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Diffstat (limited to 'arch/arm/mach-tegra/pinmux.c')
-rw-r--r--arch/arm/mach-tegra/pinmux.c153
1 files changed, 107 insertions, 46 deletions
diff --git a/arch/arm/mach-tegra/pinmux.c b/arch/arm/mach-tegra/pinmux.c
index 1d201650d7a..ac35d2b7685 100644
--- a/arch/arm/mach-tegra/pinmux.c
+++ b/arch/arm/mach-tegra/pinmux.c
@@ -21,6 +21,7 @@
#include <linux/spinlock.h>
#include <linux/io.h>
#include <linux/platform_device.h>
+#include <linux/of_device.h>
#include <mach/iomap.h>
#include <mach/pinmux.h>
@@ -33,8 +34,10 @@
#define SLWR(reg) (((reg) >> 28) & 0x3)
#define SLWF(reg) (((reg) >> 30) & 0x3)
-static const struct tegra_pingroup_desc *const pingroups = tegra_soc_pingroups;
-static const struct tegra_drive_pingroup_desc *const drive_pingroups = tegra_soc_drive_pingroups;
+static const struct tegra_pingroup_desc *pingroups;
+static const struct tegra_drive_pingroup_desc *drive_pingroups;
+static int pingroup_max;
+static int drive_max;
static char *tegra_mux_names[TEGRA_MAX_MUX] = {
[TEGRA_MUX_AHB_CLK] = "AHB_CLK",
@@ -97,6 +100,49 @@ static char *tegra_mux_names[TEGRA_MAX_MUX] = {
[TEGRA_MUX_VI] = "VI",
[TEGRA_MUX_VI_SENSOR_CLK] = "VI_SENSOR_CLK",
[TEGRA_MUX_XIO] = "XIO",
+ [TEGRA_MUX_BLINK] = "BLINK",
+ [TEGRA_MUX_CEC] = "CEC",
+ [TEGRA_MUX_CLK12] = "CLK12",
+ [TEGRA_MUX_DAP] = "DAP",
+ [TEGRA_MUX_DAPSDMMC2] = "DAPSDMMC2",
+ [TEGRA_MUX_DDR] = "DDR",
+ [TEGRA_MUX_DEV3] = "DEV3",
+ [TEGRA_MUX_DTV] = "DTV",
+ [TEGRA_MUX_VI_ALT1] = "VI_ALT1",
+ [TEGRA_MUX_VI_ALT2] = "VI_ALT2",
+ [TEGRA_MUX_VI_ALT3] = "VI_ALT3",
+ [TEGRA_MUX_EMC_DLL] = "EMC_DLL",
+ [TEGRA_MUX_EXTPERIPH1] = "EXTPERIPH1",
+ [TEGRA_MUX_EXTPERIPH2] = "EXTPERIPH2",
+ [TEGRA_MUX_EXTPERIPH3] = "EXTPERIPH3",
+ [TEGRA_MUX_GMI_ALT] = "GMI_ALT",
+ [TEGRA_MUX_HDA] = "HDA",
+ [TEGRA_MUX_HSI] = "HSI",
+ [TEGRA_MUX_I2C4] = "I2C4",
+ [TEGRA_MUX_I2C5] = "I2C5",
+ [TEGRA_MUX_I2CPWR] = "I2CPWR",
+ [TEGRA_MUX_I2S0] = "I2S0",
+ [TEGRA_MUX_I2S1] = "I2S1",
+ [TEGRA_MUX_I2S2] = "I2S2",
+ [TEGRA_MUX_I2S3] = "I2S3",
+ [TEGRA_MUX_I2S4] = "I2S4",
+ [TEGRA_MUX_NAND_ALT] = "NAND_ALT",
+ [TEGRA_MUX_POPSDIO4] = "POPSDIO4",
+ [TEGRA_MUX_POPSDMMC4] = "POPSDMMC4",
+ [TEGRA_MUX_PWM0] = "PWM0",
+ [TEGRA_MUX_PWM1] = "PWM2",
+ [TEGRA_MUX_PWM2] = "PWM2",
+ [TEGRA_MUX_PWM3] = "PWM3",
+ [TEGRA_MUX_SATA] = "SATA",
+ [TEGRA_MUX_SPI5] = "SPI5",
+ [TEGRA_MUX_SPI6] = "SPI6",
+ [TEGRA_MUX_SYSCLK] = "SYSCLK",
+ [TEGRA_MUX_VGP1] = "VGP1",
+ [TEGRA_MUX_VGP2] = "VGP2",
+ [TEGRA_MUX_VGP3] = "VGP3",
+ [TEGRA_MUX_VGP4] = "VGP4",
+ [TEGRA_MUX_VGP5] = "VGP5",
+ [TEGRA_MUX_VGP6] = "VGP6",
[TEGRA_MUX_SAFE] = "<safe>",
};
@@ -116,9 +162,9 @@ static const char *tegra_slew_names[TEGRA_MAX_SLEW] = {
static DEFINE_SPINLOCK(mux_lock);
-static const char *pingroup_name(enum tegra_pingroup pg)
+static const char *pingroup_name(int pg)
{
- if (pg < 0 || pg >= TEGRA_MAX_PINGROUP)
+ if (pg < 0 || pg >= pingroup_max)
return "<UNKNOWN>";
return pingroups[pg].name;
@@ -189,10 +235,10 @@ static int tegra_pinmux_set_func(const struct tegra_pingroup_config *config)
int i;
unsigned long reg;
unsigned long flags;
- enum tegra_pingroup pg = config->pingroup;
+ int pg = config->pingroup;
enum tegra_mux_func func = config->func;
- if (pg < 0 || pg >= TEGRA_MAX_PINGROUP)
+ if (pg < 0 || pg >= pingroup_max)
return -ERANGE;
if (pingroups[pg].mux_reg < 0)
@@ -230,13 +276,12 @@ static int tegra_pinmux_set_func(const struct tegra_pingroup_config *config)
return 0;
}
-int tegra_pinmux_set_tristate(enum tegra_pingroup pg,
- enum tegra_tristate tristate)
+int tegra_pinmux_set_tristate(int pg, enum tegra_tristate tristate)
{
unsigned long reg;
unsigned long flags;
- if (pg < 0 || pg >= TEGRA_MAX_PINGROUP)
+ if (pg < 0 || pg >= pingroup_max)
return -ERANGE;
if (pingroups[pg].tri_reg < 0)
@@ -255,13 +300,12 @@ int tegra_pinmux_set_tristate(enum tegra_pingroup pg,
return 0;
}
-int tegra_pinmux_set_pullupdown(enum tegra_pingroup pg,
- enum tegra_pullupdown pupd)
+int tegra_pinmux_set_pullupdown(int pg, enum tegra_pullupdown pupd)
{
unsigned long reg;
unsigned long flags;
- if (pg < 0 || pg >= TEGRA_MAX_PINGROUP)
+ if (pg < 0 || pg >= pingroup_max)
return -ERANGE;
if (pingroups[pg].pupd_reg < 0)
@@ -287,7 +331,7 @@ int tegra_pinmux_set_pullupdown(enum tegra_pingroup pg,
static void tegra_pinmux_config_pingroup(const struct tegra_pingroup_config *config)
{
- enum tegra_pingroup pingroup = config->pingroup;
+ int pingroup = config->pingroup;
enum tegra_mux_func func = config->func;
enum tegra_pullupdown pupd = config->pupd;
enum tegra_tristate tristate = config->tristate;
@@ -323,9 +367,9 @@ void tegra_pinmux_config_table(const struct tegra_pingroup_config *config, int l
tegra_pinmux_config_pingroup(&config[i]);
}
-static const char *drive_pinmux_name(enum tegra_drive_pingroup pg)
+static const char *drive_pinmux_name(int pg)
{
- if (pg < 0 || pg >= TEGRA_MAX_DRIVE_PINGROUP)
+ if (pg < 0 || pg >= drive_max)
return "<UNKNOWN>";
return drive_pingroups[pg].name;
@@ -352,12 +396,11 @@ static const char *slew_name(unsigned long val)
return tegra_slew_names[val];
}
-static int tegra_drive_pinmux_set_hsm(enum tegra_drive_pingroup pg,
- enum tegra_hsm hsm)
+static int tegra_drive_pinmux_set_hsm(int pg, enum tegra_hsm hsm)
{
unsigned long flags;
u32 reg;
- if (pg < 0 || pg >= TEGRA_MAX_DRIVE_PINGROUP)
+ if (pg < 0 || pg >= drive_max)
return -ERANGE;
if (hsm != TEGRA_HSM_ENABLE && hsm != TEGRA_HSM_DISABLE)
@@ -377,12 +420,11 @@ static int tegra_drive_pinmux_set_hsm(enum tegra_drive_pingroup pg,
return 0;
}
-static int tegra_drive_pinmux_set_schmitt(enum tegra_drive_pingroup pg,
- enum tegra_schmitt schmitt)
+static int tegra_drive_pinmux_set_schmitt(int pg, enum tegra_schmitt schmitt)
{
unsigned long flags;
u32 reg;
- if (pg < 0 || pg >= TEGRA_MAX_DRIVE_PINGROUP)
+ if (pg < 0 || pg >= drive_max)
return -ERANGE;
if (schmitt != TEGRA_SCHMITT_ENABLE && schmitt != TEGRA_SCHMITT_DISABLE)
@@ -402,12 +444,11 @@ static int tegra_drive_pinmux_set_schmitt(enum tegra_drive_pingroup pg,
return 0;
}
-static int tegra_drive_pinmux_set_drive(enum tegra_drive_pingroup pg,
- enum tegra_drive drive)
+static int tegra_drive_pinmux_set_drive(int pg, enum tegra_drive drive)
{
unsigned long flags;
u32 reg;
- if (pg < 0 || pg >= TEGRA_MAX_DRIVE_PINGROUP)
+ if (pg < 0 || pg >= drive_max)
return -ERANGE;
if (drive < 0 || drive >= TEGRA_MAX_DRIVE)
@@ -425,12 +466,12 @@ static int tegra_drive_pinmux_set_drive(enum tegra_drive_pingroup pg,
return 0;
}
-static int tegra_drive_pinmux_set_pull_down(enum tegra_drive_pingroup pg,
+static int tegra_drive_pinmux_set_pull_down(int pg,
enum tegra_pull_strength pull_down)
{
unsigned long flags;
u32 reg;
- if (pg < 0 || pg >= TEGRA_MAX_DRIVE_PINGROUP)
+ if (pg < 0 || pg >= drive_max)
return -ERANGE;
if (pull_down < 0 || pull_down >= TEGRA_MAX_PULL)
@@ -448,12 +489,12 @@ static int tegra_drive_pinmux_set_pull_down(enum tegra_drive_pingroup pg,
return 0;
}
-static int tegra_drive_pinmux_set_pull_up(enum tegra_drive_pingroup pg,
+static int tegra_drive_pinmux_set_pull_up(int pg,
enum tegra_pull_strength pull_up)
{
unsigned long flags;
u32 reg;
- if (pg < 0 || pg >= TEGRA_MAX_DRIVE_PINGROUP)
+ if (pg < 0 || pg >= drive_max)
return -ERANGE;
if (pull_up < 0 || pull_up >= TEGRA_MAX_PULL)
@@ -471,12 +512,12 @@ static int tegra_drive_pinmux_set_pull_up(enum tegra_drive_pingroup pg,
return 0;
}
-static int tegra_drive_pinmux_set_slew_rising(enum tegra_drive_pingroup pg,
+static int tegra_drive_pinmux_set_slew_rising(int pg,
enum tegra_slew slew_rising)
{
unsigned long flags;
u32 reg;
- if (pg < 0 || pg >= TEGRA_MAX_DRIVE_PINGROUP)
+ if (pg < 0 || pg >= drive_max)
return -ERANGE;
if (slew_rising < 0 || slew_rising >= TEGRA_MAX_SLEW)
@@ -494,12 +535,12 @@ static int tegra_drive_pinmux_set_slew_rising(enum tegra_drive_pingroup pg,
return 0;
}
-static int tegra_drive_pinmux_set_slew_falling(enum tegra_drive_pingroup pg,
+static int tegra_drive_pinmux_set_slew_falling(int pg,
enum tegra_slew slew_falling)
{
unsigned long flags;
u32 reg;
- if (pg < 0 || pg >= TEGRA_MAX_DRIVE_PINGROUP)
+ if (pg < 0 || pg >= drive_max)
return -ERANGE;
if (slew_falling < 0 || slew_falling >= TEGRA_MAX_SLEW)
@@ -517,7 +558,7 @@ static int tegra_drive_pinmux_set_slew_falling(enum tegra_drive_pingroup pg,
return 0;
}
-static void tegra_drive_pinmux_config_pingroup(enum tegra_drive_pingroup pingroup,
+static void tegra_drive_pinmux_config_pingroup(int pingroup,
enum tegra_hsm hsm,
enum tegra_schmitt schmitt,
enum tegra_drive drive,
@@ -596,7 +637,7 @@ void tegra_pinmux_set_safe_pinmux_table(const struct tegra_pingroup_config *conf
for (i = 0; i < len; i++) {
int err;
c = config[i];
- if (c.pingroup < 0 || c.pingroup >= TEGRA_MAX_PINGROUP) {
+ if (c.pingroup < 0 || c.pingroup >= pingroup_max) {
WARN_ON(1);
continue;
}
@@ -617,7 +658,7 @@ void tegra_pinmux_config_pinmux_table(const struct tegra_pingroup_config *config
for (i = 0; i < len; i++) {
int err;
if (config[i].pingroup < 0 ||
- config[i].pingroup >= TEGRA_MAX_PINGROUP) {
+ config[i].pingroup >= pingroup_max) {
WARN_ON(1);
continue;
}
@@ -635,7 +676,7 @@ void tegra_pinmux_config_tristate_table(const struct tegra_pingroup_config *conf
{
int i;
int err;
- enum tegra_pingroup pingroup;
+ int pingroup;
for (i = 0; i < len; i++) {
pingroup = config[i].pingroup;
@@ -654,7 +695,7 @@ void tegra_pinmux_config_pullupdown_table(const struct tegra_pingroup_config *co
{
int i;
int err;
- enum tegra_pingroup pingroup;
+ int pingroup;
for (i = 0; i < len; i++) {
pingroup = config[i].pingroup;
@@ -668,11 +709,36 @@ void tegra_pinmux_config_pullupdown_table(const struct tegra_pingroup_config *co
}
}
+static struct of_device_id tegra_pinmux_of_match[] __devinitdata = {
+#ifdef CONFIG_ARCH_TEGRA_2x_SOC
+ { .compatible = "nvidia,tegra20-pinmux", tegra20_pinmux_init },
+#endif
+#ifdef CONFIG_ARCH_TEGRA_3x_SOC
+ { .compatible = "nvidia,tegra30-pinmux", tegra30_pinmux_init },
+#endif
+ { },
+};
+
static int __devinit tegra_pinmux_probe(struct platform_device *pdev)
{
struct resource *res;
int i;
int config_bad = 0;
+ const struct of_device_id *match;
+
+ match = of_match_device(tegra_pinmux_of_match, &pdev->dev);
+
+ if (match)
+ ((pinmux_init)(match->data))(&pingroups, &pingroup_max,
+ &drive_pingroups, &drive_max);
+#ifdef CONFIG_ARCH_TEGRA_2x_SOC
+ else
+ /* no device tree available, so we must be on tegra20 */
+ tegra20_pinmux_init(&pingroups, &pingroup_max,
+ &drive_pingroups, &drive_max);
+#else
+ pr_warn("non Tegra20 platform requires pinmux devicetree node\n");
+#endif
for (i = 0; ; i++) {
res = platform_get_resource(pdev, IORESOURCE_MEM, i);
@@ -681,7 +747,7 @@ static int __devinit tegra_pinmux_probe(struct platform_device *pdev)
}
nbanks = i;
- for (i = 0; i < TEGRA_MAX_PINGROUP; i++) {
+ for (i = 0; i < pingroup_max; i++) {
if (pingroups[i].tri_bank >= nbanks) {
dev_err(&pdev->dev, "pingroup %d: bad tri_bank\n", i);
config_bad = 1;
@@ -698,7 +764,7 @@ static int __devinit tegra_pinmux_probe(struct platform_device *pdev)
}
}
- for (i = 0; i < TEGRA_MAX_DRIVE_PINGROUP; i++) {
+ for (i = 0; i < drive_max; i++) {
if (drive_pingroups[i].reg_bank >= nbanks) {
dev_err(&pdev->dev,
"drive pingroup %d: bad reg_bank\n", i);
@@ -741,11 +807,6 @@ static int __devinit tegra_pinmux_probe(struct platform_device *pdev)
return 0;
}
-static struct of_device_id tegra_pinmux_of_match[] __devinitdata = {
- { .compatible = "nvidia,tegra20-pinmux", },
- { },
-};
-
static struct platform_driver tegra_pinmux_driver = {
.driver = {
.name = "tegra-pinmux",
@@ -779,7 +840,7 @@ static int dbg_pinmux_show(struct seq_file *s, void *unused)
int i;
int len;
- for (i = 0; i < TEGRA_MAX_PINGROUP; i++) {
+ for (i = 0; i < pingroup_max; i++) {
unsigned long reg;
unsigned long tri;
unsigned long mux;
@@ -850,7 +911,7 @@ static int dbg_drive_pinmux_show(struct seq_file *s, void *unused)
int i;
int len;
- for (i = 0; i < TEGRA_MAX_DRIVE_PINGROUP; i++) {
+ for (i = 0; i < drive_max; i++) {
u32 reg;
seq_printf(s, "\t{TEGRA_DRIVE_PINGROUP_%s",