From cb68c4daaf002397d626a3cb541f931022b4386a Mon Sep 17 00:00:00 2001
From: Peter Ujfalusi <peter.ujfalusi@ti.com>
Date: Mon, 4 Jul 2011 10:28:28 +0300
Subject: [PATCH] --- yaml --- r: 260703 b: refs/heads/master c:
 cfb7a33bea259d2d72a64adcb3de28532170dc25 h: refs/heads/master i:   260701:
 9f4b5410d624c1abcb39134dbad361379357de81   260699:
 33f769596aed68548dadc488dc3ce0ca8e9d81cb   260695:
 5064553a209de29e51268e5b0a9584553964e87a   260687:
 6a96edaf96d8999c7090ae35f5d70589638fb468   260671:
 578357a6693f220624b2c481aae09ec638be50f7 v: v3

---
 [refs]                            |  2 +-
 trunk/drivers/mfd/twl6040-core.c  | 26 +++++++++++++-------------
 trunk/include/linux/mfd/twl6040.h | 17 ++++++-----------
 3 files changed, 20 insertions(+), 25 deletions(-)

diff --git a/[refs] b/[refs]
index 1cf80dd1c6be..4129e2da8ef2 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 753621c2155bd49bff7d5d3844b3ddc203e44a06
+refs/heads/master: cfb7a33bea259d2d72a64adcb3de28532170dc25
diff --git a/trunk/drivers/mfd/twl6040-core.c b/trunk/drivers/mfd/twl6040-core.c
index 6843977f4e87..24d436c2fe4a 100644
--- a/trunk/drivers/mfd/twl6040-core.c
+++ b/trunk/drivers/mfd/twl6040-core.c
@@ -270,7 +270,8 @@ int twl6040_power(struct twl6040 *twl6040, int on)
 				goto out;
 			}
 		}
-		twl6040->pll = TWL6040_LPPLL_ID;
+		/* Default PLL configuration after power up */
+		twl6040->pll = TWL6040_SYSCLK_SEL_LPPLL;
 		twl6040->sysclk = 19200000;
 	} else {
 		/* already powered-down */
@@ -294,7 +295,6 @@ int twl6040_power(struct twl6040 *twl6040, int on)
 			/* use manual power-down sequence */
 			twl6040_power_down(twl6040);
 		}
-		twl6040->pll = TWL6040_NOPLL_ID;
 		twl6040->sysclk = 0;
 	}
 
@@ -304,7 +304,7 @@ int twl6040_power(struct twl6040 *twl6040, int on)
 }
 EXPORT_SYMBOL(twl6040_power);
 
-int twl6040_set_pll(struct twl6040 *twl6040, enum twl6040_pll_id id,
+int twl6040_set_pll(struct twl6040 *twl6040, int pll_id,
 		    unsigned int freq_in, unsigned int freq_out)
 {
 	u8 hppllctl, lppllctl;
@@ -315,8 +315,8 @@ int twl6040_set_pll(struct twl6040 *twl6040, enum twl6040_pll_id id,
 	hppllctl = twl6040_reg_read(twl6040, TWL6040_REG_HPPLLCTL);
 	lppllctl = twl6040_reg_read(twl6040, TWL6040_REG_LPPLLCTL);
 
-	switch (id) {
-	case TWL6040_LPPLL_ID:
+	switch (pll_id) {
+	case TWL6040_SYSCLK_SEL_LPPLL:
 		/* low-power PLL divider */
 		switch (freq_out) {
 		case 17640000:
@@ -352,10 +352,8 @@ int twl6040_set_pll(struct twl6040 *twl6040, enum twl6040_pll_id id,
 			ret = -EINVAL;
 			goto pll_out;
 		}
-
-		twl6040->pll = TWL6040_LPPLL_ID;
 		break;
-	case TWL6040_HPPLL_ID:
+	case TWL6040_SYSCLK_SEL_HPPLL:
 		/* high-performance PLL can provide only 19.2 MHz */
 		if (freq_out != 19200000) {
 			dev_err(&twl6040_dev->dev,
@@ -406,16 +404,15 @@ int twl6040_set_pll(struct twl6040 *twl6040, enum twl6040_pll_id id,
 		twl6040_reg_write(twl6040, TWL6040_REG_LPPLLCTL, lppllctl);
 		lppllctl &= ~TWL6040_LPLLENA;
 		twl6040_reg_write(twl6040, TWL6040_REG_LPPLLCTL, lppllctl);
-
-		twl6040->pll = TWL6040_HPPLL_ID;
 		break;
 	default:
-		dev_err(&twl6040_dev->dev, "unknown pll id %d\n", id);
+		dev_err(&twl6040_dev->dev, "unknown pll id %d\n", pll_id);
 		ret = -EINVAL;
 		goto pll_out;
 	}
 
 	twl6040->sysclk = freq_out;
+	twl6040->pll = pll_id;
 
 pll_out:
 	mutex_unlock(&twl6040->mutex);
@@ -423,9 +420,12 @@ int twl6040_set_pll(struct twl6040 *twl6040, enum twl6040_pll_id id,
 }
 EXPORT_SYMBOL(twl6040_set_pll);
 
-enum twl6040_pll_id twl6040_get_pll(struct twl6040 *twl6040)
+int twl6040_get_pll(struct twl6040 *twl6040)
 {
-	return twl6040->pll;
+	if (twl6040->power_count)
+		return twl6040->pll;
+	else
+		return -ENODEV;
 }
 EXPORT_SYMBOL(twl6040_get_pll);
 
diff --git a/trunk/include/linux/mfd/twl6040.h b/trunk/include/linux/mfd/twl6040.h
index df890a247c36..4c806f6d663e 100644
--- a/trunk/include/linux/mfd/twl6040.h
+++ b/trunk/include/linux/mfd/twl6040.h
@@ -165,9 +165,6 @@
 #define TWL6040_RESETSPLIT		0x04
 #define TWL6040_INTCLRMODE		0x08
 
-#define TWL6040_SYSCLK_SEL_LPPLL	1
-#define TWL6040_SYSCLK_SEL_HPPLL	2
-
 /* STATUS (0x2E) fields */
 
 #define TWL6040_PLUGCOMP		0x02
@@ -188,11 +185,9 @@
 #define TWL6040_IRQ_VIB			4
 #define TWL6040_IRQ_READY		5
 
-enum twl6040_pll_id {
-	TWL6040_NOPLL_ID,
-	TWL6040_LPPLL_ID,
-	TWL6040_HPPLL_ID,
-};
+/* PLL selection */
+#define TWL6040_SYSCLK_SEL_LPPLL	0
+#define TWL6040_SYSCLK_SEL_HPPLL	1
 
 struct twl6040 {
 	struct device *dev;
@@ -206,7 +201,7 @@ struct twl6040 {
 	int power_count;
 	int rev;
 
-	enum twl6040_pll_id pll;
+	int pll;
 	unsigned int sysclk;
 
 	unsigned int irq;
@@ -223,9 +218,9 @@ int twl6040_set_bits(struct twl6040 *twl6040, unsigned int reg,
 int twl6040_clear_bits(struct twl6040 *twl6040, unsigned int reg,
 		       u8 mask);
 int twl6040_power(struct twl6040 *twl6040, int on);
-int twl6040_set_pll(struct twl6040 *twl6040, enum twl6040_pll_id id,
+int twl6040_set_pll(struct twl6040 *twl6040, int pll_id,
 		    unsigned int freq_in, unsigned int freq_out);
-enum twl6040_pll_id twl6040_get_pll(struct twl6040 *twl6040);
+int twl6040_get_pll(struct twl6040 *twl6040);
 unsigned int twl6040_get_sysclk(struct twl6040 *twl6040);
 int twl6040_irq_init(struct twl6040 *twl6040);
 void twl6040_irq_exit(struct twl6040 *twl6040);