[PATCH 048/108] x86: pinctrl: Add a way to get the pinctrl reg address
Simon Glass
sjg at chromium.org
Mon Jan 27 06:05:55 CET 2020
At present we can query the offset of a pinctrl register within the p2sb.
For ACPI we need to get the actual address of the register. Add a function
to handle this and rename the old one to more accurately reflect its
purpose.
Signed-off-by: Simon Glass <sjg at chromium.org>
---
arch/x86/include/asm/intel_pinctrl.h | 16 ++++++++++++++--
drivers/gpio/intel_gpio.c | 15 +++++++++++----
drivers/misc/p2sb-uclass.c | 16 ++++++++--------
drivers/pinctrl/intel/pinctrl.c | 11 +++++++++--
include/p2sb.h | 9 +++++++++
5 files changed, 51 insertions(+), 16 deletions(-)
diff --git a/arch/x86/include/asm/intel_pinctrl.h b/arch/x86/include/asm/intel_pinctrl.h
index 72fd9246cb..ebdaa39265 100644
--- a/arch/x86/include/asm/intel_pinctrl.h
+++ b/arch/x86/include/asm/intel_pinctrl.h
@@ -262,11 +262,23 @@ int pinctrl_read_pads(struct udevice *dev, ofnode node, const char *prop,
int pinctrl_count_pads(struct udevice *dev, u32 *pads, int size);
/**
- * intel_pinctrl_get_config_reg_addr() - Get address of the pin config registers
+ * intel_pinctrl_get_config_reg_offset() - Get offset of pin config registers
*
+ * This works out the register offset of a pin within the p2sb region.
+ *
+ * @dev: Pinctrl device
+ * @offset: GPIO offset within this device
+ * @return register offset of first register within the GPIO p2sb region
+ */
+u32 intel_pinctrl_get_config_reg_offset(struct udevice *dev, uint offset);
+
+/**
+ * intel_pinctrl_get_config_reg_offset() - Get address of pin config registers
+ *
+ * This works out the absolute address of the registers for a pin
* @dev: Pinctrl device
* @offset: GPIO offset within this device
- * @return register offset within the GPIO p2sb region
+ * @return register offset of first register within the GPIO p2sb region
*/
u32 intel_pinctrl_get_config_reg_addr(struct udevice *dev, uint offset);
diff --git a/drivers/gpio/intel_gpio.c b/drivers/gpio/intel_gpio.c
index 4bf1c9ddc4..c56b362c4e 100644
--- a/drivers/gpio/intel_gpio.c
+++ b/drivers/gpio/intel_gpio.c
@@ -23,7 +23,9 @@
static int intel_gpio_direction_input(struct udevice *dev, uint offset)
{
struct udevice *pinctrl = dev_get_parent(dev);
- uint config_offset = intel_pinctrl_get_config_reg_addr(pinctrl, offset);
+ uint config_offset;
+
+ config_offset = intel_pinctrl_get_config_reg_offset(pinctrl, offset);
pcr_clrsetbits32(pinctrl, config_offset,
PAD_CFG0_MODE_MASK | PAD_CFG0_TX_STATE |
@@ -37,7 +39,9 @@ static int intel_gpio_direction_output(struct udevice *dev, uint offset,
int value)
{
struct udevice *pinctrl = dev_get_parent(dev);
- uint config_offset = intel_pinctrl_get_config_reg_addr(pinctrl, offset);
+ uint config_offset;
+
+ config_offset = intel_pinctrl_get_config_reg_offset(pinctrl, offset);
pcr_clrsetbits32(dev, config_offset,
PAD_CFG0_MODE_MASK | PAD_CFG0_RX_STATE |
@@ -67,10 +71,13 @@ static int intel_gpio_get_value(struct udevice *dev, uint offset)
return 0;
}
-static int intel_gpio_set_value(struct udevice *dev, unsigned offset, int value)
+static int intel_gpio_set_value(struct udevice *dev, unsigned int offset,
+ int value)
{
struct udevice *pinctrl = dev_get_parent(dev);
- uint config_offset = intel_pinctrl_get_config_reg_addr(pinctrl, offset);
+ uint config_offset;
+
+ config_offset = intel_pinctrl_get_config_reg_offset(pinctrl, offset);
pcr_clrsetbits32(dev, config_offset, PAD_CFG0_TX_STATE,
value ? PAD_CFG0_TX_STATE : 0);
diff --git a/drivers/misc/p2sb-uclass.c b/drivers/misc/p2sb-uclass.c
index a198700b5f..1d00a73f2f 100644
--- a/drivers/misc/p2sb-uclass.c
+++ b/drivers/misc/p2sb-uclass.c
@@ -16,7 +16,7 @@
#define PCR_COMMON_IOSF_1_0 1
-static void *_pcr_reg_address(struct udevice *dev, uint offset)
+void *pcr_reg_address(struct udevice *dev, uint offset)
{
struct p2sb_child_platdata *pplat = dev_get_parent_platdata(dev);
struct udevice *p2sb = dev_get_parent(dev);
@@ -53,7 +53,7 @@ uint pcr_read32(struct udevice *dev, uint offset)
/* Ensure the PCR offset is correctly aligned */
assert(IS_ALIGNED(offset, sizeof(uint32_t)));
- ptr = _pcr_reg_address(dev, offset);
+ ptr = pcr_reg_address(dev, offset);
val = readl(ptr);
unmap_sysmem(ptr);
@@ -65,7 +65,7 @@ uint pcr_read16(struct udevice *dev, uint offset)
/* Ensure the PCR offset is correctly aligned */
check_pcr_offset_align(offset, sizeof(uint16_t));
- return readw(_pcr_reg_address(dev, offset));
+ return readw(pcr_reg_address(dev, offset));
}
uint pcr_read8(struct udevice *dev, uint offset)
@@ -73,7 +73,7 @@ uint pcr_read8(struct udevice *dev, uint offset)
/* Ensure the PCR offset is correctly aligned */
check_pcr_offset_align(offset, sizeof(uint8_t));
- return readb(_pcr_reg_address(dev, offset));
+ return readb(pcr_reg_address(dev, offset));
}
/*
@@ -84,7 +84,7 @@ uint pcr_read8(struct udevice *dev, uint offset)
*/
static void write_completion(struct udevice *dev, uint offset)
{
- readl(_pcr_reg_address(dev, ALIGN_DOWN(offset, sizeof(uint32_t))));
+ readl(pcr_reg_address(dev, ALIGN_DOWN(offset, sizeof(uint32_t))));
}
void pcr_write32(struct udevice *dev, uint offset, uint indata)
@@ -92,7 +92,7 @@ void pcr_write32(struct udevice *dev, uint offset, uint indata)
/* Ensure the PCR offset is correctly aligned */
assert(IS_ALIGNED(offset, sizeof(indata)));
- writel(indata, _pcr_reg_address(dev, offset));
+ writel(indata, pcr_reg_address(dev, offset));
/* Ensure the writes complete */
write_completion(dev, offset);
}
@@ -102,7 +102,7 @@ void pcr_write16(struct udevice *dev, uint offset, uint indata)
/* Ensure the PCR offset is correctly aligned */
check_pcr_offset_align(offset, sizeof(uint16_t));
- writew(indata, _pcr_reg_address(dev, offset));
+ writew(indata, pcr_reg_address(dev, offset));
/* Ensure the writes complete */
write_completion(dev, offset);
}
@@ -112,7 +112,7 @@ void pcr_write8(struct udevice *dev, uint offset, uint indata)
/* Ensure the PCR offset is correctly aligned */
check_pcr_offset_align(offset, sizeof(uint8_t));
- writeb(indata, _pcr_reg_address(dev, offset));
+ writeb(indata, pcr_reg_address(dev, offset));
/* Ensure the writes complete */
write_completion(dev, offset);
}
diff --git a/drivers/pinctrl/intel/pinctrl.c b/drivers/pinctrl/intel/pinctrl.c
index bd58b85dd8..68955f66ed 100644
--- a/drivers/pinctrl/intel/pinctrl.c
+++ b/drivers/pinctrl/intel/pinctrl.c
@@ -391,7 +391,7 @@ static int pinctrl_configure_pad(struct udevice *dev,
return 0;
}
-u32 intel_pinctrl_get_config_reg_addr(struct udevice *dev, uint offset)
+u32 intel_pinctrl_get_config_reg_offset(struct udevice *dev, uint offset)
{
struct intel_pinctrl_priv *priv = dev_get_priv(dev);
const struct pad_community *comm = priv->comm;
@@ -404,9 +404,16 @@ u32 intel_pinctrl_get_config_reg_addr(struct udevice *dev, uint offset)
return config_offset;
}
+u32 intel_pinctrl_get_config_reg_addr(struct udevice *dev, uint offset)
+{
+ uint config_offset = intel_pinctrl_get_config_reg_offset(dev, offset);
+
+ return (u32)(ulong)pcr_reg_address(dev, config_offset);
+}
+
u32 intel_pinctrl_get_config_reg(struct udevice *dev, uint offset)
{
- uint config_offset = intel_pinctrl_get_config_reg_addr(dev, offset);
+ uint config_offset = intel_pinctrl_get_config_reg_offset(dev, offset);
return pcr_read32(dev, config_offset);
}
diff --git a/include/p2sb.h b/include/p2sb.h
index 60c7f70773..74eb08b7ff 100644
--- a/include/p2sb.h
+++ b/include/p2sb.h
@@ -132,4 +132,13 @@ int p2sb_set_port_id(struct udevice *dev, int portid);
*/
int p2sb_get_port_id(struct udevice *dev);
+/**
+ * pcr_reg_address() Convert an offset in p2sb space to an absolute address
+ *
+ * @dev: Child device (whose parent is UCLASS_P2SB)
+ * @offset: Offset within that child's address space
+ * @return pointer to that offset within the child's address space
+ */
+void *pcr_reg_address(struct udevice *dev, uint offset);
+
#endif
--
2.25.0.341.g760bfbb309-goog
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