ARM: tegra: switch Tegra210 to common XUSB padctl

This change simply deletes code from the Tegra210 XUSB padctl driver that
is already present in the common XUSB padctl code. Since all the arrays
in tegra210_socdata are empty, this update may leave the Tegra210 XUSB
padctl driver non-functional at run-time. However, (a) this driver is not
used yet so no regression can be observed and (b) the next commit will
immediately fix this up.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Warren <twarren@nvidia.com>

2 files changed, 16 insertions, 158 deletions

diff --git a/arch/arm/mach-tegra/tegra210/Makefile b/arch/arm/mach-tegra/tegra210/Makefile
index 1fb8d1ac74..b6012fc7ba 100644
--- a/arch/arm/mach-tegra/tegra210/Makefile
+++ b/arch/arm/mach-tegra/tegra210/Makefile
@@ -9,3 +9,4 @@ obj-y	+= clock.o
 obj-y	+= funcmux.o
 obj-y	+= pinmux.o
 obj-y	+= xusb-padctl.o
+obj-y	+= ../xusb-padctl-common.o
diff --git a/arch/arm/mach-tegra/tegra210/xusb-padctl.c b/arch/arm/mach-tegra/tegra210/xusb-padctl.c
index 3c10a96aa3..5033543440 100644
--- a/arch/arm/mach-tegra/tegra210/xusb-padctl.c
+++ b/arch/arm/mach-tegra/tegra210/xusb-padctl.c
@@ -8,52 +8,13 @@
 
 #include <common.h>
 #include <errno.h>
-#include <fdtdec.h>
-#include <malloc.h>
 
-#include <asm/io.h>
+#include "../xusb-padctl-common.h"
 
 #include <asm/arch/clock.h>
-#include <asm/arch-tegra/xusb-padctl.h>
 
 #include <dt-bindings/pinctrl/pinctrl-tegra-xusb.h>
 
-struct tegra_xusb_phy_ops {
-	int (*prepare)(struct tegra_xusb_phy *phy);
-	int (*enable)(struct tegra_xusb_phy *phy);
-	int (*disable)(struct tegra_xusb_phy *phy);
-	int (*unprepare)(struct tegra_xusb_phy *phy);
-};
-
-struct tegra_xusb_phy {
-	const struct tegra_xusb_phy_ops *ops;
-
-	struct tegra_xusb_padctl *padctl;
-};
-
-struct tegra_xusb_padctl {
-	struct fdt_resource regs;
-
-	unsigned int enable;
-
-	struct tegra_xusb_phy phys[2];
-};
-
-static inline u32 padctl_readl(struct tegra_xusb_padctl *padctl,
-			       unsigned long offset)
-{
-	u32 value = readl(padctl->regs.start + offset);
-	debug("padctl: %08lx > %08x\n", offset, value);
-	return value;
-}
-
-static inline void padctl_writel(struct tegra_xusb_padctl *padctl,
-				 u32 value, unsigned long offset)
-{
-	debug("padctl: %08lx < %08x\n", offset, value);
-	writel(value, padctl->regs.start + offset);
-}
-
 #define XUSB_PADCTL_ELPG_PROGRAM 0x024
 #define  XUSB_PADCTL_ELPG_PROGRAM_AUX_MUX_LP0_VCORE_DOWN (1 << 31)
 #define  XUSB_PADCTL_ELPG_PROGRAM_AUX_MUX_LP0_CLAMP_EN_EARLY (1 << 30)
@@ -358,120 +319,22 @@ static const struct tegra_xusb_phy_ops pcie_phy_ops = {
 	.unprepare = phy_unprepare,
 };
 
-static struct tegra_xusb_padctl *padctl = &(struct tegra_xusb_padctl) {
-	.phys = {
-		[0] = {
-			.ops = &pcie_phy_ops,
-		},
+static struct tegra_xusb_phy tegra210_phys[] = {
+	{
+		.type = TEGRA_XUSB_PADCTL_PCIE,
+		.ops = &pcie_phy_ops,
+		.padctl = &padctl,
 	},
 };
 
-static int tegra_xusb_padctl_parse_dt(struct tegra_xusb_padctl *padctl,
-				      const void *fdt, int node)
-{
-	int err;
-
-	err = fdt_get_resource(fdt, node, "reg", 0, &padctl->regs);
-	if (err < 0) {
-		error("registers not found");
-		return err;
-	}
-
-	debug("regs: %pa-%pa\n", &padctl->regs.start,
-	      &padctl->regs.end);
-
-	return 0;
-}
-
-static int process_nodes(const void *fdt, int nodes[], unsigned int count)
-{
-	unsigned int i;
-	int err;
-
-	debug("> %s(fdt=%p, nodes=%p, count=%u)\n", __func__, fdt, nodes,
-	      count);
-
-	for (i = 0; i < count; i++) {
-		enum fdt_compat_id id;
-
-		if (!fdtdec_get_is_enabled(fdt, nodes[i]))
-			continue;
-
-		id = fdtdec_lookup(fdt, nodes[i]);
-		switch (id) {
-		case COMPAT_NVIDIA_TEGRA124_XUSB_PADCTL:
-		case COMPAT_NVIDIA_TEGRA210_XUSB_PADCTL:
-			break;
-
-		default:
-			error("unsupported compatible: %s",
-			      fdtdec_get_compatible(id));
-			continue;
-		}
-
-		err = tegra_xusb_padctl_parse_dt(padctl, fdt, nodes[i]);
-		if (err < 0) {
-			error("failed to parse DT: %d",
-			      err);
-			continue;
-		}
-
-		/* deassert XUSB padctl reset */
-		reset_set_enable(PERIPH_ID_XUSB_PADCTL, 0);
-
-		/* only a single instance is supported */
-		break;
-	}
-
-	debug("< %s()\n", __func__);
-	return 0;
-}
-
-struct tegra_xusb_phy *tegra_xusb_phy_get(unsigned int type)
-{
-	struct tegra_xusb_phy *phy = NULL;
-
-	switch (type) {
-	case TEGRA_XUSB_PADCTL_PCIE:
-		phy = &padctl->phys[0];
-		phy->padctl = padctl;
-		break;
-	}
-
-	return phy;
-}
-
-int tegra_xusb_phy_prepare(struct tegra_xusb_phy *phy)
-{
-	if (phy && phy->ops && phy->ops->prepare)
-		return phy->ops->prepare(phy);
-
-	return phy ? -ENOSYS : -EINVAL;
-}
-
-int tegra_xusb_phy_enable(struct tegra_xusb_phy *phy)
-{
-	if (phy && phy->ops && phy->ops->enable)
-		return phy->ops->enable(phy);
-
-	return phy ? -ENOSYS : -EINVAL;
-}
-
-int tegra_xusb_phy_disable(struct tegra_xusb_phy *phy)
-{
-	if (phy && phy->ops && phy->ops->disable)
-		return phy->ops->disable(phy);
-
-	return phy ? -ENOSYS : -EINVAL;
-}
-
-int tegra_xusb_phy_unprepare(struct tegra_xusb_phy *phy)
-{
-	if (phy && phy->ops && phy->ops->unprepare)
-		return phy->ops->unprepare(phy);
-
-	return phy ? -ENOSYS : -EINVAL;
-}
+static const struct tegra_xusb_padctl_soc tegra210_socdata = {
+	.lanes = NULL,
+	.num_lanes = 0,
+	.functions = NULL,
+	.num_functions = 0,
+	.phys = tegra210_phys,
+	.num_phys = ARRAY_SIZE(tegra210_phys),
+};
 
 void tegra_xusb_padctl_init(const void *fdt)
 {
@@ -482,13 +345,7 @@ void tegra_xusb_padctl_init(const void *fdt)
 	count = fdtdec_find_aliases_for_id(fdt, "padctl",
 					   COMPAT_NVIDIA_TEGRA210_XUSB_PADCTL,
 					   nodes, ARRAY_SIZE(nodes));
-	if (process_nodes(fdt, nodes, count))
-		return;
-
-	count = fdtdec_find_aliases_for_id(fdt, "padctl",
-					   COMPAT_NVIDIA_TEGRA124_XUSB_PADCTL,
-					   nodes, ARRAY_SIZE(nodes));
-	if (process_nodes(fdt, nodes, count))
+	if (tegra_xusb_process_nodes(fdt, nodes, count, &tegra210_socdata))
 		return;
 
 	debug("< %s()\n", __func__);