On Fri, Sep 11, 2020 at 12:14:19PM +0900, Chanwoo Choi wrote:
> On 9/10/20 12:01 AM, Krzysztof Kozlowski wrote:
> > The register addresses are not continuous, so use simple defines for
> > them. This also makes it easier to find the address for register.
> >
> > No functional change.
> >
> > Signed-off-by: Krzysztof Kozlowski <k...@kernel.org>
> > ---
> > drivers/extcon/extcon-ptn5150.c | 22 ++++++++++------------
> > 1 file changed, 10 insertions(+), 12 deletions(-)
> >
> > diff --git a/drivers/extcon/extcon-ptn5150.c
> > b/drivers/extcon/extcon-ptn5150.c
> > index dda5b3a3a908..1b68f56d8372 100644
> > --- a/drivers/extcon/extcon-ptn5150.c
> > +++ b/drivers/extcon/extcon-ptn5150.c
> > @@ -19,18 +19,16 @@
> > #include <linux/gpio/consumer.h>
> >
> > /* PTN5150 registers */
> > -enum ptn5150_reg {
> > - PTN5150_REG_DEVICE_ID = 0x01,
> > - PTN5150_REG_CONTROL,
> > - PTN5150_REG_INT_STATUS,
> > - PTN5150_REG_CC_STATUS,
> > - PTN5150_REG_CON_DET = 0x09,
> > - PTN5150_REG_VCONN_STATUS,
> > - PTN5150_REG_RESET,
> > - PTN5150_REG_INT_MASK = 0x18,
> > - PTN5150_REG_INT_REG_STATUS,
> > - PTN5150_REG_END,
> > -};
> > +#define PTN5150_REG_DEVICE_ID 0x01
> > +#define PTN5150_REG_CONTROL 0x02
> > +#define PTN5150_REG_INT_STATUS 0x03
> > +#define PTN5150_REG_CC_STATUS 0x04
> > +#define PTN5150_REG_CON_DET 0x09
> > +#define PTN5150_REG_VCONN_STATUS 0x0a
> > +#define PTN5150_REG_RESET 0x0b
> > +#define PTN5150_REG_INT_MASK 0x18
> > +#define PTN5150_REG_INT_REG_STATUS 0x19
> > +#define PTN5150_REG_END
> > PTN5150_REG_INT_REG_STATUS
>
> PTN5150_REG_END should be (PTN5150_REG_INT_REG_STATUS + 1)
> for regmap operation of PTN5150_REG_INT_REG_STATUS.
Why? This goes to regmap's max_register which is the last register
allowed to read:
drivers/base/regmap/regmap-debugfs.c: for (i = 0; i <= map->max_register; i
+= map->reg_stride) {
drivers/base/regmap/regmap.c: if (map->max_register && reg >
map->max_register)
regmap_get_max_register() - Report the max register value
Best regards,
Krzysztof
