162 lines
3.3 KiB
C
162 lines
3.3 KiB
C
/*
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* s6105 platform devices
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*
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* Copyright (c) 2009 emlix GmbH
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*/
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#include <linux/kernel.h>
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#include <linux/gpio.h>
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#include <linux/init.h>
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#include <linux/irq.h>
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#include <linux/phy.h>
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#include <linux/platform_device.h>
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#include <linux/serial.h>
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#include <linux/serial_8250.h>
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#include <variant/hardware.h>
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#include <variant/dmac.h>
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#include <platform/gpio.h>
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#define GPIO3_INTNUM 3
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#define UART_INTNUM 4
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#define GMAC_INTNUM 5
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static const signed char gpio3_irq_mappings[] = {
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S6_INTC_GPIO(3),
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-1
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};
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static const signed char uart_irq_mappings[] = {
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S6_INTC_UART(0),
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S6_INTC_UART(1),
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-1,
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};
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static const signed char gmac_irq_mappings[] = {
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S6_INTC_GMAC_STAT,
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S6_INTC_GMAC_ERR,
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S6_INTC_DMA_HOSTTERMCNT(0),
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S6_INTC_DMA_HOSTTERMCNT(1),
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-1
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};
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const signed char *platform_irq_mappings[NR_IRQS] = {
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[GPIO3_INTNUM] = gpio3_irq_mappings,
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[UART_INTNUM] = uart_irq_mappings,
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[GMAC_INTNUM] = gmac_irq_mappings,
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};
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static struct plat_serial8250_port serial_platform_data[] = {
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{
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.membase = (void *)S6_REG_UART + 0x0000,
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.mapbase = S6_REG_UART + 0x0000,
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.irq = UART_INTNUM,
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.uartclk = S6_SCLK,
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.regshift = 2,
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.iotype = SERIAL_IO_MEM,
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.flags = ASYNC_BOOT_AUTOCONF | ASYNC_SKIP_TEST,
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},
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{
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.membase = (void *)S6_REG_UART + 0x1000,
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.mapbase = S6_REG_UART + 0x1000,
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.irq = UART_INTNUM,
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.uartclk = S6_SCLK,
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.regshift = 2,
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.iotype = SERIAL_IO_MEM,
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.flags = ASYNC_BOOT_AUTOCONF | ASYNC_SKIP_TEST,
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},
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{ },
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};
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static struct resource s6_gmac_resource[] = {
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{
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.name = "mem",
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.start = (resource_size_t)S6_REG_GMAC,
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.end = (resource_size_t)S6_REG_GMAC + 0x10000 - 1,
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.flags = IORESOURCE_MEM,
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},
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{
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.name = "dma",
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.start = (resource_size_t)
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DMA_CHNL(S6_REG_HIFDMA, S6_HIFDMA_GMACTX),
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.end = (resource_size_t)
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DMA_CHNL(S6_REG_HIFDMA, S6_HIFDMA_GMACTX) + 0x100 - 1,
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.flags = IORESOURCE_DMA,
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},
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{
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.name = "dma",
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.start = (resource_size_t)
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DMA_CHNL(S6_REG_HIFDMA, S6_HIFDMA_GMACRX),
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.end = (resource_size_t)
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DMA_CHNL(S6_REG_HIFDMA, S6_HIFDMA_GMACRX) + 0x100 - 1,
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.flags = IORESOURCE_DMA,
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},
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{
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.name = "io",
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.start = (resource_size_t)S6_MEM_GMAC,
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.end = (resource_size_t)S6_MEM_GMAC + 0x2000000 - 1,
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.flags = IORESOURCE_IO,
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},
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{
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.name = "irq",
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.start = (resource_size_t)GMAC_INTNUM,
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.flags = IORESOURCE_IRQ,
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},
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{
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.name = "irq",
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.start = (resource_size_t)PHY_POLL,
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.flags = IORESOURCE_IRQ,
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},
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};
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static int __init prepare_phy_irq(int pin)
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{
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int irq;
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if (gpio_request(pin, "s6gmac_phy") < 0)
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goto fail;
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if (gpio_direction_input(pin) < 0)
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goto free;
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irq = gpio_to_irq(pin);
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if (irq < 0)
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goto free;
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if (set_irq_type(irq, IRQ_TYPE_LEVEL_LOW) < 0)
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goto free;
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return irq;
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free:
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gpio_free(pin);
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fail:
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return PHY_POLL;
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}
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static struct platform_device platform_devices[] = {
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{
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.name = "serial8250",
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.id = PLAT8250_DEV_PLATFORM,
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.dev = {
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.platform_data = serial_platform_data,
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},
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},
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{
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.name = "s6gmac",
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.id = 0,
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.resource = s6_gmac_resource,
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.num_resources = ARRAY_SIZE(s6_gmac_resource),
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},
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{
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I2C_BOARD_INFO("m41t62", S6I2C_ADDR_M41T62),
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},
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};
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static int __init device_init(void)
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{
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int i;
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s6_gmac_resource[5].start = prepare_phy_irq(GPIO_PHY_IRQ);
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for (i = 0; i < ARRAY_SIZE(platform_devices); i++)
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platform_device_register(&platform_devices[i]);
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return 0;
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}
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arch_initcall_sync(device_init);
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