diff options
| author | Stephen Boyd <sboyd@codeaurora.org> | 2015-08-28 12:21:42 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-10-04 13:03:15 +0100 |
| commit | d5144796db928b1f7a074c4be3575c50951c9569 (patch) | |
| tree | b593bfc90fe634bef8829122496d873bdf9941f9 /drivers/spmi | |
| parent | 48e3d668b7902cca3c61e9e2098e7f76b5646c28 (diff) | |
| download | lwn-d5144796db928b1f7a074c4be3575c50951c9569.tar.gz lwn-d5144796db928b1f7a074c4be3575c50951c9569.zip | |
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.c | 9 |
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, |