diff options
Diffstat (limited to 'target/linux/coldfire/files-2.6.31/arch/m68k/coldfire/m547x/devices.c')
| -rw-r--r-- | target/linux/coldfire/files-2.6.31/arch/m68k/coldfire/m547x/devices.c | 176 |
1 files changed, 176 insertions, 0 deletions
diff --git a/target/linux/coldfire/files-2.6.31/arch/m68k/coldfire/m547x/devices.c b/target/linux/coldfire/files-2.6.31/arch/m68k/coldfire/m547x/devices.c new file mode 100644 index 0000000..05a4040 --- /dev/null +++ b/target/linux/coldfire/files-2.6.31/arch/m68k/coldfire/m547x/devices.c @@ -0,0 +1,176 @@ +/* + * arch/m68k/coldfire/m547x/devices.c + * + * Coldfire M547x/M548x Platform Device Configuration + * + * Copyright 2008-2009 Freescale Semiconductor, Inc. All Rights Reserved. + * + * Kurt Mahan <kmahan@freescale.com> + */ +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/platform_device.h> +#include <linux/fsl_devices.h> +#include <linux/spi/spi.h> +#include <linux/i2c.h> + +#include <asm/coldfire.h> +#include <asm/mcfsim.h> + +#ifdef CONFIG_SPI + +#include <asm/mcfqspi.h> +/* + * + * DSPI + * + */ + +/* number of supported SPI selects */ +#define SPI_NUM_CHIPSELECTS 8 + +void coldfire_spi_cs_control(u8 cs, u8 command) +{ + /* nothing special required */ +} + +#if defined(CONFIG_SPI_SPIDEV) || defined(CONFIG_SPI_SPIDEV_MODULE) +static struct coldfire_spi_chip spidev_chip_info = { + .bits_per_word = 8, +}; +#endif + +static struct spi_board_info spi_board_info[] = { +#if defined(CONFIG_SPI_SPIDEV) || defined(CONFIG_SPI_SPIDEV_MODULE) + { + .modalias = "spidev", + .max_speed_hz = 16000000, /* max clk (SCK) speed in HZ */ + .bus_num = 1, + .chip_select = 0, /* CS0 */ + .controller_data = &spidev_chip_info, + } +#endif +}; + +static int spi_irq_list[] = { + /* IRQ, ICR Offset, ICR Val,Mask */ + 64 + ISC_DSPI_OVRFW, ISC_DSPI_OVRFW, 0x18, 0, + 64 + ISC_DSPI_RFOF, ISC_DSPI_RFOF, 0x18, 0, + 64 + ISC_DSPI_RFDF, ISC_DSPI_RFDF, 0x18, 0, + 64 + ISC_DSPI_TFUF, ISC_DSPI_TFUF, 0x18, 0, + 64 + ISC_DSPI_TCF, ISC_DSPI_TCF, 0x18, 0, + 64 + ISC_DSPI_TFFF, ISC_DSPI_TFFF, 0x18, 0, + 64 + ISC_DSPI_EOQF, ISC_DSPI_EOQF, 0x18, 0, + 0,0,0,0, +}; + +static struct coldfire_spi_master coldfire_master_info = { + .bus_num = 1, + .num_chipselect = SPI_NUM_CHIPSELECTS, + .irq_list = spi_irq_list, + .irq_source = 0, /* not used */ + .irq_vector = 0, /* not used */ + .irq_mask = 0, /* not used */ + .irq_lp = 0, /* not used */ + .par_val = 0, /* not used */ + .cs_control = coldfire_spi_cs_control, +}; + +static struct resource coldfire_spi_resources[] = { + [0] = { + .name = "spi-par", + .start = MCF_MBAR + 0x00000a50, /* PAR_DSPI */ + .end = MCF_MBAR + 0x00000a50, /* PAR_DSPI */ + .flags = IORESOURCE_MEM + }, + + [1] = { + .name = "spi-module", + .start = MCF_MBAR + 0x00008a00, /* DSPI MCR Base */ + .end = MCF_MBAR + 0x00008ab8, /* DSPI mem map end */ + .flags = IORESOURCE_MEM + }, + + [2] = { + .name = "spi-int-level", + .start = MCF_MBAR + 0x740, /* ICR start */ + .end = MCF_MBAR + 0x740 + ISC_DSPI_EOQF, /* ICR end */ + .flags = IORESOURCE_MEM + }, + + [3] = { + .name = "spi-int-mask", + .start = MCF_MBAR + 0x70c, /* IMRL */ + .end = MCF_MBAR + 0x70c, /* IMRL */ + .flags = IORESOURCE_MEM + } +}; + +static struct platform_device coldfire_spi = { + .name = "spi_coldfire", + .id = -1, + .resource = coldfire_spi_resources, + .num_resources = ARRAY_SIZE(coldfire_spi_resources), + .dev = { + .platform_data = &coldfire_master_info, + } +}; + +/** + * m547x_8x_spi_init - Initialize SPI + */ +static int __init m547x_8x_spi_init(void) +{ + int retval; + + /* initialize the DSPI PAR */ + MCF_GPIO_PAR_DSPI = (MCF_GPIO_PAR_DSPI_PAR_CS5 | + MCF_GPIO_PAR_DSPI_PAR_CS3_DSPICS | + MCF_GPIO_PAR_DSPI_PAR_CS2_DSPICS | + MCF_GPIO_PAR_DSPI_PAR_CS0_DSPICS | + MCF_GPIO_PAR_DSPI_PAR_SCK_SCK | + MCF_GPIO_PAR_DSPI_PAR_SIN_SIN | + MCF_GPIO_PAR_DSPI_PAR_SOUT_SOUT); + + /* register device */ + retval = platform_device_register(&coldfire_spi); + if (retval < 0) { + goto out; + } + + /* register board info */ + if (ARRAY_SIZE(spi_board_info)) + retval = spi_register_board_info(spi_board_info, ARRAY_SIZE(spi_board_info)); + +out: + return retval; +} +#endif + +#ifdef CONFIG_I2C_BOARDINFO +static struct i2c_board_info mcf_i2c_devices[] = { + { + I2C_BOARD_INFO("rv5c387a", 0x32), + }, +}; +#endif + +/** + * m547x_8x_init_devices - Initialize M547X_8X devices + * + * Returns 0 on success. + */ +static int __init m547x_8x_init_devices(void) +{ +#ifdef CONFIG_SPI + m547x_8x_spi_init(); +#endif +#ifdef CONFIG_I2C_BOARDINFO + i2c_register_board_info(0, mcf_i2c_devices, + ARRAY_SIZE(mcf_i2c_devices)); +#endif + + return 0; +} +arch_initcall(m547x_8x_init_devices); |