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Message-ID: <1309773958-14608-6-git-send-email-peter.ujfalusi@ti.com>
Date: Mon, 4 Jul 2011 13:05:57 +0300
From: Peter Ujfalusi <peter.ujfalusi@...com>
To: Liam Girdwood <lrg@...com>, Tony Lindgren <tony@...mide.com>,
Mark Brown <broonie@...nsource.wolfsonmicro.com>,
Samuel Ortiz <sameo@...ux.intel.com>
CC: linux-kernel@...r.kernel.org, alsa-devel@...a-project.org,
Misael Lopez Cruz <misael.lopez@...com>
Subject: [PATCH 5/6] MFD: twl6040: Remove enum for PLL tracking
There is no need to have two different types for
tracking the selected PLL.
Use only the defines, when dealing with the PLLs.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@...com>
---
drivers/mfd/twl6040-core.c | 26 +++++++++++++-------------
include/linux/mfd/twl6040.h | 17 ++++++-----------
2 files changed, 19 insertions(+), 24 deletions(-)
diff --git a/drivers/mfd/twl6040-core.c b/drivers/mfd/twl6040-core.c
index b6e5338..50152d7 100644
--- a/drivers/mfd/twl6040-core.c
+++ b/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;
}
@@ -310,7 +310,7 @@ int twl6040_is_powered(struct twl6040 *twl6040)
}
EXPORT_SYMBOL(twl6040_is_powered);
-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;
@@ -321,8 +321,8 @@ 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:
@@ -358,10 +358,8 @@ 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,
@@ -412,16 +410,15 @@ 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);
@@ -429,9 +426,12 @@ pll_out:
}
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/include/linux/mfd/twl6040.h b/include/linux/mfd/twl6040.h
index d384a01..2008f2e 100644
--- a/include/linux/mfd/twl6040.h
+++ b/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;
@@ -251,9 +246,9 @@ int twl6040_clear_bits(struct twl6040 *twl6040, unsigned int reg,
u8 mask);
int twl6040_power(struct twl6040 *twl6040, int on);
int twl6040_is_powered(struct twl6040 *twl6040);
-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);
--
1.7.6
--
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