| Message ID | 271a7735b02b6a8b1f54c018e38ea932d1fd299e.1570633189.git.vilhelm.gray@gmail.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Introduce the for_each_set_clump8 macro | expand |
On Thu, Oct 10, 2019 at 12:27 AM William Breathitt Gray <vilhelm.gray@gmail.com> wrote: > > Replace verbose implementation in set_multiple callback with > for_each_set_clump8 macro to simplify code and improve clarity. An > improvement in this case is that banks that are not masked will now be > skipped. > > Cc: Masahiro Yamada <yamada.masahiro@socionext.com> > Signed-off-by: William Breathitt Gray <vilhelm.gray@gmail.com> > --- > drivers/gpio/gpio-uniphier.c | 16 ++++++---------- > 1 file changed, 6 insertions(+), 10 deletions(-) > > diff --git a/drivers/gpio/gpio-uniphier.c b/drivers/gpio/gpio-uniphier.c > index 93cdcc41e9fb..3e4b15d0231e 100644 > --- a/drivers/gpio/gpio-uniphier.c > +++ b/drivers/gpio/gpio-uniphier.c > @@ -15,9 +15,6 @@ > #include <linux/spinlock.h> > #include <dt-bindings/gpio/uniphier-gpio.h> > > -#define UNIPHIER_GPIO_BANK_MASK \ > - GENMASK((UNIPHIER_GPIO_LINES_PER_BANK) - 1, 0) > - > #define UNIPHIER_GPIO_IRQ_MAX_NUM 24 > > #define UNIPHIER_GPIO_PORT_DATA 0x0 /* data */ > @@ -147,15 +144,14 @@ static void uniphier_gpio_set(struct gpio_chip *chip, > static void uniphier_gpio_set_multiple(struct gpio_chip *chip, > unsigned long *mask, unsigned long *bits) > { > - unsigned int bank, shift, bank_mask, bank_bits; > - int i; > + unsigned long i; > + unsigned long bank_mask; > + unsigned long bank; > + unsigned long bank_bits; Please do not split it into multiple lines unless you need to do so. Thanks. > - for (i = 0; i < chip->ngpio; i += UNIPHIER_GPIO_LINES_PER_BANK) { > + for_each_set_clump8(i, bank_mask, mask, chip->ngpio) { > bank = i / UNIPHIER_GPIO_LINES_PER_BANK; > - shift = i % BITS_PER_LONG; > - bank_mask = (mask[BIT_WORD(i)] >> shift) & > - UNIPHIER_GPIO_BANK_MASK; > - bank_bits = bits[BIT_WORD(i)] >> shift; > + bank_bits = bitmap_get_value8(bits, i); > > uniphier_gpio_bank_write(chip, bank, UNIPHIER_GPIO_PORT_DATA, > bank_mask, bank_bits); > -- > 2.23.0 >
On Thu, Oct 10, 2019 at 01:33:06AM +0900, Masahiro Yamada wrote: > On Thu, Oct 10, 2019 at 12:27 AM William Breathitt Gray > <vilhelm.gray@gmail.com> wrote: > > > > Replace verbose implementation in set_multiple callback with > > for_each_set_clump8 macro to simplify code and improve clarity. An > > improvement in this case is that banks that are not masked will now be > > skipped. > > > > Cc: Masahiro Yamada <yamada.masahiro@socionext.com> > > Signed-off-by: William Breathitt Gray <vilhelm.gray@gmail.com> > > --- > > drivers/gpio/gpio-uniphier.c | 16 ++++++---------- > > 1 file changed, 6 insertions(+), 10 deletions(-) > > > > diff --git a/drivers/gpio/gpio-uniphier.c b/drivers/gpio/gpio-uniphier.c > > index 93cdcc41e9fb..3e4b15d0231e 100644 > > --- a/drivers/gpio/gpio-uniphier.c > > +++ b/drivers/gpio/gpio-uniphier.c > > @@ -15,9 +15,6 @@ > > #include <linux/spinlock.h> > > #include <dt-bindings/gpio/uniphier-gpio.h> > > > > -#define UNIPHIER_GPIO_BANK_MASK \ > > - GENMASK((UNIPHIER_GPIO_LINES_PER_BANK) - 1, 0) > > - > > #define UNIPHIER_GPIO_IRQ_MAX_NUM 24 > > > > #define UNIPHIER_GPIO_PORT_DATA 0x0 /* data */ > > @@ -147,15 +144,14 @@ static void uniphier_gpio_set(struct gpio_chip *chip, > > static void uniphier_gpio_set_multiple(struct gpio_chip *chip, > > unsigned long *mask, unsigned long *bits) > > { > > - unsigned int bank, shift, bank_mask, bank_bits; > > - int i; > > + unsigned long i; > > + unsigned long bank_mask; > > + unsigned long bank; > > + unsigned long bank_bits; > > > Please do not split it into multiple lines > unless you need to do so. > > Thanks. No problem, I'll update this patch to declare them all on the same line. William Breathitt Gray > > - for (i = 0; i < chip->ngpio; i += UNIPHIER_GPIO_LINES_PER_BANK) { > > + for_each_set_clump8(i, bank_mask, mask, chip->ngpio) { > > bank = i / UNIPHIER_GPIO_LINES_PER_BANK; > > - shift = i % BITS_PER_LONG; > > - bank_mask = (mask[BIT_WORD(i)] >> shift) & > > - UNIPHIER_GPIO_BANK_MASK; > > - bank_bits = bits[BIT_WORD(i)] >> shift; > > + bank_bits = bitmap_get_value8(bits, i); > > > > uniphier_gpio_bank_write(chip, bank, UNIPHIER_GPIO_PORT_DATA, > > bank_mask, bank_bits); > > -- > > 2.23.0 > > > > > -- > Best Regards > Masahiro Yamada
diff --git a/drivers/gpio/gpio-uniphier.c b/drivers/gpio/gpio-uniphier.c index 93cdcc41e9fb..3e4b15d0231e 100644 --- a/drivers/gpio/gpio-uniphier.c +++ b/drivers/gpio/gpio-uniphier.c @@ -15,9 +15,6 @@ #include <linux/spinlock.h> #include <dt-bindings/gpio/uniphier-gpio.h> -#define UNIPHIER_GPIO_BANK_MASK \ - GENMASK((UNIPHIER_GPIO_LINES_PER_BANK) - 1, 0) - #define UNIPHIER_GPIO_IRQ_MAX_NUM 24 #define UNIPHIER_GPIO_PORT_DATA 0x0 /* data */ @@ -147,15 +144,14 @@ static void uniphier_gpio_set(struct gpio_chip *chip, static void uniphier_gpio_set_multiple(struct gpio_chip *chip, unsigned long *mask, unsigned long *bits) { - unsigned int bank, shift, bank_mask, bank_bits; - int i; + unsigned long i; + unsigned long bank_mask; + unsigned long bank; + unsigned long bank_bits; - for (i = 0; i < chip->ngpio; i += UNIPHIER_GPIO_LINES_PER_BANK) { + for_each_set_clump8(i, bank_mask, mask, chip->ngpio) { bank = i / UNIPHIER_GPIO_LINES_PER_BANK; - shift = i % BITS_PER_LONG; - bank_mask = (mask[BIT_WORD(i)] >> shift) & - UNIPHIER_GPIO_BANK_MASK; - bank_bits = bits[BIT_WORD(i)] >> shift; + bank_bits = bitmap_get_value8(bits, i); uniphier_gpio_bank_write(chip, bank, UNIPHIER_GPIO_PORT_DATA, bank_mask, bank_bits);
Replace verbose implementation in set_multiple callback with for_each_set_clump8 macro to simplify code and improve clarity. An improvement in this case is that banks that are not masked will now be skipped. Cc: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: William Breathitt Gray <vilhelm.gray@gmail.com> --- drivers/gpio/gpio-uniphier.c | 16 ++++++---------- 1 file changed, 6 insertions(+), 10 deletions(-)