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-rw-r--r--arch/arm/plat-nomadik/gpio.c50
-rw-r--r--arch/arm/plat-nomadik/include/plat/pincfg.h70
2 files changed, 99 insertions, 21 deletions
diff --git a/arch/arm/plat-nomadik/gpio.c b/arch/arm/plat-nomadik/gpio.c
index 85e6fd212a41..5fc8e4d8cd2a 100644
--- a/arch/arm/plat-nomadik/gpio.c
+++ b/arch/arm/plat-nomadik/gpio.c
@@ -119,7 +119,7 @@ static void __nmk_gpio_make_output(struct nmk_gpio_chip *nmk_chip,
}
static void __nmk_config_pin(struct nmk_gpio_chip *nmk_chip, unsigned offset,
- pin_cfg_t cfg)
+ pin_cfg_t cfg, bool sleep)
{
static const char *afnames[] = {
[NMK_GPIO_ALT_GPIO] = "GPIO",
@@ -145,11 +145,34 @@ static void __nmk_config_pin(struct nmk_gpio_chip *nmk_chip, unsigned offset,
int output = PIN_DIR(cfg);
int val = PIN_VAL(cfg);
- dev_dbg(nmk_chip->chip.dev, "pin %d: af %s, pull %s, slpm %s (%s%s)\n",
- pin, afnames[af], pullnames[pull], slpmnames[slpm],
+ dev_dbg(nmk_chip->chip.dev, "pin %d [%#lx]: af %s, pull %s, slpm %s (%s%s)\n",
+ pin, cfg, afnames[af], pullnames[pull], slpmnames[slpm],
output ? "output " : "input",
output ? (val ? "high" : "low") : "");
+ if (sleep) {
+ int slpm_pull = PIN_SLPM_PULL(cfg);
+ int slpm_output = PIN_SLPM_DIR(cfg);
+ int slpm_val = PIN_SLPM_VAL(cfg);
+
+ /*
+ * The SLPM_* values are normal values + 1 to allow zero to
+ * mean "same as normal".
+ */
+ if (slpm_pull)
+ pull = slpm_pull - 1;
+ if (slpm_output)
+ output = slpm_output - 1;
+ if (slpm_val)
+ val = slpm_val - 1;
+
+ dev_dbg(nmk_chip->chip.dev, "pin %d: sleep pull %s, dir %s, val %s\n",
+ pin,
+ slpm_pull ? pullnames[pull] : "same",
+ slpm_output ? (output ? "output" : "input") : "same",
+ slpm_val ? (val ? "high" : "low") : "same");
+ }
+
if (output)
__nmk_gpio_make_output(nmk_chip, offset, val);
else {
@@ -175,7 +198,7 @@ static void __nmk_config_pin(struct nmk_gpio_chip *nmk_chip, unsigned offset,
* side-effects. The gpio can be manipulated later using standard GPIO API
* calls.
*/
-int nmk_config_pin(pin_cfg_t cfg)
+int nmk_config_pin(pin_cfg_t cfg, bool sleep)
{
struct nmk_gpio_chip *nmk_chip;
int gpio = PIN_NUM(cfg);
@@ -186,7 +209,7 @@ int nmk_config_pin(pin_cfg_t cfg)
return -EINVAL;
spin_lock_irqsave(&nmk_chip->lock, flags);
- __nmk_config_pin(nmk_chip, gpio - nmk_chip->chip.base, cfg);
+ __nmk_config_pin(nmk_chip, gpio - nmk_chip->chip.base, cfg, sleep);
spin_unlock_irqrestore(&nmk_chip->lock, flags);
return 0;
@@ -207,7 +230,7 @@ int nmk_config_pins(pin_cfg_t *cfgs, int num)
int i;
for (i = 0; i < num; i++) {
- int ret = nmk_config_pin(cfgs[i]);
+ ret = nmk_config_pin(cfgs[i], false);
if (ret)
break;
}
@@ -216,6 +239,21 @@ int nmk_config_pins(pin_cfg_t *cfgs, int num)
}
EXPORT_SYMBOL(nmk_config_pins);
+int nmk_config_pins_sleep(pin_cfg_t *cfgs, int num)
+{
+ int ret = 0;
+ int i;
+
+ for (i = 0; i < num; i++) {
+ ret = nmk_config_pin(cfgs[i], true);
+ if (ret)
+ break;
+ }
+
+ return ret;
+}
+EXPORT_SYMBOL(nmk_config_pins_sleep);
+
/**
* nmk_gpio_set_slpm() - configure the sleep mode of a pin
* @gpio: pin number
diff --git a/arch/arm/plat-nomadik/include/plat/pincfg.h b/arch/arm/plat-nomadik/include/plat/pincfg.h
index 8c5ae3f2acf8..05a3936ae6d1 100644
--- a/arch/arm/plat-nomadik/include/plat/pincfg.h
+++ b/arch/arm/plat-nomadik/include/plat/pincfg.h
@@ -19,16 +19,22 @@
* bit 9..10 - Alternate Function Selection
* bit 11..12 - Pull up/down state
* bit 13 - Sleep mode behaviour
- * bit 14 - (sleep mode) Direction
- * bit 15 - (sleep mode) Value (if output)
+ * bit 14 - Direction
+ * bit 15 - Value (if output)
+ * bit 16..18 - SLPM pull up/down state
+ * bit 19..20 - SLPM direction
+ * bit 21..22 - SLPM Value (if output)
*
* to facilitate the definition, the following macros are provided
*
* PIN_CFG_DEFAULT - default config (0):
* pull up/down = disabled
* sleep mode = input/wakeup
- * (sleep mode) direction = input
- * (sleep mode) value = low
+ * direction = input
+ * value = low
+ * SLPM direction = same as normal
+ * SLPM pull = same as normal
+ * SLPM value = same as normal
*
* PIN_CFG - default config with alternate function
* PIN_CFG_PULL - default config with alternate function and pull up/down
@@ -75,30 +81,64 @@ typedef unsigned long pin_cfg_t;
#define PIN_VAL_LOW (0 << PIN_VAL_SHIFT)
#define PIN_VAL_HIGH (1 << PIN_VAL_SHIFT)
-/* Shortcuts. Use these instead of separate DIR and VAL. */
-#define PIN_INPUT PIN_DIR_INPUT
+#define PIN_SLPM_PULL_SHIFT 16
+#define PIN_SLPM_PULL_MASK (0x7 << PIN_SLPM_PULL_SHIFT)
+#define PIN_SLPM_PULL(x) \
+ (((x) & PIN_SLPM_PULL_MASK) >> PIN_SLPM_PULL_SHIFT)
+#define PIN_SLPM_PULL_NONE \
+ ((1 + NMK_GPIO_PULL_NONE) << PIN_SLPM_PULL_SHIFT)
+#define PIN_SLPM_PULL_UP \
+ ((1 + NMK_GPIO_PULL_UP) << PIN_SLPM_PULL_SHIFT)
+#define PIN_SLPM_PULL_DOWN \
+ ((1 + NMK_GPIO_PULL_DOWN) << PIN_SLPM_PULL_SHIFT)
+
+#define PIN_SLPM_DIR_SHIFT 19
+#define PIN_SLPM_DIR_MASK (0x3 << PIN_SLPM_DIR_SHIFT)
+#define PIN_SLPM_DIR(x) \
+ (((x) & PIN_SLPM_DIR_MASK) >> PIN_SLPM_DIR_SHIFT)
+#define PIN_SLPM_DIR_INPUT ((1 + 0) << PIN_SLPM_DIR_SHIFT)
+#define PIN_SLPM_DIR_OUTPUT ((1 + 1) << PIN_SLPM_DIR_SHIFT)
+
+#define PIN_SLPM_VAL_SHIFT 21
+#define PIN_SLPM_VAL_MASK (0x3 << PIN_SLPM_VAL_SHIFT)
+#define PIN_SLPM_VAL(x) \
+ (((x) & PIN_SLPM_VAL_MASK) >> PIN_SLPM_VAL_SHIFT)
+#define PIN_SLPM_VAL_LOW ((1 + 0) << PIN_SLPM_VAL_SHIFT)
+#define PIN_SLPM_VAL_HIGH ((1 + 1) << PIN_SLPM_VAL_SHIFT)
+
+/* Shortcuts. Use these instead of separate DIR, PULL, and VAL. */
+#define PIN_INPUT_PULLDOWN (PIN_DIR_INPUT | PIN_PULL_DOWN)
+#define PIN_INPUT_PULLUP (PIN_DIR_INPUT | PIN_PULL_UP)
+#define PIN_INPUT_NOPULL (PIN_DIR_INPUT | PIN_PULL_NONE)
#define PIN_OUTPUT_LOW (PIN_DIR_OUTPUT | PIN_VAL_LOW)
#define PIN_OUTPUT_HIGH (PIN_DIR_OUTPUT | PIN_VAL_HIGH)
-/*
- * These are the same as the ones above, but should make more sense to the
- * reader when seen along with a setting a pin to AF mode.
- */
-#define PIN_SLPM_INPUT PIN_INPUT
-#define PIN_SLPM_OUTPUT_LOW PIN_OUTPUT_LOW
-#define PIN_SLPM_OUTPUT_HIGH PIN_OUTPUT_HIGH
+#define PIN_SLPM_INPUT_PULLDOWN (PIN_SLPM_DIR_INPUT | PIN_SLPM_PULL_DOWN)
+#define PIN_SLPM_INPUT_PULLUP (PIN_SLPM_DIR_INPUT | PIN_SLPM_PULL_UP)
+#define PIN_SLPM_INPUT_NOPULL (PIN_SLPM_DIR_INPUT | PIN_SLPM_PULL_NONE)
+#define PIN_SLPM_OUTPUT_LOW (PIN_SLPM_DIR_OUTPUT | PIN_SLPM_VAL_LOW)
+#define PIN_SLPM_OUTPUT_HIGH (PIN_SLPM_DIR_OUTPUT | PIN_SLPM_VAL_HIGH)
-#define PIN_CFG_DEFAULT (PIN_PULL_NONE | PIN_SLPM_INPUT)
+#define PIN_CFG_DEFAULT (0)
#define PIN_CFG(num, alt) \
(PIN_CFG_DEFAULT |\
(PIN_NUM(num) | PIN_##alt))
+#define PIN_CFG_INPUT(num, alt, pull) \
+ (PIN_CFG_DEFAULT |\
+ (PIN_NUM(num) | PIN_##alt | PIN_INPUT_##pull))
+
+#define PIN_CFG_OUTPUT(num, alt, val) \
+ (PIN_CFG_DEFAULT |\
+ (PIN_NUM(num) | PIN_##alt | PIN_OUTPUT_##val))
+
#define PIN_CFG_PULL(num, alt, pull) \
((PIN_CFG_DEFAULT & ~PIN_PULL_MASK) |\
(PIN_NUM(num) | PIN_##alt | PIN_PULL_##pull))
-extern int nmk_config_pin(pin_cfg_t cfg);
+extern int nmk_config_pin(pin_cfg_t cfg, bool sleep);
extern int nmk_config_pins(pin_cfg_t *cfgs, int num);
+extern int nmk_config_pins_sleep(pin_cfg_t *cfgs, int num);
#endif
generated by cgit v1.2.3-58-ga151 (git 2.39.0) at 2024-12-11 11:54:15 +0000