diff options
author | Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2022-11-17 13:08:03 +0200 |
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committer | Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2022-11-22 16:36:27 +0200 |
commit | 2fd36aa0ad1c714d0c92a025ae28c8721ffe108e (patch) | |
tree | 7d46e2d5b86d22a529203916aa29bea62c10466f /include/linux/platform_data | |
parent | 878cf979c1458f835d436debb886f9dfff59012a (diff) | |
download | linux-2fd36aa0ad1c714d0c92a025ae28c8721ffe108e.tar.bz2 |
pwm: lpss: Allow other drivers to enable PWM LPSS
The PWM LPSS device can be embedded in another device.
In order to enable it, allow that drivers to probe
a corresponding device.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Thierry Reding <thierry.reding@gmail.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Diffstat (limited to 'include/linux/platform_data')
-rw-r--r-- | include/linux/platform_data/x86/pwm-lpss.h | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/include/linux/platform_data/x86/pwm-lpss.h b/include/linux/platform_data/x86/pwm-lpss.h new file mode 100644 index 000000000000..296bd837ddbb --- /dev/null +++ b/include/linux/platform_data/x86/pwm-lpss.h @@ -0,0 +1,33 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* Intel Low Power Subsystem PWM controller driver */ + +#ifndef __PLATFORM_DATA_X86_PWM_LPSS_H +#define __PLATFORM_DATA_X86_PWM_LPSS_H + +#include <linux/types.h> + +struct device; + +struct pwm_lpss_chip; + +struct pwm_lpss_boardinfo { + unsigned long clk_rate; + unsigned int npwm; + unsigned long base_unit_bits; + /* + * Some versions of the IP may stuck in the state machine if enable + * bit is not set, and hence update bit will show busy status till + * the reset. For the rest it may be otherwise. + */ + bool bypass; + /* + * On some devices the _PS0/_PS3 AML code of the GPU (GFX0) device + * messes with the PWM0 controllers state, + */ + bool other_devices_aml_touches_pwm_regs; +}; + +struct pwm_lpss_chip *pwm_lpss_probe(struct device *dev, void __iomem *base, + const struct pwm_lpss_boardinfo *info); + +#endif /* __PLATFORM_DATA_X86_PWM_LPSS_H */ |