Commit 398b60a8 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge tag 'pwm/for-3.14-rc1' of... 

Merge tag 'pwm/for-3.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm

Pull pwm changes from Thierry Reding:
 "The patches for this release cycle include various enhancements
  (device tree support, better compile coverage, ...) for existing
  drivers.  There is a new driver for Atmel SoCs.

  Various drivers as well as the sysfs support received minor fixes and
  cleanups"

* tag 'pwm/for-3.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm:
  pwm: tiecap: Remove duplicate put_sync call
  pwm: tiehrpwm: use dev_err() instead of pr_err()
  pwm: pxa: remove unnecessary space before tabs
  pwm: ep93xx: split module author names
  pwm: use seq_puts() instead of seq_printf()
  pwm: atmel-pwm: Do not unprepare clock after successful registration
  of: Add Atmel PWM controller device tree binding
  pwm: atmel-pwm: Add Atmel PWM controller driver
  backlight: pwm_bl: Remove error message upon devm_kzalloc() failure
  pwm: pca9685: depends on I2C rather than REGMAP_I2C
  pwm: renesas-tpu: Enable driver compilation with COMPILE_TEST
  pwm: jz4740: Use devm_clk_get()
  pwm: jz4740: Pass device to clk_get()
  pwm: sysfs: Convert to use ATTRIBUTE_GROUPS macro
  pwm: pxa: Add device tree support
parents 028e219e 6691a199

Documentation/devicetree/bindings/pwm/atmel-pwm.txt

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Atmel PWM controller



Required properties:

  - compatible: should be one of:

    - "atmel,at91sam9rl-pwm"

    - "atmel,sama5d3-pwm"

  - reg: physical base address and length of the controller's registers

  - #pwm-cells: Should be 3. See pwm.txt in this directory for a

    description of the cells format.



Example:



	pwm0: pwm@f8034000 {

		compatible = "atmel,at91sam9rl-pwm";

		reg = <0xf8034000 0x400>;

		#pwm-cells = <3>;

	};



	pwmleds {

		compatible = "pwm-leds";



		d1 {

			label = "d1";

			pwms = <&pwm0 3 5000 0>

			max-brightness = <255>;

		};



		d2 {

			label = "d2";

			pwms = <&pwm0 1 5000 1>

			max-brightness = <255>;

		};

	};

Documentation/devicetree/bindings/pwm/pxa-pwm.txt

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Marvell PWM controller



Required properties:

- compatible: should be one or more of:

  - "marvell,pxa250-pwm"

  - "marvell,pxa270-pwm"

  - "marvell,pxa168-pwm"

  - "marvell,pxa910-pwm"

- reg: Physical base address and length of the registers used by the PWM channel

  Note that one device instance must be created for each PWM that is used, so the

  length covers only the register window for one PWM output, not that of the

  entire PWM controller.  Currently length is 0x10 for all supported devices.

- #pwm-cells: Should be 1.  This cell is used to specify the period in

  nanoseconds.



Example PWM device node:



pwm0: pwm@40b00000 {

	compatible = "marvell,pxa250-pwm";

	reg = <0x40b00000 0x10>;

	#pwm-cells = <1>;

};



Example PWM client node:



backlight {

	compatible = "pwm-backlight";

	pwms = <&pwm0 5000000>;

	...

}

drivers/pwm/Kconfig

+12 −2
Original line number Original line Diff line number Diff line
@@ -41,6 +41,15 @@ config PWM_AB8500 
	  To compile this driver as a module, choose M here: the module

	  To compile this driver as a module, choose M here: the module

	  will be called pwm-ab8500.

	  will be called pwm-ab8500.





config PWM_ATMEL

	tristate "Atmel PWM support"

	depends on ARCH_AT91

	help

	  Generic PWM framework driver for Atmel SoC.



	  To compile this driver as a module, choose M here: the module

	  will be called pwm-atmel.



config PWM_ATMEL_TCB

config PWM_ATMEL_TCB

	tristate "Atmel TC Block PWM support"

	tristate "Atmel TC Block PWM support"

	depends on ATMEL_TCLIB && OF

	depends on ATMEL_TCLIB && OF
@@ -122,7 +131,8 @@ config PWM_MXS 




config PWM_PCA9685

config PWM_PCA9685

	tristate "NXP PCA9685 PWM driver"

	tristate "NXP PCA9685 PWM driver"

	depends on OF && REGMAP_I2C

	depends on OF && I2C

	select REGMAP_I2C

	help

	help

	  Generic PWM framework driver for NXP PCA9685 LED controller.

	  Generic PWM framework driver for NXP PCA9685 LED controller.
@@ -149,7 +159,7 @@ config PWM_PXA 




config PWM_RENESAS_TPU

config PWM_RENESAS_TPU

	tristate "Renesas TPU PWM support"

	tristate "Renesas TPU PWM support"

	depends on ARCH_SHMOBILE

	depends on ARCH_SHMOBILE || COMPILE_TEST

	help

	help

	  This driver exposes the Timer Pulse Unit (TPU) PWM controller found

	  This driver exposes the Timer Pulse Unit (TPU) PWM controller found

	  in Renesas chips through the PWM API.

	  in Renesas chips through the PWM API.

drivers/pwm/Makefile

+1 −0
Original line number Original line Diff line number Diff line 
obj-$(CONFIG_PWM)		+= core.o

obj-$(CONFIG_PWM)		+= core.o

obj-$(CONFIG_PWM_SYSFS)		+= sysfs.o

obj-$(CONFIG_PWM_SYSFS)		+= sysfs.o

obj-$(CONFIG_PWM_AB8500)	+= pwm-ab8500.o

obj-$(CONFIG_PWM_AB8500)	+= pwm-ab8500.o

obj-$(CONFIG_PWM_ATMEL)		+= pwm-atmel.o

obj-$(CONFIG_PWM_ATMEL_TCB)	+= pwm-atmel-tcb.o

obj-$(CONFIG_PWM_ATMEL_TCB)	+= pwm-atmel-tcb.o

obj-$(CONFIG_PWM_BFIN)		+= pwm-bfin.o

obj-$(CONFIG_PWM_BFIN)		+= pwm-bfin.o

obj-$(CONFIG_PWM_EP93XX)	+= pwm-ep93xx.o

obj-$(CONFIG_PWM_EP93XX)	+= pwm-ep93xx.o

drivers/pwm/core.c

+3 −3
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@@ -808,12 +808,12 @@ static void pwm_dbg_show(struct pwm_chip *chip, struct seq_file *s) 
		seq_printf(s, " pwm-%-3d (%-20.20s):", i, pwm->label);

		seq_printf(s, " pwm-%-3d (%-20.20s):", i, pwm->label);





		if (test_bit(PWMF_REQUESTED, &pwm->flags))

		if (test_bit(PWMF_REQUESTED, &pwm->flags))

			seq_printf(s, " requested");

			seq_puts(s, " requested");





		if (test_bit(PWMF_ENABLED, &pwm->flags))

		if (test_bit(PWMF_ENABLED, &pwm->flags))

			seq_printf(s, " enabled");

			seq_puts(s, " enabled");





		seq_printf(s, "\n");

		seq_puts(s, "\n");

	}

	}

}

}

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