Hi Patrick On 6/29/20 10:34 AM, Patrick Delaunay wrote: > 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 <[email protected]> > --- > > 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
Reviewed-by: Patrice Chotard <[email protected]> Thanks
