diff options
Diffstat (limited to 'arch/arm/mach-omap2/board-zoom-debugboard.c')
| -rw-r--r-- | arch/arm/mach-omap2/board-zoom-debugboard.c | 160 |
1 files changed, 160 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/board-zoom-debugboard.c b/arch/arm/mach-omap2/board-zoom-debugboard.c new file mode 100644 index 000000000000..bac5c4321ff7 --- /dev/null +++ b/arch/arm/mach-omap2/board-zoom-debugboard.c @@ -0,0 +1,160 @@ +/* + * Copyright (C) 2009 Texas Instruments Inc. + * Mikkel Christensen <mlc@ti.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/gpio.h> +#include <linux/serial_8250.h> +#include <linux/smsc911x.h> + +#include <mach/gpmc.h> + +#define ZOOM2_SMSC911X_CS 7 +#define ZOOM2_SMSC911X_GPIO 158 +#define ZOOM2_QUADUART_CS 3 +#define ZOOM2_QUADUART_GPIO 102 +#define QUART_CLK 1843200 +#define DEBUG_BASE 0x08000000 +#define ZOOM2_ETHR_START DEBUG_BASE + +static struct resource zoom2_smsc911x_resources[] = { + [0] = { + .start = ZOOM2_ETHR_START, + .end = ZOOM2_ETHR_START + SZ_4K, + .flags = IORESOURCE_MEM, + }, + [1] = { + .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWLEVEL, + }, +}; + +static struct smsc911x_platform_config zoom2_smsc911x_config = { + .irq_polarity = SMSC911X_IRQ_POLARITY_ACTIVE_LOW, + .irq_type = SMSC911X_IRQ_TYPE_OPEN_DRAIN, + .flags = SMSC911X_USE_32BIT, + .phy_interface = PHY_INTERFACE_MODE_MII, +}; + +static struct platform_device zoom2_smsc911x_device = { + .name = "smsc911x", + .id = -1, + .num_resources = ARRAY_SIZE(zoom2_smsc911x_resources), + .resource = zoom2_smsc911x_resources, + .dev = { + .platform_data = &zoom2_smsc911x_config, + }, +}; + +static inline void __init zoom2_init_smsc911x(void) +{ + int eth_cs; + unsigned long cs_mem_base; + int eth_gpio = 0; + + eth_cs = ZOOM2_SMSC911X_CS; + + if (gpmc_cs_request(eth_cs, SZ_16M, &cs_mem_base) < 0) { + printk(KERN_ERR "Failed to request GPMC mem for smsc911x\n"); + return; + } + + zoom2_smsc911x_resources[0].start = cs_mem_base + 0x0; + zoom2_smsc911x_resources[0].end = cs_mem_base + 0xff; + + eth_gpio = ZOOM2_SMSC911X_GPIO; + + zoom2_smsc911x_resources[1].start = OMAP_GPIO_IRQ(eth_gpio); + + if (gpio_request(eth_gpio, "smsc911x irq") < 0) { + printk(KERN_ERR "Failed to request GPIO%d for smsc911x IRQ\n", + eth_gpio); + return; + } + gpio_direction_input(eth_gpio); +} + +static struct plat_serial8250_port serial_platform_data[] = { + { + .mapbase = 0x10000000, + .irq = OMAP_GPIO_IRQ(102), + .flags = UPF_BOOT_AUTOCONF|UPF_IOREMAP|UPF_SHARE_IRQ, + .iotype = UPIO_MEM, + .regshift = 1, + .uartclk = QUART_CLK, + }, { + .flags = 0 + } +}; + +static struct platform_device zoom2_debugboard_serial_device = { + .name = "serial8250", + .id = PLAT8250_DEV_PLATFORM1, + .dev = { + .platform_data = serial_platform_data, + }, +}; + +static inline void __init zoom2_init_quaduart(void) +{ + int quart_cs; + unsigned long cs_mem_base; + int quart_gpio = 0; + + quart_cs = ZOOM2_QUADUART_CS; + + if (gpmc_cs_request(quart_cs, SZ_1M, &cs_mem_base) < 0) { + printk(KERN_ERR "Failed to request GPMC mem" + "for Quad UART(TL16CP754C)\n"); + return; + } + + quart_gpio = ZOOM2_QUADUART_GPIO; + + if (gpio_request(quart_gpio, "TL16CP754C GPIO") < 0) { + printk(KERN_ERR "Failed to request GPIO%d for TL16CP754C\n", + quart_gpio); + return; + } + gpio_direction_input(quart_gpio); +} + +static inline int omap_zoom2_debugboard_detect(void) +{ + int debug_board_detect = 0; + + debug_board_detect = ZOOM2_SMSC911X_GPIO; + + if (gpio_request(debug_board_detect, "Zoom2 debug board detect") < 0) { + printk(KERN_ERR "Failed to request GPIO%d for Zoom2 debug" + "board detect\n", debug_board_detect); + return 0; + } + gpio_direction_input(debug_board_detect); + + if (!gpio_get_value(debug_board_detect)) { + gpio_free(debug_board_detect); + return 0; + } + return 1; +} + +static struct platform_device *zoom2_devices[] __initdata = { + &zoom2_smsc911x_device, + &zoom2_debugboard_serial_device, +}; + +int __init omap_zoom2_debugboard_init(void) +{ + if (!omap_zoom2_debugboard_detect()) + return 0; + + zoom2_init_smsc911x(); + zoom2_init_quaduart(); + return platform_add_devices(zoom2_devices, ARRAY_SIZE(zoom2_devices)); +} |