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linux/arch/arm/mach-at91/at91sam9260_devices.c
Linus Torvalds dfc25e4503 ARM: SoC: cleanups for 3.15 
These cleanup patches are mainly move stuff around and should all
 be harmless. They are mainly split out so that other branches can
 be based on top to avoid conflicts.
 
 Notable changes are:
 
 * We finally remove all mach/timex.h, after CLOCK_TICK_RATE is no
   longer used. (Uwe Kleine-König)
 * The Qualcomm MSM platform is split out into legacy mach-msm and
   new-style mach-qcom, to allow easier maintainance of the new
   hardware support without regressions. (Kumar Gala)
 * A rework of some of the Kconfig logic to simplify multiplatform
   support (Rob Herring)
 * Samsung Exynos gets closer to supporting multiplatform (Sachin
   Kamat and others)
 * mach-bcm3528 gets merged into mach-bcm (Stephen Warren)
 * at91 gains some common clock framework support (Alexandre Belloni,
   Jean-Jacques Hiblot and other French people).
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Merge tag 'cleanup-3.15' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC cleanups from Arnd Bergmann:
 "These cleanup patches are mainly move stuff around and should all be
  harmless.  They are mainly split out so that other branches can be
  based on top to avoid conflicts.

  Notable changes are:

   - We finally remove all mach/timex.h, after CLOCK_TICK_RATE is no
     longer used (Uwe Kleine-König)
   - The Qualcomm MSM platform is split out into legacy mach-msm and
     new-style mach-qcom, to allow easier maintainance of the new
     hardware support without regressions (Kumar Gala)
   - A rework of some of the Kconfig logic to simplify multiplatform
     support (Rob Herring)
   - Samsung Exynos gets closer to supporting multiplatform (Sachin
     Kamat and others)
   - mach-bcm3528 gets merged into mach-bcm (Stephen Warren)
   - at91 gains some common clock framework support (Alexandre Belloni,
     Jean-Jacques Hiblot and other French people)"

* tag 'cleanup-3.15' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (89 commits)
  ARM: hisi: select HAVE_ARM_SCU only for SMP
  ARM: efm32: allow uncompress debug output
  ARM: prima2: build reset code standalone
  ARM: at91: add PWM clock
  ARM: at91: move sam9261 SoC to common clk
  ARM: at91: prepare common clk transition for sam9261 SoC
  ARM: at91: updated the at91_dt_defconfig with support for the ADS7846
  ARM: at91: dt: sam9261: Device Tree support for the at91sam9261ek
  ARM: at91: dt: defconfig: Added the sam9261 to the list of DT-enabled SOCs
  ARM: at91: dt: Add at91sam9261 dt SoC support
  ARM: at91: switch sam9rl to common clock framework
  ARM: at91/dt: define main clk frequency of at91sam9rlek
  ARM: at91/dt: define at91sam9rl clocks
  ARM: at91: prepare common clk transition for sam9rl SoCs
  ARM: at91: prepare sam9 dt boards transition to common clk
  ARM: at91: dt: sam9rl: Device Tree for the at91sam9rlek
  ARM: at91/defconfig: Add the sam9rl to the list of DT-enabled SOCs
  ARM: at91: Add at91sam9rl DT SoC support
  ARM: at91: prepare at91sam9rl DT transition
  ARM: at91/defconfig: refresh at91sam9260_9g20_defconfig
  ...
2014-04-05 13:51:19 -07:00

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/*
* arch/arm/mach-at91/at91sam9260_devices.c
*
* Copyright (C) 2006 Atmel
*
* 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/gpio.h>
#include <linux/platform_device.h>
#include <linux/i2c-gpio.h>
#include <linux/platform_data/at91_adc.h>
#include <mach/cpu.h>
#include <mach/at91sam9260.h>
#include <mach/at91sam9260_matrix.h>
#include <mach/at91_matrix.h>
#include <mach/at91sam9_smc.h>
#include <mach/at91_adc.h>
#include <mach/hardware.h>
#include "board.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 = AT91SAM9260_UHP_BASE,
.end = AT91SAM9260_UHP_BASE + SZ_1M - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = NR_IRQS_LEGACY + AT91SAM9260_ID_UHP,
.end = NR_IRQS_LEGACY + AT91SAM9260_ID_UHP,
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device at91_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)
{
int i;
if (!data)
return;
/* Enable overcurrent notification */
for (i = 0; i < data->ports; i++) {
if (gpio_is_valid(data->overcurrent_pin[i]))
at91_set_gpio_input(data->overcurrent_pin[i], 1);
}
usbh_data = *data;
platform_device_register(&at91_usbh_device);
}
#else
void __init at91_add_device_usbh(struct at91_usbh_data *data) {}
#endif
/* --------------------------------------------------------------------
* USB Device (Gadget)
* -------------------------------------------------------------------- */
#if defined(CONFIG_USB_AT91) || defined(CONFIG_USB_AT91_MODULE)
static struct at91_udc_data udc_data;
static struct resource udc_resources[] = {
[0] = {
.start = AT91SAM9260_BASE_UDP,
.end = AT91SAM9260_BASE_UDP + SZ_16K - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = NR_IRQS_LEGACY + AT91SAM9260_ID_UDP,
.end = NR_IRQS_LEGACY + AT91SAM9260_ID_UDP,
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device at91_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 (gpio_is_valid(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(&at91_udc_device);
}
#else
void __init at91_add_device_udc(struct at91_udc_data *data) {}
#endif
/* --------------------------------------------------------------------
* Ethernet
* -------------------------------------------------------------------- */
#if defined(CONFIG_MACB) || defined(CONFIG_MACB_MODULE)
static u64 eth_dmamask = DMA_BIT_MASK(32);
static struct macb_platform_data eth_data;
static struct resource eth_resources[] = {
[0] = {
.start = AT91SAM9260_BASE_EMAC,
.end = AT91SAM9260_BASE_EMAC + SZ_16K - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = NR_IRQS_LEGACY + AT91SAM9260_ID_EMAC,
.end = NR_IRQS_LEGACY + AT91SAM9260_ID_EMAC,
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device at91sam9260_eth_device = {
.name = "macb",
.id = -1,
.dev = {
.dma_mask = &eth_dmamask,
.coherent_dma_mask = DMA_BIT_MASK(32),
.platform_data = &eth_data,
},
.resource = eth_resources,
.num_resources = ARRAY_SIZE(eth_resources),
};
void __init at91_add_device_eth(struct macb_platform_data *data)
{
if (!data)
return;
if (gpio_is_valid(data->phy_irq_pin)) {
at91_set_gpio_input(data->phy_irq_pin, 0);
at91_set_deglitch(data->phy_irq_pin, 1);
}
/* Pins used for MII and RMII */
at91_set_A_periph(AT91_PIN_PA19, 0); /* ETXCK_EREFCK */
at91_set_A_periph(AT91_PIN_PA17, 0); /* ERXDV */
at91_set_A_periph(AT91_PIN_PA14, 0); /* ERX0 */
at91_set_A_periph(AT91_PIN_PA15, 0); /* ERX1 */
at91_set_A_periph(AT91_PIN_PA18, 0); /* ERXER */
at91_set_A_periph(AT91_PIN_PA16, 0); /* ETXEN */
at91_set_A_periph(AT91_PIN_PA12, 0); /* ETX0 */
at91_set_A_periph(AT91_PIN_PA13, 0); /* ETX1 */
at91_set_A_periph(AT91_PIN_PA21, 0); /* EMDIO */
at91_set_A_periph(AT91_PIN_PA20, 0); /* EMDC */
if (!data->is_rmii) {
at91_set_B_periph(AT91_PIN_PA28, 0); /* ECRS */
at91_set_B_periph(AT91_PIN_PA29, 0); /* ECOL */
at91_set_B_periph(AT91_PIN_PA25, 0); /* ERX2 */
at91_set_B_periph(AT91_PIN_PA26, 0); /* ERX3 */
at91_set_B_periph(AT91_PIN_PA27, 0); /* ERXCK */
at91_set_B_periph(AT91_PIN_PA23, 0); /* ETX2 */
at91_set_B_periph(AT91_PIN_PA24, 0); /* ETX3 */
at91_set_B_periph(AT91_PIN_PA22, 0); /* ETXER */
}
eth_data = *data;
platform_device_register(&at91sam9260_eth_device);
}
#else
void __init at91_add_device_eth(struct macb_platform_data *data) {}
#endif
/* --------------------------------------------------------------------
* MMC / SD Slot for Atmel MCI Driver
* -------------------------------------------------------------------- */
#if IS_ENABLED(CONFIG_MMC_ATMELMCI)
static u64 mmc_dmamask = DMA_BIT_MASK(32);
static struct mci_platform_data mmc_data;
static struct resource mmc_resources[] = {
[0] = {
.start = AT91SAM9260_BASE_MCI,
.end = AT91SAM9260_BASE_MCI + SZ_16K - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = NR_IRQS_LEGACY + AT91SAM9260_ID_MCI,
.end = NR_IRQS_LEGACY + AT91SAM9260_ID_MCI,
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device at91sam9260_mmc_device = {
.name = "atmel_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_mci(short mmc_id, struct mci_platform_data *data)
{
unsigned int i;
unsigned int slot_count = 0;
if (!data)
return;
for (i = 0; i < ATMCI_MAX_NR_SLOTS; i++) {
if (data->slot[i].bus_width) {
/* input/irq */
if (gpio_is_valid(data->slot[i].detect_pin)) {
at91_set_gpio_input(data->slot[i].detect_pin, 1);
at91_set_deglitch(data->slot[i].detect_pin, 1);
}
if (gpio_is_valid(data->slot[i].wp_pin))
at91_set_gpio_input(data->slot[i].wp_pin, 1);
switch (i) {
case 0:
/* CMD */
at91_set_A_periph(AT91_PIN_PA7, 1);
/* DAT0, maybe DAT1..DAT3 */
at91_set_A_periph(AT91_PIN_PA6, 1);
if (data->slot[i].bus_width == 4) {
at91_set_A_periph(AT91_PIN_PA9, 1);
at91_set_A_periph(AT91_PIN_PA10, 1);
at91_set_A_periph(AT91_PIN_PA11, 1);
}
slot_count++;
break;
case 1:
/* CMD */
at91_set_B_periph(AT91_PIN_PA1, 1);
/* DAT0, maybe DAT1..DAT3 */
at91_set_B_periph(AT91_PIN_PA0, 1);
if (data->slot[i].bus_width == 4) {
at91_set_B_periph(AT91_PIN_PA5, 1);
at91_set_B_periph(AT91_PIN_PA4, 1);
at91_set_B_periph(AT91_PIN_PA3, 1);
}
slot_count++;
break;
default:
printk(KERN_ERR
"AT91: SD/MMC slot %d not available\n", i);
break;
}
}
}
if (slot_count) {
/* CLK */
at91_set_A_periph(AT91_PIN_PA8, 0);
mmc_data = *data;
platform_device_register(&at91sam9260_mmc_device);
}
}
#else
void __init at91_add_device_mci(short mmc_id, struct mci_platform_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[] = {
[0] = {
.start = NAND_BASE,
.end = NAND_BASE + SZ_256M - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = AT91SAM9260_BASE_ECC,
.end = AT91SAM9260_BASE_ECC + SZ_512 - 1,
.flags = IORESOURCE_MEM,
}
};
static struct platform_device at91sam9260_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_matrix_read(AT91_MATRIX_EBICSA);
at91_matrix_write(AT91_MATRIX_EBICSA, csa | AT91_MATRIX_CS3A_SMC_SMARTMEDIA);
/* enable pin */
if (gpio_is_valid(data->enable_pin))
at91_set_gpio_output(data->enable_pin, 1);
/* ready/busy pin */
if (gpio_is_valid(data->rdy_pin))
at91_set_gpio_input(data->rdy_pin, 1);
/* card detect pin */
if (gpio_is_valid(data->det_pin))
at91_set_gpio_input(data->det_pin, 1);
nand_data = *data;
platform_device_register(&at91sam9260_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_PA23,
.sda_is_open_drain = 1,
.scl_pin = AT91_PIN_PA24,
.scl_is_open_drain = 1,
.udelay = 2, /* ~100 kHz */
};
static struct platform_device at91sam9260_twi_device = {
.name = "i2c-gpio",
.id = 0,
.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(&at91sam9260_twi_device);
}
#elif defined(CONFIG_I2C_AT91) || defined(CONFIG_I2C_AT91_MODULE)
static struct resource twi_resources[] = {
[0] = {
.start = AT91SAM9260_BASE_TWI,
.end = AT91SAM9260_BASE_TWI + SZ_16K - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = NR_IRQS_LEGACY + AT91SAM9260_ID_TWI,
.end = NR_IRQS_LEGACY + AT91SAM9260_ID_TWI,
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device at91sam9260_twi_device = {
.id = 0,
.resource = twi_resources,
.num_resources = ARRAY_SIZE(twi_resources),
};
void __init at91_add_device_i2c(struct i2c_board_info *devices, int nr_devices)
{
/* IP version is not the same on 9260 and g20 */
if (cpu_is_at91sam9g20()) {
at91sam9260_twi_device.name = "i2c-at91sam9g20";
} else {
at91sam9260_twi_device.name = "i2c-at91sam9260";
}
/* 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(&at91sam9260_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 = AT91SAM9260_BASE_SPI0,
.end = AT91SAM9260_BASE_SPI0 + SZ_16K - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = NR_IRQS_LEGACY + AT91SAM9260_ID_SPI0,
.end = NR_IRQS_LEGACY + AT91SAM9260_ID_SPI0,
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device at91sam9260_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_PC11, AT91_PIN_PC16, AT91_PIN_PC17 };
static struct resource spi1_resources[] = {
[0] = {
.start = AT91SAM9260_BASE_SPI1,
.end = AT91SAM9260_BASE_SPI1 + SZ_16K - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = NR_IRQS_LEGACY + AT91SAM9260_ID_SPI1,
.end = NR_IRQS_LEGACY + AT91SAM9260_ID_SPI1,
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device at91sam9260_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_PB3, AT91_PIN_PC5, AT91_PIN_PC4, AT91_PIN_PC3 };
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 (!gpio_is_valid(cs_pin))
continue;
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); /* SPI1_SPCK */
platform_device_register(&at91sam9260_spi0_device);
}
if (enable_spi1) {
at91_set_A_periph(AT91_PIN_PB0, 0); /* SPI1_MISO */
at91_set_A_periph(AT91_PIN_PB1, 0); /* SPI1_MOSI */
at91_set_A_periph(AT91_PIN_PB2, 0); /* SPI1_SPCK */
platform_device_register(&at91sam9260_spi1_device);
}
}
#else
void __init at91_add_device_spi(struct spi_board_info *devices, int nr_devices) {}
#endif
/* --------------------------------------------------------------------
* Timer/Counter blocks
* -------------------------------------------------------------------- */
#ifdef CONFIG_ATMEL_TCLIB
static struct resource tcb0_resources[] = {
[0] = {
.start = AT91SAM9260_BASE_TCB0,
.end = AT91SAM9260_BASE_TCB0 + SZ_256 - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = NR_IRQS_LEGACY + AT91SAM9260_ID_TC0,
.end = NR_IRQS_LEGACY + AT91SAM9260_ID_TC0,
.flags = IORESOURCE_IRQ,
},
[2] = {
.start = NR_IRQS_LEGACY + AT91SAM9260_ID_TC1,
.end = NR_IRQS_LEGACY + AT91SAM9260_ID_TC1,
.flags = IORESOURCE_IRQ,
},
[3] = {
.start = NR_IRQS_LEGACY + AT91SAM9260_ID_TC2,
.end = NR_IRQS_LEGACY + AT91SAM9260_ID_TC2,
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device at91sam9260_tcb0_device = {
.name = "atmel_tcb",
.id = 0,
.resource = tcb0_resources,
.num_resources = ARRAY_SIZE(tcb0_resources),
};
static struct resource tcb1_resources[] = {
[0] = {
.start = AT91SAM9260_BASE_TCB1,
.end = AT91SAM9260_BASE_TCB1 + SZ_256 - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = NR_IRQS_LEGACY + AT91SAM9260_ID_TC3,
.end = NR_IRQS_LEGACY + AT91SAM9260_ID_TC3,
.flags = IORESOURCE_IRQ,
},
[2] = {
.start = NR_IRQS_LEGACY + AT91SAM9260_ID_TC4,
.end = NR_IRQS_LEGACY + AT91SAM9260_ID_TC4,
.flags = IORESOURCE_IRQ,
},
[3] = {
.start = NR_IRQS_LEGACY + AT91SAM9260_ID_TC5,
.end = NR_IRQS_LEGACY + AT91SAM9260_ID_TC5,
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device at91sam9260_tcb1_device = {
.name = "atmel_tcb",
.id = 1,
.resource = tcb1_resources,
.num_resources = ARRAY_SIZE(tcb1_resources),
};
static void __init at91_add_device_tc(void)
{
platform_device_register(&at91sam9260_tcb0_device);
platform_device_register(&at91sam9260_tcb1_device);
}
#else
static void __init at91_add_device_tc(void) { }
#endif
/* --------------------------------------------------------------------
* RTT
* -------------------------------------------------------------------- */
static struct resource rtt_resources[] = {
{
.start = AT91SAM9260_BASE_RTT,
.end = AT91SAM9260_BASE_RTT + SZ_16 - 1,
.flags = IORESOURCE_MEM,
}, {
.flags = IORESOURCE_MEM,
}, {
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device at91sam9260_rtt_device = {
.name = "at91_rtt",
.id = 0,
.resource = rtt_resources,
};
#if IS_ENABLED(CONFIG_RTC_DRV_AT91SAM9)
static void __init at91_add_device_rtt_rtc(void)
{
at91sam9260_rtt_device.name = "rtc-at91sam9";
/*
* The second resource is needed:
* GPBR will serve as the storage for RTC time offset
*/
at91sam9260_rtt_device.num_resources = 3;
rtt_resources[1].start = AT91SAM9260_BASE_GPBR +
4 * CONFIG_RTC_DRV_AT91SAM9_GPBR;
rtt_resources[1].end = rtt_resources[1].start + 3;
rtt_resources[2].start = NR_IRQS_LEGACY + AT91_ID_SYS;
rtt_resources[2].end = NR_IRQS_LEGACY + AT91_ID_SYS;
}
#else
static void __init at91_add_device_rtt_rtc(void)
{
/* Only one resource is needed: RTT not used as RTC */
at91sam9260_rtt_device.num_resources = 1;
}
#endif
static void __init at91_add_device_rtt(void)
{
at91_add_device_rtt_rtc();
platform_device_register(&at91sam9260_rtt_device);
}
/* --------------------------------------------------------------------
* Watchdog
* -------------------------------------------------------------------- */
#if defined(CONFIG_AT91SAM9X_WATCHDOG) || defined(CONFIG_AT91SAM9X_WATCHDOG_MODULE)
static struct resource wdt_resources[] = {
{
.start = AT91SAM9260_BASE_WDT,
.end = AT91SAM9260_BASE_WDT + SZ_16 - 1,
.flags = IORESOURCE_MEM,
}
};
static struct platform_device at91sam9260_wdt_device = {
.name = "at91_wdt",
.id = -1,
.resource = wdt_resources,
.num_resources = ARRAY_SIZE(wdt_resources),
};
static void __init at91_add_device_watchdog(void)
{
platform_device_register(&at91sam9260_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 ssc_dmamask = DMA_BIT_MASK(32);
static struct resource ssc_resources[] = {
[0] = {
.start = AT91SAM9260_BASE_SSC,
.end = AT91SAM9260_BASE_SSC + SZ_16K - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = NR_IRQS_LEGACY + AT91SAM9260_ID_SSC,
.end = NR_IRQS_LEGACY + AT91SAM9260_ID_SSC,
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device at91sam9260_ssc_device = {
.name = "at91rm9200_ssc",
.id = 0,
.dev = {
.dma_mask = &ssc_dmamask,
.coherent_dma_mask = DMA_BIT_MASK(32),
},
.resource = ssc_resources,
.num_resources = ARRAY_SIZE(ssc_resources),
};
static inline void configure_ssc_pins(unsigned pins)
{
if (pins & ATMEL_SSC_TF)
at91_set_A_periph(AT91_PIN_PB17, 1);
if (pins & ATMEL_SSC_TK)
at91_set_A_periph(AT91_PIN_PB16, 1);
if (pins & ATMEL_SSC_TD)
at91_set_A_periph(AT91_PIN_PB18, 1);
if (pins & ATMEL_SSC_RD)
at91_set_A_periph(AT91_PIN_PB19, 1);
if (pins & ATMEL_SSC_RK)
at91_set_A_periph(AT91_PIN_PB20, 1);
if (pins & ATMEL_SSC_RF)
at91_set_A_periph(AT91_PIN_PB21, 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 AT91SAM9260_ID_SSC:
pdev = &at91sam9260_ssc_device;
configure_ssc_pins(pins);
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 = AT91SAM9260_BASE_DBGU,
.end = AT91SAM9260_BASE_DBGU + SZ_512 - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = NR_IRQS_LEGACY + AT91_ID_SYS,
.end = NR_IRQS_LEGACY + 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 */
.rts_gpio = -EINVAL,
};
static u64 dbgu_dmamask = DMA_BIT_MASK(32);
static struct platform_device at91sam9260_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_PB14, 0); /* DRXD */
at91_set_A_periph(AT91_PIN_PB15, 1); /* DTXD */
}
static struct resource uart0_resources[] = {
[0] = {
.start = AT91SAM9260_BASE_US0,
.end = AT91SAM9260_BASE_US0 + SZ_16K - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = NR_IRQS_LEGACY + AT91SAM9260_ID_US0,
.end = NR_IRQS_LEGACY + AT91SAM9260_ID_US0,
.flags = IORESOURCE_IRQ,
},
};
static struct atmel_uart_data uart0_data = {
.use_dma_tx = 1,
.use_dma_rx = 1,
.rts_gpio = -EINVAL,
};
static u64 uart0_dmamask = DMA_BIT_MASK(32);
static struct platform_device at91sam9260_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_PB4, 1); /* TXD0 */
at91_set_A_periph(AT91_PIN_PB5, 0); /* RXD0 */
if (pins & ATMEL_UART_RTS)
at91_set_A_periph(AT91_PIN_PB26, 0); /* RTS0 */
if (pins & ATMEL_UART_CTS)
at91_set_A_periph(AT91_PIN_PB27, 0); /* CTS0 */
if (pins & ATMEL_UART_DTR)
at91_set_A_periph(AT91_PIN_PB24, 0); /* DTR0 */
if (pins & ATMEL_UART_DSR)
at91_set_A_periph(AT91_PIN_PB22, 0); /* DSR0 */
if (pins & ATMEL_UART_DCD)
at91_set_A_periph(AT91_PIN_PB23, 0); /* DCD0 */
if (pins & ATMEL_UART_RI)
at91_set_A_periph(AT91_PIN_PB25, 0); /* RI0 */
}
static struct resource uart1_resources[] = {
[0] = {
.start = AT91SAM9260_BASE_US1,
.end = AT91SAM9260_BASE_US1 + SZ_16K - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = NR_IRQS_LEGACY + AT91SAM9260_ID_US1,
.end = NR_IRQS_LEGACY + AT91SAM9260_ID_US1,
.flags = IORESOURCE_IRQ,
},
};
static struct atmel_uart_data uart1_data = {
.use_dma_tx = 1,
.use_dma_rx = 1,
.rts_gpio = -EINVAL,
};
static u64 uart1_dmamask = DMA_BIT_MASK(32);
static struct platform_device at91sam9260_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_PB6, 1); /* TXD1 */
at91_set_A_periph(AT91_PIN_PB7, 0); /* RXD1 */
if (pins & ATMEL_UART_RTS)
at91_set_A_periph(AT91_PIN_PB28, 0); /* RTS1 */
if (pins & ATMEL_UART_CTS)
at91_set_A_periph(AT91_PIN_PB29, 0); /* CTS1 */
}
static struct resource uart2_resources[] = {
[0] = {
.start = AT91SAM9260_BASE_US2,
.end = AT91SAM9260_BASE_US2 + SZ_16K - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = NR_IRQS_LEGACY + AT91SAM9260_ID_US2,
.end = NR_IRQS_LEGACY + AT91SAM9260_ID_US2,
.flags = IORESOURCE_IRQ,
},
};
static struct atmel_uart_data uart2_data = {
.use_dma_tx = 1,
.use_dma_rx = 1,
.rts_gpio = -EINVAL,
};
static u64 uart2_dmamask = DMA_BIT_MASK(32);
static struct platform_device at91sam9260_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_PB8, 1); /* TXD2 */
at91_set_A_periph(AT91_PIN_PB9, 0); /* RXD2 */
if (pins & ATMEL_UART_RTS)
at91_set_A_periph(AT91_PIN_PA4, 0); /* RTS2 */
if (pins & ATMEL_UART_CTS)
at91_set_A_periph(AT91_PIN_PA5, 0); /* CTS2 */
}
static struct resource uart3_resources[] = {
[0] = {
.start = AT91SAM9260_BASE_US3,
.end = AT91SAM9260_BASE_US3 + SZ_16K - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = NR_IRQS_LEGACY + AT91SAM9260_ID_US3,
.end = NR_IRQS_LEGACY + AT91SAM9260_ID_US3,
.flags = IORESOURCE_IRQ,
},
};
static struct atmel_uart_data uart3_data = {
.use_dma_tx = 1,
.use_dma_rx = 1,
.rts_gpio = -EINVAL,
};
static u64 uart3_dmamask = DMA_BIT_MASK(32);
static struct platform_device at91sam9260_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_PB10, 1); /* TXD3 */
at91_set_A_periph(AT91_PIN_PB11, 0); /* RXD3 */
if (pins & ATMEL_UART_RTS)
at91_set_B_periph(AT91_PIN_PC8, 0); /* RTS3 */
if (pins & ATMEL_UART_CTS)
at91_set_B_periph(AT91_PIN_PC10, 0); /* CTS3 */
}
static struct resource uart4_resources[] = {
[0] = {
.start = AT91SAM9260_BASE_US4,
.end = AT91SAM9260_BASE_US4 + SZ_16K - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = NR_IRQS_LEGACY + AT91SAM9260_ID_US4,
.end = NR_IRQS_LEGACY + AT91SAM9260_ID_US4,
.flags = IORESOURCE_IRQ,
},
};
static struct atmel_uart_data uart4_data = {
.use_dma_tx = 1,
.use_dma_rx = 1,
.rts_gpio = -EINVAL,
};
static u64 uart4_dmamask = DMA_BIT_MASK(32);
static struct platform_device at91sam9260_uart4_device = {
.name = "atmel_usart",
.id = 5,
.dev = {
.dma_mask = &uart4_dmamask,
.coherent_dma_mask = DMA_BIT_MASK(32),
.platform_data = &uart4_data,
},
.resource = uart4_resources,
.num_resources = ARRAY_SIZE(uart4_resources),
};
static inline void configure_usart4_pins(void)
{
at91_set_B_periph(AT91_PIN_PA31, 1); /* TXD4 */
at91_set_B_periph(AT91_PIN_PA30, 0); /* RXD4 */
}
static struct resource uart5_resources[] = {
[0] = {
.start = AT91SAM9260_BASE_US5,
.end = AT91SAM9260_BASE_US5 + SZ_16K - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = NR_IRQS_LEGACY + AT91SAM9260_ID_US5,
.end = NR_IRQS_LEGACY + AT91SAM9260_ID_US5,
.flags = IORESOURCE_IRQ,
},
};
static struct atmel_uart_data uart5_data = {
.use_dma_tx = 1,
.use_dma_rx = 1,
.rts_gpio = -EINVAL,
};
static u64 uart5_dmamask = DMA_BIT_MASK(32);
static struct platform_device at91sam9260_uart5_device = {
.name = "atmel_usart",
.id = 6,
.dev = {
.dma_mask = &uart5_dmamask,
.coherent_dma_mask = DMA_BIT_MASK(32),
.platform_data = &uart5_data,
},
.resource = uart5_resources,
.num_resources = ARRAY_SIZE(uart5_resources),
};
static inline void configure_usart5_pins(void)
{
at91_set_A_periph(AT91_PIN_PB12, 1); /* TXD5 */
at91_set_A_periph(AT91_PIN_PB13, 0); /* RXD5 */
}
static struct platform_device *__initdata at91_uarts[ATMEL_MAX_UART]; /* the UARTs to use */
void __init at91_register_uart(unsigned id, unsigned portnr, unsigned pins)
{
struct platform_device *pdev;
struct atmel_uart_data *pdata;
switch (id) {
case 0: /* DBGU */
pdev = &at91sam9260_dbgu_device;
configure_dbgu_pins();
break;
case AT91SAM9260_ID_US0:
pdev = &at91sam9260_uart0_device;
configure_usart0_pins(pins);
break;
case AT91SAM9260_ID_US1:
pdev = &at91sam9260_uart1_device;
configure_usart1_pins(pins);
break;
case AT91SAM9260_ID_US2:
pdev = &at91sam9260_uart2_device;
configure_usart2_pins(pins);
break;
case AT91SAM9260_ID_US3:
pdev = &at91sam9260_uart3_device;
configure_usart3_pins(pins);
break;
case AT91SAM9260_ID_US4:
pdev = &at91sam9260_uart4_device;
configure_usart4_pins();
break;
case AT91SAM9260_ID_US5:
pdev = &at91sam9260_uart5_device;
configure_usart5_pins();
break;
default:
return;
}
pdata = pdev->dev.platform_data;
pdata->num = portnr; /* update to mapped ID */
if (portnr < ATMEL_MAX_UART)
at91_uarts[portnr] = pdev;
}
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_register_uart(unsigned id, unsigned portnr, unsigned pins) {}
void __init at91_add_device_serial(void) {}
#endif
/* --------------------------------------------------------------------
* CF/IDE
* -------------------------------------------------------------------- */
#if defined(CONFIG_PATA_AT91) || defined(CONFIG_PATA_AT91_MODULE) || \
defined(CONFIG_AT91_CF) || defined(CONFIG_AT91_CF_MODULE)
static struct at91_cf_data cf0_data;
static struct resource cf0_resources[] = {
[0] = {
.start = AT91_CHIPSELECT_4,
.end = AT91_CHIPSELECT_4 + SZ_256M - 1,
.flags = IORESOURCE_MEM,
}
};
static struct platform_device cf0_device = {
.id = 0,
.dev = {
.platform_data = &cf0_data,
},
.resource = cf0_resources,
.num_resources = ARRAY_SIZE(cf0_resources),
};
static struct at91_cf_data cf1_data;
static struct resource cf1_resources[] = {
[0] = {
.start = AT91_CHIPSELECT_5,
.end = AT91_CHIPSELECT_5 + SZ_256M - 1,
.flags = IORESOURCE_MEM,
}
};
static struct platform_device cf1_device = {
.id = 1,
.dev = {
.platform_data = &cf1_data,
},
.resource = cf1_resources,
.num_resources = ARRAY_SIZE(cf1_resources),
};
void __init at91_add_device_cf(struct at91_cf_data *data)
{
struct platform_device *pdev;
unsigned long csa;
if (!data)
return;
csa = at91_matrix_read(AT91_MATRIX_EBICSA);
switch (data->chipselect) {
case 4:
at91_set_multi_drive(AT91_PIN_PC8, 0);
at91_set_A_periph(AT91_PIN_PC8, 0);
csa |= AT91_MATRIX_CS4A_SMC_CF1;
cf0_data = *data;
pdev = &cf0_device;
break;
case 5:
at91_set_multi_drive(AT91_PIN_PC9, 0);
at91_set_A_periph(AT91_PIN_PC9, 0);
csa |= AT91_MATRIX_CS5A_SMC_CF2;
cf1_data = *data;
pdev = &cf1_device;
break;
default:
printk(KERN_ERR "AT91 CF: bad chip-select requested (%u)\n",
data->chipselect);
return;
}
at91_matrix_write(AT91_MATRIX_EBICSA, csa);
if (gpio_is_valid(data->rst_pin)) {
at91_set_multi_drive(data->rst_pin, 0);
at91_set_gpio_output(data->rst_pin, 1);
}
if (gpio_is_valid(data->irq_pin)) {
at91_set_gpio_input(data->irq_pin, 0);
at91_set_deglitch(data->irq_pin, 1);
}
if (gpio_is_valid(data->det_pin)) {
at91_set_gpio_input(data->det_pin, 0);
at91_set_deglitch(data->det_pin, 1);
}
at91_set_B_periph(AT91_PIN_PC6, 0); /* CFCE1 */
at91_set_B_periph(AT91_PIN_PC7, 0); /* CFCE2 */
at91_set_A_periph(AT91_PIN_PC10, 0); /* CFRNW */
at91_set_A_periph(AT91_PIN_PC15, 1); /* NWAIT */
if (IS_ENABLED(CONFIG_PATA_AT91) && (data->flags & AT91_CF_TRUE_IDE))
pdev->name = "pata_at91";
else
pdev->name = "at91_cf";
platform_device_register(pdev);
}
#else
void __init at91_add_device_cf(struct at91_cf_data * data) {}
#endif
/* --------------------------------------------------------------------
* ADCs
* -------------------------------------------------------------------- */
#if IS_ENABLED(CONFIG_AT91_ADC)
static struct at91_adc_data adc_data;
static struct resource adc_resources[] = {
[0] = {
.start = AT91SAM9260_BASE_ADC,
.end = AT91SAM9260_BASE_ADC + SZ_16K - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = NR_IRQS_LEGACY + AT91SAM9260_ID_ADC,
.end = NR_IRQS_LEGACY + AT91SAM9260_ID_ADC,
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device at91_adc_device = {
.name = "at91_adc",
.id = -1,
.dev = {
.platform_data = &adc_data,
},
.resource = adc_resources,
.num_resources = ARRAY_SIZE(adc_resources),
};
static struct at91_adc_trigger at91_adc_triggers[] = {
[0] = {
.name = "timer-counter-0",
.value = AT91_ADC_TRGSEL_TC0 | AT91_ADC_TRGEN,
},
[1] = {
.name = "timer-counter-1",
.value = AT91_ADC_TRGSEL_TC1 | AT91_ADC_TRGEN,
},
[2] = {
.name = "timer-counter-2",
.value = AT91_ADC_TRGSEL_TC2 | AT91_ADC_TRGEN,
},
[3] = {
.name = "external",
.value = AT91_ADC_TRGSEL_EXTERNAL | AT91_ADC_TRGEN,
.is_external = true,
},
};
static struct at91_adc_reg_desc at91_adc_register_g20 = {
.channel_base = AT91_ADC_CHR(0),
.drdy_mask = AT91_ADC_DRDY,
.status_register = AT91_ADC_SR,
.trigger_register = AT91_ADC_MR,
};
void __init at91_add_device_adc(struct at91_adc_data *data)
{
if (!data)
return;
if (test_bit(0, &data->channels_used))
at91_set_A_periph(AT91_PIN_PC0, 0);
if (test_bit(1, &data->channels_used))
at91_set_A_periph(AT91_PIN_PC1, 0);
if (test_bit(2, &data->channels_used))
at91_set_A_periph(AT91_PIN_PC2, 0);
if (test_bit(3, &data->channels_used))
at91_set_A_periph(AT91_PIN_PC3, 0);
if (data->use_external_triggers)
at91_set_A_periph(AT91_PIN_PA22, 0);
data->num_channels = 4;
data->startup_time = 10;
data->registers = &at91_adc_register_g20;
data->trigger_number = 4;
data->trigger_list = at91_adc_triggers;
adc_data = *data;
platform_device_register(&at91_adc_device);
}
#else
void __init at91_add_device_adc(struct at91_adc_data *data) {}
#endif
/* -------------------------------------------------------------------- */
/*
* These devices are always present and don't need any board-specific
* setup.
*/
static int __init at91_add_standard_devices(void)
{
if (of_have_populated_dt())
return 0;
at91_add_device_rtt();
at91_add_device_watchdog();
at91_add_device_tc();
return 0;
}
arch_initcall(at91_add_standard_devices);
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