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linux/arch/arm/mach-at91/at91sam9rl_devices.c
Haavard Skinnemoen 01d3a5e7fa atmel_lcdfb: don't initialize a pre-allocated framebuffer 
If the user specified a fixed framebuffer address on the command line, it may
have been initialized already with a splash image or something, so we
shouldn't clear it.

Therefore, we should only initialize the framebuffer if we allocated it
ourselves.  This patch also updates the AVR32 setup code to clear the
framebuffer if it allocated it itself, i.e.  the user didn't provide a fixed
address or the reservation failed.

I've updated the at91 platform code as well so that it initializes the
framebuffer if it is located in SRAM, but I haven't tested that it actually
works.

Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
Cc: "Antonino A. Daplas" <adaplas@pol.net>
Cc: Nicolas FERRE <nicolas.ferre@rfo.atmel.com>
Cc: Andrew Victor <andrew@sanpeople.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-28 08:58:38 -07:00

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/*
* Copyright (C) 2007 Atmel Corporation
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file COPYING in the main directory of this archive for
* more details.
*/
#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 <asm/arch/board.h>
#include <asm/arch/gpio.h>
#include <asm/arch/at91sam9rl.h>
#include <asm/arch/at91sam9rl_matrix.h>
#include <asm/arch/at91sam9_smc.h>
#include "generic.h"
/* --------------------------------------------------------------------
* 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 = AT91SAM9RL_BASE_MCI,
.end = AT91SAM9RL_BASE_MCI + SZ_16K - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = AT91SAM9RL_ID_MCI,
.end = AT91SAM9RL_ID_MCI,
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device at91sam9rl_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_A_periph(AT91_PIN_PA2, 0);
/* CMD */
at91_set_A_periph(AT91_PIN_PA1, 1);
/* DAT0, maybe DAT1..DAT3 */
at91_set_A_periph(AT91_PIN_PA0, 1);
if (data->wire4) {
at91_set_A_periph(AT91_PIN_PA3, 1);
at91_set_A_periph(AT91_PIN_PA4, 1);
at91_set_A_periph(AT91_PIN_PA5, 1);
}
mmc_data = *data;
platform_device_register(&at91sam9rl_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[] = {
[0] = {
.start = NAND_BASE,
.end = NAND_BASE + SZ_256M - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = AT91_BASE_SYS + AT91_ECC,
.end = AT91_BASE_SYS + AT91_ECC + SZ_512 - 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;
if (!data)
return;
csa = at91_sys_read(AT91_MATRIX_EBICSA);
at91_sys_write(AT91_MATRIX_EBICSA, csa | AT91_MATRIX_CS3A_SMC_SMARTMEDIA);
/* 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));
at91_sys_write(AT91_SMC_MODE(3), AT91_SMC_DBW_8 | 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_PB4, 0); /* NANDOE */
at91_set_A_periph(AT91_PIN_PB5, 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_PA23,
.sda_is_open_drain = 1,
.scl_pin = AT91_PIN_PA24,
.scl_is_open_drain = 1,
.udelay = 2, /* ~100 kHz */
};
static struct platform_device at91sam9rl_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_PA23, 1); /* TWD (SDA) */
at91_set_multi_drive(AT91_PIN_PA23, 1);
at91_set_GPIO_periph(AT91_PIN_PA24, 1); /* TWCK (SCL) */
at91_set_multi_drive(AT91_PIN_PA24, 1);
i2c_register_board_info(0, devices, nr_devices);
platform_device_register(&at91sam9rl_twi_device);
}
#elif defined(CONFIG_I2C_AT91) || defined(CONFIG_I2C_AT91_MODULE)
static struct resource twi_resources[] = {
[0] = {
.start = AT91SAM9RL_BASE_TWI0,
.end = AT91SAM9RL_BASE_TWI0 + SZ_16K - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = AT91SAM9RL_ID_TWI0,
.end = AT91SAM9RL_ID_TWI0,
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device at91sam9rl_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_PA23, 0); /* TWD */
at91_set_multi_drive(AT91_PIN_PA23, 1);
at91_set_A_periph(AT91_PIN_PA24, 0); /* TWCK */
at91_set_multi_drive(AT91_PIN_PA24, 1);
i2c_register_board_info(0, devices, nr_devices);
platform_device_register(&at91sam9rl_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 spi_resources[] = {
[0] = {
.start = AT91SAM9RL_BASE_SPI,
.end = AT91SAM9RL_BASE_SPI + SZ_16K - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = AT91SAM9RL_ID_SPI,
.end = AT91SAM9RL_ID_SPI,
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device at91sam9rl_spi_device = {
.name = "atmel_spi",
.id = 0,
.dev = {
.dma_mask = &spi_dmamask,
.coherent_dma_mask = DMA_BIT_MASK(32),
},
.resource = spi_resources,
.num_resources = ARRAY_SIZE(spi_resources),
};
static const unsigned spi_standard_cs[4] = { AT91_PIN_PA28, AT91_PIN_PB7, AT91_PIN_PD8, AT91_PIN_PD9 };
void __init at91_add_device_spi(struct spi_board_info *devices, int nr_devices)
{
int i;
unsigned long cs_pin;
at91_set_A_periph(AT91_PIN_PA25, 0); /* MISO */
at91_set_A_periph(AT91_PIN_PA26, 0); /* MOSI */
at91_set_A_periph(AT91_PIN_PA27, 0); /* SPCK */
/* Enable SPI chip-selects */
for (i = 0; i < nr_devices; i++) {
if (devices[i].controller_data)
cs_pin = (unsigned long) devices[i].controller_data;
else
cs_pin = spi_standard_cs[devices[i].chip_select];
/* 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);
platform_device_register(&at91sam9rl_spi_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 = AT91SAM9RL_LCDC_BASE,
.end = AT91SAM9RL_LCDC_BASE + SZ_4K - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = AT91SAM9RL_ID_LCDC,
.end = AT91SAM9RL_ID_LCDC,
.flags = IORESOURCE_IRQ,
},
#if defined(CONFIG_FB_INTSRAM)
[2] = {
.start = AT91SAM9RL_SRAM_BASE,
.end = AT91SAM9RL_SRAM_BASE + AT91SAM9RL_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;
}
at91_set_B_periph(AT91_PIN_PC1, 0); /* LCDPWR */
at91_set_A_periph(AT91_PIN_PC5, 0); /* LCDHSYNC */
at91_set_A_periph(AT91_PIN_PC6, 0); /* LCDDOTCK */
at91_set_A_periph(AT91_PIN_PC7, 0); /* LCDDEN */
at91_set_A_periph(AT91_PIN_PC3, 0); /* LCDCC */
at91_set_B_periph(AT91_PIN_PC9, 0); /* LCDD3 */
at91_set_B_periph(AT91_PIN_PC10, 0); /* LCDD4 */
at91_set_B_periph(AT91_PIN_PC11, 0); /* LCDD5 */
at91_set_B_periph(AT91_PIN_PC12, 0); /* LCDD6 */
at91_set_B_periph(AT91_PIN_PC13, 0); /* LCDD7 */
at91_set_B_periph(AT91_PIN_PC15, 0); /* LCDD11 */
at91_set_B_periph(AT91_PIN_PC16, 0); /* LCDD12 */
at91_set_B_periph(AT91_PIN_PC17, 0); /* LCDD13 */
at91_set_B_periph(AT91_PIN_PC18, 0); /* LCDD14 */
at91_set_B_periph(AT91_PIN_PC19, 0); /* LCDD15 */
at91_set_B_periph(AT91_PIN_PC20, 0); /* LCDD18 */
at91_set_B_periph(AT91_PIN_PC21, 0); /* LCDD19 */
at91_set_B_periph(AT91_PIN_PC22, 0); /* LCDD20 */
at91_set_B_periph(AT91_PIN_PC23, 0); /* LCDD21 */
at91_set_B_periph(AT91_PIN_PC24, 0); /* LCDD22 */
at91_set_B_periph(AT91_PIN_PC25, 0); /* LCDD23 */
#ifdef CONFIG_FB_INTSRAM
{
void __iomem *fb;
struct resource *fb_res = &lcdc_resources[2];
size_t fb_len = fb_res->end - fb_res->start + 1;
fb = ioremap_writecombine(fb_res->start, fb_len);
if (fb) {
memset(fb, 0, fb_len);
iounmap(fb, fb_len);
}
}
#endif
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 = AT91SAM9RL_BASE_TCB0,
.end = AT91SAM9RL_BASE_TCB0 + SZ_16K - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = AT91SAM9RL_ID_TC0,
.end = AT91SAM9RL_ID_TC0,
.flags = IORESOURCE_IRQ,
},
[2] = {
.start = AT91SAM9RL_ID_TC1,
.end = AT91SAM9RL_ID_TC1,
.flags = IORESOURCE_IRQ,
},
[3] = {
.start = AT91SAM9RL_ID_TC2,
.end = AT91SAM9RL_ID_TC2,
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device at91sam9rl_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", &at91sam9rl_tcb_device.dev, "t0_clk");
at91_clock_associate("tc1_clk", &at91sam9rl_tcb_device.dev, "t1_clk");
at91_clock_associate("tc2_clk", &at91sam9rl_tcb_device.dev, "t2_clk");
platform_device_register(&at91sam9rl_tcb_device);
}
#else
static void __init at91_add_device_tc(void) { }
#endif
/* --------------------------------------------------------------------
* RTC
* -------------------------------------------------------------------- */
#if defined(CONFIG_RTC_DRV_AT91RM9200) || defined(CONFIG_RTC_DRV_AT91RM9200_MODULE)
static struct platform_device at91sam9rl_rtc_device = {
.name = "at91_rtc",
.id = -1,
.num_resources = 0,
};
static void __init at91_add_device_rtc(void)
{
platform_device_register(&at91sam9rl_rtc_device);
}
#else
static void __init at91_add_device_rtc(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 at91sam9rl_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(&at91sam9rl_rtt_device);
}
/* --------------------------------------------------------------------
* Watchdog
* -------------------------------------------------------------------- */
#if defined(CONFIG_AT91SAM9_WATCHDOG) || defined(CONFIG_AT91SAM9_WATCHDOG_MODULE)
static struct platform_device at91sam9rl_wdt_device = {
.name = "at91_wdt",
.id = -1,
.num_resources = 0,
};
static void __init at91_add_device_watchdog(void)
{
platform_device_register(&at91sam9rl_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 = AT91SAM9RL_BASE_SSC0,
.end = AT91SAM9RL_BASE_SSC0 + SZ_16K - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = AT91SAM9RL_ID_SSC0,
.end = AT91SAM9RL_ID_SSC0,
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device at91sam9rl_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_PC0, 1);
if (pins & ATMEL_SSC_TK)
at91_set_A_periph(AT91_PIN_PC1, 1);
if (pins & ATMEL_SSC_TD)
at91_set_A_periph(AT91_PIN_PA15, 1);
if (pins & ATMEL_SSC_RD)
at91_set_A_periph(AT91_PIN_PA16, 1);
if (pins & ATMEL_SSC_RK)
at91_set_B_periph(AT91_PIN_PA10, 1);
if (pins & ATMEL_SSC_RF)
at91_set_B_periph(AT91_PIN_PA22, 1);
}
static u64 ssc1_dmamask = DMA_BIT_MASK(32);
static struct resource ssc1_resources[] = {
[0] = {
.start = AT91SAM9RL_BASE_SSC1,
.end = AT91SAM9RL_BASE_SSC1 + SZ_16K - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = AT91SAM9RL_ID_SSC1,
.end = AT91SAM9RL_ID_SSC1,
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device at91sam9rl_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_PA29, 1);
if (pins & ATMEL_SSC_TK)
at91_set_B_periph(AT91_PIN_PA30, 1);
if (pins & ATMEL_SSC_TD)
at91_set_B_periph(AT91_PIN_PA13, 1);
if (pins & ATMEL_SSC_RD)
at91_set_B_periph(AT91_PIN_PA14, 1);
if (pins & ATMEL_SSC_RK)
at91_set_B_periph(AT91_PIN_PA9, 1);
if (pins & ATMEL_SSC_RF)
at91_set_B_periph(AT91_PIN_PA8, 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 AT91SAM9RL_ID_SSC0:
pdev = &at91sam9rl_ssc0_device;
configure_ssc0_pins(pins);
at91_clock_associate("ssc0_clk", &pdev->dev, "pclk");
break;
case AT91SAM9RL_ID_SSC1:
pdev = &at91sam9rl_ssc1_device;
configure_ssc1_pins(pins);
at91_clock_associate("ssc1_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 at91sam9rl_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_PA21, 0); /* DRXD */
at91_set_A_periph(AT91_PIN_PA22, 1); /* DTXD */
}
static struct resource uart0_resources[] = {
[0] = {
.start = AT91SAM9RL_BASE_US0,
.end = AT91SAM9RL_BASE_US0 + SZ_16K - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = AT91SAM9RL_ID_US0,
.end = AT91SAM9RL_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 at91sam9rl_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_PA6, 1); /* TXD0 */
at91_set_A_periph(AT91_PIN_PA7, 0); /* RXD0 */
if (pins & ATMEL_UART_RTS)
at91_set_A_periph(AT91_PIN_PA9, 0); /* RTS0 */
if (pins & ATMEL_UART_CTS)
at91_set_A_periph(AT91_PIN_PA10, 0); /* CTS0 */
if (pins & ATMEL_UART_DSR)
at91_set_A_periph(AT91_PIN_PD14, 0); /* DSR0 */
if (pins & ATMEL_UART_DTR)
at91_set_A_periph(AT91_PIN_PD15, 0); /* DTR0 */
if (pins & ATMEL_UART_DCD)
at91_set_A_periph(AT91_PIN_PD16, 0); /* DCD0 */
if (pins & ATMEL_UART_RI)
at91_set_A_periph(AT91_PIN_PD17, 0); /* RI0 */
}
static struct resource uart1_resources[] = {
[0] = {
.start = AT91SAM9RL_BASE_US1,
.end = AT91SAM9RL_BASE_US1 + SZ_16K - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = AT91SAM9RL_ID_US1,
.end = AT91SAM9RL_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 at91sam9rl_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_PA11, 1); /* TXD1 */
at91_set_A_periph(AT91_PIN_PA12, 0); /* RXD1 */
if (pins & ATMEL_UART_RTS)
at91_set_B_periph(AT91_PIN_PA18, 0); /* RTS1 */
if (pins & ATMEL_UART_CTS)
at91_set_B_periph(AT91_PIN_PA19, 0); /* CTS1 */
}
static struct resource uart2_resources[] = {
[0] = {
.start = AT91SAM9RL_BASE_US2,
.end = AT91SAM9RL_BASE_US2 + SZ_16K - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = AT91SAM9RL_ID_US2,
.end = AT91SAM9RL_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 at91sam9rl_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_PA13, 1); /* TXD2 */
at91_set_A_periph(AT91_PIN_PA14, 0); /* RXD2 */
if (pins & ATMEL_UART_RTS)
at91_set_A_periph(AT91_PIN_PA29, 0); /* RTS2 */
if (pins & ATMEL_UART_CTS)
at91_set_A_periph(AT91_PIN_PA30, 0); /* CTS2 */
}
static struct resource uart3_resources[] = {
[0] = {
.start = AT91SAM9RL_BASE_US3,
.end = AT91SAM9RL_BASE_US3 + SZ_16K - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = AT91SAM9RL_ID_US3,
.end = AT91SAM9RL_ID_US3,
.flags = IORESOURCE_IRQ,
},
};
static struct atmel_uart_data uart3_data = {
.use_dma_tx = 1,
.use_dma_rx = 1,
};
static u64 uart3_dmamask = DMA_BIT_MASK(32);
static struct platform_device at91sam9rl_uart3_device = {
.name = "atmel_usart",
.id = 4,
.dev = {
.dma_mask = &uart3_dmamask,
.coherent_dma_mask = DMA_BIT_MASK(32),
.platform_data = &uart3_data,
},
.resource = uart3_resources,
.num_resources = ARRAY_SIZE(uart3_resources),
};
static inline void configure_usart3_pins(unsigned pins)
{
at91_set_A_periph(AT91_PIN_PB0, 1); /* TXD3 */
at91_set_A_periph(AT91_PIN_PB1, 0); /* RXD3 */
if (pins & ATMEL_UART_RTS)
at91_set_B_periph(AT91_PIN_PD4, 0); /* RTS3 */
if (pins & ATMEL_UART_CTS)
at91_set_B_periph(AT91_PIN_PD3, 0); /* CTS3 */
}
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 = &at91sam9rl_dbgu_device;
configure_dbgu_pins();
at91_clock_associate("mck", &pdev->dev, "usart");
break;
case AT91SAM9RL_ID_US0:
pdev = &at91sam9rl_uart0_device;
configure_usart0_pins(pins);
at91_clock_associate("usart0_clk", &pdev->dev, "usart");
break;
case AT91SAM9RL_ID_US1:
pdev = &at91sam9rl_uart1_device;
configure_usart1_pins(pins);
at91_clock_associate("usart1_clk", &pdev->dev, "usart");
break;
case AT91SAM9RL_ID_US2:
pdev = &at91sam9rl_uart2_device;
configure_usart2_pins(pins);
at91_clock_associate("usart2_clk", &pdev->dev, "usart");
break;
case AT91SAM9RL_ID_US3:
pdev = &at91sam9rl_uart3_device;
configure_usart3_pins(pins);
at91_clock_associate("usart3_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_rtc();
at91_add_device_rtt();
at91_add_device_watchdog();
at91_add_device_tc();
return 0;
}
arch_initcall(at91_add_standard_devices);
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