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202 lines
4.7 KiB
202 lines
4.7 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* linux/arch/arm/mach-pxa/icontrol.c |
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* |
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* Support for the iControl and SafeTcam platforms from TMT Services |
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* using the Embedian MXM-8x10 Computer on Module |
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* |
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* Copyright (C) 2009 TMT Services & Supplies (Pty) Ltd. |
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* |
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* 2010-01-21 Hennie van der Merve <[email protected]> |
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*/ |
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#include <linux/irq.h> |
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#include <linux/platform_device.h> |
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#include <linux/property.h> |
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#include <linux/gpio.h> |
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#include <asm/mach-types.h> |
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#include <asm/mach/arch.h> |
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#include "pxa320.h" |
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#include "mxm8x10.h" |
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#include <linux/spi/spi.h> |
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#include <linux/spi/pxa2xx_spi.h> |
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#include <linux/regulator/machine.h> |
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#include "generic.h" |
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#define ICONTROL_MCP251x_nCS1 (15) |
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#define ICONTROL_MCP251x_nCS2 (16) |
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#define ICONTROL_MCP251x_nCS3 (17) |
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#define ICONTROL_MCP251x_nCS4 (24) |
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#define ICONTROL_MCP251x_nIRQ1 (74) |
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#define ICONTROL_MCP251x_nIRQ2 (75) |
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#define ICONTROL_MCP251x_nIRQ3 (76) |
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#define ICONTROL_MCP251x_nIRQ4 (77) |
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static struct pxa2xx_spi_chip mcp251x_chip_info1 = { |
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.tx_threshold = 8, |
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.rx_threshold = 128, |
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.dma_burst_size = 8, |
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.timeout = 235, |
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.gpio_cs = ICONTROL_MCP251x_nCS1 |
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}; |
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static struct pxa2xx_spi_chip mcp251x_chip_info2 = { |
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.tx_threshold = 8, |
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.rx_threshold = 128, |
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.dma_burst_size = 8, |
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.timeout = 235, |
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.gpio_cs = ICONTROL_MCP251x_nCS2 |
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}; |
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static struct pxa2xx_spi_chip mcp251x_chip_info3 = { |
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.tx_threshold = 8, |
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.rx_threshold = 128, |
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.dma_burst_size = 8, |
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.timeout = 235, |
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.gpio_cs = ICONTROL_MCP251x_nCS3 |
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}; |
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static struct pxa2xx_spi_chip mcp251x_chip_info4 = { |
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.tx_threshold = 8, |
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.rx_threshold = 128, |
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.dma_burst_size = 8, |
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.timeout = 235, |
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.gpio_cs = ICONTROL_MCP251x_nCS4 |
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}; |
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static const struct property_entry mcp251x_properties[] = { |
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PROPERTY_ENTRY_U32("clock-frequency", 16000000), |
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{} |
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}; |
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static const struct software_node mcp251x_node = { |
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.properties = mcp251x_properties, |
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}; |
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static struct spi_board_info mcp251x_board_info[] = { |
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{ |
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.modalias = "mcp2515", |
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.max_speed_hz = 6500000, |
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.bus_num = 3, |
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.chip_select = 0, |
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.swnode = &mcp251x_node, |
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.controller_data = &mcp251x_chip_info1, |
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.irq = PXA_GPIO_TO_IRQ(ICONTROL_MCP251x_nIRQ1) |
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}, |
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{ |
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.modalias = "mcp2515", |
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.max_speed_hz = 6500000, |
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.bus_num = 3, |
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.chip_select = 1, |
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.swnode = &mcp251x_node, |
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.controller_data = &mcp251x_chip_info2, |
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.irq = PXA_GPIO_TO_IRQ(ICONTROL_MCP251x_nIRQ2) |
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}, |
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{ |
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.modalias = "mcp2515", |
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.max_speed_hz = 6500000, |
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.bus_num = 4, |
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.chip_select = 0, |
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.swnode = &mcp251x_node, |
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.controller_data = &mcp251x_chip_info3, |
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.irq = PXA_GPIO_TO_IRQ(ICONTROL_MCP251x_nIRQ3) |
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}, |
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{ |
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.modalias = "mcp2515", |
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.max_speed_hz = 6500000, |
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.bus_num = 4, |
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.chip_select = 1, |
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.swnode = &mcp251x_node, |
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.controller_data = &mcp251x_chip_info4, |
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.irq = PXA_GPIO_TO_IRQ(ICONTROL_MCP251x_nIRQ4) |
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} |
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}; |
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static struct pxa2xx_spi_controller pxa_ssp3_spi_master_info = { |
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.num_chipselect = 2, |
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.enable_dma = 1 |
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}; |
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static struct pxa2xx_spi_controller pxa_ssp4_spi_master_info = { |
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.num_chipselect = 2, |
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.enable_dma = 1 |
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}; |
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struct platform_device pxa_spi_ssp3 = { |
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.name = "pxa2xx-spi", |
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.id = 3, |
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.dev = { |
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.platform_data = &pxa_ssp3_spi_master_info, |
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} |
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}; |
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struct platform_device pxa_spi_ssp4 = { |
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.name = "pxa2xx-spi", |
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.id = 4, |
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.dev = { |
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.platform_data = &pxa_ssp4_spi_master_info, |
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} |
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}; |
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static struct platform_device *icontrol_spi_devices[] __initdata = { |
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&pxa_spi_ssp3, |
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&pxa_spi_ssp4, |
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}; |
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static mfp_cfg_t mfp_can_cfg[] __initdata = { |
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/* CAN CS lines */ |
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GPIO15_GPIO, |
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GPIO16_GPIO, |
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GPIO17_GPIO, |
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GPIO24_GPIO, |
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/* SPI (SSP3) lines */ |
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GPIO89_SSP3_SCLK, |
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GPIO91_SSP3_TXD, |
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GPIO92_SSP3_RXD, |
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/* SPI (SSP4) lines */ |
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GPIO93_SSP4_SCLK, |
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GPIO95_SSP4_TXD, |
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GPIO96_SSP4_RXD, |
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/* CAN nIRQ lines */ |
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GPIO74_GPIO | MFP_LPM_EDGE_RISE, |
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GPIO75_GPIO | MFP_LPM_EDGE_RISE, |
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GPIO76_GPIO | MFP_LPM_EDGE_RISE, |
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GPIO77_GPIO | MFP_LPM_EDGE_RISE |
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}; |
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static void __init icontrol_can_init(void) |
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{ |
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pxa3xx_mfp_config(ARRAY_AND_SIZE(mfp_can_cfg)); |
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platform_add_devices(ARRAY_AND_SIZE(icontrol_spi_devices)); |
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spi_register_board_info(ARRAY_AND_SIZE(mcp251x_board_info)); |
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} |
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static void __init icontrol_init(void) |
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{ |
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mxm_8x10_barebones_init(); |
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mxm_8x10_usb_host_init(); |
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mxm_8x10_mmc_init(); |
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icontrol_can_init(); |
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regulator_has_full_constraints(); |
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} |
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MACHINE_START(ICONTROL, "iControl/SafeTcam boards using Embedian MXM-8x10 CoM") |
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.atag_offset = 0x100, |
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.map_io = pxa3xx_map_io, |
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.nr_irqs = PXA_NR_IRQS, |
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.init_irq = pxa3xx_init_irq, |
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.handle_irq = pxa3xx_handle_irq, |
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.init_time = pxa_timer_init, |
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.init_machine = icontrol_init, |
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.restart = pxa_restart, |
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MACHINE_END
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