diff options
| author | Hans de Goede <hdegoede@redhat.com> | 2015-04-23 23:23:50 +0200 |
|---|---|---|
| committer | Hans de Goede <hdegoede@redhat.com> | 2015-05-04 16:51:52 +0200 |
| commit | 4f7e01c9615e6f0b21e00c2a0900b2db2b23b4fc (patch) | |
| tree | 38b81953cf6e632651943dd3087b0be2f3aa918d /board/sunxi/board.c | |
| parent | 1572819c5fb4c7f8596c973555211b37847fdf5d (diff) | |
sunxi: soft-i2c: Fix gpio handling to work with the driver-model
i2c_init_board() gets called before the driver-model (gpio) code is
initialized, so move the setup of the soft-i2c pins out of i2c_init_board()
and into board_init(), at which time the driver-model setup has been done.
Also add proper error checking and properly request the gpios as that is
mandatory with the driver-model.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
Diffstat (limited to 'board/sunxi/board.c')
| -rw-r--r-- | board/sunxi/board.c | 44 |
1 files changed, 38 insertions, 6 deletions
diff --git a/board/sunxi/board.c b/board/sunxi/board.c index dda50b55a5..9a486392b8 100644 --- a/board/sunxi/board.c +++ b/board/sunxi/board.c @@ -29,6 +29,7 @@ #include <asm/arch/gpio.h> #include <asm/arch/mmc.h> #include <asm/arch/usbc.h> +#include <asm/gpio.h> #include <asm/io.h> #include <linux/usb/musb.h> #include <net.h> @@ -37,6 +38,41 @@ /* So that we can use pin names in Kconfig and sunxi_name_to_gpio() */ int soft_i2c_gpio_sda; int soft_i2c_gpio_scl; + +static int soft_i2c_board_init(void) +{ + int ret; + + soft_i2c_gpio_sda = sunxi_name_to_gpio(CONFIG_VIDEO_LCD_PANEL_I2C_SDA); + if (soft_i2c_gpio_sda < 0) { + printf("Error invalid soft i2c sda pin: '%s', err %d\n", + CONFIG_VIDEO_LCD_PANEL_I2C_SDA, soft_i2c_gpio_sda); + return soft_i2c_gpio_sda; + } + ret = gpio_request(soft_i2c_gpio_sda, "soft-i2c-sda"); + if (ret) { + printf("Error requesting soft i2c sda pin: '%s', err %d\n", + CONFIG_VIDEO_LCD_PANEL_I2C_SDA, ret); + return ret; + } + + soft_i2c_gpio_scl = sunxi_name_to_gpio(CONFIG_VIDEO_LCD_PANEL_I2C_SCL); + if (soft_i2c_gpio_scl < 0) { + printf("Error invalid soft i2c scl pin: '%s', err %d\n", + CONFIG_VIDEO_LCD_PANEL_I2C_SCL, soft_i2c_gpio_scl); + return soft_i2c_gpio_scl; + } + ret = gpio_request(soft_i2c_gpio_scl, "soft-i2c-scl"); + if (ret) { + printf("Error requesting soft i2c scl pin: '%s', err %d\n", + CONFIG_VIDEO_LCD_PANEL_I2C_SCL, ret); + return ret; + } + + return 0; +} +#else +static int soft_i2c_board_init(void) { return 0; } #endif DECLARE_GLOBAL_DATA_PTR; @@ -57,7 +93,8 @@ int board_init(void) asm volatile("mcr p15, 0, %0, c14, c0, 0" : : "r"(24000000)); } - return 0; + /* Uses dm gpio code so do this here and not in i2c_init_board() */ + return soft_i2c_board_init(); } int dram_init(void) @@ -351,11 +388,6 @@ void i2c_init_board(void) clock_twi_onoff(4, 1); #endif #endif - -#if defined CONFIG_VIDEO_LCD_PANEL_I2C && !(defined CONFIG_SPL_BUILD) - soft_i2c_gpio_sda = sunxi_name_to_gpio(CONFIG_VIDEO_LCD_PANEL_I2C_SDA); - soft_i2c_gpio_scl = sunxi_name_to_gpio(CONFIG_VIDEO_LCD_PANEL_I2C_SCL); -#endif } #ifdef CONFIG_SPL_BUILD |