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authorPaul Kocialkowski <contact@paulk.fr>2015-04-10 23:09:52 +0200
committerHans de Goede <hdegoede@redhat.com>2015-04-15 16:33:17 +0200
commit6c739c5d8a3466f8ef2f8543636484957bcca6ee (patch)
tree0433603560e2badfc29601d6225c6577bc543b07 /board/sunxi
parentdd82242b4dd7d251ef9ba43563cf9a0017d6f98e (diff)
sunxi: Complete i2c support for each supported platform
Sunxi platforms come with at least 3 TWI (I2C) controllers and some platforms even have up to 5. This adds support for every controller on each supported platform, which is especially useful when using expansion ports on single-board- computers. Signed-off-by: Paul Kocialkowski <contact@paulk.fr> Acked-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Diffstat (limited to 'board/sunxi')
-rw-r--r--board/sunxi/Kconfig38
-rw-r--r--board/sunxi/board.c77
2 files changed, 113 insertions, 2 deletions
diff --git a/board/sunxi/Kconfig b/board/sunxi/Kconfig
index ccc2080d8c2..88e335836d7 100644
--- a/board/sunxi/Kconfig
+++ b/board/sunxi/Kconfig
@@ -269,6 +269,44 @@ config USB2_VBUS_PIN
---help---
See USB1_VBUS_PIN help text.
+config I2C0_ENABLE
+ bool "Enable I2C/TWI controller 0"
+ default y if MACH_SUN4I || MACH_SUN5I || MACH_SUN7I
+ default n if MACH_SUN6I || MACH_SUN8I
+ ---help---
+ This allows enabling I2C/TWI controller 0 by muxing its pins, enabling
+ its clock and setting up the bus. This is especially useful on devices
+ with slaves connected to the bus or with pins exposed through e.g. an
+ expansion port/header.
+
+config I2C1_ENABLE
+ bool "Enable I2C/TWI controller 1"
+ default n
+ ---help---
+ See I2C0_ENABLE help text.
+
+config I2C2_ENABLE
+ bool "Enable I2C/TWI controller 2"
+ default n
+ ---help---
+ See I2C0_ENABLE help text.
+
+if MACH_SUN6I || MACH_SUN7I
+config I2C3_ENABLE
+ bool "Enable I2C/TWI controller 3"
+ default n
+ ---help---
+ See I2C0_ENABLE help text.
+endif
+
+if MACH_SUN7I
+config I2C4_ENABLE
+ bool "Enable I2C/TWI controller 4"
+ default n
+ ---help---
+ See I2C0_ENABLE help text.
+endif
+
config VIDEO
boolean "Enable graphical uboot console on HDMI, LCD or VGA"
default y
diff --git a/board/sunxi/board.c b/board/sunxi/board.c
index 7633d65e6c9..dda50b55a50 100644
--- a/board/sunxi/board.c
+++ b/board/sunxi/board.c
@@ -276,9 +276,82 @@ int board_mmc_init(bd_t *bis)
void i2c_init_board(void)
{
- sunxi_gpio_set_cfgpin(SUNXI_GPB(0), SUNXI_GPB_TWI0);
- sunxi_gpio_set_cfgpin(SUNXI_GPB(1), SUNXI_GPB_TWI0);
+#ifdef CONFIG_I2C0_ENABLE
+#if defined(CONFIG_MACH_SUN4I) || defined(CONFIG_MACH_SUN5I) || defined(CONFIG_MACH_SUN7I)
+ sunxi_gpio_set_cfgpin(SUNXI_GPB(0), SUN4I_GPB_TWI0);
+ sunxi_gpio_set_cfgpin(SUNXI_GPB(1), SUN4I_GPB_TWI0);
clock_twi_onoff(0, 1);
+#elif defined(CONFIG_MACH_SUN6I)
+ sunxi_gpio_set_cfgpin(SUNXI_GPH(14), SUN6I_GPH_TWI0);
+ sunxi_gpio_set_cfgpin(SUNXI_GPH(15), SUN6I_GPH_TWI0);
+ clock_twi_onoff(0, 1);
+#elif defined(CONFIG_MACH_SUN8I)
+ sunxi_gpio_set_cfgpin(SUNXI_GPH(2), SUN8I_GPH_TWI0);
+ sunxi_gpio_set_cfgpin(SUNXI_GPH(3), SUN8I_GPH_TWI0);
+ clock_twi_onoff(0, 1);
+#endif
+#endif
+
+#ifdef CONFIG_I2C1_ENABLE
+#if defined(CONFIG_MACH_SUN4I) || defined(CONFIG_MACH_SUN7I)
+ sunxi_gpio_set_cfgpin(SUNXI_GPB(18), SUN4I_GPB_TWI1);
+ sunxi_gpio_set_cfgpin(SUNXI_GPB(19), SUN4I_GPB_TWI1);
+ clock_twi_onoff(1, 1);
+#elif defined(CONFIG_MACH_SUN5I)
+ sunxi_gpio_set_cfgpin(SUNXI_GPB(15), SUN5I_GPB_TWI1);
+ sunxi_gpio_set_cfgpin(SUNXI_GPB(16), SUN5I_GPB_TWI1);
+ clock_twi_onoff(1, 1);
+#elif defined(CONFIG_MACH_SUN6I)
+ sunxi_gpio_set_cfgpin(SUNXI_GPH(16), SUN6I_GPH_TWI1);
+ sunxi_gpio_set_cfgpin(SUNXI_GPH(17), SUN6I_GPH_TWI1);
+ clock_twi_onoff(1, 1);
+#elif defined(CONFIG_MACH_SUN8I)
+ sunxi_gpio_set_cfgpin(SUNXI_GPH(4), SUN8I_GPH_TWI1);
+ sunxi_gpio_set_cfgpin(SUNXI_GPH(5), SUN8I_GPH_TWI1);
+ clock_twi_onoff(1, 1);
+#endif
+#endif
+
+#ifdef CONFIG_I2C2_ENABLE
+#if defined(CONFIG_MACH_SUN4I) || defined(CONFIG_MACH_SUN7I)
+ sunxi_gpio_set_cfgpin(SUNXI_GPB(20), SUN4I_GPB_TWI2);
+ sunxi_gpio_set_cfgpin(SUNXI_GPB(21), SUN4I_GPB_TWI2);
+ clock_twi_onoff(2, 1);
+#elif defined(CONFIG_MACH_SUN5I)
+ sunxi_gpio_set_cfgpin(SUNXI_GPB(17), SUN5I_GPB_TWI2);
+ sunxi_gpio_set_cfgpin(SUNXI_GPB(18), SUN5I_GPB_TWI2);
+ clock_twi_onoff(2, 1);
+#elif defined(CONFIG_MACH_SUN6I)
+ sunxi_gpio_set_cfgpin(SUNXI_GPH(18), SUN6I_GPH_TWI2);
+ sunxi_gpio_set_cfgpin(SUNXI_GPH(19), SUN6I_GPH_TWI2);
+ clock_twi_onoff(2, 1);
+#elif defined(CONFIG_MACH_SUN8I)
+ sunxi_gpio_set_cfgpin(SUNXI_GPE(12), SUN8I_GPE_TWI2);
+ sunxi_gpio_set_cfgpin(SUNXI_GPE(13), SUN8I_GPE_TWI2);
+ clock_twi_onoff(2, 1);
+#endif
+#endif
+
+#ifdef CONFIG_I2C3_ENABLE
+#if defined(CONFIG_MACH_SUN6I)
+ sunxi_gpio_set_cfgpin(SUNXI_GPG(10), SUN6I_GPG_TWI3);
+ sunxi_gpio_set_cfgpin(SUNXI_GPG(11), SUN6I_GPG_TWI3);
+ clock_twi_onoff(3, 1);
+#elif defined(CONFIG_MACH_SUN7I)
+ sunxi_gpio_set_cfgpin(SUNXI_GPI(0), SUN7I_GPI_TWI3);
+ sunxi_gpio_set_cfgpin(SUNXI_GPI(1), SUN7I_GPI_TWI3);
+ clock_twi_onoff(3, 1);
+#endif
+#endif
+
+#ifdef CONFIG_I2C4_ENABLE
+#if defined(CONFIG_MACH_SUN7I)
+ sunxi_gpio_set_cfgpin(SUNXI_GPI(2), SUN7I_GPI_TWI4);
+ sunxi_gpio_set_cfgpin(SUNXI_GPI(3), SUN7I_GPI_TWI4);
+ 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);