From f94a1bed07e2af1c46ddcf2046cddd979ebfd994 Mon Sep 17 00:00:00 2001 From: Simon Glass <sjg@chromium.org> Date: Thu, 5 Feb 2015 21:41:35 -0700 Subject: [PATCH] dm: Expand and complete Kconfig in drivers/ Expand the help messages for each driver. Add missing Kconfig for I2C, SPI flash and thermal. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Masahiro Yamada <yamada.m@jp.panasonic.com> --- doc/driver-model/spi-howto.txt | 4 ++-- drivers/Kconfig | 2 ++ drivers/core/Kconfig | 6 ++++-- drivers/gpio/Kconfig | 7 +++++-- drivers/i2c/Kconfig | 12 ++++++++++-- drivers/misc/Kconfig | 9 +++++++++ drivers/mtd/Kconfig | 2 ++ drivers/mtd/spi/Kconfig | 14 ++++++++++++++ drivers/serial/Kconfig | 6 ++++-- drivers/spi/Kconfig | 10 ++++++++-- drivers/thermal/Kconfig | 7 +++++++ 11 files changed, 67 insertions(+), 12 deletions(-) create mode 100644 drivers/mtd/spi/Kconfig create mode 100644 drivers/thermal/Kconfig diff --git a/doc/driver-model/spi-howto.txt b/doc/driver-model/spi-howto.txt index 5bc29ad65ce..ee4abf4a8b4 100644 --- a/doc/driver-model/spi-howto.txt +++ b/doc/driver-model/spi-howto.txt @@ -40,8 +40,8 @@ with only minor changes: Add these to your board config: -#define CONFIG_DM_SPI -#define CONFIG_DM_SPI_FLASH +CONFIG_DM_SPI +CONFIG_DM_SPI_FLASH 2. Add the skeleton diff --git a/drivers/Kconfig b/drivers/Kconfig index 021293e798d..dcce532e2df 100644 --- a/drivers/Kconfig +++ b/drivers/Kconfig @@ -50,4 +50,6 @@ source "drivers/dma/Kconfig" source "drivers/crypto/Kconfig" +source "drivers/thermal/Kconfig" + endmenu diff --git a/drivers/core/Kconfig b/drivers/core/Kconfig index d2799dc861f..dc32385e854 100644 --- a/drivers/core/Kconfig +++ b/drivers/core/Kconfig @@ -2,5 +2,7 @@ config DM bool "Enable Driver Model" depends on !SPL_BUILD help - This config option enables Driver Model. - To use legacy drivers, say N. + This config option enables Driver Model. This brings in the core + support, including scanning of platform data on start-up. If + CONFIG_OF_CONTROL is enabled, the device tree will be scanned also + when available. diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig index d21302f8da9..b609e73bbaf 100644 --- a/drivers/gpio/Kconfig +++ b/drivers/gpio/Kconfig @@ -2,5 +2,8 @@ config DM_GPIO bool "Enable Driver Model for GPIO drivers" depends on DM help - If you want to use driver model for GPIO drivers, say Y. - To use legacy GPIO drivers, say N. + Enable driver model for GPIO access. The standard GPIO + interface (gpio_get_value(), etc.) is then implemented by + the GPIO uclass. Drivers provide methods to query the + particular GPIOs that they provide. The uclass interface + is defined in include/asm-generic/gpio.h. diff --git a/drivers/i2c/Kconfig b/drivers/i2c/Kconfig index 202ea5d6794..2cc776c73f4 100644 --- a/drivers/i2c/Kconfig +++ b/drivers/i2c/Kconfig @@ -2,8 +2,16 @@ config DM_I2C bool "Enable Driver Model for I2C drivers" depends on DM help - If you want to use driver model for I2C drivers, say Y. - To use legacy I2C drivers, say N. + Enable driver model for I2C. This SPI flash interface + (spi_flash_probe(), spi_flash_write(), etc.) is then + implemented by the SPI flash uclass. There is one standard + SPI flash driver which knows how to probe most chips + supported by U-Boot. The uclass interface is defined in + include/spi_flash.h, but is currently fully compatible + with the old interface to avoid confusion and duplication + during the transition parent. SPI and SPI flash must be + enabled together (it is not possible to use driver model + for one and not the other). config SYS_I2C_UNIPHIER bool "UniPhier I2C driver" diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig index e69de29bb2d..813d1c24b97 100644 --- a/drivers/misc/Kconfig +++ b/drivers/misc/Kconfig @@ -0,0 +1,9 @@ +config DM_CROS_EC + bool "Enable Driver Model for Chrome OS EC" + depends on DM + help + Enable driver model for the Chrome OS EC interface. This + allows the cros_ec SPI driver to operate with CONFIG_DM_SPI + but otherwise makes few changes. Since cros_ec also supports + I2C and LPC (which don't support driver model yet), a full + conversion is not yet possible. diff --git a/drivers/mtd/Kconfig b/drivers/mtd/Kconfig index 415ab4eba9d..59278d1eef6 100644 --- a/drivers/mtd/Kconfig +++ b/drivers/mtd/Kconfig @@ -1 +1,3 @@ source "drivers/mtd/nand/Kconfig" + +source "drivers/mtd/spi/Kconfig" diff --git a/drivers/mtd/spi/Kconfig b/drivers/mtd/spi/Kconfig new file mode 100644 index 00000000000..2dc46b4b340 --- /dev/null +++ b/drivers/mtd/spi/Kconfig @@ -0,0 +1,14 @@ +config DM_SPI_FLASH + bool "Enable Driver Model for SPI flash" + depends on DM && SPI + help + Enable driver model for SPI flash. This SPI flash interface + (spi_flash_probe(), spi_flash_write(), etc.) is then + implemented by the SPI flash uclass. There is one standard + SPI flash driver which knows how to probe most chips + supported by U-Boot. The uclass interface is defined in + include/spi_flash.h, but is currently fully compatible + with the old interface to avoid confusion and duplication + during the transition parent. SPI and SPI flash must be + enabled together (it is not possible to use driver model + for one and not the other). diff --git a/drivers/serial/Kconfig b/drivers/serial/Kconfig index a0b6e02b546..c94353ba6ac 100644 --- a/drivers/serial/Kconfig +++ b/drivers/serial/Kconfig @@ -2,8 +2,10 @@ config DM_SERIAL bool "Enable Driver Model for serial drivers" depends on DM help - If you want to use driver model for serial drivers, say Y. - To use legacy serial drivers, say N. + Enable driver model for serial. This replaces + drivers/serial/serial.c with the serial uclass, which + implements serial_putc() etc. The uclass interface is + defined in include/serial.h. config UNIPHIER_SERIAL bool "UniPhier on-chip UART support" diff --git a/drivers/spi/Kconfig b/drivers/spi/Kconfig index e1678e63e6a..7ae2727cf7e 100644 --- a/drivers/spi/Kconfig +++ b/drivers/spi/Kconfig @@ -2,5 +2,11 @@ config DM_SPI bool "Enable Driver Model for SPI drivers" depends on DM help - If you want to use driver model for SPI drivers, say Y. - To use legacy SPI drivers, say N. + Enable driver model for SPI. The SPI slave interface + (spi_setup_slave(), spi_xfer(), etc.) is then implemented by + the SPI uclass. Drivers provide methods to access the SPI + buses that they control. The uclass interface is defined in + include/spi.h. The existing spi_slave structure is attached + as 'parent data' to every slave on each bus. Slaves + typically use driver-private data instead of extending the + spi_slave structure. diff --git a/drivers/thermal/Kconfig b/drivers/thermal/Kconfig new file mode 100644 index 00000000000..3c6b36d1cfd --- /dev/null +++ b/drivers/thermal/Kconfig @@ -0,0 +1,7 @@ +config DM_THERMAL + bool "Driver support for thermal devices" + help + Enable support for temporary-sensing devices. Some SoCs have on-chip + temperature sensors to permit warnings, speed throttling or even + automatic power-off when the temperature gets too high or low. Other + devices may be discrete but connected on a suitable bus. -- GitLab