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This is the bulk of pin control changes for the v4.15

kernel cycle:
 
 Core:
 
 - The pin control Kconfig entry PINCTRL is now turned into
   a menuconfig option. This obviously has the implication of
   making the subsystem menu visible in menuconfig. This is
   happening because of two things:
 
   - Intel have started to deploy and depend on pin controllers
     in a way that is affecting users directly. This happens
     on the highly integrated laptop chipsets named after
     geographical places: baytrail, broxton, cannonlake,
     cedarfork, cherryview, denverton, geminilake, lewisburg,
     merrifield, sunrisepoint... It started a while back and
     now it is ever more evident that this is crucial
     infrastructure for x86 laptops and not an embedded
     obscurity anymore. Users need to be aware.
 
   - Pin control expanders on I2C and SPI that are
     arch-agnostic. Currently Semtech SX150X and Microchip
     MCP28x08 but more are expected. Users will have to be
     able to configure these in directly for their set-up.
 
 - Just go and select GPIOLIB now that we made sure that
   GPIOLIB is a very vanilla subsystem. Do not depend on
   it, if we need it, select it.
 
 - Exposing the pin control subsystem in menuconfig uncovered
   a bunch of obscure bugs that are now hopefully fixed,
   all more or less pertaining to Blackfin.
 
 - Unified namespace for cross-calls between pin control and
   GPIO.
 
 - New support for clock skew/delay generic DT bindings
   and generic pin config options for this.
 
 - Minor documentation improvements.
 
 Various:
 
 - The Renesas SH-PFC pin controller has evolved a lot. It seems
   Renesas are churning out new SoCs by the minute.
 
 - A bunch of non-critical fixes for the Rockchip driver.
 
 - Improve the use of library functions instead of open coding.
 
 - Support the MCP28018 variant in the MCP28x08 driver.
 
 - Static constifying.
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Merge tag 'pinctrl-v4.15-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl

Pull pin control updates from Linus Walleij:
 "This is the bulk of pin control changes for the v4.15 kernel cycle:

  Core:

   - The pin control Kconfig entry PINCTRL is now turned into a
     menuconfig option. This obviously has the implication of making the
     subsystem menu visible in menuconfig. This is happening because of
     two things:

      (a) Intel have started to deploy and depend on pin controllers in
          a way that is affecting users directly. This happens on the
          highly integrated laptop chipsets named after geographical
          places: baytrail, broxton, cannonlake, cedarfork, cherryview,
          denverton, geminilake, lewisburg, merrifield, sunrisepoint...
          It started a while back and now it is ever more evident that
          this is crucial infrastructure for x86 laptops and not an
          embedded obscurity anymore. Users need to be aware.

      (b) Pin control expanders on I2C and SPI that are arch-agnostic.
          Currently Semtech SX150X and Microchip MCP28x08 but more are
          expected. Users will have to be able to configure these in
          directly for their set-up.

   - Just go and select GPIOLIB now that we made sure that GPIOLIB is a
     very vanilla subsystem. Do not depend on it, if we need it, select
     it.

   - Exposing the pin control subsystem in menuconfig uncovered a bunch
     of obscure bugs that are now hopefully fixed, all more or less
     pertaining to Blackfin.

   - Unified namespace for cross-calls between pin control and GPIO.

   - New support for clock skew/delay generic DT bindings and generic
     pin config options for this.

   - Minor documentation improvements.

  Various:

   - The Renesas SH-PFC pin controller has evolved a lot. It seems
     Renesas are churning out new SoCs by the minute.

   - A bunch of non-critical fixes for the Rockchip driver.

   - Improve the use of library functions instead of open coding.

   - Support the MCP28018 variant in the MCP28x08 driver.

   - Static constifying"

* tag 'pinctrl-v4.15-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (91 commits)
  pinctrl: gemini: Fix missing pad descriptions
  pinctrl: Add some depends on HAS_IOMEM
  pinctrl: samsung/s3c24xx: add CONFIG_OF dependency
  pinctrl: gemini: Fix GMAC groups
  pinctrl: qcom: spmi-gpio: Add pmi8994 gpio support
  pinctrl: ti-iodelay: remove redundant unused variable dev
  pinctrl: max77620: Use common error handling code in max77620_pinconf_set()
  pinctrl: gemini: Implement clock skew/delay config
  pinctrl: gemini: Use generic DT parser
  pinctrl: Add skew-delay pin config and bindings
  pinctrl: armada-37xx: Add edge both type gpio irq support
  pinctrl: uniphier: remove eMMC hardware reset pin-mux
  pinctrl: rockchip: Add iomux-route switching support for rk3288
  pinctrl: intel: Add Intel Cedar Fork PCH pin controller support
  pinctrl: intel: Make offset to interrupt status register configurable
  pinctrl: sunxi: Enforce the strict mode by default
  pinctrl: sunxi: Disable strict mode for old pinctrl drivers
  pinctrl: sunxi: Introduce the strict flag
  pinctrl: sh-pfc: Save/restore registers for PSCI system suspend
  pinctrl: sh-pfc: r8a7796: Use generic IOCTRL register description
  ...
This commit is contained in:
Linus Torvalds 2017-11-16 10:57:11 -08:00
commit b630a23a73
96 changed files with 6241 additions and 3161 deletions

View file

@ -9,8 +9,14 @@ The pin controller node must be a subnode of the system controller node.
Required properties:
- compatible: "cortina,gemini-pinctrl"
Subnodes of the pin controller contain pin control multiplexing set-up.
Please refer to pinctrl-bindings.txt for generic pin multiplexing nodes.
Subnodes of the pin controller contain pin control multiplexing set-up
and pin configuration of individual pins.
Please refer to pinctrl-bindings.txt for generic pin multiplexing nodes
and generic pin config nodes.
Supported configurations:
- skew-delay is supported on the Ethernet pins
Example:

View file

@ -97,8 +97,8 @@ group spi_quad
- pins 15-16
- functions spi, gpio
group uart_2
- pins 9-10
group uart2
- pins 9-10 and 18-19
- functions uart, gpio
Available groups and functions for the South bridge:

View file

@ -271,6 +271,10 @@ output-high - set the pin to output mode with high level
sleep-hardware-state - indicate this is sleep related state which will be programmed
into the registers for the sleep state.
slew-rate - set the slew rate
skew-delay - this affects the expected clock skew on input pins
and the delay before latching a value to an output
pin. Typically indicates how many double-inverters are
used to delay the signal.
For example:

View file

@ -0,0 +1,142 @@
Microchip MCP2308/MCP23S08/MCP23017/MCP23S17 driver for
8-/16-bit I/O expander with serial interface (I2C/SPI)
Required properties:
- compatible : Should be
- "mcp,mcp23s08" (DEPRECATED) for 8 GPIO SPI version
- "mcp,mcp23s17" (DEPRECATED) for 16 GPIO SPI version
- "mcp,mcp23008" (DEPRECATED) for 8 GPIO I2C version or
- "mcp,mcp23017" (DEPRECATED) for 16 GPIO I2C version of the chip
- "microchip,mcp23s08" for 8 GPIO SPI version
- "microchip,mcp23s17" for 16 GPIO SPI version
- "microchip,mcp23s18" for 16 GPIO SPI version
- "microchip,mcp23008" for 8 GPIO I2C version or
- "microchip,mcp23017" for 16 GPIO I2C version of the chip
- "microchip,mcp23018" for 16 GPIO I2C version
NOTE: Do not use the old mcp prefix any more. It is deprecated and will be
removed.
- #gpio-cells : Should be two.
- first cell is the pin number
- second cell is used to specify flags. Flags are currently unused.
- gpio-controller : Marks the device node as a GPIO controller.
- reg : For an address on its bus. I2C uses this a the I2C address of the chip.
SPI uses this to specify the chipselect line which the chip is
connected to. The driver and the SPI variant of the chip support
multiple chips on the same chipselect. Have a look at
microchip,spi-present-mask below.
Required device specific properties (only for SPI chips):
- mcp,spi-present-mask (DEPRECATED)
- microchip,spi-present-mask : This is a present flag, that makes only sense for SPI
chips - as the name suggests. Multiple SPI chips can share the same
SPI chipselect. Set a bit in bit0-7 in this mask to 1 if there is a
chip connected with the corresponding spi address set. For example if
you have a chip with address 3 connected, you have to set bit3 to 1,
which is 0x08. mcp23s08 chip variant only supports bits 0-3. It is not
possible to mix mcp23s08 and mcp23s17 on the same chipselect. Set at
least one bit to 1 for SPI chips.
NOTE: Do not use the old mcp prefix any more. It is deprecated and will be
removed.
- spi-max-frequency = The maximum frequency this chip is able to handle
Optional properties:
- #interrupt-cells : Should be two.
- first cell is the pin number
- second cell is used to specify flags.
- interrupt-controller: Marks the device node as a interrupt controller.
Optional device specific properties:
- microchip,irq-mirror: Sets the mirror flag in the IOCON register. Devices
with two interrupt outputs (these are the devices ending with 17 and
those that have 16 IOs) have two IO banks: IO 0-7 form bank 1 and
IO 8-15 are bank 2. These chips have two different interrupt outputs:
One for bank 1 and another for bank 2. If irq-mirror is set, both
interrupts are generated regardless of the bank that an input change
occurred on. If it is not set, the interrupt are only generated for the
bank they belong to.
On devices with only one interrupt output this property is useless.
- microchip,irq-active-high: Sets the INTPOL flag in the IOCON register. This
configures the IRQ output polarity as active high.
Example I2C (with interrupt):
gpiom1: gpio@20 {
compatible = "microchip,mcp23017";
gpio-controller;
#gpio-cells = <2>;
reg = <0x20>;
interrupt-parent = <&gpio1>;
interrupts = <17 IRQ_TYPE_LEVEL_LOW>;
interrupt-controller;
#interrupt-cells=<2>;
microchip,irq-mirror;
};
Example SPI:
gpiom1: gpio@0 {
compatible = "microchip,mcp23s17";
gpio-controller;
#gpio-cells = <2>;
spi-present-mask = <0x01>;
reg = <0>;
spi-max-frequency = <1000000>;
};
Pull-up configuration
=====================
If pins are used as output, they can also be configured with pull-ups. This is
done with pinctrl.
Please refer file <devicetree/bindings/pinctrl/pinctrl-bindings.txt>
for details of the common pinctrl bindings used by client devices,
including the meaning of the phrase "pin configuration node".
Optional Pinmux properties:
--------------------------
Following properties are required if default setting of pins are required
at boot.
- pinctrl-names: A pinctrl state named per <pinctrl-binding.txt>.
- pinctrl[0...n]: Properties to contain the phandle for pinctrl states per
<pinctrl-binding.txt>.
The pin configurations are defined as child of the pinctrl states node. Each
sub-node have following properties:
Required properties:
------------------
- pins: List of pins. Valid values of pins properties are:
gpio0 ... gpio7 for the devices with 8 GPIO pins and
gpio0 ... gpio15 for the devices with 16 GPIO pins.
Optional properties:
-------------------
The following optional property is defined in the pinmux DT binding document
<pinctrl-bindings.txt>. Absence of this property will leave the configuration
in its default state.
bias-pull-up
Example with pinctrl to pull-up output pins:
gpio21: gpio@21 {
compatible = "microchip,mcp23017";
gpio-controller;
#gpio-cells = <0x2>;
reg = <0x21>;
interrupt-parent = <&socgpio>;
interrupts = <0x17 0x8>;
interrupt-names = "mcp23017@21 irq";
interrupt-controller;
#interrupt-cells = <0x2>;
microchip,irq-mirror;
pinctrl-names = "default";
pinctrl-0 = <&i2cgpio0irq &gpio21pullups>;
gpio21pullups: pinmux {
pins = "gpio0", "gpio1", "gpio2", "gpio3",
"gpio4", "gpio5", "gpio6", "gpio7",
"gpio8", "gpio9", "gpio10", "gpio11",
"gpio12", "gpio13", "gpio14", "gpio15";
bias-pull-up;
};
};

View file

@ -15,6 +15,7 @@ PMIC's from Qualcomm.
"qcom,pm8921-gpio"
"qcom,pm8941-gpio"
"qcom,pm8994-gpio"
"qcom,pmi8994-gpio"
"qcom,pma8084-gpio"
"qcom,pmi8994-gpio"
@ -85,6 +86,7 @@ to specify in a pin configuration subnode:
gpio1-gpio44 for pm8921
gpio1-gpio36 for pm8941
gpio1-gpio22 for pm8994
gpio1-gpio10 for pmi8994
gpio1-gpio22 for pma8084
gpio1-gpio10 for pmi8994

View file

@ -12,8 +12,10 @@ Pin controller node
-------------------
Required properties:
- compatible
this shall be "renesas,r7s72100-ports".
- compatible: should be:
- "renesas,r7s72100-ports": for RZ/A1H
- "renesas,r7s72101-ports", "renesas,r7s72100-ports": for RZ/A1M
- "renesas,r7s72102-ports": for RZ/A1L
- reg
address base and length of the memory area where the pin controller

View file

@ -757,8 +757,8 @@ that your datasheet calls "GPIO mode", but actually is just an electrical
configuration for a certain device. See the section below named
"GPIO mode pitfalls" for more details on this scenario.
The public pinmux API contains two functions named pinctrl_request_gpio()
and pinctrl_free_gpio(). These two functions shall *ONLY* be called from
The public pinmux API contains two functions named pinctrl_gpio_request()
and pinctrl_gpio_free(). These two functions shall *ONLY* be called from
gpiolib-based drivers as part of their gpio_request() and
gpio_free() semantics. Likewise the pinctrl_gpio_direction_[input|output]
shall only be called from within respective gpio_direction_[input|output]
@ -790,7 +790,7 @@ gpiolib driver and the affected GPIO range, pin offset and desired direction
will be passed along to this function.
Alternatively to using these special functions, it is fully allowed to use
named functions for each GPIO pin, the pinctrl_request_gpio() will attempt to
named functions for each GPIO pin, the pinctrl_gpio_request() will attempt to
obtain the function "gpioN" where "N" is the global GPIO pin number if no
special GPIO-handler is registered.

View file

@ -273,8 +273,8 @@ easily, gating off unused clocks.
For GPIOs that use pins known to the pinctrl subsystem, that subsystem should
be informed of their use; a gpiolib driver's .request() operation may call
pinctrl_request_gpio(), and a gpiolib driver's .free() operation may call
pinctrl_free_gpio(). The pinctrl subsystem allows a pinctrl_request_gpio()
pinctrl_gpio_request(), and a gpiolib driver's .free() operation may call
pinctrl_gpio_free(). The pinctrl subsystem allows a pinctrl_gpio_request()
to succeed concurrently with a pin or pingroup being "owned" by a device for
pin multiplexing.
@ -448,8 +448,8 @@ together with an optional gpio feature. We have already covered the
case where e.g. a GPIO controller need to reserve a pin or set the
direction of a pin by calling any of:
pinctrl_request_gpio()
pinctrl_free_gpio()
pinctrl_gpio_request()
pinctrl_gpio_free()
pinctrl_gpio_direction_input()
pinctrl_gpio_direction_output()
@ -466,7 +466,7 @@ gpio (under gpiolib) is still maintained by gpio drivers. It may happen
that different pin ranges in a SoC is managed by different gpio drivers.
This makes it logical to let gpio drivers announce their pin ranges to
the pin ctrl subsystem before it will call 'pinctrl_request_gpio' in order
the pin ctrl subsystem before it will call 'pinctrl_gpio_request' in order
to request the corresponding pin to be prepared by the pinctrl subsystem
before any gpio usage.

View file

@ -257,9 +257,9 @@ GPIO 值的命令需要等待其信息排到队首才发送命令,再获得其
简单地关闭未使用时钟)。
对于 GPIO 使用 pinctrl 子系统已知的引脚,子系统应该被告知其使用情况;
一个 gpiolib 驱动的 .request()操作应调用 pinctrl_request_gpio(),
而 gpiolib 驱动的 .free()操作应调用 pinctrl_free_gpio()。pinctrl
子系统允许 pinctrl_request_gpio()在某个引脚或引脚组以复用形式“属于”
一个 gpiolib 驱动的 .request()操作应调用 pinctrl_gpio_request(),
而 gpiolib 驱动的 .free()操作应调用 pinctrl_gpio_free()。pinctrl
子系统允许 pinctrl_gpio_request()在某个引脚或引脚组以复用形式“属于”
一个设备时都成功返回。
任何须将 GPIO 信号导向适当引脚的引脚复用硬件的编程应该发生在 GPIO

View file

@ -10713,6 +10713,7 @@ PIN CONTROLLER - RENESAS
M: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
M: Geert Uytterhoeven <geert+renesas@glider.be>
L: linux-renesas-soc@vger.kernel.org
T: git git://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-drivers.git sh-pfc
S: Maintained
F: drivers/pinctrl/sh-pfc/

View file

@ -321,11 +321,14 @@ config BF53x
config GPIO_ADI
def_bool y
depends on !PINCTRL
depends on (BF51x || BF52x || BF53x || BF538 || BF539 || BF561)
config PINCTRL
config PINCTRL_BLACKFIN_ADI2
def_bool y
depends on BF54x || BF60x
depends on (BF54x || BF60x)
select PINCTRL
select PINCTRL_ADI2
config MEM_MT48LC64M4A2FB_7E
bool

View file

@ -18,6 +18,7 @@ config DEBUG_VERBOSE
config DEBUG_MMRS
tristate "Generate Blackfin MMR tree"
depends on !PINCTRL
select DEBUG_FS
help
Create a tree of Blackfin MMRs via the debugfs tree. If

View file

@ -183,6 +183,26 @@ static inline int irq_to_gpio(unsigned irq)
{
return irq - GPIO_IRQ_BASE;
}
#else /* CONFIG_PINCTRL */
/*
* CONFIG_PM is not working with pin control and should probably
* avoid being selected when pin control is active, but so far,
* these stubs are here to make allyesconfig and allmodconfig
* compile properly. These functions are normally backed by the
* CONFIG_ADI_GPIO custom GPIO implementation.
*/
static inline int bfin_pm_standby_setup(void)
{
return 0;
}
static inline void bfin_pm_standby_restore(void)
{
}
#endif /* CONFIG_PINCTRL */
#include <asm/irq.h>

View file

@ -15,6 +15,9 @@
/* FIXME: consumer API required for gpio_set_value() etc, get rid of this */
#include <linux/gpio.h>
#include <linux/irq.h>
#include <asm/gpio.h>
#include <asm/irq_handler.h>
#include <asm/portmux.h>
#if ANOMALY_05000311 || ANOMALY_05000323
enum {

View file

@ -10,7 +10,6 @@
#include <linux/fs.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/gpio.h>
#include <asm/blackfin.h>
#include <asm/gptimers.h>
@ -20,6 +19,7 @@
#include <asm/bfin_serial.h>
#include <asm/bfin5xx_spi.h>
#include <asm/bfin_twi.h>
#include <asm/gpio.h>
/* Common code defines PORT_MUX on us, so redirect the MMR back locally */
#ifdef BFIN_PORT_MUX

View file

@ -18,7 +18,6 @@
#include <linux/sched.h>
#include <linux/sched/debug.h>
#include <linux/syscore_ops.h>
#include <linux/gpio.h>
#include <asm/delay.h>
#ifdef CONFIG_IPIPE
#include <linux/ipipe.h>
@ -28,6 +27,7 @@
#include <asm/irq_handler.h>
#include <asm/dpmc.h>
#include <asm/traps.h>
#include <asm/gpio.h>
/*
* NOTES:

View file

@ -15,12 +15,12 @@
#include <linux/io.h>
#include <linux/irq.h>
#include <linux/delay.h>
#include <linux/gpio.h>
#include <asm/cplb.h>
#include <asm/dma.h>
#include <asm/dpmc.h>
#include <asm/pm.h>
#include <asm/gpio.h>
#ifdef CONFIG_BF60x
struct bfin_cpu_pm_fns *bfin_cpu_pm;

View file

@ -834,15 +834,6 @@ config GPIO_PCF857X
This driver provides an in-kernel interface to those GPIOs using
platform-neutral GPIO calls.
config GPIO_SX150X
bool "Semtech SX150x I2C GPIO expander (deprecated)"
depends on PINCTRL && I2C=y
select PINCTRL_SX150X
default n
help
Say yes here to provide support for Semtech SX150x-series I2C
GPIO expanders. The GPIO driver was replaced by a Pinctrl version.
config GPIO_TPIC2810
tristate "TPIC2810 8-Bit I2C GPO expander"
help

View file

@ -539,12 +539,12 @@ static int aspeed_gpio_request(struct gpio_chip *chip, unsigned int offset)
if (!have_gpio(gpiochip_get_data(chip), offset))
return -ENODEV;
return pinctrl_request_gpio(chip->base + offset);
return pinctrl_gpio_request(chip->base + offset);
}
static void aspeed_gpio_free(struct gpio_chip *chip, unsigned int offset)
{
pinctrl_free_gpio(chip->base + offset);
pinctrl_gpio_free(chip->base + offset);
}
static inline void __iomem *bank_debounce_reg(struct aspeed_gpio *gpio,

View file

@ -239,12 +239,12 @@ static int em_gio_to_irq(struct gpio_chip *chip, unsigned offset)
static int em_gio_request(struct gpio_chip *chip, unsigned offset)
{
return pinctrl_request_gpio(chip->base + offset);
return pinctrl_gpio_request(chip->base + offset);
}
static void em_gio_free(struct gpio_chip *chip, unsigned offset)
{
pinctrl_free_gpio(chip->base + offset);
pinctrl_gpio_free(chip->base + offset);
/* Set the GPIO as an input to ensure that the next GPIO request won't
* drive the GPIO pin as an output.

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