pinctrl: uniphier: support drive-strength configuration
This allows our DT to specify drive-strength property.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
diff --git a/drivers/pinctrl/uniphier/pinctrl-uniphier.h b/drivers/pinctrl/uniphier/pinctrl-uniphier.h
index b3257f4..8f83eca 100644
--- a/drivers/pinctrl/uniphier/pinctrl-uniphier.h
+++ b/drivers/pinctrl/uniphier/pinctrl-uniphier.h
@@ -12,11 +12,44 @@
#include <linux/kernel.h>
#include <linux/types.h>
-#define UNIPHIER_PIN_ATTR_PACKED(iectrl) (iectrl)
+/* drive strength control register number */
+#define UNIPHIER_PIN_DRVCTRL_SHIFT 0
+#define UNIPHIER_PIN_DRVCTRL_BITS 9
+#define UNIPHIER_PIN_DRVCTRL_MASK ((1U << (UNIPHIER_PIN_DRVCTRL_BITS)) \
+ - 1)
-static inline unsigned int uniphier_pin_get_iectrl(unsigned long data)
+/* drive control type */
+#define UNIPHIER_PIN_DRV_TYPE_SHIFT ((UNIPHIER_PIN_DRVCTRL_SHIFT) + \
+ (UNIPHIER_PIN_DRVCTRL_BITS))
+#define UNIPHIER_PIN_DRV_TYPE_BITS 2
+#define UNIPHIER_PIN_DRV_TYPE_MASK ((1U << (UNIPHIER_PIN_DRV_TYPE_BITS)) \
+ - 1)
+
+/* drive control type */
+enum uniphier_pin_drv_type {
+ UNIPHIER_PIN_DRV_1BIT, /* 2 level control: 4/8 mA */
+ UNIPHIER_PIN_DRV_2BIT, /* 4 level control: 8/12/16/20 mA */
+ UNIPHIER_PIN_DRV_3BIT, /* 8 level control: 4/5/7/9/11/12/14/16 mA */
+};
+
+#define UNIPHIER_PIN_DRVCTRL(x) \
+ (((x) & (UNIPHIER_PIN_DRVCTRL_MASK)) << (UNIPHIER_PIN_DRVCTRL_SHIFT))
+#define UNIPHIER_PIN_DRV_TYPE(x) \
+ (((x) & (UNIPHIER_PIN_DRV_TYPE_MASK)) << (UNIPHIER_PIN_DRV_TYPE_SHIFT))
+
+#define UNIPHIER_PIN_ATTR_PACKED(drvctrl, drv_type) \
+ UNIPHIER_PIN_DRVCTRL(drvctrl) | \
+ UNIPHIER_PIN_DRV_TYPE(drv_type)
+
+static inline unsigned int uniphier_pin_get_drvctrl(unsigned int data)
{
- return data;
+ return (data >> UNIPHIER_PIN_DRVCTRL_SHIFT) & UNIPHIER_PIN_DRVCTRL_MASK;
+}
+
+static inline unsigned int uniphier_pin_get_drv_type(unsigned int data)
+{
+ return (data >> UNIPHIER_PIN_DRV_TYPE_SHIFT) &
+ UNIPHIER_PIN_DRV_TYPE_MASK;
}
/**
@@ -73,10 +106,11 @@
#define UNIPHIER_PINCTRL_CAPS_MUX_4BIT BIT(0)
};
-#define UNIPHIER_PINCTRL_PIN(a, b) \
+#define UNIPHIER_PINCTRL_PIN(a, b, c, d) \
{ \
.number = a, \
- .data = UNIPHIER_PIN_ATTR_PACKED(b), \
+ .name = b, \
+ .data = UNIPHIER_PIN_ATTR_PACKED(c, d), \
}
#define __UNIPHIER_PINCTRL_GROUP(grp) \