| /***************************************************************************/ |
| |
| /* |
| * linux/arch/m68knommu/platform/527x/config.c |
| * |
| * Sub-architcture dependant initialization code for the Freescale |
| * 5270/5271 CPUs. |
| * |
| * Copyright (C) 1999-2004, Greg Ungerer (gerg@snapgear.com) |
| * Copyright (C) 2001-2004, SnapGear Inc. (www.snapgear.com) |
| */ |
| |
| /***************************************************************************/ |
| |
| #include <linux/kernel.h> |
| #include <linux/param.h> |
| #include <linux/init.h> |
| #include <linux/io.h> |
| #include <linux/spi/spi.h> |
| #include <linux/gpio.h> |
| #include <asm/machdep.h> |
| #include <asm/coldfire.h> |
| #include <asm/mcfsim.h> |
| #include <asm/mcfuart.h> |
| #include <asm/mcfqspi.h> |
| |
| /***************************************************************************/ |
| |
| static struct mcf_platform_uart m527x_uart_platform[] = { |
| { |
| .mapbase = MCF_MBAR + MCFUART_BASE1, |
| .irq = MCFINT_VECBASE + MCFINT_UART0, |
| }, |
| { |
| .mapbase = MCF_MBAR + MCFUART_BASE2, |
| .irq = MCFINT_VECBASE + MCFINT_UART1, |
| }, |
| { |
| .mapbase = MCF_MBAR + MCFUART_BASE3, |
| .irq = MCFINT_VECBASE + MCFINT_UART2, |
| }, |
| { }, |
| }; |
| |
| static struct platform_device m527x_uart = { |
| .name = "mcfuart", |
| .id = 0, |
| .dev.platform_data = m527x_uart_platform, |
| }; |
| |
| static struct resource m527x_fec0_resources[] = { |
| { |
| .start = MCF_MBAR + 0x1000, |
| .end = MCF_MBAR + 0x1000 + 0x7ff, |
| .flags = IORESOURCE_MEM, |
| }, |
| { |
| .start = 64 + 23, |
| .end = 64 + 23, |
| .flags = IORESOURCE_IRQ, |
| }, |
| { |
| .start = 64 + 27, |
| .end = 64 + 27, |
| .flags = IORESOURCE_IRQ, |
| }, |
| { |
| .start = 64 + 29, |
| .end = 64 + 29, |
| .flags = IORESOURCE_IRQ, |
| }, |
| }; |
| |
| static struct resource m527x_fec1_resources[] = { |
| { |
| .start = MCF_MBAR + 0x1800, |
| .end = MCF_MBAR + 0x1800 + 0x7ff, |
| .flags = IORESOURCE_MEM, |
| }, |
| { |
| .start = 128 + 23, |
| .end = 128 + 23, |
| .flags = IORESOURCE_IRQ, |
| }, |
| { |
| .start = 128 + 27, |
| .end = 128 + 27, |
| .flags = IORESOURCE_IRQ, |
| }, |
| { |
| .start = 128 + 29, |
| .end = 128 + 29, |
| .flags = IORESOURCE_IRQ, |
| }, |
| }; |
| |
| static struct platform_device m527x_fec[] = { |
| { |
| .name = "fec", |
| .id = 0, |
| .num_resources = ARRAY_SIZE(m527x_fec0_resources), |
| .resource = m527x_fec0_resources, |
| }, |
| { |
| .name = "fec", |
| .id = 1, |
| .num_resources = ARRAY_SIZE(m527x_fec1_resources), |
| .resource = m527x_fec1_resources, |
| }, |
| }; |
| |
| #if defined(CONFIG_SPI_COLDFIRE_QSPI) || defined(CONFIG_SPI_COLDFIRE_QSPI_MODULE) |
| static struct resource m527x_qspi_resources[] = { |
| { |
| .start = MCFQSPI_IOBASE, |
| .end = MCFQSPI_IOBASE + MCFQSPI_IOSIZE - 1, |
| .flags = IORESOURCE_MEM, |
| }, |
| { |
| .start = MCFINT_VECBASE + MCFINT_QSPI, |
| .end = MCFINT_VECBASE + MCFINT_QSPI, |
| .flags = IORESOURCE_IRQ, |
| }, |
| }; |
| |
| #if defined(CONFIG_M5271) |
| #define MCFQSPI_CS0 91 |
| #define MCFQSPI_CS1 92 |
| #define MCFQSPI_CS2 99 |
| #define MCFQSPI_CS3 103 |
| #elif defined(CONFIG_M5275) |
| #define MCFQSPI_CS0 59 |
| #define MCFQSPI_CS1 60 |
| #define MCFQSPI_CS2 61 |
| #define MCFQSPI_CS3 62 |
| #endif |
| |
| static int m527x_cs_setup(struct mcfqspi_cs_control *cs_control) |
| { |
| int status; |
| |
| status = gpio_request(MCFQSPI_CS0, "MCFQSPI_CS0"); |
| if (status) { |
| pr_debug("gpio_request for MCFQSPI_CS0 failed\n"); |
| goto fail0; |
| } |
| status = gpio_direction_output(MCFQSPI_CS0, 1); |
| if (status) { |
| pr_debug("gpio_direction_output for MCFQSPI_CS0 failed\n"); |
| goto fail1; |
| } |
| |
| status = gpio_request(MCFQSPI_CS1, "MCFQSPI_CS1"); |
| if (status) { |
| pr_debug("gpio_request for MCFQSPI_CS1 failed\n"); |
| goto fail1; |
| } |
| status = gpio_direction_output(MCFQSPI_CS1, 1); |
| if (status) { |
| pr_debug("gpio_direction_output for MCFQSPI_CS1 failed\n"); |
| goto fail2; |
| } |
| |
| status = gpio_request(MCFQSPI_CS2, "MCFQSPI_CS2"); |
| if (status) { |
| pr_debug("gpio_request for MCFQSPI_CS2 failed\n"); |
| goto fail2; |
| } |
| status = gpio_direction_output(MCFQSPI_CS2, 1); |
| if (status) { |
| pr_debug("gpio_direction_output for MCFQSPI_CS2 failed\n"); |
| goto fail3; |
| } |
| |
| status = gpio_request(MCFQSPI_CS3, "MCFQSPI_CS3"); |
| if (status) { |
| pr_debug("gpio_request for MCFQSPI_CS3 failed\n"); |
| goto fail3; |
| } |
| status = gpio_direction_output(MCFQSPI_CS3, 1); |
| if (status) { |
| pr_debug("gpio_direction_output for MCFQSPI_CS3 failed\n"); |
| goto fail4; |
| } |
| |
| return 0; |
| |
| fail4: |
| gpio_free(MCFQSPI_CS3); |
| fail3: |
| gpio_free(MCFQSPI_CS2); |
| fail2: |
| gpio_free(MCFQSPI_CS1); |
| fail1: |
| gpio_free(MCFQSPI_CS0); |
| fail0: |
| return status; |
| } |
| |
| static void m527x_cs_teardown(struct mcfqspi_cs_control *cs_control) |
| { |
| gpio_free(MCFQSPI_CS3); |
| gpio_free(MCFQSPI_CS2); |
| gpio_free(MCFQSPI_CS1); |
| gpio_free(MCFQSPI_CS0); |
| } |
| |
| static void m527x_cs_select(struct mcfqspi_cs_control *cs_control, |
| u8 chip_select, bool cs_high) |
| { |
| switch (chip_select) { |
| case 0: |
| gpio_set_value(MCFQSPI_CS0, cs_high); |
| break; |
| case 1: |
| gpio_set_value(MCFQSPI_CS1, cs_high); |
| break; |
| case 2: |
| gpio_set_value(MCFQSPI_CS2, cs_high); |
| break; |
| case 3: |
| gpio_set_value(MCFQSPI_CS3, cs_high); |
| break; |
| } |
| } |
| |
| static void m527x_cs_deselect(struct mcfqspi_cs_control *cs_control, |
| u8 chip_select, bool cs_high) |
| { |
| switch (chip_select) { |
| case 0: |
| gpio_set_value(MCFQSPI_CS0, !cs_high); |
| break; |
| case 1: |
| gpio_set_value(MCFQSPI_CS1, !cs_high); |
| break; |
| case 2: |
| gpio_set_value(MCFQSPI_CS2, !cs_high); |
| break; |
| case 3: |
| gpio_set_value(MCFQSPI_CS3, !cs_high); |
| break; |
| } |
| } |
| |
| static struct mcfqspi_cs_control m527x_cs_control = { |
| .setup = m527x_cs_setup, |
| .teardown = m527x_cs_teardown, |
| .select = m527x_cs_select, |
| .deselect = m527x_cs_deselect, |
| }; |
| |
| static struct mcfqspi_platform_data m527x_qspi_data = { |
| .bus_num = 0, |
| .num_chipselect = 4, |
| .cs_control = &m527x_cs_control, |
| }; |
| |
| static struct platform_device m527x_qspi = { |
| .name = "mcfqspi", |
| .id = 0, |
| .num_resources = ARRAY_SIZE(m527x_qspi_resources), |
| .resource = m527x_qspi_resources, |
| .dev.platform_data = &m527x_qspi_data, |
| }; |
| |
| static void __init m527x_qspi_init(void) |
| { |
| #if defined(CONFIG_M5271) |
| u16 par; |
| |
| /* setup QSPS pins for QSPI with gpio CS control */ |
| writeb(0x1f, MCFGPIO_PAR_QSPI); |
| /* and CS2 & CS3 as gpio */ |
| par = readw(MCFGPIO_PAR_TIMER); |
| par &= 0x3f3f; |
| writew(par, MCFGPIO_PAR_TIMER); |
| #elif defined(CONFIG_M5275) |
| /* setup QSPS pins for QSPI with gpio CS control */ |
| writew(0x003e, MCFGPIO_PAR_QSPI); |
| #endif |
| } |
| #endif /* defined(CONFIG_SPI_COLDFIRE_QSPI) || defined(CONFIG_SPI_COLDFIRE_QSPI_MODULE) */ |
| |
| static struct platform_device *m527x_devices[] __initdata = { |
| &m527x_uart, |
| &m527x_fec[0], |
| #ifdef CONFIG_FEC2 |
| &m527x_fec[1], |
| #endif |
| #if defined(CONFIG_SPI_COLDFIRE_QSPI) || defined(CONFIG_SPI_COLDFIRE_QSPI_MODULE) |
| &m527x_qspi, |
| #endif |
| }; |
| |
| /***************************************************************************/ |
| |
| static void __init m527x_uart_init_line(int line, int irq) |
| { |
| u16 sepmask; |
| |
| if ((line < 0) || (line > 2)) |
| return; |
| |
| /* |
| * External Pin Mask Setting & Enable External Pin for Interface |
| */ |
| sepmask = readw(MCF_IPSBAR + MCF_GPIO_PAR_UART); |
| if (line == 0) |
| sepmask |= UART0_ENABLE_MASK; |
| else if (line == 1) |
| sepmask |= UART1_ENABLE_MASK; |
| else if (line == 2) |
| sepmask |= UART2_ENABLE_MASK; |
| writew(sepmask, MCF_IPSBAR + MCF_GPIO_PAR_UART); |
| } |
| |
| static void __init m527x_uarts_init(void) |
| { |
| const int nrlines = ARRAY_SIZE(m527x_uart_platform); |
| int line; |
| |
| for (line = 0; (line < nrlines); line++) |
| m527x_uart_init_line(line, m527x_uart_platform[line].irq); |
| } |
| |
| /***************************************************************************/ |
| |
| static void __init m527x_fec_init(void) |
| { |
| u16 par; |
| u8 v; |
| |
| /* Set multi-function pins to ethernet mode for fec0 */ |
| #if defined(CONFIG_M5271) |
| v = readb(MCF_IPSBAR + 0x100047); |
| writeb(v | 0xf0, MCF_IPSBAR + 0x100047); |
| #else |
| par = readw(MCF_IPSBAR + 0x100082); |
| writew(par | 0xf00, MCF_IPSBAR + 0x100082); |
| v = readb(MCF_IPSBAR + 0x100078); |
| writeb(v | 0xc0, MCF_IPSBAR + 0x100078); |
| #endif |
| |
| #ifdef CONFIG_FEC2 |
| /* Set multi-function pins to ethernet mode for fec1 */ |
| par = readw(MCF_IPSBAR + 0x100082); |
| writew(par | 0xa0, MCF_IPSBAR + 0x100082); |
| v = readb(MCF_IPSBAR + 0x100079); |
| writeb(v | 0xc0, MCF_IPSBAR + 0x100079); |
| #endif |
| } |
| |
| /***************************************************************************/ |
| |
| static void m527x_cpu_reset(void) |
| { |
| local_irq_disable(); |
| __raw_writeb(MCF_RCR_SWRESET, MCF_IPSBAR + MCF_RCR); |
| } |
| |
| /***************************************************************************/ |
| |
| void __init config_BSP(char *commandp, int size) |
| { |
| mach_reset = m527x_cpu_reset; |
| m527x_uarts_init(); |
| m527x_fec_init(); |
| #if defined(CONFIG_SPI_COLDFIRE_QSPI) || defined(CONFIG_SPI_COLDFIRE_QSPI_MODULE) |
| m527x_qspi_init(); |
| #endif |
| } |
| |
| /***************************************************************************/ |
| |
| static int __init init_BSP(void) |
| { |
| platform_add_devices(m527x_devices, ARRAY_SIZE(m527x_devices)); |
| return 0; |
| } |
| |
| arch_initcall(init_BSP); |
| |
| /***************************************************************************/ |
