forked from Minki/linux
16074b669e
New timings are based on application note "NAND Flash Support on AT91SAM9 Microcontrollers" available at http://atmel.com/dyn/resources/prod_documents/doc6255.pdf). Signed-off-by: Patrice Vilchez <patrice.vilchez@atmel.com> Acked-by: Andrew Victor <linux@maxim.org.za> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
1027 lines
26 KiB
C
1027 lines
26 KiB
C
/*
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* Copyright (C) 2007 Atmel Corporation
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file COPYING in the main directory of this archive for
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* more details.
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*/
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#include <asm/mach/arch.h>
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#include <asm/mach/map.h>
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#include <linux/dma-mapping.h>
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#include <linux/platform_device.h>
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#include <linux/i2c-gpio.h>
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#include <linux/fb.h>
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#include <video/atmel_lcdc.h>
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#include <asm/arch/board.h>
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#include <asm/arch/gpio.h>
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#include <asm/arch/at91sam9rl.h>
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#include <asm/arch/at91sam9rl_matrix.h>
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#include <asm/arch/at91sam9_smc.h>
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#include "generic.h"
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/* --------------------------------------------------------------------
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* USB HS Device (Gadget)
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* -------------------------------------------------------------------- */
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#if defined(CONFIG_USB_GADGET_ATMEL_USBA) || defined(CONFIG_USB_GADGET_ATMEL_USBA_MODULE)
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static struct resource usba_udc_resources[] = {
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[0] = {
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.start = AT91SAM9RL_UDPHS_FIFO,
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.end = AT91SAM9RL_UDPHS_FIFO + SZ_512K - 1,
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.flags = IORESOURCE_MEM,
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},
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[1] = {
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.start = AT91SAM9RL_BASE_UDPHS,
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.end = AT91SAM9RL_BASE_UDPHS + SZ_1K - 1,
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.flags = IORESOURCE_MEM,
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},
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[2] = {
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.start = AT91SAM9RL_ID_UDPHS,
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.end = AT91SAM9RL_ID_UDPHS,
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.flags = IORESOURCE_IRQ,
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},
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};
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#define EP(nam, idx, maxpkt, maxbk, dma, isoc) \
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[idx] = { \
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.name = nam, \
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.index = idx, \
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.fifo_size = maxpkt, \
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.nr_banks = maxbk, \
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.can_dma = dma, \
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.can_isoc = isoc, \
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}
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static struct usba_ep_data usba_udc_ep[] __initdata = {
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EP("ep0", 0, 64, 1, 0, 0),
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EP("ep1", 1, 1024, 2, 1, 1),
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EP("ep2", 2, 1024, 2, 1, 1),
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EP("ep3", 3, 1024, 3, 1, 0),
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EP("ep4", 4, 1024, 3, 1, 0),
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EP("ep5", 5, 1024, 3, 1, 1),
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EP("ep6", 6, 1024, 3, 1, 1),
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};
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#undef EP
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/*
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* pdata doesn't have room for any endpoints, so we need to
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* append room for the ones we need right after it.
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*/
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static struct {
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struct usba_platform_data pdata;
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struct usba_ep_data ep[7];
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} usba_udc_data;
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static struct platform_device at91_usba_udc_device = {
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.name = "atmel_usba_udc",
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.id = -1,
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.dev = {
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.platform_data = &usba_udc_data.pdata,
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},
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.resource = usba_udc_resources,
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.num_resources = ARRAY_SIZE(usba_udc_resources),
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};
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void __init at91_add_device_usba(struct usba_platform_data *data)
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{
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/*
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* Invalid pins are 0 on AT91, but the usba driver is shared
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* with AVR32, which use negative values instead. Once/if
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* gpio_is_valid() is ported to AT91, revisit this code.
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*/
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usba_udc_data.pdata.vbus_pin = -EINVAL;
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usba_udc_data.pdata.num_ep = ARRAY_SIZE(usba_udc_ep);
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memcpy(usba_udc_data.ep, usba_udc_ep, sizeof(usba_udc_ep));;
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if (data && data->vbus_pin > 0) {
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at91_set_gpio_input(data->vbus_pin, 0);
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at91_set_deglitch(data->vbus_pin, 1);
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usba_udc_data.pdata.vbus_pin = data->vbus_pin;
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}
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/* Pullup pin is handled internally by USB device peripheral */
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/* Clocks */
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at91_clock_associate("utmi_clk", &at91_usba_udc_device.dev, "hclk");
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at91_clock_associate("udphs_clk", &at91_usba_udc_device.dev, "pclk");
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platform_device_register(&at91_usba_udc_device);
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}
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#else
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void __init at91_add_device_usba(struct usba_platform_data *data) {}
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#endif
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/* --------------------------------------------------------------------
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* MMC / SD
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* -------------------------------------------------------------------- */
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#if defined(CONFIG_MMC_AT91) || defined(CONFIG_MMC_AT91_MODULE)
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static u64 mmc_dmamask = DMA_BIT_MASK(32);
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static struct at91_mmc_data mmc_data;
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static struct resource mmc_resources[] = {
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[0] = {
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.start = AT91SAM9RL_BASE_MCI,
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.end = AT91SAM9RL_BASE_MCI + SZ_16K - 1,
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.flags = IORESOURCE_MEM,
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},
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[1] = {
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.start = AT91SAM9RL_ID_MCI,
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.end = AT91SAM9RL_ID_MCI,
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.flags = IORESOURCE_IRQ,
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},
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};
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static struct platform_device at91sam9rl_mmc_device = {
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.name = "at91_mci",
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.id = -1,
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.dev = {
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.dma_mask = &mmc_dmamask,
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.coherent_dma_mask = DMA_BIT_MASK(32),
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.platform_data = &mmc_data,
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},
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.resource = mmc_resources,
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.num_resources = ARRAY_SIZE(mmc_resources),
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};
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void __init at91_add_device_mmc(short mmc_id, struct at91_mmc_data *data)
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{
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if (!data)
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return;
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/* input/irq */
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if (data->det_pin) {
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at91_set_gpio_input(data->det_pin, 1);
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at91_set_deglitch(data->det_pin, 1);
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}
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if (data->wp_pin)
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at91_set_gpio_input(data->wp_pin, 1);
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if (data->vcc_pin)
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at91_set_gpio_output(data->vcc_pin, 0);
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/* CLK */
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at91_set_A_periph(AT91_PIN_PA2, 0);
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/* CMD */
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at91_set_A_periph(AT91_PIN_PA1, 1);
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/* DAT0, maybe DAT1..DAT3 */
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at91_set_A_periph(AT91_PIN_PA0, 1);
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if (data->wire4) {
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at91_set_A_periph(AT91_PIN_PA3, 1);
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at91_set_A_periph(AT91_PIN_PA4, 1);
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at91_set_A_periph(AT91_PIN_PA5, 1);
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}
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mmc_data = *data;
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platform_device_register(&at91sam9rl_mmc_device);
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}
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#else
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void __init at91_add_device_mmc(short mmc_id, struct at91_mmc_data *data) {}
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#endif
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/* --------------------------------------------------------------------
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* NAND / SmartMedia
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* -------------------------------------------------------------------- */
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#if defined(CONFIG_MTD_NAND_AT91) || defined(CONFIG_MTD_NAND_AT91_MODULE)
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static struct at91_nand_data nand_data;
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#define NAND_BASE AT91_CHIPSELECT_3
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static struct resource nand_resources[] = {
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[0] = {
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.start = NAND_BASE,
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.end = NAND_BASE + SZ_256M - 1,
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.flags = IORESOURCE_MEM,
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},
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[1] = {
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.start = AT91_BASE_SYS + AT91_ECC,
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.end = AT91_BASE_SYS + AT91_ECC + SZ_512 - 1,
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.flags = IORESOURCE_MEM,
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}
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};
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static struct platform_device at91_nand_device = {
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.name = "at91_nand",
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.id = -1,
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.dev = {
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.platform_data = &nand_data,
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},
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.resource = nand_resources,
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.num_resources = ARRAY_SIZE(nand_resources),
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};
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void __init at91_add_device_nand(struct at91_nand_data *data)
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{
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unsigned long csa;
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if (!data)
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return;
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csa = at91_sys_read(AT91_MATRIX_EBICSA);
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at91_sys_write(AT91_MATRIX_EBICSA, csa | AT91_MATRIX_CS3A_SMC_SMARTMEDIA);
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/* set the bus interface characteristics */
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at91_sys_write(AT91_SMC_SETUP(3), AT91_SMC_NWESETUP_(1) | AT91_SMC_NCS_WRSETUP_(0)
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| AT91_SMC_NRDSETUP_(1) | AT91_SMC_NCS_RDSETUP_(0));
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at91_sys_write(AT91_SMC_PULSE(3), AT91_SMC_NWEPULSE_(3) | AT91_SMC_NCS_WRPULSE_(3)
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| AT91_SMC_NRDPULSE_(3) | AT91_SMC_NCS_RDPULSE_(3));
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at91_sys_write(AT91_SMC_CYCLE(3), AT91_SMC_NWECYCLE_(5) | AT91_SMC_NRDCYCLE_(5));
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at91_sys_write(AT91_SMC_MODE(3), AT91_SMC_DBW_8 | AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE | AT91_SMC_TDF_(2));
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/* enable pin */
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if (data->enable_pin)
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at91_set_gpio_output(data->enable_pin, 1);
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/* ready/busy pin */
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if (data->rdy_pin)
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at91_set_gpio_input(data->rdy_pin, 1);
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/* card detect pin */
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if (data->det_pin)
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at91_set_gpio_input(data->det_pin, 1);
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at91_set_A_periph(AT91_PIN_PB4, 0); /* NANDOE */
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at91_set_A_periph(AT91_PIN_PB5, 0); /* NANDWE */
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nand_data = *data;
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platform_device_register(&at91_nand_device);
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}
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#else
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void __init at91_add_device_nand(struct at91_nand_data *data) {}
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#endif
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/* --------------------------------------------------------------------
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* TWI (i2c)
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* -------------------------------------------------------------------- */
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/*
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* Prefer the GPIO code since the TWI controller isn't robust
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* (gets overruns and underruns under load) and can only issue
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* repeated STARTs in one scenario (the driver doesn't yet handle them).
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*/
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#if defined(CONFIG_I2C_GPIO) || defined(CONFIG_I2C_GPIO_MODULE)
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static struct i2c_gpio_platform_data pdata = {
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.sda_pin = AT91_PIN_PA23,
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.sda_is_open_drain = 1,
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.scl_pin = AT91_PIN_PA24,
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.scl_is_open_drain = 1,
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.udelay = 2, /* ~100 kHz */
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};
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static struct platform_device at91sam9rl_twi_device = {
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.name = "i2c-gpio",
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.id = -1,
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.dev.platform_data = &pdata,
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};
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void __init at91_add_device_i2c(struct i2c_board_info *devices, int nr_devices)
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{
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at91_set_GPIO_periph(AT91_PIN_PA23, 1); /* TWD (SDA) */
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at91_set_multi_drive(AT91_PIN_PA23, 1);
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at91_set_GPIO_periph(AT91_PIN_PA24, 1); /* TWCK (SCL) */
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at91_set_multi_drive(AT91_PIN_PA24, 1);
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i2c_register_board_info(0, devices, nr_devices);
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platform_device_register(&at91sam9rl_twi_device);
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}
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#elif defined(CONFIG_I2C_AT91) || defined(CONFIG_I2C_AT91_MODULE)
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static struct resource twi_resources[] = {
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[0] = {
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.start = AT91SAM9RL_BASE_TWI0,
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.end = AT91SAM9RL_BASE_TWI0 + SZ_16K - 1,
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.flags = IORESOURCE_MEM,
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},
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[1] = {
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.start = AT91SAM9RL_ID_TWI0,
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.end = AT91SAM9RL_ID_TWI0,
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.flags = IORESOURCE_IRQ,
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},
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};
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static struct platform_device at91sam9rl_twi_device = {
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.name = "at91_i2c",
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.id = -1,
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.resource = twi_resources,
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.num_resources = ARRAY_SIZE(twi_resources),
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};
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void __init at91_add_device_i2c(struct i2c_board_info *devices, int nr_devices)
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{
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/* pins used for TWI interface */
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at91_set_A_periph(AT91_PIN_PA23, 0); /* TWD */
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at91_set_multi_drive(AT91_PIN_PA23, 1);
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at91_set_A_periph(AT91_PIN_PA24, 0); /* TWCK */
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at91_set_multi_drive(AT91_PIN_PA24, 1);
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i2c_register_board_info(0, devices, nr_devices);
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platform_device_register(&at91sam9rl_twi_device);
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}
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#else
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void __init at91_add_device_i2c(struct i2c_board_info *devices, int nr_devices) {}
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#endif
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/* --------------------------------------------------------------------
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* SPI
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* -------------------------------------------------------------------- */
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#if defined(CONFIG_SPI_ATMEL) || defined(CONFIG_SPI_ATMEL_MODULE)
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static u64 spi_dmamask = DMA_BIT_MASK(32);
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static struct resource spi_resources[] = {
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[0] = {
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.start = AT91SAM9RL_BASE_SPI,
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.end = AT91SAM9RL_BASE_SPI + SZ_16K - 1,
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.flags = IORESOURCE_MEM,
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},
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[1] = {
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.start = AT91SAM9RL_ID_SPI,
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.end = AT91SAM9RL_ID_SPI,
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.flags = IORESOURCE_IRQ,
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},
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};
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static struct platform_device at91sam9rl_spi_device = {
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.name = "atmel_spi",
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.id = 0,
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.dev = {
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.dma_mask = &spi_dmamask,
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.coherent_dma_mask = DMA_BIT_MASK(32),
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},
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.resource = spi_resources,
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.num_resources = ARRAY_SIZE(spi_resources),
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};
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static const unsigned spi_standard_cs[4] = { AT91_PIN_PA28, AT91_PIN_PB7, AT91_PIN_PD8, AT91_PIN_PD9 };
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void __init at91_add_device_spi(struct spi_board_info *devices, int nr_devices)
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{
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int i;
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unsigned long cs_pin;
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at91_set_A_periph(AT91_PIN_PA25, 0); /* MISO */
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at91_set_A_periph(AT91_PIN_PA26, 0); /* MOSI */
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at91_set_A_periph(AT91_PIN_PA27, 0); /* SPCK */
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/* Enable SPI chip-selects */
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for (i = 0; i < nr_devices; i++) {
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if (devices[i].controller_data)
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cs_pin = (unsigned long) devices[i].controller_data;
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else
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cs_pin = spi_standard_cs[devices[i].chip_select];
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/* enable chip-select pin */
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at91_set_gpio_output(cs_pin, 1);
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/* pass chip-select pin to driver */
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devices[i].controller_data = (void *) cs_pin;
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}
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spi_register_board_info(devices, nr_devices);
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platform_device_register(&at91sam9rl_spi_device);
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}
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#else
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void __init at91_add_device_spi(struct spi_board_info *devices, int nr_devices) {}
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#endif
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/* --------------------------------------------------------------------
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* LCD Controller
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* -------------------------------------------------------------------- */
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#if defined(CONFIG_FB_ATMEL) || defined(CONFIG_FB_ATMEL_MODULE)
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static u64 lcdc_dmamask = DMA_BIT_MASK(32);
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static struct atmel_lcdfb_info lcdc_data;
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static struct resource lcdc_resources[] = {
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[0] = {
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.start = AT91SAM9RL_LCDC_BASE,
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.end = AT91SAM9RL_LCDC_BASE + SZ_4K - 1,
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.flags = IORESOURCE_MEM,
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},
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[1] = {
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.start = AT91SAM9RL_ID_LCDC,
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.end = AT91SAM9RL_ID_LCDC,
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.flags = IORESOURCE_IRQ,
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},
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};
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static struct platform_device at91_lcdc_device = {
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.name = "atmel_lcdfb",
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.id = 0,
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.dev = {
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.dma_mask = &lcdc_dmamask,
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.coherent_dma_mask = DMA_BIT_MASK(32),
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.platform_data = &lcdc_data,
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},
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.resource = lcdc_resources,
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.num_resources = ARRAY_SIZE(lcdc_resources),
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};
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void __init at91_add_device_lcdc(struct atmel_lcdfb_info *data)
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{
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if (!data) {
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return;
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}
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at91_set_B_periph(AT91_PIN_PC1, 0); /* LCDPWR */
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at91_set_A_periph(AT91_PIN_PC5, 0); /* LCDHSYNC */
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at91_set_A_periph(AT91_PIN_PC6, 0); /* LCDDOTCK */
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at91_set_A_periph(AT91_PIN_PC7, 0); /* LCDDEN */
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at91_set_A_periph(AT91_PIN_PC3, 0); /* LCDCC */
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at91_set_B_periph(AT91_PIN_PC9, 0); /* LCDD3 */
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at91_set_B_periph(AT91_PIN_PC10, 0); /* LCDD4 */
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at91_set_B_periph(AT91_PIN_PC11, 0); /* LCDD5 */
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at91_set_B_periph(AT91_PIN_PC12, 0); /* LCDD6 */
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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 */
|
|
|
|
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);
|