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linux/arch/arm/mach-at91/at91rm9200_devices.c
Linus Torvalds 49eb7b0750 TTY/Serial driver patches for 3.16-rc1 
Here is the big tty / serial driver pull request for 3.16-rc1.
 
 A variety of different serial driver fixes and updates and additions,
 nothing huge, and no real major core tty changes at all.
 
 All have been in linux-next for a while.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'tty-3.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty into next

Pull tty/serial driver updates from Greg KH:
 "Here is the big tty / serial driver pull request for 3.16-rc1.

  A variety of different serial driver fixes and updates and additions,
  nothing huge, and no real major core tty changes at all.

  All have been in linux-next for a while"

* tag 'tty-3.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (84 commits)
  Revert "serial: imx: remove the DMA wait queue"
  serial: kgdb_nmi: Improve console integration with KDB I/O
  serial: kgdb_nmi: Switch from tasklets to real timers
  serial: kgdb_nmi: Use container_of() to locate private data
  serial: cpm_uart: No LF conversion in put_poll_char()
  serial: sirf: Fix compilation failure
  console: Remove superfluous readonly check
  console: Use explicit pointer type for vc_uni_pagedir* fields
  vgacon: Fix & cleanup refcounting
  ARM: tty: Move HVC DCC assembly to arch/arm
  tty/hvc/hvc_console: Fix wakeup of HVC thread on hvc_kick()
  drivers/tty/n_hdlc.c: replace kmalloc/memset by kzalloc
  vt: emulate 8- and 24-bit colour codes.
  printk/of_serial: fix serial console cessation part way through boot.
  serial: 8250_dma: check the result of TX buffer mapping
  serial: uart: add hw flow control support configuration
  tty/serial: at91: add interrupts for modem control lines
  tty/serial: at91: use mctrl_gpio helpers
  tty/serial: Add GPIOLIB helpers for controlling modem lines
  ARM: at91: gpio: implement get_direction
  ...
2014-06-03 09:01:02 -07:00

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/*
* arch/arm/mach-at91/at91rm9200_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/gpio.h>
#include <linux/gpio/driver.h>
#include <linux/platform_device.h>
#include <linux/i2c-gpio.h>
#include <mach/at91rm9200.h>
#include <mach/at91rm9200_mc.h>
#include <mach/at91_ramc.h>
#include <mach/hardware.h>
#include "board.h"
#include "generic.h"
#include "gpio.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 = AT91RM9200_UHP_BASE,
.end = AT91RM9200_UHP_BASE + SZ_1M - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = NR_IRQS_LEGACY + AT91RM9200_ID_UHP,
.end = NR_IRQS_LEGACY + AT91RM9200_ID_UHP,
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device at91rm9200_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(&at91rm9200_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 = AT91RM9200_BASE_UDP,
.end = AT91RM9200_BASE_UDP + SZ_16K - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = NR_IRQS_LEGACY + AT91RM9200_ID_UDP,
.end = NR_IRQS_LEGACY + AT91RM9200_ID_UDP,
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device at91rm9200_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);
}
if (gpio_is_valid(data->pullup_pin))
at91_set_gpio_output(data->pullup_pin, 0);
udc_data = *data;
platform_device_register(&at91rm9200_udc_device);
}
#else
void __init at91_add_device_udc(struct at91_udc_data *data) {}
#endif
/* --------------------------------------------------------------------
* Ethernet
* -------------------------------------------------------------------- */
#if defined(CONFIG_ARM_AT91_ETHER) || defined(CONFIG_ARM_AT91_ETHER_MODULE)
static u64 eth_dmamask = DMA_BIT_MASK(32);
static struct macb_platform_data eth_data;
static struct resource eth_resources[] = {
[0] = {
.start = AT91RM9200_BASE_EMAC,
.end = AT91RM9200_BASE_EMAC + SZ_16K - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = NR_IRQS_LEGACY + AT91RM9200_ID_EMAC,
.end = NR_IRQS_LEGACY + AT91RM9200_ID_EMAC,
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device at91rm9200_eth_device = {
.name = "at91_ether",
.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_PA16, 0); /* EMDIO */
at91_set_A_periph(AT91_PIN_PA15, 0); /* EMDC */
at91_set_A_periph(AT91_PIN_PA14, 0); /* ERXER */
at91_set_A_periph(AT91_PIN_PA13, 0); /* ERX1 */
at91_set_A_periph(AT91_PIN_PA12, 0); /* ERX0 */
at91_set_A_periph(AT91_PIN_PA11, 0); /* ECRS_ECRSDV */
at91_set_A_periph(AT91_PIN_PA10, 0); /* ETX1 */
at91_set_A_periph(AT91_PIN_PA9, 0); /* ETX0 */
at91_set_A_periph(AT91_PIN_PA8, 0); /* ETXEN */
at91_set_A_periph(AT91_PIN_PA7, 0); /* ETXCK_EREFCK */
if (!data->is_rmii) {
at91_set_B_periph(AT91_PIN_PB19, 0); /* ERXCK */
at91_set_B_periph(AT91_PIN_PB18, 0); /* ECOL */
at91_set_B_periph(AT91_PIN_PB17, 0); /* ERXDV */
at91_set_B_periph(AT91_PIN_PB16, 0); /* ERX3 */
at91_set_B_periph(AT91_PIN_PB15, 0); /* ERX2 */
at91_set_B_periph(AT91_PIN_PB14, 0); /* ETXER */
at91_set_B_periph(AT91_PIN_PB13, 0); /* ETX3 */
at91_set_B_periph(AT91_PIN_PB12, 0); /* ETX2 */
}
eth_data = *data;
platform_device_register(&at91rm9200_eth_device);
}
#else
void __init at91_add_device_eth(struct macb_platform_data *data) {}
#endif
/* --------------------------------------------------------------------
* Compact Flash / PCMCIA
* -------------------------------------------------------------------- */
#if defined(CONFIG_AT91_CF) || defined(CONFIG_AT91_CF_MODULE)
static struct at91_cf_data cf_data;
#define CF_BASE AT91_CHIPSELECT_4
static struct resource cf_resources[] = {
[0] = {
.start = CF_BASE,
/* ties up CS4, CS5 and CS6 */
.end = CF_BASE + (0x30000000 - 1),
.flags = IORESOURCE_MEM | IORESOURCE_MEM_8AND16BIT,
},
};
static struct platform_device at91rm9200_cf_device = {
.name = "at91_cf",
.id = -1,
.dev = {
.platform_data = &cf_data,
},
.resource = cf_resources,
.num_resources = ARRAY_SIZE(cf_resources),
};
void __init at91_add_device_cf(struct at91_cf_data *data)
{
unsigned int csa;
if (!data)
return;
data->chipselect = 4; /* can only use EBI ChipSelect 4 */
/* CF takes over CS4, CS5, CS6 */
csa = at91_ramc_read(0, AT91_EBI_CSA);
at91_ramc_write(0, AT91_EBI_CSA, csa | AT91_EBI_CS4A_SMC_COMPACTFLASH);
/*
* Static memory controller timing adjustments.
* REVISIT: these timings are in terms of MCK cycles, so
* when MCK changes (cpufreq etc) so must these values...
*/
at91_ramc_write(0, AT91_SMC_CSR(4),
AT91_SMC_ACSS_STD
| AT91_SMC_DBW_16
| AT91_SMC_BAT
| AT91_SMC_WSEN
| AT91_SMC_NWS_(32) /* wait states */
| AT91_SMC_RWSETUP_(6) /* setup time */
| AT91_SMC_RWHOLD_(4) /* hold time */
);
/* input/irq */
if (gpio_is_valid(data->irq_pin)) {
at91_set_gpio_input(data->irq_pin, 1);
at91_set_deglitch(data->irq_pin, 1);
}
at91_set_gpio_input(data->det_pin, 1);
at91_set_deglitch(data->det_pin, 1);
/* outputs, initially off */
if (gpio_is_valid(data->vcc_pin))
at91_set_gpio_output(data->vcc_pin, 0);
at91_set_gpio_output(data->rst_pin, 0);
/* force poweron defaults for these pins ... */
at91_set_A_periph(AT91_PIN_PC9, 0); /* A25/CFRNW */
at91_set_A_periph(AT91_PIN_PC10, 0); /* NCS4/CFCS */
at91_set_A_periph(AT91_PIN_PC11, 0); /* NCS5/CFCE1 */
at91_set_A_periph(AT91_PIN_PC12, 0); /* NCS6/CFCE2 */
/* nWAIT is _not_ a default setting */
at91_set_A_periph(AT91_PIN_PC6, 1); /* nWAIT */
cf_data = *data;
platform_device_register(&at91rm9200_cf_device);
}
#else
void __init at91_add_device_cf(struct at91_cf_data *data) {}
#endif
/* --------------------------------------------------------------------
* MMC / SD
* -------------------------------------------------------------------- */
#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 = AT91RM9200_BASE_MCI,
.end = AT91RM9200_BASE_MCI + SZ_16K - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = NR_IRQS_LEGACY + AT91RM9200_ID_MCI,
.end = NR_IRQS_LEGACY + AT91RM9200_ID_MCI,
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device at91rm9200_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)
continue;
/* 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: /* slot A */
/* CMD */
at91_set_A_periph(AT91_PIN_PA28, 1);
/* DAT0, maybe DAT1..DAT3 */
at91_set_A_periph(AT91_PIN_PA29, 1);
if (data->slot[i].bus_width == 4) {
at91_set_B_periph(AT91_PIN_PB3, 1);
at91_set_B_periph(AT91_PIN_PB4, 1);
at91_set_B_periph(AT91_PIN_PB5, 1);
}
slot_count++;
break;
case 1: /* slot B */
/* CMD */
at91_set_B_periph(AT91_PIN_PA8, 1);
/* DAT0, maybe DAT1..DAT3 */
at91_set_B_periph(AT91_PIN_PA9, 1);
if (data->slot[i].bus_width == 4) {
at91_set_B_periph(AT91_PIN_PA10, 1);
at91_set_B_periph(AT91_PIN_PA11, 1);
at91_set_B_periph(AT91_PIN_PA12, 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_PA27, 0);
mmc_data = *data;
platform_device_register(&at91rm9200_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[] = {
{
.start = NAND_BASE,
.end = NAND_BASE + SZ_256M - 1,
.flags = IORESOURCE_MEM,
}
};
static struct platform_device at91rm9200_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 int csa;
if (!data)
return;
/* enable the address range of CS3 */
csa = at91_ramc_read(0, AT91_EBI_CSA);
at91_ramc_write(0, AT91_EBI_CSA, csa | AT91_EBI_CS3A_SMC_SMARTMEDIA);
/* set the bus interface characteristics */
at91_ramc_write(0, AT91_SMC_CSR(3), AT91_SMC_ACSS_STD | AT91_SMC_DBW_8 | AT91_SMC_WSEN
| AT91_SMC_NWS_(5)
| AT91_SMC_TDF_(1)
| AT91_SMC_RWSETUP_(0) /* tDS Data Set up Time 30 - ns */
| AT91_SMC_RWHOLD_(1) /* tDH Data Hold Time 20 - ns */
);
/* 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);
at91_set_A_periph(AT91_PIN_PC1, 0); /* SMOE */
at91_set_A_periph(AT91_PIN_PC3, 0); /* SMWE */
nand_data = *data;
platform_device_register(&at91rm9200_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_PA25,
.sda_is_open_drain = 1,
.scl_pin = AT91_PIN_PA26,
.scl_is_open_drain = 1,
.udelay = 2, /* ~100 kHz */
};
static struct platform_device at91rm9200_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_PA25, 1); /* TWD (SDA) */
at91_set_multi_drive(AT91_PIN_PA25, 1);
at91_set_GPIO_periph(AT91_PIN_PA26, 1); /* TWCK (SCL) */
at91_set_multi_drive(AT91_PIN_PA26, 1);
i2c_register_board_info(0, devices, nr_devices);
platform_device_register(&at91rm9200_twi_device);
}
#elif defined(CONFIG_I2C_AT91) || defined(CONFIG_I2C_AT91_MODULE)
static struct resource twi_resources[] = {
[0] = {
.start = AT91RM9200_BASE_TWI,
.end = AT91RM9200_BASE_TWI + SZ_16K - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = NR_IRQS_LEGACY + AT91RM9200_ID_TWI,
.end = NR_IRQS_LEGACY + AT91RM9200_ID_TWI,
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device at91rm9200_twi_device = {
.name = "i2c-at91rm9200",
.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)
{
/* pins used for TWI interface */
at91_set_A_periph(AT91_PIN_PA25, 0); /* TWD */
at91_set_multi_drive(AT91_PIN_PA25, 1);
at91_set_A_periph(AT91_PIN_PA26, 0); /* TWCK */
at91_set_multi_drive(AT91_PIN_PA26, 1);
i2c_register_board_info(0, devices, nr_devices);
platform_device_register(&at91rm9200_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 = AT91RM9200_BASE_SPI,
.end = AT91RM9200_BASE_SPI + SZ_16K - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = NR_IRQS_LEGACY + AT91RM9200_ID_SPI,
.end = NR_IRQS_LEGACY + AT91RM9200_ID_SPI,
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device at91rm9200_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_PA3, AT91_PIN_PA4, AT91_PIN_PA5, AT91_PIN_PA6 };
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_PA0, 0); /* MISO */
at91_set_A_periph(AT91_PIN_PA1, 0); /* MOSI */
at91_set_A_periph(AT91_PIN_PA2, 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];
if (devices[i].chip_select == 0) /* for CS0 errata */
at91_set_A_periph(cs_pin, 0);
else
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(&at91rm9200_spi_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 = AT91RM9200_BASE_TCB0,
.end = AT91RM9200_BASE_TCB0 + SZ_16K - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = NR_IRQS_LEGACY + AT91RM9200_ID_TC0,
.end = NR_IRQS_LEGACY + AT91RM9200_ID_TC0,
.flags = IORESOURCE_IRQ,
},
[2] = {
.start = NR_IRQS_LEGACY + AT91RM9200_ID_TC1,
.end = NR_IRQS_LEGACY + AT91RM9200_ID_TC1,
.flags = IORESOURCE_IRQ,
},
[3] = {
.start = NR_IRQS_LEGACY + AT91RM9200_ID_TC2,
.end = NR_IRQS_LEGACY + AT91RM9200_ID_TC2,
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device at91rm9200_tcb0_device = {
.name = "atmel_tcb",
.id = 0,
.resource = tcb0_resources,
.num_resources = ARRAY_SIZE(tcb0_resources),
};
static struct resource tcb1_resources[] = {
[0] = {
.start = AT91RM9200_BASE_TCB1,
.end = AT91RM9200_BASE_TCB1 + SZ_16K - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = NR_IRQS_LEGACY + AT91RM9200_ID_TC3,
.end = NR_IRQS_LEGACY + AT91RM9200_ID_TC3,
.flags = IORESOURCE_IRQ,
},
[2] = {
.start = NR_IRQS_LEGACY + AT91RM9200_ID_TC4,
.end = NR_IRQS_LEGACY + AT91RM9200_ID_TC4,
.flags = IORESOURCE_IRQ,
},
[3] = {
.start = NR_IRQS_LEGACY + AT91RM9200_ID_TC5,
.end = NR_IRQS_LEGACY + AT91RM9200_ID_TC5,
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device at91rm9200_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(&at91rm9200_tcb0_device);
platform_device_register(&at91rm9200_tcb1_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 resource rtc_resources[] = {
[0] = {
.start = AT91RM9200_BASE_RTC,
.end = AT91RM9200_BASE_RTC + SZ_256 - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = NR_IRQS_LEGACY + AT91_ID_SYS,
.end = NR_IRQS_LEGACY + AT91_ID_SYS,
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device at91rm9200_rtc_device = {
.name = "at91_rtc",
.id = -1,
.resource = rtc_resources,
.num_resources = ARRAY_SIZE(rtc_resources),
};
static void __init at91_add_device_rtc(void)
{
platform_device_register(&at91rm9200_rtc_device);
}
#else
static void __init at91_add_device_rtc(void) {}
#endif
/* --------------------------------------------------------------------
* Watchdog
* -------------------------------------------------------------------- */
#if defined(CONFIG_AT91RM9200_WATCHDOG) || defined(CONFIG_AT91RM9200_WATCHDOG_MODULE)
static struct platform_device at91rm9200_wdt_device = {
.name = "at91_wdt",
.id = -1,
.num_resources = 0,
};
static void __init at91_add_device_watchdog(void)
{
platform_device_register(&at91rm9200_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 = AT91RM9200_BASE_SSC0,
.end = AT91RM9200_BASE_SSC0 + SZ_16K - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = NR_IRQS_LEGACY + AT91RM9200_ID_SSC0,
.end = NR_IRQS_LEGACY + AT91RM9200_ID_SSC0,
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device at91rm9200_ssc0_device = {
.name = "at91rm9200_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_PB0, 1);
if (pins & ATMEL_SSC_TK)
at91_set_A_periph(AT91_PIN_PB1, 1);
if (pins & ATMEL_SSC_TD)
at91_set_A_periph(AT91_PIN_PB2, 1);
if (pins & ATMEL_SSC_RD)
at91_set_A_periph(AT91_PIN_PB3, 1);
if (pins & ATMEL_SSC_RK)
at91_set_A_periph(AT91_PIN_PB4, 1);
if (pins & ATMEL_SSC_RF)
at91_set_A_periph(AT91_PIN_PB5, 1);
}
static u64 ssc1_dmamask = DMA_BIT_MASK(32);
static struct resource ssc1_resources[] = {
[0] = {
.start = AT91RM9200_BASE_SSC1,
.end = AT91RM9200_BASE_SSC1 + SZ_16K - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = NR_IRQS_LEGACY + AT91RM9200_ID_SSC1,
.end = NR_IRQS_LEGACY + AT91RM9200_ID_SSC1,
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device at91rm9200_ssc1_device = {
.name = "at91rm9200_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_A_periph(AT91_PIN_PB6, 1);
if (pins & ATMEL_SSC_TK)
at91_set_A_periph(AT91_PIN_PB7, 1);
if (pins & ATMEL_SSC_TD)
at91_set_A_periph(AT91_PIN_PB8, 1);
if (pins & ATMEL_SSC_RD)
at91_set_A_periph(AT91_PIN_PB9, 1);
if (pins & ATMEL_SSC_RK)
at91_set_A_periph(AT91_PIN_PB10, 1);
if (pins & ATMEL_SSC_RF)
at91_set_A_periph(AT91_PIN_PB11, 1);
}
static u64 ssc2_dmamask = DMA_BIT_MASK(32);
static struct resource ssc2_resources[] = {
[0] = {
.start = AT91RM9200_BASE_SSC2,
.end = AT91RM9200_BASE_SSC2 + SZ_16K - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = NR_IRQS_LEGACY + AT91RM9200_ID_SSC2,
.end = NR_IRQS_LEGACY + AT91RM9200_ID_SSC2,
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device at91rm9200_ssc2_device = {
.name = "at91rm9200_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_A_periph(AT91_PIN_PB12, 1);
if (pins & ATMEL_SSC_TK)
at91_set_A_periph(AT91_PIN_PB13, 1);
if (pins & ATMEL_SSC_TD)
at91_set_A_periph(AT91_PIN_PB14, 1);
if (pins & ATMEL_SSC_RD)
at91_set_A_periph(AT91_PIN_PB15, 1);
if (pins & ATMEL_SSC_RK)
at91_set_A_periph(AT91_PIN_PB16, 1);
if (pins & ATMEL_SSC_RF)
at91_set_A_periph(AT91_PIN_PB17, 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 AT91RM9200_ID_SSC0:
pdev = &at91rm9200_ssc0_device;
configure_ssc0_pins(pins);
break;
case AT91RM9200_ID_SSC1:
pdev = &at91rm9200_ssc1_device;
configure_ssc1_pins(pins);
break;
case AT91RM9200_ID_SSC2:
pdev = &at91rm9200_ssc2_device;
configure_ssc2_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 = AT91RM9200_BASE_DBGU,
.end = AT91RM9200_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 */
};
static u64 dbgu_dmamask = DMA_BIT_MASK(32);
static struct platform_device at91rm9200_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_PA30, 0); /* DRXD */
at91_set_A_periph(AT91_PIN_PA31, 1); /* DTXD */
}
static struct resource uart0_resources[] = {
[0] = {
.start = AT91RM9200_BASE_US0,
.end = AT91RM9200_BASE_US0 + SZ_16K - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = NR_IRQS_LEGACY + AT91RM9200_ID_US0,
.end = NR_IRQS_LEGACY + AT91RM9200_ID_US0,
.flags = IORESOURCE_IRQ,
},
};
static struct atmel_uart_data uart0_data = {
.use_dma_tx = 1,
.use_dma_rx = 1,
};
static struct gpiod_lookup_table uart0_gpios_table = {
.dev_id = "atmel_usart",
.table = {
GPIO_LOOKUP("pioA", 21, "rts", GPIO_ACTIVE_LOW),
{ },
},
};
static u64 uart0_dmamask = DMA_BIT_MASK(32);
static struct platform_device at91rm9200_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_PA17, 1); /* TXD0 */
at91_set_A_periph(AT91_PIN_PA18, 0); /* RXD0 */
if (pins & ATMEL_UART_CTS)
at91_set_A_periph(AT91_PIN_PA20, 0); /* CTS0 */
if (pins & ATMEL_UART_RTS) {
/*
* AT91RM9200 Errata #39 - RTS0 is not internally connected to PA21.
* We need to drive the pin manually. The serial driver will driver
* this to high when initializing.
*/
gpiod_add_lookup_table(&uart0_gpios_table);
}
}
static struct resource uart1_resources[] = {
[0] = {
.start = AT91RM9200_BASE_US1,
.end = AT91RM9200_BASE_US1 + SZ_16K - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = NR_IRQS_LEGACY + AT91RM9200_ID_US1,
.end = NR_IRQS_LEGACY + AT91RM9200_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 at91rm9200_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_PB20, 1); /* TXD1 */
at91_set_A_periph(AT91_PIN_PB21, 0); /* RXD1 */
if (pins & ATMEL_UART_RI)
at91_set_A_periph(AT91_PIN_PB18, 0); /* RI1 */
if (pins & ATMEL_UART_DTR)
at91_set_A_periph(AT91_PIN_PB19, 0); /* DTR1 */
if (pins & ATMEL_UART_DCD)
at91_set_A_periph(AT91_PIN_PB23, 0); /* DCD1 */
if (pins & ATMEL_UART_CTS)
at91_set_A_periph(AT91_PIN_PB24, 0); /* CTS1 */
if (pins & ATMEL_UART_DSR)
at91_set_A_periph(AT91_PIN_PB25, 0); /* DSR1 */
if (pins & ATMEL_UART_RTS)
at91_set_A_periph(AT91_PIN_PB26, 0); /* RTS1 */
}
static struct resource uart2_resources[] = {
[0] = {
.start = AT91RM9200_BASE_US2,
.end = AT91RM9200_BASE_US2 + SZ_16K - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = NR_IRQS_LEGACY + AT91RM9200_ID_US2,
.end = NR_IRQS_LEGACY + AT91RM9200_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 at91rm9200_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_PA22, 0); /* RXD2 */
at91_set_A_periph(AT91_PIN_PA23, 1); /* TXD2 */
if (pins & ATMEL_UART_CTS)
at91_set_B_periph(AT91_PIN_PA30, 0); /* CTS2 */
if (pins & ATMEL_UART_RTS)
at91_set_B_periph(AT91_PIN_PA31, 0); /* RTS2 */
}
static struct resource uart3_resources[] = {
[0] = {
.start = AT91RM9200_BASE_US3,
.end = AT91RM9200_BASE_US3 + SZ_16K - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = NR_IRQS_LEGACY + AT91RM9200_ID_US3,
.end = NR_IRQS_LEGACY + AT91RM9200_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 at91rm9200_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_B_periph(AT91_PIN_PA5, 1); /* TXD3 */
at91_set_B_periph(AT91_PIN_PA6, 0); /* RXD3 */
if (pins & ATMEL_UART_CTS)
at91_set_B_periph(AT91_PIN_PB1, 0); /* CTS3 */
if (pins & ATMEL_UART_RTS)
at91_set_B_periph(AT91_PIN_PB0, 0); /* RTS3 */
}
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 = &at91rm9200_dbgu_device;
configure_dbgu_pins();
break;
case AT91RM9200_ID_US0:
pdev = &at91rm9200_uart0_device;
configure_usart0_pins(pins);
break;
case AT91RM9200_ID_US1:
pdev = &at91rm9200_uart1_device;
configure_usart1_pins(pins);
break;
case AT91RM9200_ID_US2:
pdev = &at91rm9200_uart2_device;
configure_usart2_pins(pins);
break;
case AT91RM9200_ID_US3:
pdev = &at91rm9200_uart3_device;
configure_usart3_pins(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
/* -------------------------------------------------------------------- */
/*
* 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_watchdog();
at91_add_device_tc();
return 0;
}
arch_initcall(at91_add_standard_devices);
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