From 452369cd0c636123321d021298b4bc35a34f4941 Mon Sep 17 00:00:00 2001 From: Andre Przywara Date: Tue, 6 Sep 2022 12:12:50 +0100 Subject: [PATCH] pinctrl: sunxi: add new D1 pinctrl support For the first time since at least the Allwinner A10 SoCs, the D1 (and related cores) use a new pincontroller MMIO register layout, so we cannot use our hardcoded, fixed offsets anymore. Ideally this would all be handled by devicetree and DM drivers, but for the DT-less SPL we still need the legacy interfaces. Add a new Kconfig symbol to differenciate between the two generations of pincontrollers, and just use that to just switch some basic symbols. The rest is already abstracted enough, so works out of the box. Signed-off-by: Andre Przywara Reviewed-by: Sam Edwards Tested-by: Sam Edwards Tested-by: Samuel Holland --- drivers/gpio/Kconfig | 7 +++++++ drivers/gpio/sunxi_gpio.c | 17 +++++++++++++++-- include/sunxi_gpio.h | 10 ++++++++-- 3 files changed, 30 insertions(+), 4 deletions(-) diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig index 74baa98d3c..ba42b0768e 100644 --- a/drivers/gpio/Kconfig +++ b/drivers/gpio/Kconfig @@ -372,6 +372,13 @@ config SUNXI_GPIO help Support the GPIO device in Allwinner SoCs. +config SUNXI_NEW_PINCTRL + bool + depends on SUNXI_GPIO + ---help--- + The Allwinner D1 and other new SoCs use a different register map + for the GPIO block, which we need to know about in the SPL. + config XILINX_GPIO bool "Xilinx GPIO driver" depends on DM_GPIO diff --git a/drivers/gpio/sunxi_gpio.c b/drivers/gpio/sunxi_gpio.c index e335496581..e4463a223f 100644 --- a/drivers/gpio/sunxi_gpio.c +++ b/drivers/gpio/sunxi_gpio.c @@ -40,10 +40,23 @@ #define GPIO_DAT_REG_OFFSET 0x10 #define GPIO_DRV_REG_OFFSET 0x14 -#define GPIO_DRV_INDEX(pin) (((pin) & 0x1f) >> 4) -#define GPIO_DRV_OFFSET(pin) ((((pin) & 0x1f) & 0xf) << 1) + +/* Newer SoCs use a slightly different register layout */ +#ifdef CONFIG_SUNXI_NEW_PINCTRL +/* pin drive strength: 4 bits per pin */ +#define GPIO_DRV_INDEX(pin) ((pin) / 8) +#define GPIO_DRV_OFFSET(pin) (((pin) % 8) * 4) + +#define GPIO_PULL_REG_OFFSET 0x24 + +#else /* older generation pin controllers */ +/* pin drive strength: 2 bits per pin */ +#define GPIO_DRV_INDEX(pin) ((pin) / 16) +#define GPIO_DRV_OFFSET(pin) (((pin) % 16) * 2) #define GPIO_PULL_REG_OFFSET 0x1c +#endif + #define GPIO_PULL_INDEX(pin) (((pin) & 0x1f) >> 4) #define GPIO_PULL_OFFSET(pin) ((((pin) & 0x1f) & 0xf) << 1) diff --git a/include/sunxi_gpio.h b/include/sunxi_gpio.h index c1fdf7ea1d..30d8879dbd 100644 --- a/include/sunxi_gpio.h +++ b/include/sunxi_gpio.h @@ -62,7 +62,6 @@ #define SUN50I_H6_GPIO_POW_MOD_VAL 0x348 #define SUNXI_GPIOS_PER_BANK 32 -#define SUNXI_PINCTRL_BANK_SIZE 0x24 #define SUNXI_GPIO_NEXT(__gpio) \ ((__gpio##_START) + SUNXI_GPIOS_PER_BANK) @@ -102,7 +101,6 @@ enum sunxi_gpio_number { /* GPIO pin function config */ #define SUNXI_GPIO_INPUT 0 #define SUNXI_GPIO_OUTPUT 1 -#define SUNXI_GPIO_DISABLE 7 #define SUN8I_H3_GPA_UART0 2 #define SUN8I_H3_GPA_UART2 2 @@ -171,6 +169,14 @@ enum sunxi_gpio_number { #define SUN9I_GPN_R_RSB 3 +#ifdef CONFIG_SUNXI_NEW_PINCTRL + #define SUNXI_PINCTRL_BANK_SIZE 0x30 + #define SUNXI_GPIO_DISABLE 0xf +#else + #define SUNXI_PINCTRL_BANK_SIZE 0x24 + #define SUNXI_GPIO_DISABLE 0x7 +#endif + /* GPIO pin pull-up/down config */ #define SUNXI_GPIO_PULL_DISABLE 0 #define SUNXI_GPIO_PULL_UP 1 -- 2.39.5