leandrof/linux
1
0
Fork 0
forked from Minki/linux
Code Issues Pull Requests Packages Projects Releases Wiki Activity
d074b104ce
linux/arch/arm/mach-at91/at91sam9261_devices.c
Andrew Victor 2af29b7861 [ARM] 5390/1: AT91: Watchdog fixes 
The recently merged AT91SAM9 watchdog driver uses the
AT91SAM9X_WATCHDOG config variable, whereas the original version of
the driver (and the platform support code) used AT91SAM9_WATCHDOG.
This causes the watchdog platform_device to never be registered, and
therefore the driver not to be initialized.

This patch:
- updates the platform support code to use AT91SAM9X_WATCHDOG.
- includes <linux/io.h> to fix compile error (same fix as was applied
to at91rm9200_wdt.c)
- fixes comment regarding watchdog clock-rates in at91rm9200.

Signed-off-by: Andrew Victor <linux@maxim.org.za>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-02-14 16:01:57 +00:00

1063 lines
27 KiB
C
Raw Blame History

/*
* 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/dma-mapping.h>
#include <linux/platform_device.h>
#include <linux/i2c-gpio.h>
#include <linux/fb.h>
#include <video/atmel_lcdc.h>
#include <mach/board.h>
#include <mach/gpio.h>
#include <mach/at91sam9261.h>
#include <mach/at91sam9261_matrix.h>
#include <mach/at91sam9_smc.h>
#include "generic.h"
/* --------------------------------------------------------------------
* USB Host
* -------------------------------------------------------------------- */
#if defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE)
static u64 ohci_dmamask = DMA_BIT_MASK(32);
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 = DMA_BIT_MASK(32),
.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)
{
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 by USB device peripheral */
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 = DMA_BIT_MASK(32);
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 = DMA_BIT_MASK(32),
.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_ATMEL) || defined(CONFIG_MTD_NAND_ATMEL_MODULE)
static struct atmel_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 atmel_nand_device = {
.name = "atmel_nand",
.id = -1,
.dev = {
.platform_data = &nand_data,
},
.resource = nand_resources,
.num_resources = ARRAY_SIZE(nand_resources),
};
void __init at91_add_device_nand(struct atmel_nand_data *data)
{
unsigned long csa;
if (!data)
return;
csa = at91_sys_read(AT91_MATRIX_EBICSA);
at91_sys_write(AT91_MATRIX_EBICSA, csa | AT91_MATRIX_CS3A_SMC_SMARTMEDIA);
/* 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(&atmel_nand_device);
}
#else
void __init at91_add_device_nand(struct atmel_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 = DMA_BIT_MASK(32);
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 = DMA_BIT_MASK(32),
},
.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 = DMA_BIT_MASK(32),
},
.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 = DMA_BIT_MASK(32);
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 = DMA_BIT_MASK(32),
.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;
}
#if defined(CONFIG_FB_ATMEL_STN)
at91_set_A_periph(AT91_PIN_PB0, 0); /* LCDVSYNC */
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_PB5, 0); /* LCDD0 */
at91_set_A_periph(AT91_PIN_PB6, 0); /* LCDD1 */
at91_set_A_periph(AT91_PIN_PB7, 0); /* LCDD2 */
at91_set_A_periph(AT91_PIN_PB8, 0); /* LCDD3 */
#else
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 */
#endif
if (ARRAY_SIZE(lcdc_resources) > 2) {
void __iomem *fb;
struct resource *fb_res = &lcdc_resources[2];
size_t fb_len = fb_res->end - fb_res->start + 1;
fb = ioremap(fb_res->start, fb_len);
if (fb) {
memset(fb, 0, fb_len);
iounmap(fb);
}
}
lcdc_data = *data;
platform_device_register(&at91_lcdc_device);
}
#else
void __init at91_add_device_lcdc(struct atmel_lcdfb_info *data) {}
#endif
/* --------------------------------------------------------------------
* Timer/Counter block
* -------------------------------------------------------------------- */
#ifdef CONFIG_ATMEL_TCLIB
static struct resource tcb_resources[] = {
[0] = {
.start = AT91SAM9261_BASE_TCB0,
.end = AT91SAM9261_BASE_TCB0 + SZ_16K - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = AT91SAM9261_ID_TC0,
.end = AT91SAM9261_ID_TC0,
.flags = IORESOURCE_IRQ,
},
[2] = {
.start = AT91SAM9261_ID_TC1,
.end = AT91SAM9261_ID_TC1,
.flags = IORESOURCE_IRQ,
},
[3] = {
.start = AT91SAM9261_ID_TC2,
.end = AT91SAM9261_ID_TC2,
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device at91sam9261_tcb_device = {
.name = "atmel_tcb",
.id = 0,
.resource = tcb_resources,
.num_resources = ARRAY_SIZE(tcb_resources),
};
static void __init at91_add_device_tc(void)
{
/* this chip has a separate clock and irq for each TC channel */
at91_clock_associate("tc0_clk", &at91sam9261_tcb_device.dev, "t0_clk");
at91_clock_associate("tc1_clk", &at91sam9261_tcb_device.dev, "t1_clk");
at91_clock_associate("tc2_clk", &at91sam9261_tcb_device.dev, "t2_clk");
platform_device_register(&at91sam9261_tcb_device);
}
#else
static void __init at91_add_device_tc(void) { }
#endif
/* --------------------------------------------------------------------
* RTT
* -------------------------------------------------------------------- */
static struct resource rtt_resources[] = {
{
.start = AT91_BASE_SYS + AT91_RTT,
.end = AT91_BASE_SYS + AT91_RTT + SZ_16 - 1,
.flags = IORESOURCE_MEM,
}
};
static struct platform_device at91sam9261_rtt_device = {
.name = "at91_rtt",
.id = 0,
.resource = rtt_resources,
.num_resources = ARRAY_SIZE(rtt_resources),
};
static void __init at91_add_device_rtt(void)
{
platform_device_register(&at91sam9261_rtt_device);
}
/* --------------------------------------------------------------------
* Watchdog
* -------------------------------------------------------------------- */
#if defined(CONFIG_AT91SAM9X_WATCHDOG) || defined(CONFIG_AT91SAM9X_WATCHDOG_MODULE)
static struct platform_device at91sam9261_wdt_device = {
.name = "at91_wdt",
.id = -1,
.num_resources = 0,
};
static void __init at91_add_device_watchdog(void)
{
platform_device_register(&at91sam9261_wdt_device);
}
#else
static void __init at91_add_device_watchdog(void) {}
#endif
/* --------------------------------------------------------------------
* SSC -- Synchronous Serial Controller
* -------------------------------------------------------------------- */
#if defined(CONFIG_ATMEL_SSC) || defined(CONFIG_ATMEL_SSC_MODULE)
static u64 ssc0_dmamask = DMA_BIT_MASK(32);
static struct resource ssc0_resources[] = {
[0] = {
.start = AT91SAM9261_BASE_SSC0,
.end = AT91SAM9261_BASE_SSC0 + SZ_16K - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = AT91SAM9261_ID_SSC0,
.end = AT91SAM9261_ID_SSC0,
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device at91sam9261_ssc0_device = {
.name = "ssc",
.id = 0,
.dev = {
.dma_mask = &ssc0_dmamask,
.coherent_dma_mask = DMA_BIT_MASK(32),
},
.resource = ssc0_resources,
.num_resources = ARRAY_SIZE(ssc0_resources),
};
static inline void configure_ssc0_pins(unsigned pins)
{
if (pins & ATMEL_SSC_TF)
at91_set_A_periph(AT91_PIN_PB21, 1);
if (pins & ATMEL_SSC_TK)
at91_set_A_periph(AT91_PIN_PB22, 1);
if (pins & ATMEL_SSC_TD)
at91_set_A_periph(AT91_PIN_PB23, 1);
if (pins & ATMEL_SSC_RD)
at91_set_A_periph(AT91_PIN_PB24, 1);
if (pins & ATMEL_SSC_RK)
at91_set_A_periph(AT91_PIN_PB25, 1);
if (pins & ATMEL_SSC_RF)
at91_set_A_periph(AT91_PIN_PB26, 1);
}
static u64 ssc1_dmamask = DMA_BIT_MASK(32);
static struct resource ssc1_resources[] = {
[0] = {
.start = AT91SAM9261_BASE_SSC1,
.end = AT91SAM9261_BASE_SSC1 + SZ_16K - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = AT91SAM9261_ID_SSC1,
.end = AT91SAM9261_ID_SSC1,
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device at91sam9261_ssc1_device = {
.name = "ssc",
.id = 1,
.dev = {
.dma_mask = &ssc1_dmamask,
.coherent_dma_mask = DMA_BIT_MASK(32),
},
.resource = ssc1_resources,
.num_resources = ARRAY_SIZE(ssc1_resources),
};
static inline void configure_ssc1_pins(unsigned pins)
{
if (pins & ATMEL_SSC_TF)
at91_set_B_periph(AT91_PIN_PA17, 1);
if (pins & ATMEL_SSC_TK)
at91_set_B_periph(AT91_PIN_PA18, 1);
if (pins & ATMEL_SSC_TD)
at91_set_B_periph(AT91_PIN_PA19, 1);
if (pins & ATMEL_SSC_RD)
at91_set_B_periph(AT91_PIN_PA20, 1);
if (pins & ATMEL_SSC_RK)
at91_set_B_periph(AT91_PIN_PA21, 1);
if (pins & ATMEL_SSC_RF)
at91_set_B_periph(AT91_PIN_PA22, 1);
}
static u64 ssc2_dmamask = DMA_BIT_MASK(32);
static struct resource ssc2_resources[] = {
[0] = {
.start = AT91SAM9261_BASE_SSC2,
.end = AT91SAM9261_BASE_SSC2 + SZ_16K - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = AT91SAM9261_ID_SSC2,
.end = AT91SAM9261_ID_SSC2,
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device at91sam9261_ssc2_device = {
.name = "ssc",
.id = 2,
.dev = {
.dma_mask = &ssc2_dmamask,
.coherent_dma_mask = DMA_BIT_MASK(32),
},
.resource = ssc2_resources,
.num_resources = ARRAY_SIZE(ssc2_resources),
};
static inline void configure_ssc2_pins(unsigned pins)
{
if (pins & ATMEL_SSC_TF)
at91_set_B_periph(AT91_PIN_PC25, 1);
if (pins & ATMEL_SSC_TK)
at91_set_B_periph(AT91_PIN_PC26, 1);
if (pins & ATMEL_SSC_TD)
at91_set_B_periph(AT91_PIN_PC27, 1);
if (pins & ATMEL_SSC_RD)
at91_set_B_periph(AT91_PIN_PC28, 1);
if (pins & ATMEL_SSC_RK)
at91_set_B_periph(AT91_PIN_PC29, 1);
if (pins & ATMEL_SSC_RF)
at91_set_B_periph(AT91_PIN_PC30, 1);
}
/*
* SSC controllers are accessed through library code, instead of any
* kind of all-singing/all-dancing driver. For example one could be
* used by a particular I2S audio codec's driver, while another one
* on the same system might be used by a custom data capture driver.
*/
void __init at91_add_device_ssc(unsigned id, unsigned pins)
{
struct platform_device *pdev;
/*
* NOTE: caller is responsible for passing information matching
* "pins" to whatever will be using each particular controller.
*/
switch (id) {
case AT91SAM9261_ID_SSC0:
pdev = &at91sam9261_ssc0_device;
configure_ssc0_pins(pins);
at91_clock_associate("ssc0_clk", &pdev->dev, "pclk");
break;
case AT91SAM9261_ID_SSC1:
pdev = &at91sam9261_ssc1_device;
configure_ssc1_pins(pins);
at91_clock_associate("ssc1_clk", &pdev->dev, "pclk");
break;
case AT91SAM9261_ID_SSC2:
pdev = &at91sam9261_ssc2_device;
configure_ssc2_pins(pins);
at91_clock_associate("ssc2_clk", &pdev->dev, "pclk");
break;
default:
return;
}
platform_device_register(pdev);
}
#else
void __init at91_add_device_ssc(unsigned id, unsigned pins) {}
#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 u64 dbgu_dmamask = DMA_BIT_MASK(32);
static struct platform_device at91sam9261_dbgu_device = {
.name = "atmel_usart",
.id = 0,
.dev = {
.dma_mask = &dbgu_dmamask,
.coherent_dma_mask = DMA_BIT_MASK(32),
.platform_data = &dbgu_data,
},
.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 u64 uart0_dmamask = DMA_BIT_MASK(32);
static struct platform_device at91sam9261_uart0_device = {
.name = "atmel_usart",
.id = 1,
.dev = {
.dma_mask = &uart0_dmamask,
.coherent_dma_mask = DMA_BIT_MASK(32),
.platform_data = &uart0_data,
},
.resource = uart0_resources,
.num_resources = ARRAY_SIZE(uart0_resources),
};
static inline void configure_usart0_pins(unsigned pins)
{
at91_set_A_periph(AT91_PIN_PC8, 1); /* TXD0 */
at91_set_A_periph(AT91_PIN_PC9, 0); /* RXD0 */
if (pins & ATMEL_UART_RTS)
at91_set_A_periph(AT91_PIN_PC10, 0); /* RTS0 */
if (pins & ATMEL_UART_CTS)
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 u64 uart1_dmamask = DMA_BIT_MASK(32);
static struct platform_device at91sam9261_uart1_device = {
.name = "atmel_usart",
.id = 2,
.dev = {
.dma_mask = &uart1_dmamask,
.coherent_dma_mask = DMA_BIT_MASK(32),
.platform_data = &uart1_data,
},
.resource = uart1_resources,
.num_resources = ARRAY_SIZE(uart1_resources),
};
static inline void configure_usart1_pins(unsigned pins)
{
at91_set_A_periph(AT91_PIN_PC12, 1); /* TXD1 */
at91_set_A_periph(AT91_PIN_PC13, 0); /* RXD1 */
if (pins & ATMEL_UART_RTS)
at91_set_B_periph(AT91_PIN_PA12, 0); /* RTS1 */
if (pins & ATMEL_UART_CTS)
at91_set_B_periph(AT91_PIN_PA13, 0); /* CTS1 */
}
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 u64 uart2_dmamask = DMA_BIT_MASK(32);
static struct platform_device at91sam9261_uart2_device = {
.name = "atmel_usart",
.id = 3,
.dev = {
.dma_mask = &uart2_dmamask,
.coherent_dma_mask = DMA_BIT_MASK(32),
.platform_data = &uart2_data,
},
.resource = uart2_resources,
.num_resources = ARRAY_SIZE(uart2_resources),
};
static inline void configure_usart2_pins(unsigned pins)
{
at91_set_A_periph(AT91_PIN_PC15, 0); /* RXD2 */
at91_set_A_periph(AT91_PIN_PC14, 1); /* TXD2 */
if (pins & ATMEL_UART_RTS)
at91_set_B_periph(AT91_PIN_PA15, 0); /* RTS2*/
if (pins & ATMEL_UART_CTS)
at91_set_B_periph(AT91_PIN_PA16, 0); /* CTS2 */
}
static struct platform_device *__initdata at91_uarts[ATMEL_MAX_UART]; /* the UARTs to use */
struct platform_device *atmel_default_console_device; /* the serial console device */
void __init at91_register_uart(unsigned id, unsigned portnr, unsigned pins)
{
struct platform_device *pdev;
switch (id) {
case 0: /* DBGU */
pdev = &at91sam9261_dbgu_device;
configure_dbgu_pins();
at91_clock_associate("mck", &pdev->dev, "usart");
break;
case AT91SAM9261_ID_US0:
pdev = &at91sam9261_uart0_device;
configure_usart0_pins(pins);
at91_clock_associate("usart0_clk", &pdev->dev, "usart");
break;
case AT91SAM9261_ID_US1:
pdev = &at91sam9261_uart1_device;
configure_usart1_pins(pins);
at91_clock_associate("usart1_clk", &pdev->dev, "usart");
break;
case AT91SAM9261_ID_US2:
pdev = &at91sam9261_uart2_device;
configure_usart2_pins(pins);
at91_clock_associate("usart2_clk", &pdev->dev, "usart");
break;
default:
return;
}
pdev->id = portnr; /* update to mapped ID */
if (portnr < ATMEL_MAX_UART)
at91_uarts[portnr] = pdev;
}
void __init at91_set_serial_console(unsigned portnr)
{
if (portnr < ATMEL_MAX_UART)
atmel_default_console_device = at91_uarts[portnr];
}
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]);
}
if (!atmel_default_console_device)
printk(KERN_INFO "AT91: No default serial console defined.\n");
}
#else
void __init at91_register_uart(unsigned id, unsigned portnr, unsigned pins) {}
void __init at91_set_serial_console(unsigned portnr) {}
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)
{
at91_add_device_rtt();
at91_add_device_watchdog();
at91_add_device_tc();
return 0;
}
arch_initcall(at91_add_standard_devices);
Reference in New Issue View Git Blame Copy Permalink