[PATCH v1 13/30] net/i40e/base: allow reading LED blink setting

[Anatoly Burakov <anatoly.burakov@intel.com>]

From: Dawid Łukwiński <dawid.lukwinski@intel.com>

Provide an API to allow reading LED blink setting.

Signed-off-by: Dawid Łukwiński <dawid.lukwinski@intel.com>
Signed-off-by: Anatoly Burakov <anatoly.burakov@intel.com>
---
 drivers/net/i40e/base/i40e_common.c    | 29 ++++++++++++++++++++++++++
 drivers/net/i40e/base/i40e_prototype.h |  1 +
 2 files changed, 30 insertions(+)

diff --git a/drivers/net/i40e/base/i40e_common.c b/drivers/net/i40e/base/i40e_common.c
index 80500697ed..a43b89aaeb 100644
--- a/drivers/net/i40e/base/i40e_common.c
+++ b/drivers/net/i40e/base/i40e_common.c
@@ -1568,6 +1568,35 @@ u32 i40e_led_get(struct i40e_hw *hw)
 	return mode;
 }
 
+/**
+ * i40e_led_get_blink - return current LED blink setting
+ * @hw: pointer to the hw struct
+ *
+ * The value returned is the LED_BLINK bit as defined in the
+ * GPIO register definitions (0 = no blink, 1 = do blink).
+ **/
+bool i40e_led_get_blink(struct i40e_hw *hw)
+{
+	bool blink = 0;
+	int i;
+
+	/* as per the documentation GPIO 22-29 are the LED
+	 * GPIO pins named LED0..LED7
+	 */
+	for (i = I40E_LED0; i <= I40E_GLGEN_GPIO_CTL_MAX_INDEX; i++) {
+		u32 gpio_val = i40e_led_is_mine(hw, i);
+
+		if (!gpio_val)
+			continue;
+
+		blink = (gpio_val & I40E_GLGEN_GPIO_CTL_LED_BLINK_MASK) >>
+			I40E_GLGEN_GPIO_CTL_LED_BLINK_SHIFT;
+		break;
+	}
+
+	return blink;
+}
+
 /**
  * i40e_led_set - set new on/off mode
  * @hw: pointer to the hw struct
diff --git a/drivers/net/i40e/base/i40e_prototype.h b/drivers/net/i40e/base/i40e_prototype.h
index 3fd746a4be..745b9709c5 100644
--- a/drivers/net/i40e/base/i40e_prototype.h
+++ b/drivers/net/i40e/base/i40e_prototype.h
@@ -69,6 +69,7 @@ const char *i40e_aq_str(struct i40e_hw *hw, enum i40e_admin_queue_err aq_err);
 const char *i40e_stat_str(struct i40e_hw *hw, enum i40e_status_code stat_err);
 
 u32 i40e_led_get(struct i40e_hw *hw);
+bool i40e_led_get_blink(struct i40e_hw *hw);
 void i40e_led_set(struct i40e_hw *hw, u32 mode, bool blink);
 enum i40e_status_code i40e_led_set_phy(struct i40e_hw *hw, bool on,
 				       u16 led_addr, u32 mode);
-- 
2.43.5