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authorStephen Boyd <sboyd@codeaurora.org>2015-08-28 12:21:42 -0700
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2015-10-04 13:03:15 +0100
commitd5144796db928b1f7a074c4be3575c50951c9569 (patch)
treeb593bfc90fe634bef8829122496d873bdf9941f9 /drivers/spmi
parent48e3d668b7902cca3c61e9e2098e7f76b5646c28 (diff)
spmi: pmic-arb: Don't byte swap when reading/writing FIFO
We don't want to swap bytes that we're reading and writing to the FIFOs when we're running on a big-endian CPU. Doing so causes problems like where the qcom-spmi-iadc driver can't detect the type of device because the bytes are all mixed up. Use the raw IO accessors for these API instead, and collapse pmic_arb_base_read() into the byte reading API so that we aren't tempted to read non-FIFO data like commands with that function. Cc: Andy Gross <agross@codeaurora.org> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> Acked-by: Bjorn Andersson <bjorn.andersson@sonymobile.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/spmi')
-rw-r--r--drivers/spmi/spmi-pmic-arb.c9
1 files changed, 2 insertions, 7 deletions
diff --git a/drivers/spmi/spmi-pmic-arb.c b/drivers/spmi/spmi-pmic-arb.c
index 4a3cf9ba152f..fce5c0d9e3bd 100644
--- a/drivers/spmi/spmi-pmic-arb.c
+++ b/drivers/spmi/spmi-pmic-arb.c
@@ -168,11 +168,6 @@ struct pmic_arb_ver_ops {
u32 (*irq_clear)(u8 n);
};
-static inline u32 pmic_arb_base_read(struct spmi_pmic_arb_dev *dev, u32 offset)
-{
- return readl_relaxed(dev->rd_base + offset);
-}
-
static inline void pmic_arb_base_write(struct spmi_pmic_arb_dev *dev,
u32 offset, u32 val)
{
@@ -193,7 +188,7 @@ static inline void pmic_arb_set_rd_cmd(struct spmi_pmic_arb_dev *dev,
*/
static void pa_read_data(struct spmi_pmic_arb_dev *dev, u8 *buf, u32 reg, u8 bc)
{
- u32 data = pmic_arb_base_read(dev, reg);
+ u32 data = __raw_readl(dev->rd_base + reg);
memcpy(buf, &data, (bc & 3) + 1);
}
@@ -208,7 +203,7 @@ pa_write_data(struct spmi_pmic_arb_dev *dev, const u8 *buf, u32 reg, u8 bc)
{
u32 data = 0;
memcpy(&data, buf, (bc & 3) + 1);
- pmic_arb_base_write(dev, reg, data);
+ __raw_writel(data, dev->wr_base + reg);
}
static int pmic_arb_wait_for_done(struct spmi_controller *ctrl,

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