skylake: prefix the gpio functions with 'gpio_'

In order to provide more clarity on what some of the gpio
functions are doing add a 'gpio_' prefix to the globally
visible functions.

BUG=chrome-os-partner:42982
BRANCH=None
TEST=Built glados.

Change-Id: I4cf48558c1eb9986ed52b160b6564ceaa3cb94b4
Signed-off-by: Patrick Georgi <pgeorgi@google.com>
Original-Commit-Id: f79ef113797884063621fe6cd5cc374c53390ebd
Original-Change-Id: I0d8003efff77b92802e0caf8125046203f315ae4
Original-Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/288192
Original-Reviewed-by: Robbie Zhang <robbie.zhang@intel.com>
Original-Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-on: http://review.coreboot.org/11067
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>

src/soc/intel/skylake/gpio.c

@@ -25,8 +25,8 @@
 #include <soc/pm.h>
 
 /* Keep the ordering intact GPP_A ~ G, GPD.
- * As the gpio/smi functions get_smi_status() and
+ * As the gpio/smi functions gpio_get_smi_status() and
- * enable_gpio_groupsmi() depends on this ordering.
+ * gpio_enable_groupsmi() depends on this ordering.
  */
 static const GPIO_GROUP_INFO gpio_group_info[] = {
 	/* GPP_A */
@@ -245,7 +245,7 @@ void gpio_set(gpio_t gpio_num, int value)
 					 WRITE, &outputvalue);
 }
 
-void clear_all_smi(void)
+void gpio_clear_all_smi(void)
 {
 	u32 gpiogroupinfolength;
 	u32 gpioindex = 0;
@@ -264,7 +264,7 @@ void clear_all_smi(void)
 	}
 }
 
-void get_smi_status(u32 status[GPIO_COMMUNITY_MAX])
+void gpio_get_smi_status(u32 status[GPIO_COMMUNITY_MAX])
 {
 	u32 num_of_communities;
 	u32 gpioindex;
@@ -285,7 +285,7 @@ void get_smi_status(u32 status[GPIO_COMMUNITY_MAX])
 	}
 }
 
-void enable_all_smi(void)
+void gpio_enable_all_smi(void)
 {
 	u32 gpiogroupinfolength;
 	u32 gpioindex = 0;
@@ -304,7 +304,7 @@ void enable_all_smi(void)
 	}
 }
 
-void enable_gpio_groupsmi(gpio_t gpio_num, u32 mask)
+void gpio_enable_groupsmi(gpio_t gpio_num, u32 mask)
 {
 	u32 gpioindex = 0;
 	u32 smien = 0;

src/soc/intel/skylake/include/soc/gpio.h

@@ -23,6 +23,23 @@
 
 #include <stdint.h>
 
+/* SOC has 8 GPIO communities GPP A~G, GPD */
+#define GPIO_COMMUNITY_MAX		8
+
+typedef int gpio_t;
+
+/* Clear GPIO SMI Status */
+void gpio_clear_all_smi(void);
+
+/* Get GPIO SMI Status */
+void gpio_get_smi_status(u32 status[GPIO_COMMUNITY_MAX]);
+
+/* Enable GPIO SMI  */
+void gpio_enable_all_smi(void);
+
+/* Enable GPIO individual Group SMI  */
+void gpio_enable_groupsmi(gpio_t gpio_num, u32 mask);
+
 /*
  * GPP_Ax to GPP_Gx;
  * where x=24 [between GPIO Community A to F]
@@ -123,9 +140,6 @@ typedef struct {
 #define V_PCH_GPIO_GPP_G_PAD_MAX	8
 #define V_PCH_GPIO_GPD_PAD_MAX		12
 
-/* SOC has 8 GPIO communities GPP A~G, GPD */
-#define GPIO_COMMUNITY_MAX		8
-
 #define GPIO_GET_GROUP_INDEX(group)	(group & 0xFF)
 #define GPIO_GET_GROUP_INDEX_FROM_PAD(pad)	(\
 				GPIO_GET_GROUP_INDEX((pad >> 16)))
@@ -295,20 +309,6 @@ typedef enum {
 	GpioResetResume		= 0x7	/* Resume Reset */
 } GPIO_RESET_CONFIG;
 
-typedef int gpio_t;
-
-/* Clear GPIO SMI Status */
-void clear_all_smi(void);
-
-/* Get GPIO SMI Status */
-void get_smi_status(u32 status[GPIO_COMMUNITY_MAX]);
-
-/* Enable GPIO SMI  */
-void enable_all_smi(void);
-
-/* Enable GPIO individual Group SMI  */
-void enable_gpio_groupsmi(gpio_t gpio_num, u32 mask);
-
 /*
  * GPIO Electrical Configuration
  * Set GPIO termination and Pad Tolerance (applicable only for some pads)

src/soc/intel/skylake/pmutil.c

@@ -219,7 +219,7 @@ void disable_smi(u32 mask)
 void reset_alt_smi_status(void)
 {
 	/*Clear GPIO SMI Status*/
-	clear_all_smi();
+	gpio_clear_all_smi();
 }
 
 /* Print GPIO SMI status bits */
@@ -237,7 +237,7 @@ static u32 print_alt_smi_status(void)
 	};
 
 	printk(BIOS_DEBUG, "ALT_STS: ");
-	get_smi_status(alt_sts);
+	gpio_get_smi_status(alt_sts);
 	/* GPP_A to GPP_E GPIO has Status and Enable functionality*/
 	for (gpio_index = 0; gpio_index < ARRAY_SIZE(gpiowell);
 		gpio_index++) {
@@ -262,7 +262,7 @@ u32 clear_alt_smi_status(void)
 void enable_alt_smi(int gpionum, u32 mask)
 {
 	/*Set GPIO EN Status*/
-	enable_gpio_groupsmi(gpionum, mask);
+	gpio_enable_groupsmi(gpionum, mask);
 }