[U-Boot] [PATCH V2 5/7] ARM: tegra: switch Tegra210 to common XUSB padctl
Stephen Warren
swarren at wwwdotorg.org
Fri Oct 23 18:50:51 CEST 2015
From: Stephen Warren <swarren at nvidia.com>
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 at nvidia.com>
---
arch/arm/mach-tegra/tegra210/Makefile | 1 +
arch/arm/mach-tegra/tegra210/xusb-padctl.c | 173 +++--------------------------
2 files changed, 16 insertions(+), 158 deletions(-)
diff --git a/arch/arm/mach-tegra/tegra210/Makefile b/arch/arm/mach-tegra/tegra210/Makefile
index 1fb8d1ac7483..b6012fc7baac 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 3c10a96aa396..503354344067 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__);
--
1.9.1
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