diff options
| author | David Hendricks <dhendrix@chromium.org> | 2012-04-07 21:51:33 -0700 |
|---|---|---|
| committer | Simon Glass <sjg@chromium.org> | 2012-04-13 10:24:11 -0700 |
| commit | 826d3346337fcb3cdfd95859b631d739fb3e54e9 (patch) | |
| tree | a7fff32394d26df9b70849f7e6bc23de30bf05d7 /board/daisy/board.c | |
| parent | 335af85983c4bf8eac17de3d4b06c7d0b5c8eca0 (diff) | |
| download | chrome-ec-826d3346337fcb3cdfd95859b631d739fb3e54e9.tar.gz | |
daisy: Plumb in SPI support
This adds support for setting up the SPI pins and driver, as well as the
required SPI work task.
BUG=chromium-os:28925
TEST=build on daisy and discovery; run on daisy
Change-Id: Ie73560356fc8e4fcec0773c4692ecd6a7ba7affa
Signed-off-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'board/daisy/board.c')
| -rw-r--r-- | board/daisy/board.c | 35 |
1 files changed, 34 insertions, 1 deletions
diff --git a/board/daisy/board.c b/board/daisy/board.c index a30913fc1a..e62fd3964e 100644 --- a/board/daisy/board.c +++ b/board/daisy/board.c @@ -9,6 +9,7 @@ #include "dma.h" #include "gpio.h" #include "registers.h" +#include "spi.h" #include "util.h" /* @@ -45,6 +46,8 @@ const struct gpio_info gpio_list[GPIO_COUNT] = { {"KB_COL06", GPIO_C, (1<<15), GPIO_INT_BOTH, matrix_interrupt}, {"KB_COL07", GPIO_D, (1<<2), GPIO_INT_BOTH, matrix_interrupt}, /* Other inputs */ + {"SPI1_NSS", GPIO_A, (1<<4), GPIO_INT_RISING, NULL}, + /* Outputs */ {"EN_PP1350", GPIO_A, (1<<2), GPIO_OUT_LOW, NULL}, {"EN_PP5000", GPIO_A, (1<<3), GPIO_OUT_LOW, NULL}, @@ -57,6 +60,9 @@ const struct gpio_info gpio_list[GPIO_COUNT] = { void configure_board(void) { + /* Required to configure external IRQ lines (SYSCFG_EXTICRn) */ + STM32L_RCC_APB2ENR |= 1 << 0; + dma_init(); /* Enable all GPIOs clocks @@ -64,8 +70,35 @@ void configure_board(void) */ STM32L_RCC_AHBENR |= 0x3f; + /* Enable SPI */ + STM32L_RCC_APB2ENR |= (1<<12); + /*| (1 << 0); - removed since this breaks USB download? */ + + /* SPI1 on pins PA4-7 (push-pull, no pullup/down, 10MHz) */ + STM32L_GPIO_PUPDR_OFF(GPIO_A) &= ~((2 << (7 * 2)) | + (2 << (6 * 2)) | + (2 << (5 * 2)) | + (2 << (4 * 2))); + STM32L_GPIO_OTYPER_OFF(GPIO_A) &= ~((1 << 7) | + (1 << 6) | + (1 << 5) | + (1 << 4)); + gpio_set_alternate_function(GPIO_A, (1<<7) | + (1<<6) | + (1<<5) | + (1<<4), GPIO_ALT_SPI); + STM32L_GPIO_OSPEEDR_OFF(GPIO_A) |= 0xff00; + /* Select Alternate function for USART1 on pins PA9/PA10 */ - gpio_set_alternate_function(GPIO_A, (1<<9) | (1<<10), GPIO_ALT_USART); + gpio_set_alternate_function(GPIO_A, (1<<9) | (1<<10), GPIO_ALT_USART); + + /* EC_INT is output, open-drain */ + STM32L_GPIO_OTYPER_OFF(GPIO_B) |= (1<<9); + STM32L_GPIO_PUPDR_OFF(GPIO_B) &= ~(0x3 << (2*9)); + STM32L_GPIO_MODER_OFF(GPIO_B) &= ~(0x3 << (2*9)); + STM32L_GPIO_MODER_OFF(GPIO_B) |= 0x1 << (2*9); + /* put GPIO in Hi-Z state */ + gpio_set_level(GPIO_EC_INT, 1); } void board_keyboard_scan_ready(void) |