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x86: pinctrl: Add a way to get the pinctrl reg address
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@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Wolfgang Wallner <wolfgang.wallner@br-automation.com>
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@ -263,11 +263,23 @@ int pinctrl_read_pads(struct udevice *dev, ofnode node, const char *prop,
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int pinctrl_count_pads(struct udevice *dev, u32 *pads, int size);
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/**
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* intel_pinctrl_get_config_reg_addr() - Get address of the pin config registers
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* intel_pinctrl_get_config_reg_offset() - Get offset of pin config registers
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*
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* This works out the register offset of a pin within the p2sb region.
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*
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* @dev: Pinctrl device
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* @offset: GPIO offset within this device
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* @return register offset within the GPIO p2sb region
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* @return register offset of first register within the GPIO p2sb region
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*/
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u32 intel_pinctrl_get_config_reg_offset(struct udevice *dev, uint offset);
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/**
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* intel_pinctrl_get_config_reg_addr() - Get address of pin config registers
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*
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* This works out the absolute address of the registers for a pin
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* @dev: Pinctrl device
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* @offset: GPIO offset within this device
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* @return register address of first register within the GPIO p2sb region
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*/
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u32 intel_pinctrl_get_config_reg_addr(struct udevice *dev, uint offset);
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@ -24,7 +24,9 @@
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static int intel_gpio_direction_input(struct udevice *dev, uint offset)
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{
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struct udevice *pinctrl = dev_get_parent(dev);
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uint config_offset = intel_pinctrl_get_config_reg_addr(pinctrl, offset);
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uint config_offset;
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config_offset = intel_pinctrl_get_config_reg_offset(pinctrl, offset);
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pcr_clrsetbits32(pinctrl, config_offset,
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PAD_CFG0_MODE_MASK | PAD_CFG0_TX_STATE |
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@ -38,7 +40,9 @@ static int intel_gpio_direction_output(struct udevice *dev, uint offset,
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int value)
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{
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struct udevice *pinctrl = dev_get_parent(dev);
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uint config_offset = intel_pinctrl_get_config_reg_addr(pinctrl, offset);
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uint config_offset;
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config_offset = intel_pinctrl_get_config_reg_offset(pinctrl, offset);
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pcr_clrsetbits32(pinctrl, config_offset,
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PAD_CFG0_MODE_MASK | PAD_CFG0_RX_STATE |
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@ -68,10 +72,13 @@ static int intel_gpio_get_value(struct udevice *dev, uint offset)
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return 0;
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}
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static int intel_gpio_set_value(struct udevice *dev, unsigned offset, int value)
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static int intel_gpio_set_value(struct udevice *dev, unsigned int offset,
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int value)
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{
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struct udevice *pinctrl = dev_get_parent(dev);
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uint config_offset = intel_pinctrl_get_config_reg_addr(pinctrl, offset);
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uint config_offset;
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config_offset = intel_pinctrl_get_config_reg_offset(pinctrl, offset);
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pcr_clrsetbits32(pinctrl, config_offset, PAD_CFG0_TX_STATE,
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value ? PAD_CFG0_TX_STATE : 0);
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@ -18,7 +18,7 @@
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#define PCR_COMMON_IOSF_1_0 1
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static void *_pcr_reg_address(struct udevice *dev, uint offset)
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void *pcr_reg_address(struct udevice *dev, uint offset)
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{
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struct p2sb_child_platdata *pplat = dev_get_parent_platdata(dev);
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struct udevice *p2sb = dev_get_parent(dev);
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@ -55,7 +55,7 @@ uint pcr_read32(struct udevice *dev, uint offset)
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/* Ensure the PCR offset is correctly aligned */
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assert(IS_ALIGNED(offset, sizeof(uint32_t)));
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ptr = _pcr_reg_address(dev, offset);
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ptr = pcr_reg_address(dev, offset);
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val = readl(ptr);
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unmap_sysmem(ptr);
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@ -67,7 +67,7 @@ uint pcr_read16(struct udevice *dev, uint offset)
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/* Ensure the PCR offset is correctly aligned */
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check_pcr_offset_align(offset, sizeof(uint16_t));
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return readw(_pcr_reg_address(dev, offset));
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return readw(pcr_reg_address(dev, offset));
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}
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uint pcr_read8(struct udevice *dev, uint offset)
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@ -75,7 +75,7 @@ uint pcr_read8(struct udevice *dev, uint offset)
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/* Ensure the PCR offset is correctly aligned */
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check_pcr_offset_align(offset, sizeof(uint8_t));
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return readb(_pcr_reg_address(dev, offset));
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return readb(pcr_reg_address(dev, offset));
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}
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/*
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@ -86,7 +86,7 @@ uint pcr_read8(struct udevice *dev, uint offset)
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*/
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static void write_completion(struct udevice *dev, uint offset)
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{
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readl(_pcr_reg_address(dev, ALIGN_DOWN(offset, sizeof(uint32_t))));
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readl(pcr_reg_address(dev, ALIGN_DOWN(offset, sizeof(uint32_t))));
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}
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void pcr_write32(struct udevice *dev, uint offset, uint indata)
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@ -94,7 +94,7 @@ void pcr_write32(struct udevice *dev, uint offset, uint indata)
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/* Ensure the PCR offset is correctly aligned */
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assert(IS_ALIGNED(offset, sizeof(indata)));
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writel(indata, _pcr_reg_address(dev, offset));
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writel(indata, pcr_reg_address(dev, offset));
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/* Ensure the writes complete */
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write_completion(dev, offset);
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}
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@ -104,7 +104,7 @@ void pcr_write16(struct udevice *dev, uint offset, uint indata)
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/* Ensure the PCR offset is correctly aligned */
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check_pcr_offset_align(offset, sizeof(uint16_t));
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writew(indata, _pcr_reg_address(dev, offset));
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writew(indata, pcr_reg_address(dev, offset));
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/* Ensure the writes complete */
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write_completion(dev, offset);
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}
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@ -114,7 +114,7 @@ void pcr_write8(struct udevice *dev, uint offset, uint indata)
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/* Ensure the PCR offset is correctly aligned */
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check_pcr_offset_align(offset, sizeof(uint8_t));
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writeb(indata, _pcr_reg_address(dev, offset));
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writeb(indata, pcr_reg_address(dev, offset));
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/* Ensure the writes complete */
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write_completion(dev, offset);
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}
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@ -394,7 +394,7 @@ static int pinctrl_configure_pad(struct udevice *dev,
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return 0;
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}
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u32 intel_pinctrl_get_config_reg_addr(struct udevice *dev, uint offset)
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u32 intel_pinctrl_get_config_reg_offset(struct udevice *dev, uint offset)
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{
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struct intel_pinctrl_priv *priv = dev_get_priv(dev);
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const struct pad_community *comm = priv->comm;
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@ -407,9 +407,16 @@ u32 intel_pinctrl_get_config_reg_addr(struct udevice *dev, uint offset)
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return config_offset;
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}
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u32 intel_pinctrl_get_config_reg_addr(struct udevice *dev, uint offset)
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{
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uint config_offset = intel_pinctrl_get_config_reg_offset(dev, offset);
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return (u32)(ulong)pcr_reg_address(dev, config_offset);
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}
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u32 intel_pinctrl_get_config_reg(struct udevice *dev, uint offset)
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{
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uint config_offset = intel_pinctrl_get_config_reg_addr(dev, offset);
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uint config_offset = intel_pinctrl_get_config_reg_offset(dev, offset);
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return pcr_read32(dev, config_offset);
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}
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@ -132,4 +132,13 @@ int p2sb_set_port_id(struct udevice *dev, int portid);
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*/
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int p2sb_get_port_id(struct udevice *dev);
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/**
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* pcr_reg_address() Convert an offset in p2sb space to an absolute address
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*
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* @dev: Child device (whose parent is UCLASS_P2SB)
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* @offset: Offset within that child's address space
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* @return pointer to that offset within the child's address space
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*/
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void *pcr_reg_address(struct udevice *dev, uint offset);
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#endif
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