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authorMark Brown <broonie@opensource.wolfsonmicro.com>2011-03-18 12:50:10 +0000
committerSamuel Ortiz <sameo@linux.intel.com>2011-03-23 10:42:11 +0100
commit316b6cc081b112546842d44ded21512bd8454a85 (patch)
tree8159c62fb4e04cc98beef9a4c6543bbc7f502204
parent8bd4d7c4c500e88bff975bbcb7fe0d89da319cdd (diff)
mfd: Push byte swaps out of wm8994 bulk read path
For consistency with the write path push byte swaps of the WM8994 register data out of the bulk read data path into the per-register APIs. The only user of the bulk register read is the interrupt code which is updated to do the swaps itself part of this patch. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
-rw-r--r--drivers/mfd/wm8994-core.c10
-rw-r--r--drivers/mfd/wm8994-irq.c6
2 files changed, 9 insertions, 7 deletions
diff --git a/drivers/mfd/wm8994-core.c b/drivers/mfd/wm8994-core.c
index 3f5b7cc85f1..e198d40292e 100644
--- a/drivers/mfd/wm8994-core.c
+++ b/drivers/mfd/wm8994-core.c
@@ -40,10 +40,8 @@ static int wm8994_read(struct wm8994 *wm8994, unsigned short reg,
return ret;
for (i = 0; i < bytes / 2; i++) {
- buf[i] = be16_to_cpu(buf[i]);
-
dev_vdbg(wm8994->dev, "Read %04x from R%d(0x%x)\n",
- buf[i], reg + i, reg + i);
+ be16_to_cpu(buf[i]), reg + i, reg + i);
}
return 0;
@@ -69,7 +67,7 @@ int wm8994_reg_read(struct wm8994 *wm8994, unsigned short reg)
if (ret < 0)
return ret;
else
- return val;
+ return be16_to_cpu(val);
}
EXPORT_SYMBOL_GPL(wm8994_reg_read);
@@ -79,7 +77,7 @@ EXPORT_SYMBOL_GPL(wm8994_reg_read);
* @wm8994: Device to read from
* @reg: First register
* @count: Number of registers
- * @buf: Buffer to fill.
+ * @buf: Buffer to fill. The data will be returned big endian.
*/
int wm8994_bulk_read(struct wm8994 *wm8994, unsigned short reg,
int count, u16 *buf)
@@ -180,6 +178,8 @@ int wm8994_set_bits(struct wm8994 *wm8994, unsigned short reg,
if (ret < 0)
goto out;
+ r = be16_to_cpu(r);
+
r &= ~mask;
r |= val;
diff --git a/drivers/mfd/wm8994-irq.c b/drivers/mfd/wm8994-irq.c
index f5e439a37dc..1e3bf4a2ff8 100644
--- a/drivers/mfd/wm8994-irq.c
+++ b/drivers/mfd/wm8994-irq.c
@@ -225,9 +225,11 @@ static irqreturn_t wm8994_irq_thread(int irq, void *data)
return IRQ_NONE;
}
- /* Apply masking */
- for (i = 0; i < WM8994_NUM_IRQ_REGS; i++)
+ /* Bit swap and apply masking */
+ for (i = 0; i < WM8994_NUM_IRQ_REGS; i++) {
+ status[i] = be16_to_cpu(status[i]);
status[i] &= ~wm8994->irq_masks_cur[i];
+ }
/* Report */
for (i = 0; i < ARRAY_SIZE(wm8994_irqs); i++) {