x86: ivybridge: Convert pch.c to use DM PCI API

Convert this file to use the driver model PCI API.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>

arch/x86/cpu/ivybridge/lpc.c

@@ -354,10 +354,10 @@ static void enable_clock_gating(struct udevice *pch)
 	reg16 |= (1 << 2) | (1 << 11);
 	dm_pci_write_config16(pch, GEN_PMCON_1, reg16);
 
-	pch_iobp_update(0xEB007F07, ~0UL, (1 << 31));
-	pch_iobp_update(0xEB004000, ~0UL, (1 << 7));
-	pch_iobp_update(0xEC007F07, ~0UL, (1 << 31));
-	pch_iobp_update(0xEC004000, ~0UL, (1 << 7));
+	pch_iobp_update(pch, 0xEB007F07, ~0UL, (1 << 31));
+	pch_iobp_update(pch, 0xEB004000, ~0UL, (1 << 7));
+	pch_iobp_update(pch, 0xEC007F07, ~0UL, (1 << 31));
+	pch_iobp_update(pch, 0xEC004000, ~0UL, (1 << 7));
 
 	reg32 = readl(RCB_REG(CG));
 	reg32 |= (1 << 31);
@@ -573,7 +573,7 @@ static int lpc_init_extra(struct udevice *dev)
 	pch_power_options(pch);
 
 	/* Initialize power management */
-	switch (pch_silicon_type()) {
+	switch (pch_silicon_type(pch)) {
 	case PCH_TYPE_CPT: /* CougarPoint */
 		cpt_pm_init(pch);
 		break;

arch/x86/cpu/ivybridge/pch.c

@@ -14,32 +14,34 @@
 static int pch_revision_id = -1;
 static int pch_type = -1;
 
-int pch_silicon_revision(void)
+int pch_silicon_revision(struct udevice *dev)
 {
-	pci_dev_t dev;
+	u8 val;
 
-	dev = PCH_LPC_DEV;
+	if (pch_revision_id < 0) {
+		dm_pci_read_config8(dev, PCI_REVISION_ID, &val);
+		pch_revision_id = val;
+	}
 
-	if (pch_revision_id < 0)
-		pch_revision_id = x86_pci_read_config8(dev, PCI_REVISION_ID);
 	return pch_revision_id;
 }
 
-int pch_silicon_type(void)
+int pch_silicon_type(struct udevice *dev)
 {
-	pci_dev_t dev;
+	u8 val;
 
-	dev = PCH_LPC_DEV;
+	if (pch_type < 0) {
+		dm_pci_read_config8(dev, PCI_DEVICE_ID + 1, &val);
+		pch_type = val;
+	}
 
-	if (pch_type < 0)
-		pch_type = x86_pci_read_config8(dev, PCI_DEVICE_ID + 1);
 	return pch_type;
 }
 
-int pch_silicon_supported(int type, int rev)
+int pch_silicon_supported(struct udevice *dev, int type, int rev)
 {
-	int cur_type = pch_silicon_type();
-	int cur_rev = pch_silicon_revision();
+	int cur_type = pch_silicon_type(dev);
+	int cur_rev = pch_silicon_revision(dev);
 
 	switch (type) {
 	case PCH_TYPE_CPT:
@@ -78,7 +80,8 @@ static inline int iobp_poll(void)
 	return 0;
 }
 
-void pch_iobp_update(u32 address, u32 andvalue, u32 orvalue)
+void pch_iobp_update(struct udevice *dev, u32 address, u32 andvalue,
+		     u32 orvalue)
 {
 	u32 data;
 
@@ -86,7 +89,7 @@ void pch_iobp_update(u32 address, u32 andvalue, u32 orvalue)
 	writel(address, RCB_REG(IOBPIRI));
 
 	/* READ OPCODE */
-	if (pch_silicon_supported(PCH_TYPE_CPT, PCH_STEP_B0))
+	if (pch_silicon_supported(dev, PCH_TYPE_CPT, PCH_STEP_B0))
 		writel(IOBPS_RW_BX, RCB_REG(IOBPS));
 	else
 		writel(IOBPS_READ_AX, RCB_REG(IOBPS));
@@ -109,7 +112,7 @@ void pch_iobp_update(u32 address, u32 andvalue, u32 orvalue)
 	data |= orvalue;
 
 	/* WRITE OPCODE */
-	if (pch_silicon_supported(PCH_TYPE_CPT, PCH_STEP_B0))
+	if (pch_silicon_supported(dev, PCH_TYPE_CPT, PCH_STEP_B0))
 		writel(IOBPS_RW_BX, RCB_REG(IOBPS));
 	else
 		writel(IOBPS_WRITE_AX, RCB_REG(IOBPS));

arch/x86/cpu/ivybridge/sata.c

@@ -51,7 +51,7 @@ static void common_sata_init(struct udevice *dev, unsigned int port_map)
 	dm_pci_write_config32(dev, 0x94, ((port_map ^ 0x3f) << 24) | 0x183);
 }
 
-static void bd82x6x_sata_init(struct udevice *dev)
+static void bd82x6x_sata_init(struct udevice *dev, struct udevice *pch)
 {
 	unsigned int port_map, speed_support, port_tx;
 	const void *blob = gd->fdt_blob;
@@ -170,11 +170,11 @@ static void bd82x6x_sata_init(struct udevice *dev)
 	/* Set Gen3 Transmitter settings if needed */
 	port_tx = fdtdec_get_int(blob, node, "intel,sata-port0-gen3-tx", 0);
 	if (port_tx)
-		pch_iobp_update(SATA_IOBP_SP0G3IR, 0, port_tx);
+		pch_iobp_update(pch, SATA_IOBP_SP0G3IR, 0, port_tx);
 
 	port_tx = fdtdec_get_int(blob, node, "intel,sata-port1-gen3-tx", 0);
 	if (port_tx)
-		pch_iobp_update(SATA_IOBP_SP1G3IR, 0, port_tx);
+		pch_iobp_update(pch, SATA_IOBP_SP1G3IR, 0, port_tx);
 
 	/* Additional Programming Requirements */
 	sir_write(dev, 0x04, 0x00001600);
@@ -199,8 +199,8 @@ static void bd82x6x_sata_init(struct udevice *dev)
 	sir_write(dev, 0xc8, 0x0c0c0c0c);
 	sir_write(dev, 0xd4, 0x10000000);
 
-	pch_iobp_update(0xea004001, 0x3fffffff, 0xc0000000);
-	pch_iobp_update(0xea00408a, 0xfffffcff, 0x00000100);
+	pch_iobp_update(pch, 0xea004001, 0x3fffffff, 0xc0000000);
+	pch_iobp_update(pch, 0xea00408a, 0xfffffcff, 0x00000100);
 }
 
 static void bd82x6x_sata_enable(struct udevice *dev)
@@ -226,10 +226,19 @@ static void bd82x6x_sata_enable(struct udevice *dev)
 
 static int bd82x6x_sata_probe(struct udevice *dev)
 {
+	struct udevice *pch;
+	int ret;
+
+	ret = uclass_first_device(UCLASS_PCH, &pch);
+	if (ret)
+		return ret;
+	if (!pch)
+		return -ENODEV;
+
 	if (!(gd->flags & GD_FLG_RELOC))
 		bd82x6x_sata_enable(dev);
 	else
-		bd82x6x_sata_init(dev);
+		bd82x6x_sata_init(dev, pch);
 
 	return 0;
 }

arch/x86/include/asm/arch-ivybridge/pch.h

@@ -30,11 +30,6 @@
 
 #define SMBUS_IO_BASE		0x0400
 
-int pch_silicon_revision(void);
-int pch_silicon_type(void);
-int pch_silicon_supported(int type, int rev);
-void pch_iobp_update(u32 address, u32 andvalue, u32 orvalue);
-
 #define MAINBOARD_POWER_OFF	0
 #define MAINBOARD_POWER_ON	1
 #define MAINBOARD_POWER_KEEP	2
@@ -470,4 +465,41 @@ void pch_iobp_update(u32 address, u32 andvalue, u32 orvalue);
 #define   DMISCI_STS	(1 << 9)
 #define TCO2_STS	0x66
 
+/**
+ * pch_silicon_revision() - Read silicon revision ID from the PCH
+ *
+ * @dev:	PCH device
+ * @return silicon revision ID
+ */
+int pch_silicon_revision(struct udevice *dev);
+
+/**
+ * pch_silicon_revision() - Read silicon device ID from the PCH
+ *
+ * @dev:	PCH device
+ * @return silicon device ID
+ */
+int pch_silicon_type(struct udevice *dev);
+
+/**
+ * pch_silicon_supported() - Check if a certain revision is supported
+ *
+ * @dev:	PCH device
+ * @type:	PCH type
+ * @rev:	Minimum required resion
+ * @return 0 if not supported, 1 if supported
+ */
+int pch_silicon_supported(struct udevice *dev, int type, int rev);
+
+/**
+ * pch_pch_iobp_update() - Update a pch register
+ *
+ * @dev:	PCH device
+ * @address:	Address to update
+ * @andvalue:	Value to AND with existing value
+ * @orvalue:	Value to OR with existing value
+ */
+void pch_iobp_update(struct udevice *dev, u32 address, u32 andvalue,
+			     u32 orvalue);
+
 #endif