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>

diff --git a/drivers/pwm/pwm-lpss.h b/drivers/pwm/pwm-lpss.h
index 4ce6daa..bf84125 100644 (file)
--- a/drivers/pwm/pwm-lpss.h
+++ b/drivers/pwm/pwm-lpss.h
@@ -13,7 +13,7 @@
 #include <linux/pwm.h>
 #include <linux/types.h>
 
-struct device;
+#include <linux/platform_data/x86/pwm-lpss.h>
 
 #define LPSS_MAX_PWMS                  4
 
@@ -23,29 +23,9 @@ struct pwm_lpss_chip {
        const struct pwm_lpss_boardinfo *info;
 };
 
-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;
-};
-
 extern const struct pwm_lpss_boardinfo pwm_lpss_byt_info;
 extern const struct pwm_lpss_boardinfo pwm_lpss_bsw_info;
 extern const struct pwm_lpss_boardinfo pwm_lpss_bxt_info;
 extern const struct pwm_lpss_boardinfo pwm_lpss_tng_info;
 
-struct pwm_lpss_chip *pwm_lpss_probe(struct device *dev, void __iomem *base,
-                                    const struct pwm_lpss_boardinfo *info);
-
 #endif /* __PWM_LPSS_H */

diff --git a/include/linux/platform_data/x86/pwm-lpss.h b/include/linux/platform_data/x86/pwm-lpss.h
new file mode 100644 (file)
index 0000000..296bd83
--- /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 */