
|
|
};
|
|
|
|
static inline void configure_usart0_pins(void)
|
|
{
|
|
at91_set_A_periph(AT91_PIN_PC8, 1); /* TXD0 */
|
|
at91_set_A_periph(AT91_PIN_PC9, 0); /* RXD0 */
|
|
at91_set_A_periph(AT91_PIN_PC10, 0); /* RTS0 */
|
|
at91_set_A_periph(AT91_PIN_PC11, 0); /* CTS0 */
|
|
}
|
|
|
|
static struct resource uart1_resources[] = {
|
|
[0] = {
|
|
.start = AT91SAM9261_BASE_US1,
|
|
.end = AT91SAM9261_BASE_US1 + SZ_16K - 1,
|
|
.flags = IORESOURCE_MEM,
|
|
},
|
|
[1] = {
|
|
.start = AT91SAM9261_ID_US1,
|
|
.end = AT91SAM9261_ID_US1,
|
|
.flags = IORESOURCE_IRQ,
|
|
},
|
|
};
|
|
|
|
static struct atmel_uart_data uart1_data = {
|
|
.use_dma_tx = 1,
|
|
.use_dma_rx = 1,
|
|
};
|
|
|
|
static struct platform_device at91sam9261_uart1_device = {
|
|
.name = "atmel_usart",
|
|
.id = 2,
|
|
.dev = {
|
|
.platform_data = &uart1_data,
|
|
.coherent_dma_mask = 0xffffffff,
|
|
},
|
|
.resource = uart1_resources,
|
|
.num_resources = ARRAY_SIZE(uart1_resources),
|
|
};
|
|
|
|
static inline void configure_usart1_pins(void)
|
|
{
|
|
at91_set_A_periph(AT91_PIN_PC12, 1); /* TXD1 */
|
|
at91_set_A_periph(AT91_PIN_PC13, 0); /* RXD1 */
|
|
}
|
|
|
|
static struct resource uart2_resources[] = {
|
|
[0] = {
|
|
.start = AT91SAM9261_BASE_US2,
|
|
.end = AT91SAM9261_BASE_US2 + SZ_16K - 1,
|
|
.flags = IORESOURCE_MEM,
|
|
},
|
|
[1] = {
|
|
.start = AT91SAM9261_ID_US2,
|
|
.end = AT91SAM9261_ID_US2,
|
|
.flags = IORESOURCE_IRQ,
|
|
},
|
|
};
|
|
|
|
static struct atmel_uart_data uart2_data = {
|
|
.use_dma_tx = 1,
|
|
.use_dma_rx = 1,
|
|
};
|
|
|
|
static struct platform_device at91sam9261_uart2_device = {
|
|
.name = "atmel_usart",
|
|
.id = 3,
|
|
.dev = {
|
|
.platform_data = &uart2_data,
|
|
.coherent_dma_mask = 0xffffffff,
|
|
},
|
|
.resource = uart2_resources,
|
|
.num_resources = ARRAY_SIZE(uart2_resources),
|
|
};
|
|
|
|
static inline void configure_usart2_pins(void)
|
|
{
|
|
at91_set_A_periph(AT91_PIN_PC15, 0); /* RXD2 */
|
|
at91_set_A_periph(AT91_PIN_PC14, 1); /* TXD2 */
|
|
}
|
|
|
|
struct platform_device *at91_uarts[ATMEL_MAX_UART]; /* the UARTs to use */
|
|
struct platform_device *atmel_default_console_device; /* the serial console device */
|
|
|
|
void __init at91_init_serial(struct at91_uart_config *config)
|
|
{
|
|
int i;
|
|
|
|
/* Fill in list of supported UARTs */
|
|
for (i = 0; i < config->nr_tty; i++) {
|
|
switch (config->tty_map[i]) {
|
|
case 0:
|
|
configure_usart0_pins();
|
|
at91_uarts[i] = &at91sam9261_uart0_device;
|
|
at91_clock_associate("usart0_clk", &at91sam9261_uart0_device.dev, "usart");
|
|
break;
|
|
case 1:
|
|
configure_usart1_pins();
|
|
at91_uarts[i] = &at91sam9261_uart1_device;
|
|
at91_clock_associate("usart1_clk", &at91sam9261_uart1_device.dev, "usart");
|
|
break;
|
|
case 2:
|
|
configure_usart2_pins();
|
|
at91_uarts[i] = &at91sam9261_uart2_device;
|
|
at91_clock_associate("usart2_clk", &at91sam9261_uart2_device.dev, "usart");
|
|
break;
|
|
case 3:
|
|
configure_dbgu_pins();
|
|
at91_uarts[i] = &at91sam9261_dbgu_device;
|
|
at91_clock_associate("mck", &at91sam9261_dbgu_device.dev, "usart");
|
|
break;
|
|
default:
|
|
continue;
|
|
}
|
|
at91_uarts[i]->id = i; /* update ID number to mapped ID */
|
|
}
|
|
|
|
/* Set serial console device */
|
|
if (config->console_tty < ATMEL_MAX_UART)
|
|
atmel_default_console_device = at91_uarts[config->console_tty];
|
|
if (!atmel_default_console_device)
|
|
printk(KERN_INFO "AT91: No default serial console defined.\n");
|
|
}
|
|
|
|
void __init at91_add_device_serial(void)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < ATMEL_MAX_UART; i++) {
|
|
if (at91_uarts[i])
|
|
platform_device_register(at91_uarts[i]);
|
|
}
|
|
}
|
|
#else
|
|
void __init at91_init_serial(struct at91_uart_config *config) {}
|
|
void __init at91_add_device_serial(void) {}
|
|
#endif
|
|
|
|
|
|
/* -------------------------------------------------------------------- */
|
|
|
|
/*
|
|
* These devices are always present and don't need any board-specific
|
|
* setup.
|
|
*/
|
|
static int __init at91_add_standard_devices(void)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
arch_initcall(at91_add_standard_devices);
|