Migrate the ST Microelectronics STUSB160X Type-C controller code in a generic I2C driver in st/common, based on Linux one in : drivers/usb/typec/stusb160x.c
This patch simplifies the stm32mp1 board code and allows to reuse this STUSB160X driver in other boards.
Signed-off-by: Patrick Delaunay patrick.delaunay@st.com ---
board/st/common/Kconfig | 7 ++++ board/st/common/Makefile | 2 + board/st/common/stusb160x.c | 46 +++++++++++++++++++++++ board/st/common/stusb160x.h | 10 +++++ board/st/stm32mp1/stm32mp1.c | 58 +++-------------------------- configs/stm32mp15_basic_defconfig | 1 + configs/stm32mp15_trusted_defconfig | 1 + 7 files changed, 73 insertions(+), 52 deletions(-) create mode 100644 board/st/common/stusb160x.c create mode 100644 board/st/common/stusb160x.h
diff --git a/board/st/common/Kconfig b/board/st/common/Kconfig index 015ba40939..5280d0f9ed 100644 --- a/board/st/common/Kconfig +++ b/board/st/common/Kconfig @@ -69,3 +69,10 @@ config DFU_ALT_RAM0 depends on ARCH_STM32MP && SET_DFU_ALT_INFO help This defines the partitions of ram used to build dfu dynamically. + +config TYPEC_STUSB160X + tristate "STMicroelectronics STUSB160X Type-C controller driver" + depends on DM_I2C + help + Say Y if your system has STMicroelectronics STUSB160X Type-C port + controller. diff --git a/board/st/common/Makefile b/board/st/common/Makefile index aa030bacd8..1a5280e139 100644 --- a/board/st/common/Makefile +++ b/board/st/common/Makefile @@ -9,3 +9,5 @@ ifeq ($(CONFIG_ARCH_STM32MP),y) obj-$(CONFIG_SYS_MTDPARTS_RUNTIME) += stm32mp_mtdparts.o obj-$(CONFIG_SET_DFU_ALT_INFO) += stm32mp_dfu.o endif + +obj-$(CONFIG_TYPEC_STUSB160X) += stusb160x.o diff --git a/board/st/common/stusb160x.c b/board/st/common/stusb160x.c new file mode 100644 index 0000000000..f1197f9faa --- /dev/null +++ b/board/st/common/stusb160x.c @@ -0,0 +1,46 @@ +// SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause +/* + * STMicroelectronics STUSB Type-C controller driver + * based on Linux drivers/usb/typec/stusb160x.c + * + * Copyright (C) 2020, STMicroelectronics - All Rights Reserved + */ + +#include <common.h> +#include <dm.h> +#include <i2c.h> + +/* REGISTER */ +#define STUSB160X_CC_CONNECTION_STATUS 0x0E + +/* STUSB160X_CC_CONNECTION_STATUS bitfields */ +#define STUSB160X_CC_ATTACH BIT(0) + +int stusb160x_cable_connected(void) +{ + struct udevice *dev; + int ret; + + ret = uclass_get_device_by_driver(UCLASS_I2C_GENERIC, + DM_GET_DRIVER(stusb160x), + &dev); + if (ret < 0) + return ret; + + ret = dm_i2c_reg_read(dev, STUSB160X_CC_CONNECTION_STATUS); + if (ret < 0) + return 0; + + return ret & STUSB160X_CC_ATTACH; +} + +static const struct udevice_id stusb160x_ids[] = { + { .compatible = "st,stusb1600" }, + {} +}; + +U_BOOT_DRIVER(stusb160x) = { + .name = "stusb160x", + .id = UCLASS_I2C_GENERIC, + .of_match = stusb160x_ids, +}; diff --git a/board/st/common/stusb160x.h b/board/st/common/stusb160x.h new file mode 100644 index 0000000000..fe39840b41 --- /dev/null +++ b/board/st/common/stusb160x.h @@ -0,0 +1,10 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2020, STMicroelectronics + */ + +#ifdef CONFIG_TYPEC_STUSB160X +int stusb160x_cable_connected(void); +#else +int stusb160x_cable_connected(void) { return -ENODEV; } +#endif diff --git a/board/st/stm32mp1/stm32mp1.c b/board/st/stm32mp1/stm32mp1.c index 4553329b25..a257375807 100644 --- a/board/st/stm32mp1/stm32mp1.c +++ b/board/st/stm32mp1/stm32mp1.c @@ -41,6 +41,8 @@ #include <power/regulator.h> #include <usb/dwc2_udc.h>
+#include "../../st/common/stusb160x.h" + /* SYSCFG registers */ #define SYSCFG_BOOTR 0x00 #define SYSCFG_PMCSETR 0x04 @@ -175,64 +177,16 @@ static void board_key_check(void) }
#if defined(CONFIG_USB_GADGET) && defined(CONFIG_USB_GADGET_DWC2_OTG) - -/* STMicroelectronics STUSB1600 Type-C controller */ -#define STUSB1600_CC_CONNECTION_STATUS 0x0E - -/* STUSB1600_CC_CONNECTION_STATUS bitfields */ -#define STUSB1600_CC_ATTACH BIT(0) - -static int stusb1600_init(struct udevice **dev_stusb1600) -{ - ofnode node; - struct udevice *dev, *bus; - int ret; - u32 chip_addr; - - *dev_stusb1600 = NULL; - - /* if node stusb1600 is present, means DK1 or DK2 board */ - node = ofnode_by_compatible(ofnode_null(), "st,stusb1600"); - if (!ofnode_valid(node)) - return -ENODEV; - - ret = ofnode_read_u32(node, "reg", &chip_addr); - if (ret) - return -EINVAL; - - ret = uclass_get_device_by_ofnode(UCLASS_I2C, ofnode_get_parent(node), - &bus); - if (ret) { - printf("bus for stusb1600 not found\n"); - return -ENODEV; - } - - ret = dm_i2c_probe(bus, chip_addr, 0, &dev); - if (!ret) - *dev_stusb1600 = dev; - - return ret; -} - -static int stusb1600_cable_connected(struct udevice *dev) -{ - u8 status; - - if (dm_i2c_read(dev, STUSB1600_CC_CONNECTION_STATUS, &status, 1)) - return 0; - - return status & STUSB1600_CC_ATTACH; -} - #include <usb/dwc2_udc.h> int g_dnl_board_usb_cable_connected(void) { - struct udevice *stusb1600; struct udevice *dwc2_udc_otg; int ret;
- if (!stusb1600_init(&stusb1600)) - return stusb1600_cable_connected(stusb1600); + /* if typec stusb160x is present, means DK1 or DK2 board */ + ret = stusb160x_cable_connected(); + if (ret >= 0) + return ret;
ret = uclass_get_device_by_driver(UCLASS_USB_GADGET_GENERIC, DM_GET_DRIVER(dwc2_udc_otg), diff --git a/configs/stm32mp15_basic_defconfig b/configs/stm32mp15_basic_defconfig index c7dd2926c9..7d41606a98 100644 --- a/configs/stm32mp15_basic_defconfig +++ b/configs/stm32mp15_basic_defconfig @@ -8,6 +8,7 @@ CONFIG_SPL_MMC_SUPPORT=y CONFIG_SPL=y CONFIG_TARGET_ST_STM32MP15x=y CONFIG_CMD_STM32PROG=y +CONFIG_TYPEC_STUSB160X=y CONFIG_ENV_OFFSET_REDUND=0x2C0000 CONFIG_SPL_SPI_FLASH_SUPPORT=y CONFIG_SPL_SPI_SUPPORT=y diff --git a/configs/stm32mp15_trusted_defconfig b/configs/stm32mp15_trusted_defconfig index ca4a10813b..decdc2c1de 100644 --- a/configs/stm32mp15_trusted_defconfig +++ b/configs/stm32mp15_trusted_defconfig @@ -6,6 +6,7 @@ CONFIG_ENV_OFFSET=0x280000 CONFIG_ENV_SECT_SIZE=0x40000 CONFIG_TARGET_ST_STM32MP15x=y CONFIG_CMD_STM32PROG=y +CONFIG_TYPEC_STUSB160X=y CONFIG_ENV_OFFSET_REDUND=0x2C0000 CONFIG_DISTRO_DEFAULTS=y CONFIG_FIT=y