/***************************************************************************/ /* * linux/arch/m68knommu/platform/527x/config.c * * Sub-architcture dependent 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 #include #include #include #include #include #include #include #include #include #include /***************************************************************************/ #if defined(CONFIG_SPI_COLDFIRE_QSPI) || defined(CONFIG_SPI_COLDFIRE_QSPI_MODULE) static struct resource m527x_qspi_resources[] = { { .start = MCFQSPI_BASE, .end = MCFQSPI_BASE + MCFQSPI_SIZE - 1, .flags = IORESOURCE_MEM, }, { .start = MCF_IRQ_QSPI, .end = MCF_IRQ_QSPI, .flags = IORESOURCE_IRQ, }, }; 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 = { #if defined(CONFIG_SPI_COLDFIRE_QSPI) || defined(CONFIG_SPI_COLDFIRE_QSPI_MODULE) &m527x_qspi, #endif }; /***************************************************************************/ static void __init m527x_uarts_init(void) { u16 sepmask; /* * External Pin Mask Setting & Enable External Pin for Interface */ sepmask = readw(MCF_IPSBAR + MCF_GPIO_PAR_UART); sepmask |= UART0_ENABLE_MASK | UART1_ENABLE_MASK | UART2_ENABLE_MASK; writew(sepmask, MCF_IPSBAR + MCF_GPIO_PAR_UART); } /***************************************************************************/ 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; mach_sched_init = hw_timer_init; 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); /***************************************************************************/