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sunxi: Complete i2c support for each supported platform

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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>
This commit is contained in:
Paul Kocialkowski 2015-04-10 23:09:52 +02:00 committed by Hans de Goede
parent dd82242b4d
commit 6c739c5d8a
6 changed files with 153 additions and 3 deletions
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7
arch/arm/include/asm/arch-sunxi/cpu_sun4i.h
View file

@ -94,6 +94,13 @@
#define SUNXI_TWI0_BASE 0x01c2ac00
#define SUNXI_TWI1_BASE 0x01c2b000
#define SUNXI_TWI2_BASE 0x01c2b400
#ifdef CONFIG_MACH_SUN6I
#define SUNXI_TWI3_BASE 0x01c0b800
#endif
#ifdef CONFIG_MACH_SUN7I
#define SUNXI_TWI3_BASE 0x01c2b800
#define SUNXI_TWI4_BASE 0x01c2c000
#endif
#define SUNXI_CAN_BASE 0x01c2bc00

15
arch/arm/include/asm/arch-sunxi/gpio.h
View file

@ -148,7 +148,11 @@ enum sunxi_gpio_number {
#define SUN6I_GPA_SDC2 5
#define SUN6I_GPA_SDC3 4
#define SUNXI_GPB_TWI0 2
#define SUN4I_GPB_TWI0 2
#define SUN4I_GPB_TWI1 2
#define SUN5I_GPB_TWI1 2
#define SUN4I_GPB_TWI2 2
#define SUN5I_GPB_TWI2 2
#define SUN4I_GPB_UART0 2
#define SUN5I_GPB_UART0 2
@ -160,6 +164,7 @@ enum sunxi_gpio_number {
#define SUNXI_GPD_LVDS0 3
#define SUN5I_GPE_SDC2 3
#define SUN8I_GPE_TWI2 3
#define SUNXI_GPF_SDC0 2
#define SUNXI_GPF_UART0 4
@ -169,12 +174,20 @@ enum sunxi_gpio_number {
#define SUN5I_GPG_SDC1 2
#define SUN6I_GPG_SDC1 2
#define SUN8I_GPG_SDC1 2
#define SUN6I_GPG_TWI3 2
#define SUN5I_GPG_UART1 4
#define SUN4I_GPH_SDC1 5
#define SUN6I_GPH_TWI0 2
#define SUN8I_GPH_TWI0 2
#define SUN6I_GPH_TWI1 2
#define SUN8I_GPH_TWI1 2
#define SUN6I_GPH_TWI2 2
#define SUN6I_GPH_UART0 2
#define SUNXI_GPI_SDC3 2
#define SUN7I_GPI_TWI3 3
#define SUN7I_GPI_TWI4 3
#define SUN6I_GPL0_R_P2WI_SCK 3
#define SUN6I_GPL1_R_P2WI_SDA 3

15
arch/arm/include/asm/arch-sunxi/i2c.h
View file

@ -8,7 +8,22 @@
#include <asm/arch/cpu.h>
#ifdef CONFIG_I2C0_ENABLE
#define CONFIG_I2C_MVTWSI_BASE0 SUNXI_TWI0_BASE
#endif
#ifdef CONFIG_I2C1_ENABLE
#define CONFIG_I2C_MVTWSI_BASE1 SUNXI_TWI1_BASE
#endif
#ifdef CONFIG_I2C2_ENABLE
#define CONFIG_I2C_MVTWSI_BASE2 SUNXI_TWI2_BASE
#endif
#ifdef CONFIG_I2C3_ENABLE
#define CONFIG_I2C_MVTWSI_BASE3 SUNXI_TWI3_BASE
#endif
#ifdef CONFIG_I2C4_ENABLE
#define CONFIG_I2C_MVTWSI_BASE4 SUNXI_TWI4_BASE
#endif
/* This is abp0-clk on sun4i/5i/7i / abp1-clk on sun6i/sun8i which is 24MHz */
#define CONFIG_SYS_TCLK 24000000

38
board/sunxi/Kconfig
View file

@ -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

77
board/sunxi/board.c
View file

@ -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);

4
include/configs/sunxi-common.h
View file

@ -196,7 +196,11 @@
#endif
#define CONFIG_SYS_I2C
#if defined CONFIG_I2C0_ENABLE || defined CONFIG_I2C1_ENABLE || \
defined CONFIG_I2C2_ENABLE || defined CONFIG_I2C3_ENABLE || \
defined CONFIG_I2C4_ENABLE
#define CONFIG_SYS_I2C_MVTWSI
#endif
#define CONFIG_SYS_I2C_SPEED 400000
#define CONFIG_SYS_I2C_SLAVE 0x7f