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| author | Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> | 2012-01-05 14:40:49 +0100 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2012-01-06 09:42:30 +0100 |
| commit | d816bb4cc05f1af3cdd11d0b166f7c5bed8f080f (patch) | |
| tree | 02f7913978ccde412bb808487f55b4b3f4b22669 /arch/arm/mach-at91/at91sam9260_devices.c | |
| parent | be11d8ef355c9d5d3a0add64ef9a5e3203ad6810 (diff) | |
| download | barebox-d816bb4cc05f1af3cdd11d0b166f7c5bed8f080f.tar.gz barebox-d816bb4cc05f1af3cdd11d0b166f7c5bed8f080f.tar.xz | |
at91: add spi device ressources
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'arch/arm/mach-at91/at91sam9260_devices.c')
| -rw-r--r-- | arch/arm/mach-at91/at91sam9260_devices.c | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/arch/arm/mach-at91/at91sam9260_devices.c b/arch/arm/mach-at91/at91sam9260_devices.c index 8e8ea3b2d0..695a3ee5c0 100644 --- a/arch/arm/mach-at91/at91sam9260_devices.c +++ b/arch/arm/mach-at91/at91sam9260_devices.c @@ -150,6 +150,50 @@ void at91_add_device_nand(struct atmel_nand_data *data) void at91_add_device_nand(struct atmel_nand_data *data) {} #endif +/* -------------------------------------------------------------------- + * SPI + * -------------------------------------------------------------------- */ + +#if defined(CONFIG_DRIVER_SPI_ATMEL) +void __init at91_add_device_spi(int spi_id, struct at91_spi_platform_data *pdata) +{ + int i; + int cs_pin; + resource_size_t start = ~0; + + BUG_ON(spi_id > 1); + + for (i = 0; i < pdata->num_chipselect; i++) { + cs_pin = pdata->chipselect[i]; + + /* enable chip-select pin */ + if (cs_pin > 0) + at91_set_gpio_output(cs_pin, 1); + } + + /* Configure SPI bus(es) */ + switch (spi_id) { + case 0: + start = AT91SAM9260_BASE_SPI0; + at91_set_A_periph(AT91_PIN_PA0, 0); /* SPI0_MISO */ + at91_set_A_periph(AT91_PIN_PA1, 0); /* SPI0_MOSI */ + at91_set_A_periph(AT91_PIN_PA2, 0); /* SPI1_SPCK */ + break; + case 1: + start = AT91SAM9260_BASE_SPI1; + at91_set_A_periph(AT91_PIN_PB0, 0); /* SPI1_MISO */ + at91_set_A_periph(AT91_PIN_PB1, 0); /* SPI1_MOSI */ + at91_set_A_periph(AT91_PIN_PB2, 0); /* SPI1_SPCK */ + break; + } + + add_generic_device("atmel_spi", spi_id, NULL, start, SZ_16K, + IORESOURCE_MEM, pdata); +} +#else +void __init at91_add_device_spi(int spi_id, struct at91_spi_platform_data *pdata) {} +#endif + static inline void configure_dbgu_pins(void) { at91_set_A_periph(AT91_PIN_PB14, 0); /* DRXD */ |