- 17 Dec, 2020 40 commits
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Alexandre Belloni authored
Add sama5d2 support. The sama5d2 has a new clock input, its gclk. Index 0 of the clock selector is the gclk instead of the peripheral clock divided by 2. For now, the gclk is not used because the peripheral clock divided by 8 already gives a 9.6ns resolution which is enough for most use cases. Signed-off-by:
Alexandre Belloni <alexandre.belloni@bootlin.com> Signed-off-by:
Thierry Reding <thierry.reding@gmail.com>
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Alexandre Belloni authored
The PWM is now a subnode of the used TCB. This is cleaner and it mainly allows to stop wasting TCB channels when only 2 or 4 PWMs are used. This also removes the atmel_tclib dependency Cc: Thierry Reding <thierry.reding@gmail.com> Cc: linux-pwm@vger.kernel.org Signed-off-by:
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Alexandre Belloni authored
Move the TCB pwm nodes under their parent. This removes the need for the tc-block property as there is now a child-parent relationship between the TC channel and the TC block. Move the documentation to the main file. Signed-off-by:
Rob Herring <robh@kernel.org> Signed-off-by:
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Grygorii Strashko authored
The devm_clk_get() may return -EPROBE_DEFER which is not handled properly by TI EHRPWM driver and causes unnecessary boot log messages. Hence, add proper deferred probe handling with new dev_err_probe() API. Signed-off-by:
Grygorii Strashko <grygorii.strashko@ti.com> Reviewed-by:
Vignesh Raghavendra <vigneshr@ti.com> Reviewed-by:
Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by:
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Hans de Goede authored
As the comment above the code setting the DPM_FLAG_NO_DIRECT_COMPLETE flag explains: /* * On Cherry Trail devices the GFX0._PS0 AML checks if the controller * is on and if it is not on it turns it on and restores what it * believes is the correct state to the PWM controller. * Because of this we must disallow direct-complete, which keeps the * controller (runtime)suspended, on resume to avoid 2 issues: * 1. The controller getting turned on without the linux-pm code * knowing about this. On devices where the controller is unused * this causes it to stay on during the next suspend causing high * battery drain (because S0i3 is not reached) * 2. The state restoring code unexpectedly messing with the controller */ The pm-core must not skip resume to avoid the GFX0._PS0 AML code messing with the PWM controller behind our back. But leaving the controller runtime-suspended (skipping runtime-resume + normal-suspend) during suspend is fine. Set the DPM_FLAG_SMART_SUSPEND flag to allow this. Reviewed-by:Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by:
Hans de Goede <hdegoede@redhat.com> Signed-off-by:
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Hans de Goede authored
ACPI LPSS devices use direct-complete style suspend/resume handling by default. We set the DPM_FLAG_SMART_PREPARE and define a prepare handler to disable this on Cherry Trail devices. Clean this up a bit by setting the DPM_FLAG_NO_DIRECT_COMPLETE flag for Cherry Trail devices, instead of defining a prepare handler. While at it also improve the comment explaining why this is necessary. Reviewed-by:
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Hans de Goede authored
pwm_lpss_is_updating() does a sanity check which should never fail. If the check does actually fail that is worth logging an error, especially since this means that we will skip making the requested changes to the PWM settings. Reviewed-by:
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Uwe Kleine-König authored
The ab8500 driver is the last one which doesn't (explicitly) use dynamic allocation of the pwm id. Looking through the kernel sources I didn't find a place that relies on this id. And with the device probed from device tree pdev->id is -1 anyhow; making this explicit looks beneficial, too. Signed-off-by:
Uwe Kleine-König <uwe@kleine-koenig.org> Signed-off-by:
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Uwe Kleine-König authored
zx_pwm_probe() called clk_prepare_enable() before; this must be undone in the error path. Fixes: 4836193c ("pwm: Add ZTE ZX PWM device driver") Signed-off-by:
Shawn Guo <shawn.guo@linaro.org> Signed-off-by:
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Uwe Kleine-König authored
pwmchip_add() doesn't emit an error message, so add one in the driver. Signed-off-by:
Linus Walleij <linus.walleij@linaro.org> Signed-off-by:
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Anson Huang authored
dev_err_probe() can reduce code size, uniform error handling and record the defer probe reason etc., use it to simplify the code. Signed-off-by:
Anson Huang <Anson.Huang@nxp.com> Acked-by:
Lee Jones <lee.jones@linaro.org> Acked-by:
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Anson Huang authored
dev_err_probe() can reduce code size, uniform error handling and record the defer probe reason etc., use it to simplify the code. Signed-off-by:
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Anson Huang authored
dev_err_probe() can reduce code size, uniform error handling and record the defer probe reason etc., use it to simplify the code. Signed-off-by:
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Yangtao Li authored
Use devm_platform_ioremap_resource() to simplify code. Signed-off-by:
Yangtao Li <tiny.windzz@gmail.com> Acked-by:
Claudiu Beznea <claudiu.beznea@microchip.com> Reviewed-by:
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Yangtao Li authored
Use devm_platform_ioremap_resource() to simplify code. Signed-off-by:
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Yangtao Li authored
Use devm_platform_ioremap_resource() to simplify code. While at it, also declare the "i" and "ret" variables on the same line since they are of the same type. Signed-off-by:
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Yangtao Li authored
Use devm_platform_ioremap_resource() to simplify code. Signed-off-by:
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Yangtao Li authored
Use devm_platform_ioremap_resource() to simplify code. Signed-off-by:
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Yangtao Li authored
Use devm_platform_ioremap_resource() to simplify code. Signed-off-by:
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Yangtao Li authored
Use devm_platform_ioremap_resource() to simplify code. Signed-off-by:
Matthias Brugger <matthias.bgg@gmail.com> Signed-off-by:
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Yangtao Li authored
Use devm_platform_ioremap_resource() to simplify code. Signed-off-by:
Nicolas Saenz Julienne <nsaenzjulienne@suse.de> Reviewed-by:
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Yangtao Li authored
Use devm_platform_ioremap_resource() to simplify code. Signed-off-by:
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Yangtao Li authored
Use devm_platform_ioremap_resource() to simplify code. Signed-off-by:
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Yangtao Li authored
Use devm_platform_ioremap_resource() to simplify code. Signed-off-by:
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Yangtao Li authored
Use devm_platform_ioremap_resource() to simplify code. Signed-off-by:
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Yangtao Li authored
Use devm_platform_ioremap_resource() to simplify code. Signed-off-by:
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Yangtao Li authored
Use devm_platform_ioremap_resource() to simplify code. Signed-off-by:
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Yangtao Li authored
Use devm_platform_ioremap_resource() to simplify code. Signed-off-by:
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Yangtao Li authored
Use devm_platform_ioremap_resource() to simplify code. Signed-off-by:
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Yangtao Li authored
Use devm_platform_ioremap_resource() to simplify code. Signed-off-by:
Heiko Stuebner <heiko@sntech.de> Reviewed-by:
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Yangtao Li authored
Use devm_platform_ioremap_resource() to simplify code. Signed-off-by:
Martin Blumenstingl <martin.blumenstingl@googlemail.com> Reviewed-by:
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Yangtao Li authored
Use devm_platform_ioremap_resource() to simplify code. Signed-off-by:
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Yangtao Li authored
Use devm_platform_ioremap_resource() to simplify code. Signed-off-by:
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Yangtao Li authored
Use devm_platform_ioremap_resource() to simplify code. Signed-off-by:
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Yangtao Li authored
Use devm_platform_ioremap_resource() to simplify code. Signed-off-by:
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Yangtao Li authored
Use devm_platform_ioremap_resource() to simplify code. Signed-off-by:
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Yangtao Li authored
Use devm_platform_ioremap_resource() to simplify code. Signed-off-by:
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Yangtao Li authored
Use devm_platform_ioremap_resource() to simplify code. Signed-off-by:
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Yangtao Li authored
Use devm_platform_ioremap_resource() to simplify code. Signed-off-by:
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Yangtao Li authored
Use devm_platform_ioremap_resource() to simplify code. Signed-off-by:
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