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path: root/drivers/pwm/pwm-jz4740.c
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2019-05-30treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 151Thomas Gleixner1-10/+1
Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version you should have received a copy of the gnu general public license along with this program if not write to the free software foundation inc 675 mass ave cambridge ma 02139 usa extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 35 file(s). Signed-off-by: Thomas Gleixner <[email protected]> Reviewed-by: Armijn Hemel <[email protected]> Reviewed-by: Richard Fontana <[email protected]> Reviewed-by: Allison Randal <[email protected]> Cc: [email protected] Link: https://lkml.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2018-03-28pwm: jz4740: Add support for devicetreePaul Cercueil1-0/+14
Add support for probing the pwm-jz4740 directly from devicetree. Signed-off-by: Paul Cercueil <[email protected]> Reviewed-by: Rob Herring <[email protected]> Signed-off-by: Thierry Reding <[email protected]>
2018-03-28pwm: jz4740: Implement ->set_polarity()Paul Cercueil1-0/+19
This permits clients of this driver to specify the polarity to use for their PWM channel. Signed-off-by: Paul Cercueil <[email protected]> Signed-off-by: Thierry Reding <[email protected]>
2018-03-28pwm: jz4740: Make disable operation compatible with TCU2 modeMaarten ter Huurne1-1/+7
On the JZ4750 and later SoCs, channel 1 and 2 operate in a different way (TCU2 mode) as the other channels. If a TCU2 mode counter is stopped before its PWM functionality is disabled, the output is not guaranteed to return to the initial level. Signed-off-by: Maarten ter Huurne <[email protected]> Signed-off-by: Thierry Reding <[email protected]>
2017-05-22pwm: jz4740: Let the pinctrl driver configure the pinsPaul Cercueil1-29/+0
Now that the JZ4740 and similar SoCs have a pinctrl driver, we rely on the pins being properly configured before the driver probes. One inherent problem of this new approach is that the pinctrl framework does not allow us to configure each pin on demand, when the various PWM channels are requested or released. For instance, the PWM channels can be configured from sysfs, which would require all PWM pins to be configured properly beforehand for the PWM function, eventually causing conflicts with other platform or board drivers. The proper solution here would be to modify the pwm-jz4740 driver to handle only one PWM channel, and create an instance of this driver for each one of the 8 PWM channels. Then, it could use the pinctrl framework to dynamically configure the PWM pin it controls. Until this can be done, the only jz4740 board supported upstream (Qi lb60) can configure all of its connected PWM pins in PWM function mode, since those are not used by other drivers nor by GPIOs on the board. Signed-off-by: Paul Cercueil <[email protected]> Acked-by: Thierry Reding <[email protected]> Signed-off-by: Linus Walleij <[email protected]>
2014-10-20pwm: drop owner assignment from platform_driversWolfram Sang1-1/+0
A platform_driver does not need to set an owner, it will be populated by the driver core. Signed-off-by: Wolfram Sang <[email protected]>
2013-12-12pwm: jz4740: Use devm_clk_get()Lars-Peter Clausen1-17/+3
Using the managed version of clk_get() makes the code a bit shorter and the error paths less complicated. Signed-off-by: Lars-Peter Clausen <[email protected]> Signed-off-by: Thierry Reding <[email protected]>
2013-12-12pwm: jz4740: Pass device to clk_get()Lars-Peter Clausen1-1/+1
In preparation to switching the jz4740 clk driver to the common clk framework make sure to pass the device to clk_get(). Signed-off-by: Lars-Peter Clausen <[email protected]> Signed-off-by: Thierry Reding <[email protected]>
2012-11-28pwm: remove use of __devexitBill Pemberton1-1/+1
CONFIG_HOTPLUG is going away as an option so __devexit is no longer needed. Signed-off-by: Bill Pemberton <[email protected]> Acked-by: Thierry Reding <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
2012-11-28pwm: remove use of __devinitBill Pemberton1-1/+1
CONFIG_HOTPLUG is going away as an option so __devinit is no longer needed. Signed-off-by: Bill Pemberton <[email protected]> Acked-by: Thierry Reding <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
2012-11-28pwm: remove use of __devexit_pBill Pemberton1-1/+1
CONFIG_HOTPLUG is going away as an option so __devexit_p is no longer needed. Signed-off-by: Bill Pemberton <[email protected]> Acked-by: Thierry Reding <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
2012-10-05pwm: Add Ingenic JZ4740 supportThierry Reding1-0/+221
This commit moves the driver to drivers/pwm and converts it to the new PWM framework. Signed-off-by: Thierry Reding <[email protected]> Acked-by: Lars-Peter Clausen <[email protected]> Tested-by: Lars-Peter Clausen <[email protected]> Acked-by: Ralf Baechle <[email protected]>
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