diff options
Diffstat (limited to 'board/sunxi')
| -rw-r--r-- | board/sunxi/Kconfig | 24 | ||||
| -rw-r--r-- | board/sunxi/board.c | 10 |
2 files changed, 34 insertions, 0 deletions
diff --git a/board/sunxi/Kconfig b/board/sunxi/Kconfig index a170c561aa..bbb4d1b1e5 100644 --- a/board/sunxi/Kconfig +++ b/board/sunxi/Kconfig @@ -344,6 +344,30 @@ config VIDEO_LCD_BL_PWM_ACTIVE_LOW ---help--- Set this if the backlight pwm output is active low. +config VIDEO_LCD_PANEL_I2C + bool "LCD panel needs to be configured via i2c" + depends on VIDEO + default m + ---help--- + Say y here if the LCD panel needs to be configured via i2c. This + will add a bitbang i2c controller using gpios to talk to the LCD. + +config VIDEO_LCD_PANEL_I2C_SDA + string "LCD panel i2c interface SDA pin" + depends on VIDEO_LCD_PANEL_I2C + default "PG12" + ---help--- + Set the SDA pin for the LCD i2c interface. This takes a string in the + format understood by sunxi_name_to_gpio, e.g. PH1 for pin 1 of port H. + +config VIDEO_LCD_PANEL_I2C_SCL + string "LCD panel i2c interface SCL pin" + depends on VIDEO_LCD_PANEL_I2C + default "PG10" + ---help--- + Set the SCL pin for the LCD i2c interface. This takes a string in the + format understood by sunxi_name_to_gpio, e.g. PH1 for pin 1 of port H. + # Note only one of these may be selected at a time! But hidden choices are # not supported by Kconfig diff --git a/board/sunxi/board.c b/board/sunxi/board.c index b70e00ce6b..e1891d198e 100644 --- a/board/sunxi/board.c +++ b/board/sunxi/board.c @@ -33,6 +33,12 @@ #include <linux/usb/musb.h> #include <net.h> +#if defined CONFIG_VIDEO_LCD_PANEL_I2C && !(defined CONFIG_SPL_BUILD) +/* So that we can use pin names in Kconfig and sunxi_name_to_gpio() */ +int soft_i2c_gpio_sda; +int soft_i2c_gpio_scl; +#endif + DECLARE_GLOBAL_DATA_PTR; /* add board specific code here */ @@ -152,6 +158,10 @@ void i2c_init_board(void) sunxi_gpio_set_cfgpin(SUNXI_GPB(0), SUNXI_GPB0_TWI0); sunxi_gpio_set_cfgpin(SUNXI_GPB(1), SUNXI_GPB0_TWI0); clock_twi_onoff(0, 1); +#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 |