diff options
Diffstat (limited to 'kernel/arch/arm/mach-pxa/icontrol.c')
| -rw-r--r-- | kernel/arch/arm/mach-pxa/icontrol.c | 199 |
1 files changed, 199 insertions, 0 deletions
diff --git a/kernel/arch/arm/mach-pxa/icontrol.c b/kernel/arch/arm/mach-pxa/icontrol.c new file mode 100644 index 000000000..c98511c5a --- /dev/null +++ b/kernel/arch/arm/mach-pxa/icontrol.c @@ -0,0 +1,199 @@ +/* + * linux/arch/arm/mach-pxa/icontrol.c + * + * Support for the iControl and SafeTcam platforms from TMT Services + * using the Embedian MXM-8x10 Computer on Module + * + * Copyright (C) 2009 TMT Services & Supplies (Pty) Ltd. + * + * 2010-01-21 Hennie van der Merve <hvdmerwe@tmtservies.co.za> + * + * 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/irq.h> +#include <linux/platform_device.h> +#include <linux/gpio.h> + +#include <asm/mach-types.h> +#include <asm/mach/arch.h> + +#include <mach/pxa320.h> +#include <mach/mxm8x10.h> + +#include <linux/spi/spi.h> +#include <linux/spi/pxa2xx_spi.h> +#include <linux/can/platform/mcp251x.h> + +#include "generic.h" + +#define ICONTROL_MCP251x_nCS1 (15) +#define ICONTROL_MCP251x_nCS2 (16) +#define ICONTROL_MCP251x_nCS3 (17) +#define ICONTROL_MCP251x_nCS4 (24) + +#define ICONTROL_MCP251x_nIRQ1 (74) +#define ICONTROL_MCP251x_nIRQ2 (75) +#define ICONTROL_MCP251x_nIRQ3 (76) +#define ICONTROL_MCP251x_nIRQ4 (77) + +static struct pxa2xx_spi_chip mcp251x_chip_info1 = { + .tx_threshold = 8, + .rx_threshold = 128, + .dma_burst_size = 8, + .timeout = 235, + .gpio_cs = ICONTROL_MCP251x_nCS1 +}; + +static struct pxa2xx_spi_chip mcp251x_chip_info2 = { + .tx_threshold = 8, + .rx_threshold = 128, + .dma_burst_size = 8, + .timeout = 235, + .gpio_cs = ICONTROL_MCP251x_nCS2 +}; + +static struct pxa2xx_spi_chip mcp251x_chip_info3 = { + .tx_threshold = 8, + .rx_threshold = 128, + .dma_burst_size = 8, + .timeout = 235, + .gpio_cs = ICONTROL_MCP251x_nCS3 +}; + +static struct pxa2xx_spi_chip mcp251x_chip_info4 = { + .tx_threshold = 8, + .rx_threshold = 128, + .dma_burst_size = 8, + .timeout = 235, + .gpio_cs = ICONTROL_MCP251x_nCS4 +}; + +static struct mcp251x_platform_data mcp251x_info = { + .oscillator_frequency = 16E6, +}; + +static struct spi_board_info mcp251x_board_info[] = { + { + .modalias = "mcp2515", + .max_speed_hz = 6500000, + .bus_num = 3, + .chip_select = 0, + .platform_data = &mcp251x_info, + .controller_data = &mcp251x_chip_info1, + .irq = PXA_GPIO_TO_IRQ(ICONTROL_MCP251x_nIRQ1) + }, + { + .modalias = "mcp2515", + .max_speed_hz = 6500000, + .bus_num = 3, + .chip_select = 1, + .platform_data = &mcp251x_info, + .controller_data = &mcp251x_chip_info2, + .irq = PXA_GPIO_TO_IRQ(ICONTROL_MCP251x_nIRQ2) + }, + { + .modalias = "mcp2515", + .max_speed_hz = 6500000, + .bus_num = 4, + .chip_select = 0, + .platform_data = &mcp251x_info, + .controller_data = &mcp251x_chip_info3, + .irq = PXA_GPIO_TO_IRQ(ICONTROL_MCP251x_nIRQ3) + }, + { + .modalias = "mcp2515", + .max_speed_hz = 6500000, + .bus_num = 4, + .chip_select = 1, + .platform_data = &mcp251x_info, + .controller_data = &mcp251x_chip_info4, + .irq = PXA_GPIO_TO_IRQ(ICONTROL_MCP251x_nIRQ4) + } +}; + +static struct pxa2xx_spi_master pxa_ssp3_spi_master_info = { + .clock_enable = CKEN_SSP3, + .num_chipselect = 2, + .enable_dma = 1 +}; + +static struct pxa2xx_spi_master pxa_ssp4_spi_master_info = { + .clock_enable = CKEN_SSP4, + .num_chipselect = 2, + .enable_dma = 1 +}; + +struct platform_device pxa_spi_ssp3 = { + .name = "pxa2xx-spi", + .id = 3, + .dev = { + .platform_data = &pxa_ssp3_spi_master_info, + } +}; + +struct platform_device pxa_spi_ssp4 = { + .name = "pxa2xx-spi", + .id = 4, + .dev = { + .platform_data = &pxa_ssp4_spi_master_info, + } +}; + +static struct platform_device *icontrol_spi_devices[] __initdata = { + &pxa_spi_ssp3, + &pxa_spi_ssp4, +}; + +static mfp_cfg_t mfp_can_cfg[] __initdata = { + /* CAN CS lines */ + GPIO15_GPIO, + GPIO16_GPIO, + GPIO17_GPIO, + GPIO24_GPIO, + + /* SPI (SSP3) lines */ + GPIO89_SSP3_SCLK, + GPIO91_SSP3_TXD, + GPIO92_SSP3_RXD, + + /* SPI (SSP4) lines */ + GPIO93_SSP4_SCLK, + GPIO95_SSP4_TXD, + GPIO96_SSP4_RXD, + + /* CAN nIRQ lines */ + GPIO74_GPIO | MFP_LPM_EDGE_RISE, + GPIO75_GPIO | MFP_LPM_EDGE_RISE, + GPIO76_GPIO | MFP_LPM_EDGE_RISE, + GPIO77_GPIO | MFP_LPM_EDGE_RISE +}; + +static void __init icontrol_can_init(void) +{ + pxa3xx_mfp_config(ARRAY_AND_SIZE(mfp_can_cfg)); + platform_add_devices(ARRAY_AND_SIZE(icontrol_spi_devices)); + spi_register_board_info(ARRAY_AND_SIZE(mcp251x_board_info)); +} + +static void __init icontrol_init(void) +{ + mxm_8x10_barebones_init(); + mxm_8x10_usb_host_init(); + mxm_8x10_mmc_init(); + + icontrol_can_init(); +} + +MACHINE_START(ICONTROL, "iControl/SafeTcam boards using Embedian MXM-8x10 CoM") + .atag_offset = 0x100, + .map_io = pxa3xx_map_io, + .nr_irqs = PXA_NR_IRQS, + .init_irq = pxa3xx_init_irq, + .handle_irq = pxa3xx_handle_irq, + .init_time = pxa_timer_init, + .init_machine = icontrol_init, + .restart = pxa_restart, +MACHINE_END |