---

yaml --- r: 329971 b: refs/heads/master c: 2275c54 h: refs/heads/master i: 329969: 42a3019 329967: 11693b8 v: v3
git-mirror · Sep 18, 2012 · c9be862 · c9be862
1 parent c9e573f
commit c9be862
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Showing 3 changed files with 34 additions and 1 deletion.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: cdf4b67099ee8e038178a9e7d83c1aa16618c1ca
+refs/heads/master: 2275c544cb824b469a386e411cbcaa01a19d4f55
diff --git a/trunk/drivers/mfd/twl-core.c b/trunk/drivers/mfd/twl-core.c
@@ -552,6 +552,38 @@ int twl_get_version(void)
 }
 EXPORT_SYMBOL_GPL(twl_get_version);
 
+/**
+ * twl_get_hfclk_rate - API to get TWL external HFCLK clock rate.
+ *
+ * Api to get the TWL HFCLK rate based on BOOT_CFG register.
+ */
+int twl_get_hfclk_rate(void)
+{
+	u8 ctrl;
+	int rate;
+
+	twl_i2c_read_u8(TWL_MODULE_PM_MASTER, &ctrl, R_CFG_BOOT);
+
+	switch (ctrl & 0x3) {
+	case HFCLK_FREQ_19p2_MHZ:
+		rate = 19200000;
+		break;
+	case HFCLK_FREQ_26_MHZ:
+		rate = 26000000;
+		break;
+	case HFCLK_FREQ_38p4_MHZ:
+		rate = 38400000;
+		break;
+	default:
+		pr_err("TWL4030: HFCLK is not configured\n");
+		rate = -EINVAL;
+		break;
+	}
+
+	return rate;
+}
+EXPORT_SYMBOL_GPL(twl_get_hfclk_rate);
+
 static struct device *
 add_numbered_child(unsigned chip, const char *name, int num,
 		void *pdata, unsigned pdata_len,

diff --git a/trunk/include/linux/i2c/twl.h b/trunk/include/linux/i2c/twl.h
@@ -188,6 +188,7 @@ int twl_i2c_read(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes);
 
 int twl_get_type(void);
 int twl_get_version(void);
+int twl_get_hfclk_rate(void);
 
 int twl6030_interrupt_unmask(u8 bit_mask, u8 offset);
 int twl6030_interrupt_mask(u8 bit_mask, u8 offset);