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path: root/drivers/pwm
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2017-11-20pwm: imx: Enable PWM support on i.MX53Martyn Welch1-0/+2
Add missing parts for i.MX53 PWM support Acked-by: Nandor Han <nandor.han@ge.com> Signed-off-by: Martyn Welch <martyn.welch@collabora.co.uk> Cc: Stefano Babic <sbabic@denx.de> Acked-by: Stefano Babic <sbabic@denx.de>
2017-07-28dm: tegra: pwm: Convert to livetreeSimon Glass1-1/+1
Update the tegra pwm driver to support a live device tree. Signed-off-by: Simon Glass <sjg@chromium.org> Tested-by: Marcel Ziswiler <marcel.ziswiler@toradex.com> Tested-on: Beaver, Jetson-TK1 Tested-by: Stephen Warren <swarren@nvidia.com>
2017-07-27rockchip: pwm: add mask for config settingKever Yang1-0/+1
Use mask to clear old setting before direct set the new config, or else there it will mess up the config when it's not the same with default value. Fixes: 3851059 rockchip: Setup default PWM flags Signed-off-by: Kever Yang <kever.yang@rock-chips.com> Acked-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com> Reviewed-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
2017-06-09rockchip: Setup default PWM flagsSimon Glass1-0/+1
At present if the Signed-off-by: Simon Glass <sjg@chromium.org> Fixes: 874ee59 (rockchip: pwm: implement pwm_set_invert())
2017-06-01dm: Rename dev_addr..() functionsSimon Glass3-3/+3
These support the flat device tree. We want to use the dev_read_..() prefix for functions that support both flat tree and live tree. So rename the existing functions to avoid confusion. In the end we will have: 1. dev_read_addr...() - works on devices, supports flat/live tree 2. devfdt_get_addr...() - current functions, flat tree only 3. of_get_address() etc. - new functions, live tree only All drivers will be written to use 1. That function will in turn call either 2 or 3 depending on whether the flat or live tree is in use. Note this involves changing some dead code - the imx_lpi2c.c file. Signed-off-by: Simon Glass <sjg@chromium.org>
2017-05-10dm: sandbox: pwm: add test for pwm_set_invert()Kever Yang1-0/+16
Add test case for new interface set_invert(). Signed-off-by: Kever Yang <kever.yang@rock-chips.com> Acked-by: Simon Glass <sjg@chromium.org> Fix typo in subject and build error in sandbox_pwm_set_invert(): Signed-off-by: Simon Glass <sjg@chromium.org>
2017-05-10rockchip: pwm: implement pwm_set_invert()Kever Yang1-1/+16
Rockchip pwm need to init polarity, implement pwm_set_invert() to do it. Signed-off-by: Kever Yang <kever.yang@rock-chips.com> Acked-by: Simon Glass <sjg@chromium.org>
2017-05-10power: regulator: pwm: support pwm polarity settingKever Yang1-0/+10
The latest kernel PWM drivers enable the polarity settings. When system run from U-Boot to kerenl, if there are differences in polarity set or duty cycle, the PMW will re-init: close -> set polarity and duty cycle -> enable the PWM. The power supply controled by pwm regulator may have voltage shaking, which lead to the system not stable. Signed-off-by: Elaine Zhang <zhangqing@rock-chips.com> Signed-off-by: Kever Yang <kever.yang@rock-chips.com> Acked-by: Simon Glass <sjg@chromium.org>
2017-04-27dm: sandbox: pwm: Add a basic pwm testSimon Glass3-0/+84
Unfortunately a test for the PWM uclass was not included when it was submitted. This was noticed when trying to add more functionality: http://patchwork.ozlabs.org/patch/748172/ Add a simple test to get us started. Signed-off-by: Simon Glass <sjg@chromium.org>
2017-02-09pwm: remove unneeded ifdef CONFIG_DM_PWM ... endifMasahiro Yamada1-7/+6
Both CONFIG_PWM_TEGRA and CONFIG_PWM_EXYNOS depend on CONFIG_DM_PWM, i.e. they are already guarded by Kconfig correctly. Remove unneeded ifdef CONFIG_DM_PWM ... endif. While we are here, let's tidy up alignment and sort the lines alphabetically in Makefile. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2016-11-29pwm: imx: increase support up to PWM8 for i.MX6SXChristoph Fritz1-1/+11
This patch increases supported PWMs from previously PWM4 now up to PWM8 if i.MX6SX is in use. Signed-off-by: Christoph Fritz <chf.fritz@googlemail.com>
2016-10-07PWM: Correct misspellings of "module" in context of PWMRobert P. J. Day3-3/+3
Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca> Acked-by: Heiko Schocher <hs@denx.de>
2016-09-22rk_pwm: remove grf setting code from driverKever Yang1-11/+0
We consider the grf setting for pwm controller select as the system operation instead of driver operation, move it to soc init, let's remove it from pwm driver first. Signed-off-by: Kever Yang <kever.yang@rock-chips.com> Acked-by: Simon Glass <sjg@chromium.org>
2016-09-22rk_pwm: use clock framework API to get module clockKever Yang1-3/+14
This patch use clock API instead of hardcode for get pwm clock. Signed-off-by: Kever Yang <kever.yang@rock-chips.com> Acked-by: Simon Glass <sjg@chromium.org> Fix printf() to debug() nit: Signed-off-by: Simon Glass <sjg@chromium.org>
2016-05-25exynos: pwm: Add a driver for the exynos5 PWMSimon Glass3-0/+130
This driver supports the standard PWM API. There are 5 PWMs. Four are used normally and the last is normally used as a timer. Signed-off-by: Simon Glass <sjg@chromium.org> Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
2016-02-16tegra: video: Move LCD driver to use the DM PWM driverSimon Glass1-0/+1
Use the driver-model PWM driver in preference to the old code. Signed-off-by: Simon Glass <sjg@chromium.org> Acked-by: Anatolij Gustschin <agust@denx.de> Signed-off-by: Tom Warren <twarren@nvidia.com>
2016-02-16tegra: Convert CONFIG_PWM_TEGRA to KconfigSimon Glass1-0/+8
Move this option to Kconfig and clean up the header files. Adjust the only user (the LCD driver) to work with the new driver. Signed-off-by: Simon Glass <sjg@chromium.org> Signed-off-by: Tom Warren <twarren@nvidia.com>
2016-02-16tegra: pwm: Add a driver for the tegra PWMSimon Glass2-0/+88
This PWM supports four channels. The driver always uses the 32KHz clock, and adjusts the duty cycle accordingly. Signed-off-by: Simon Glass <sjg@chromium.org> Signed-off-by: Tom Warren <twarren@nvidia.com>
2016-01-22pwm: rockchip: Add a PWM driver for Rockchip SoCsSimon Glass3-0/+113
Add a simple driver which implements the standard PWM uclass interface. Signed-off-by: Simon Glass <sjg@chromium.org>
2016-01-22dm: pwm: Add a PWM uclassSimon Glass3-0/+47
Add a uclass that supports Pulse Width Modulation (PWM) devices. It provides methods to enable/disable and configure the device. Signed-off-by: Simon Glass <sjg@chromium.org>
2015-05-26pwm: imx: Remove unreachable codeAxel Lin1-4/+0
The break after return is unreachable code, remove it. Signed-off-by: Axel Lin <axel.lin@ingics.com> Acked-by: Stefano Babic <sbabic@denx.de> Acked-by: Heiko Schocher <hs@denx.de>
2015-05-26pwm: imx: Prevent NULL pointer dereferenceAxel Lin1-0/+12
pwm_id_to_reg() can return NULL, so add NULL testing to prevent NULL pointer dereference. Signed-off-by: Axel Lin <axel.lin@ingics.com> Acked-by: Stefano Babic <sbabic@denx.de> Acked-by: Heiko Schocher <hs@denx.de>
2015-05-15bugfix i.mx6 pwm: prevent overflow of period_c * duty_nsBrecht Neyrinck1-1/+1
Prevent overflow by casting duty_ns to ull first. This bug came up when trying to create a 200 Hz PWM Signed-off-by: Brecht Neyrinck <bnrn@psicontrol.com> Acked-by: Heiko Schocher<hs@denx.de>
2014-07-23pwm, imx6: add support for pwm modul on imx6Heiko Schocher4-0/+161
add basic support for the pwm modul found on imx6. Pieces of this code are based on linux code from drivers/pwm/pwm-imx.c Commit "cd3de83f1476 Linux 3.16-rc4" Signed-off-by: Heiko Schocher <hs@denx.de> Acked-by: Stefano Babic <sbabic@denx.de> Cc: Wolfgang Denk <wd@denx.de>
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