[PATCH 6/6 v14] gpio: Add block gpio to several gpio drivers

From: Roland Stigge
Date: Tue Jan 22 2013 - 07:07:52 EST

This patch adds block GPIO support to several gpio drivers.

This implements block GPIO only for some selected drivers since block GPIO is
an optional feature which may not be suitable for every GPIO hardware. (With
automatic fallback to the single GPIO functions if not available in a driver.)

Signed-off-by: Roland Stigge <stigge@xxxxxxxxx>

For pinctrl-at91.c:
Acked-by: Nicolas Ferre <nicolas.ferre@xxxxxxxxx>

---
drivers/gpio/Kconfig | 2
drivers/gpio/gpio-em.c | 23 ++++++++++
drivers/gpio/gpio-ge.c | 29 +++++++++++++
drivers/gpio/gpio-generic.c | 56 +++++++++++++++++++++++++
drivers/gpio/gpio-ks8695.c | 34 +++++++++++++++
drivers/gpio/gpio-lpc32xx.c | 82 ++++++++++++++++++++++++++++++++++++++
drivers/gpio/gpio-max730x.c | 61 ++++++++++++++++++++++++++++
drivers/gpio/gpio-max732x.c | 59 +++++++++++++++++++++++++++
drivers/gpio/gpio-mc33880.c | 16 +++++++
drivers/gpio/gpio-ml-ioh.c | 27 ++++++++++++
drivers/gpio/gpio-mm-lantiq.c | 22 ++++++++++
drivers/gpio/gpio-mpc5200.c | 64 +++++++++++++++++++++++++++++
drivers/gpio/gpio-mpc8xxx.c | 41 +++++++++++++++++++
drivers/gpio/gpio-pca953x.c | 64 +++++++++++++++++++++++++++++
drivers/gpio/gpio-pcf857x.c | 24 +++++++++++
drivers/gpio/gpio-pch.c | 27 ++++++++++++
drivers/gpio/gpio-pl061.c | 17 +++++++
drivers/gpio/gpio-sa1100.c | 20 +++++++++
drivers/gpio/gpio-samsung.c | 31 ++++++++++++++
drivers/gpio/gpio-twl6040.c | 32 ++++++++++++++
drivers/gpio/gpio-ucb1400.c | 23 ++++++++++
drivers/gpio/gpio-vt8500.c | 24 +++++++++++
drivers/gpio/gpio-xilinx.c | 44 ++++++++++++++++++++
drivers/pinctrl/pinctrl-at91.c | 29 +++++++++++++
drivers/pinctrl/pinctrl-nomadik.c | 36 ++++++++++++++++
25 files changed, 887 insertions(+)

--- linux-2.6.orig/drivers/gpio/Kconfig
+++ linux-2.6/drivers/gpio/Kconfig
@@ -144,11 +144,13 @@ config GPIO_MM_LANTIQ
config GPIO_MPC5200
def_bool y
depends on PPC_MPC52xx
+ select BITREVERSE

config GPIO_MPC8XXX
bool "MPC512x/MPC8xxx GPIO support"
depends on PPC_MPC512x || PPC_MPC831x || PPC_MPC834x || PPC_MPC837x || \
FSL_SOC_BOOKE || PPC_86xx
+ select BITREVERSE
help
Say Y here if you're going to use hardware that connects to the
MPC512x/831x/834x/837x/8572/8610 GPIOs.
--- linux-2.6.orig/drivers/gpio/gpio-em.c
+++ linux-2.6/drivers/gpio/gpio-em.c
@@ -202,6 +202,27 @@ static void em_gio_set(struct gpio_chip
__em_gio_set(chip, GIO_OH, offset - 16, value);
}

+static unsigned long em_gio_get_block(struct gpio_chip *chip,
+ unsigned long mask)
+{
+ return (int)(em_gio_read(gpio_to_priv(chip), GIO_I) & mask);
+}
+
+static void em_gio_set_block(struct gpio_chip *chip, unsigned long mask,
+ unsigned long values)
+{
+ unsigned long mask_ol = mask & 0xFFFF;
+ unsigned long mask_oh = mask >> 16;
+
+ unsigned long values_ol = values & mask_ol;
+ unsigned long values_oh = (values >> 16) & mask_oh;
+
+ em_gio_write(gpio_to_priv(chip), GIO_OL,
+ mask_ol << 16 | values_ol);
+ em_gio_write(gpio_to_priv(chip), GIO_OH,
+ mask_oh << 16 | values_oh);
+}
+
static int em_gio_direction_output(struct gpio_chip *chip, unsigned offset,
int value)
{
@@ -282,8 +303,10 @@ static int em_gio_probe(struct platform_
gpio_chip = &p->gpio_chip;
gpio_chip->direction_input = em_gio_direction_input;
gpio_chip->get = em_gio_get;
+ gpio_chip->get_block = em_gio_get_block;
gpio_chip->direction_output = em_gio_direction_output;
gpio_chip->set = em_gio_set;
+ gpio_chip->set_block = em_gio_set_block;
gpio_chip->to_irq = em_gio_to_irq;
gpio_chip->label = name;
gpio_chip->owner = THIS_MODULE;
--- linux-2.6.orig/drivers/gpio/gpio-ge.c
+++ linux-2.6/drivers/gpio/gpio-ge.c
@@ -100,6 +100,29 @@ static void gef_gpio_set(struct gpio_chi
_gef_gpio_set(mmchip->regs + GEF_GPIO_OUT, offset, value);
}

+static unsigned long gef_gpio_get_block(struct gpio_chip *chip,
+ unsigned long mask)
+{
+ struct of_mm_gpio_chip *mmchip = to_of_mm_gpio_chip(chip);
+
+ return ioread32be(mmchip->regs + GEF_GPIO_IN) & mask;
+}
+
+static void gef_gpio_set_block(struct gpio_chip *chip,
+ unsigned long mask, unsigned long values)
+{
+ struct of_mm_gpio_chip *mmchip = to_of_mm_gpio_chip(chip);
+ void __iomem *reg = mmchip->regs + GEF_GPIO_OUT;
+ unsigned int data;
+
+ data = ioread32be(reg);
+
+ data &= ~mask;
+ data |= values & mask;
+
+ iowrite32be(data, reg);
+}
+
static int __init gef_gpio_init(void)
{
struct device_node *np;
@@ -125,6 +148,8 @@ static int __init gef_gpio_init(void)
gef_gpio_chip->gc.direction_output = gef_gpio_dir_out;
gef_gpio_chip->gc.get = gef_gpio_get;
gef_gpio_chip->gc.set = gef_gpio_set;
+ gef_gpio_chip->gc.get_block = gef_gpio_get_block;
+ gef_gpio_chip->gc.set_block = gef_gpio_set_block;

/* This function adds a memory mapped GPIO chip */
retval = of_mm_gpiochip_add(np, gef_gpio_chip);
@@ -153,6 +178,8 @@ static int __init gef_gpio_init(void)
gef_gpio_chip->gc.direction_output = gef_gpio_dir_out;
gef_gpio_chip->gc.get = gef_gpio_get;
gef_gpio_chip->gc.set = gef_gpio_set;
+ gef_gpio_chip->gc.get_block = gef_gpio_get_block;
+ gef_gpio_chip->gc.set_block = gef_gpio_set_block;

/* This function adds a memory mapped GPIO chip */
retval = of_mm_gpiochip_add(np, gef_gpio_chip);
@@ -181,6 +208,8 @@ static int __init gef_gpio_init(void)
gef_gpio_chip->gc.direction_output = gef_gpio_dir_out;
gef_gpio_chip->gc.get = gef_gpio_get;
gef_gpio_chip->gc.set = gef_gpio_set;
+ gef_gpio_chip->gc.get_block = gef_gpio_get_block;
+ gef_gpio_chip->gc.set_block = gef_gpio_set_block;

/* This function adds a memory mapped GPIO chip */
retval = of_mm_gpiochip_add(np, gef_gpio_chip);
--- linux-2.6.orig/drivers/gpio/gpio-generic.c
+++ linux-2.6/drivers/gpio/gpio-generic.c
@@ -122,6 +122,13 @@ static int bgpio_get(struct gpio_chip *g
return bgc->read_reg(bgc->reg_dat) & bgc->pin2mask(bgc, gpio);
}

+static unsigned long bgpio_get_block(struct gpio_chip *gc, unsigned long mask)
+{
+ struct bgpio_chip *bgc = to_bgpio_chip(gc);
+
+ return bgc->read_reg(bgc->reg_dat) & mask;
+}
+
static void bgpio_set(struct gpio_chip *gc, unsigned int gpio, int val)
{
struct bgpio_chip *bgc = to_bgpio_chip(gc);
@@ -170,6 +177,51 @@ static void bgpio_set_set(struct gpio_ch
spin_unlock_irqrestore(&bgc->lock, flags);
}

+static void bgpio_set_block(struct gpio_chip *gc, unsigned long mask,
+ unsigned long values)
+{
+ struct bgpio_chip *bgc = to_bgpio_chip(gc);
+ unsigned long flags;
+
+ spin_lock_irqsave(&bgc->lock, flags);
+
+ bgc->data &= ~mask;
+ bgc->data |= values & mask;
+
+ bgc->write_reg(bgc->reg_dat, bgc->data);
+
+ spin_unlock_irqrestore(&bgc->lock, flags);
+}
+
+static void bgpio_set_with_clear_block(struct gpio_chip *gc, unsigned long mask,
+ unsigned long values)
+{
+ struct bgpio_chip *bgc = to_bgpio_chip(gc);
+ unsigned long set_bits = values & mask;
+ unsigned long clr_bits = ~values & mask;
+
+ if (set_bits)
+ bgc->write_reg(bgc->reg_set, set_bits);
+ if (clr_bits)
+ bgc->write_reg(bgc->reg_set, clr_bits);
+}
+
+static void bgpio_set_set_block(struct gpio_chip *gc, unsigned long mask,
+ unsigned long values)
+{
+ struct bgpio_chip *bgc = to_bgpio_chip(gc);
+ unsigned long flags;
+
+ spin_lock_irqsave(&bgc->lock, flags);
+
+ bgc->data &= ~mask;
+ bgc->data |= values & mask;
+
+ bgc->write_reg(bgc->reg_set, bgc->data);
+
+ spin_unlock_irqrestore(&bgc->lock, flags);
+}
+
static int bgpio_simple_dir_in(struct gpio_chip *gc, unsigned int gpio)
{
return 0;
@@ -317,14 +369,18 @@ static int bgpio_setup_io(struct bgpio_c
bgc->reg_set = set;
bgc->reg_clr = clr;
bgc->gc.set = bgpio_set_with_clear;
+ bgc->gc.set_block = bgpio_set_with_clear_block;
} else if (set && !clr) {
bgc->reg_set = set;
bgc->gc.set = bgpio_set_set;
+ bgc->gc.set_block = bgpio_set_set_block;
} else {
bgc->gc.set = bgpio_set;
+ bgc->gc.set_block = bgpio_set_block;
}

bgc->gc.get = bgpio_get;
+ bgc->gc.get_block = bgpio_get_block;

return 0;
}
--- linux-2.6.orig/drivers/gpio/gpio-ks8695.c
+++ linux-2.6/drivers/gpio/gpio-ks8695.c
@@ -195,6 +195,38 @@ static int ks8695_gpio_get_value(struct


/*
+ * Set the state of GPIO lines simultaneously.
+ */
+static void ks8695_gpio_set_block(struct gpio_chip *gc,
+ unsigned long mask, unsigned long values)
+{
+ unsigned long x, flags;
+
+ local_irq_save(flags);
+
+ /* set output line state */
+ x = __raw_readl(KS8695_GPIO_VA + KS8695_IOPD);
+
+ x &= ~mask;
+ x |= values & mask;
+
+ __raw_writel(x, KS8695_GPIO_VA + KS8695_IOPD);
+
+ local_irq_restore(flags);
+}
+
+
+/*
+ * Read the state of GPIO lines simultaneously.
+ */
+static unsigned long ks8695_gpio_get_block(struct gpio_chip *gc,
+ unsigned long mask)
+{
+ return __raw_readl(KS8695_GPIO_VA + KS8695_IOPD) & mask;
+}
+
+
+/*
* Map GPIO line to IRQ number.
*/
static int ks8695_gpio_to_irq(struct gpio_chip *gc, unsigned int pin)
@@ -225,6 +257,8 @@ static struct gpio_chip ks8695_gpio_chip
.direction_output = ks8695_gpio_direction_output,
.get = ks8695_gpio_get_value,
.set = ks8695_gpio_set_value,
+ .get_block = ks8695_gpio_get_block,
+ .set_block = ks8695_gpio_set_block,
.to_irq = ks8695_gpio_to_irq,
.base = 0,
.ngpio = 16,
--- linux-2.6.orig/drivers/gpio/gpio-lpc32xx.c
+++ linux-2.6/drivers/gpio/gpio-lpc32xx.c
@@ -297,6 +297,22 @@ static int lpc32xx_gpio_get_value_p3(str
return __get_gpio_state_p3(group, pin);
}

+static unsigned long lpc32xx_gpio_get_block_p3(struct gpio_chip *chip,
+ unsigned long mask)
+{
+ struct lpc32xx_gpio_chip *group = to_lpc32xx_gpio(chip);
+ u32 bits = __raw_readl(group->gpio_grp->inp_state);
+
+ /* In P3_INP_STATE, the 6 GPIOs are scattered over the register,
+ * rearranging to bits 0-5
+ */
+ bits >>= 10;
+ bits &= 0x401F;
+ bits |= (bits & 0x4000) >> 9;
+
+ return bits & mask & 0x3F;
+}
+
static int lpc32xx_gpi_get_value(struct gpio_chip *chip, unsigned pin)
{
struct lpc32xx_gpio_chip *group = to_lpc32xx_gpio(chip);
@@ -304,6 +320,15 @@ static int lpc32xx_gpi_get_value(struct
return __get_gpi_state_p3(group, pin);
}

+static unsigned long lpc32xx_gpi_get_block(struct gpio_chip *chip,
+ unsigned long mask)
+{
+ struct lpc32xx_gpio_chip *group = to_lpc32xx_gpio(chip);
+ u32 bits = __raw_readl(group->gpio_grp->inp_state);
+
+ return bits & mask;
+}
+
static int lpc32xx_gpio_dir_output_p012(struct gpio_chip *chip, unsigned pin,
int value)
{
@@ -351,6 +376,27 @@ static void lpc32xx_gpio_set_value_p3(st
__set_gpio_level_p3(group, pin, value);
}

+static void lpc32xx_gpio_set_block_p3(struct gpio_chip *chip,
+ unsigned long mask,
+ unsigned long values)
+{
+ struct lpc32xx_gpio_chip *group = to_lpc32xx_gpio(chip);
+ u32 set_bits = values & mask;
+ u32 clr_bits = ~values & mask;
+
+ /* States of GPIO 0-5 start at bit 25 */
+ set_bits <<= 25;
+ clr_bits <<= 25;
+
+ /* Note: On LPC32xx, GPOs can only be set at once or cleared at once,
+ * but not set and cleared at once
+ */
+ if (set_bits)
+ __raw_writel(set_bits, group->gpio_grp->outp_set);
+ if (clr_bits)
+ __raw_writel(clr_bits, group->gpio_grp->outp_clr);
+}
+
static void lpc32xx_gpo_set_value(struct gpio_chip *chip, unsigned pin,
int value)
{
@@ -366,6 +412,31 @@ static int lpc32xx_gpo_get_value(struct
return __get_gpo_state_p3(group, pin);
}

+static void lpc32xx_gpo_set_block(struct gpio_chip *chip, unsigned long mask,
+ unsigned long values)
+{
+ struct lpc32xx_gpio_chip *group = to_lpc32xx_gpio(chip);
+ u32 set_bits = values & mask;
+ u32 clr_bits = ~values & mask;
+
+ /* Note: On LPC32xx, GPOs can only be set at once or cleared at once,
+ * but not set and cleared at once
+ */
+ if (set_bits)
+ __raw_writel(set_bits, group->gpio_grp->outp_set);
+ if (clr_bits)
+ __raw_writel(clr_bits, group->gpio_grp->outp_clr);
+}
+
+static unsigned long lpc32xx_gpo_get_block(struct gpio_chip *chip,
+ unsigned long mask)
+{
+ struct lpc32xx_gpio_chip *group = to_lpc32xx_gpio(chip);
+ u32 bits = __raw_readl(group->gpio_grp->outp_state);
+
+ return bits & mask;
+}
+
static int lpc32xx_gpio_request(struct gpio_chip *chip, unsigned pin)
{
if (pin < chip->ngpio)
@@ -440,8 +511,10 @@ static struct lpc32xx_gpio_chip lpc32xx_
.label = "gpio_p0",
.direction_input = lpc32xx_gpio_dir_input_p012,
.get = lpc32xx_gpio_get_value_p012,
+ .get_block = lpc32xx_gpi_get_block,
.direction_output = lpc32xx_gpio_dir_output_p012,
.set = lpc32xx_gpio_set_value_p012,
+ .set_block = lpc32xx_gpo_set_block,
.request = lpc32xx_gpio_request,
.to_irq = lpc32xx_gpio_to_irq_p01,
.base = LPC32XX_GPIO_P0_GRP,
@@ -456,8 +529,10 @@ static struct lpc32xx_gpio_chip lpc32xx_
.label = "gpio_p1",
.direction_input = lpc32xx_gpio_dir_input_p012,
.get = lpc32xx_gpio_get_value_p012,
+ .get_block = lpc32xx_gpi_get_block,
.direction_output = lpc32xx_gpio_dir_output_p012,
.set = lpc32xx_gpio_set_value_p012,
+ .set_block = lpc32xx_gpo_set_block,
.request = lpc32xx_gpio_request,
.to_irq = lpc32xx_gpio_to_irq_p01,
.base = LPC32XX_GPIO_P1_GRP,
@@ -472,8 +547,10 @@ static struct lpc32xx_gpio_chip lpc32xx_
.label = "gpio_p2",
.direction_input = lpc32xx_gpio_dir_input_p012,
.get = lpc32xx_gpio_get_value_p012,
+ .get_block = lpc32xx_gpi_get_block,
.direction_output = lpc32xx_gpio_dir_output_p012,
.set = lpc32xx_gpio_set_value_p012,
+ .set_block = lpc32xx_gpo_set_block,
.request = lpc32xx_gpio_request,
.base = LPC32XX_GPIO_P2_GRP,
.ngpio = LPC32XX_GPIO_P2_MAX,
@@ -487,8 +564,10 @@ static struct lpc32xx_gpio_chip lpc32xx_
.label = "gpio_p3",
.direction_input = lpc32xx_gpio_dir_input_p3,
.get = lpc32xx_gpio_get_value_p3,
+ .get_block = lpc32xx_gpio_get_block_p3,
.direction_output = lpc32xx_gpio_dir_output_p3,
.set = lpc32xx_gpio_set_value_p3,
+ .set_block = lpc32xx_gpio_set_block_p3,
.request = lpc32xx_gpio_request,
.to_irq = lpc32xx_gpio_to_irq_gpio_p3,
.base = LPC32XX_GPIO_P3_GRP,
@@ -503,6 +582,7 @@ static struct lpc32xx_gpio_chip lpc32xx_
.label = "gpi_p3",
.direction_input = lpc32xx_gpio_dir_in_always,
.get = lpc32xx_gpi_get_value,
+ .get_block = lpc32xx_gpi_get_block,
.request = lpc32xx_gpio_request,
.to_irq = lpc32xx_gpio_to_irq_gpi_p3,
.base = LPC32XX_GPI_P3_GRP,
@@ -517,7 +597,9 @@ static struct lpc32xx_gpio_chip lpc32xx_
.label = "gpo_p3",
.direction_output = lpc32xx_gpio_dir_out_always,
.set = lpc32xx_gpo_set_value,
+ .set_block = lpc32xx_gpo_set_block,
.get = lpc32xx_gpo_get_value,
+ .get_block = lpc32xx_gpo_get_block,
.request = lpc32xx_gpio_request,
.base = LPC32XX_GPO_P3_GRP,
.ngpio = LPC32XX_GPO_P3_MAX,
--- linux-2.6.orig/drivers/gpio/gpio-max730x.c
+++ linux-2.6/drivers/gpio/gpio-max730x.c
@@ -146,6 +146,44 @@ static int max7301_get(struct gpio_chip
return level;
}

+static unsigned long max7301_get_block(struct gpio_chip *chip,
+ unsigned long mask)
+{
+ struct max7301 *ts = container_of(chip, struct max7301, chip);
+ int i, j;
+ unsigned long result = 0;
+
+ for (i = 0; i < 4; i++) {
+ if ((mask >> (i * 8)) & 0xFF) { /* i/o only if necessary */
+ u8 in_level = ts->read(ts->dev, 0x44 + i * 8);
+ u8 in_mask = 0;
+ u8 out_level = (ts->out_level >> (i * 8 + 4)) & 0xFF;
+ u8 out_mask = 0;
+
+ for (j = 0; j < 8; j++) {
+ int offset = 4 + i * 8 + j;
+ int config = (ts->port_config[offset >> 2] >>
+ ((offset & 3) << 1)) &
+ PIN_CONFIG_MASK;
+
+ switch (config) {
+ case PIN_CONFIG_OUT:
+ out_mask |= BIT(j);
+ break;
+ case PIN_CONFIG_IN_WO_PULLUP:
+ case PIN_CONFIG_IN_PULLUP:
+ in_mask |= BIT(j);
+ }
+ }
+
+ result |= ((unsigned long)(in_level & in_mask) |
+ (out_level & out_mask)) << (i * 8);
+ }
+ }
+
+ return result & mask;
+}
+
static void max7301_set(struct gpio_chip *chip, unsigned offset, int value)
{
struct max7301 *ts = container_of(chip, struct max7301, chip);
@@ -160,6 +198,27 @@ static void max7301_set(struct gpio_chip
mutex_unlock(&ts->lock);
}

+static void max7301_set_block(struct gpio_chip *chip, unsigned long mask,
+ unsigned long values)
+{
+ struct max7301 *ts = container_of(chip, struct max7301, chip);
+ unsigned long changes;
+ int i;
+
+ mutex_lock(&ts->lock);
+
+ changes = (ts->out_level ^ (values << 4)) & (mask << 4);
+ ts->out_level ^= changes;
+
+ for (i = 0; i < 4; i++) {
+ if ((changes >> (i * 8 + 4)) & 0xFF) /* i/o only on change */
+ ts->write(ts->dev, 0x44 + i * 8,
+ (ts->out_level >> (i * 8 + 4)) & 0xFF);
+ }
+
+ mutex_unlock(&ts->lock);
+}
+
int __max730x_probe(struct max7301 *ts)
{
struct device *dev = ts->dev;
@@ -184,8 +243,10 @@ int __max730x_probe(struct max7301 *ts)

ts->chip.direction_input = max7301_direction_input;
ts->chip.get = max7301_get;
+ ts->chip.get_block = max7301_get_block;
ts->chip.direction_output = max7301_direction_output;
ts->chip.set = max7301_set;
+ ts->chip.set_block = max7301_set_block;

ts->chip.ngpio = PIN_NUMBER;
ts->chip.can_sleep = 1;
--- linux-2.6.orig/drivers/gpio/gpio-max732x.c
+++ linux-2.6/drivers/gpio/gpio-max732x.c
@@ -219,6 +219,63 @@ out:
mutex_unlock(&chip->lock);
}

+static unsigned long max732x_gpio_get_block(struct gpio_chip *gc,
+ unsigned long mask)
+{
+ struct max732x_chip *chip;
+ uint8_t lo = 0;
+ uint8_t hi = 0;
+ int ret;
+
+ chip = container_of(gc, struct max732x_chip, gpio_chip);
+
+ if (mask & 0xFF) {
+ ret = max732x_readb(chip, is_group_a(chip, 0), &lo);
+ if (ret < 0)
+ return 0;
+ }
+ if (mask & 0xFF00) {
+ ret = max732x_readb(chip, is_group_a(chip, 8), &hi);
+ if (ret < 0)
+ return 0;
+ }
+
+ return (((unsigned long)hi << 8) | lo) & mask;
+}
+
+static void max732x_gpio_set_block(struct gpio_chip *gc, unsigned long mask,
+ unsigned long values)
+{
+ struct max732x_chip *chip;
+ uint8_t reg_out;
+ uint8_t lo_mask = mask & 0xFF;
+ uint8_t hi_mask = (mask >> 8) & 0xFF;
+ int ret;
+
+ chip = container_of(gc, struct max732x_chip, gpio_chip);
+
+ mutex_lock(&chip->lock);
+
+ if (lo_mask) {
+ reg_out = (chip->reg_out[0] & ~lo_mask) | (values & lo_mask);
+ ret = max732x_writeb(chip, is_group_a(chip, 0), reg_out);
+ if (ret < 0)
+ goto out;
+ chip->reg_out[0] = reg_out;
+ }
+ if (hi_mask) {
+ reg_out = (chip->reg_out[1] & ~hi_mask) |
+ ((values >> 8) & hi_mask);
+ ret = max732x_writeb(chip, is_group_a(chip, 8), reg_out);
+ if (ret < 0)
+ goto out;
+ chip->reg_out[1] = reg_out;
+ }
+
+out:
+ mutex_unlock(&chip->lock);
+}
+
static int max732x_gpio_direction_input(struct gpio_chip *gc, unsigned off)
{
struct max732x_chip *chip;
@@ -562,8 +619,10 @@ static int max732x_setup_gpio(struct max
if (chip->dir_output) {
gc->direction_output = max732x_gpio_direction_output;
gc->set = max732x_gpio_set_value;
+ gc->set_block = max732x_gpio_set_block;
}
gc->get = max732x_gpio_get_value;
+ gc->get_block = max732x_gpio_get_block;
gc->can_sleep = 1;

gc->base = gpio_start;
--- linux-2.6.orig/drivers/gpio/gpio-mc33880.c
+++ linux-2.6/drivers/gpio/gpio-mc33880.c
@@ -80,6 +80,21 @@ static void mc33880_set(struct gpio_chip
mutex_unlock(&mc->lock);
}

+static void mc33880_set_block(struct gpio_chip *chip, unsigned long mask,
+ unsigned long values)
+{
+ struct mc33880 *mc = container_of(chip, struct mc33880, chip);
+
+ mutex_lock(&mc->lock);
+
+ mc->port_config &= ~mask;
+ mc->port_config |= values & mask;
+
+ mc33880_write_config(mc);
+
+ mutex_unlock(&mc->lock);
+}
+
static int mc33880_probe(struct spi_device *spi)
{
struct mc33880 *mc;
@@ -113,6 +128,7 @@ static int mc33880_probe(struct spi_devi

mc->chip.label = DRIVER_NAME,
mc->chip.set = mc33880_set;
+ mc->chip.set_block = mc33880_set_block;
mc->chip.base = pdata->base;
mc->chip.ngpio = PIN_NUMBER;
mc->chip.can_sleep = 1;
--- linux-2.6.orig/drivers/gpio/gpio-ml-ioh.c
+++ linux-2.6/drivers/gpio/gpio-ml-ioh.c
@@ -127,6 +127,31 @@ static int ioh_gpio_get(struct gpio_chip
return ioread32(&chip->reg->regs[chip->ch].pi) & (1 << nr);
}

+static void ioh_gpio_set_block(struct gpio_chip *gpio, unsigned long mask,
+ unsigned long values)
+{
+ u32 reg_val;
+ struct ioh_gpio *chip = container_of(gpio, struct ioh_gpio, gpio);
+ unsigned long flags;
+
+ spin_lock_irqsave(&chip->spinlock, flags);
+ reg_val = ioread32(&chip->reg->regs[chip->ch].po);
+
+ reg_val &= ~mask;
+ reg_val |= values & mask;
+
+ iowrite32(reg_val, &chip->reg->regs[chip->ch].po);
+ spin_unlock_irqrestore(&chip->spinlock, flags);
+}
+
+static unsigned long ioh_gpio_get_block(struct gpio_chip *gpio,
+ unsigned long mask)
+{
+ struct ioh_gpio *chip = container_of(gpio, struct ioh_gpio, gpio);
+
+ return ioread32(&chip->reg->regs[chip->ch].pi) & mask;
+}
+
static int ioh_gpio_direction_output(struct gpio_chip *gpio, unsigned nr,
int val)
{
@@ -237,8 +262,10 @@ static void ioh_gpio_setup(struct ioh_gp
gpio->owner = THIS_MODULE;
gpio->direction_input = ioh_gpio_direction_input;
gpio->get = ioh_gpio_get;
+ gpio->get_block = ioh_gpio_get_block;
gpio->direction_output = ioh_gpio_direction_output;
gpio->set = ioh_gpio_set;
+ gpio->set_block = ioh_gpio_set_block;
gpio->dbg_show = NULL;
gpio->base = -1;
gpio->ngpio = num_port;
--- linux-2.6.orig/drivers/gpio/gpio-mm-lantiq.c
+++ linux-2.6/drivers/gpio/gpio-mm-lantiq.c
@@ -73,6 +73,27 @@ static void ltq_mm_set(struct gpio_chip
}

/**
+ * ltq_mm_set_block() - gpio_chip->set_block - set gpios simultaneously.
+ * @gc: Pointer to gpio_chip device structure.
+ * @mask: Bit map of masked GPIOs in this gpio_chip.
+ * @values: Values to be written to the specified signals.
+ *
+ * Set the shadow values and call ltq_mm_apply.
+ */
+static void ltq_mm_set_block(struct gpio_chip *gc, unsigned long mask,
+ unsigned long values)
+{
+ struct of_mm_gpio_chip *mm_gc = to_of_mm_gpio_chip(gc);
+ struct ltq_mm *chip =
+ container_of(mm_gc, struct ltq_mm, mmchip);
+
+ chip->shadow &= ~mask;
+ chip->shadow |= values & mask;
+
+ ltq_mm_apply(chip);
+}
+
+/**
* ltq_mm_dir_out() - gpio_chip->dir_out - set gpio direction.
* @gc: Pointer to gpio_chip device structure.
* @gpio: GPIO signal number.
@@ -122,6 +143,7 @@ static int ltq_mm_probe(struct platform_
chip->mmchip.gc.label = "gpio-mm-ltq";
chip->mmchip.gc.direction_output = ltq_mm_dir_out;
chip->mmchip.gc.set = ltq_mm_set;
+ chip->mmchip.gc.set_block = ltq_mm_set_block;
chip->mmchip.save_regs = ltq_mm_save_regs;

/* store the shadow value if one was passed by the devicetree */
--- linux-2.6.orig/drivers/gpio/gpio-mpc5200.c
+++ linux-2.6/drivers/gpio/gpio-mpc5200.c
@@ -24,6 +24,7 @@
#include <linux/io.h>
#include <linux/of_platform.h>
#include <linux/module.h>
+#include <linux/bitrev.h>

#include <asm/gpio.h>
#include <asm/mpc52xx.h>
@@ -97,6 +98,35 @@ mpc52xx_wkup_gpio_set(struct gpio_chip *
pr_debug("%s: gpio: %d val: %d\n", __func__, gpio, val);
}

+static unsigned long mpc52xx_wkup_gpio_get_block(struct gpio_chip *gc,
+ unsigned long mask)
+{
+ struct of_mm_gpio_chip *mm_gc = to_of_mm_gpio_chip(gc);
+ struct mpc52xx_gpio_wkup __iomem *regs = mm_gc->regs;
+
+ return bitrev8(in_8(&regs->wkup_ival)) & mask;
+}
+
+static void
+mpc52xx_wkup_gpio_set_block(struct gpio_chip *gc, unsigned long mask,
+ unsigned long values)
+{
+ struct of_mm_gpio_chip *mm_gc = to_of_mm_gpio_chip(gc);
+ struct mpc52xx_gpiochip *chip = container_of(mm_gc,
+ struct mpc52xx_gpiochip, mmchip);
+ struct mpc52xx_gpio_wkup __iomem *regs = mm_gc->regs;
+ unsigned long flags;
+
+ spin_lock_irqsave(&gpio_lock, flags);
+
+ chip->shadow_dvo &= ~bitrev8(mask);
+ chip->shadow_dvo |= bitrev8(values & mask);
+
+ out_8(&regs->wkup_dvo, chip->shadow_dvo);
+
+ spin_unlock_irqrestore(&gpio_lock, flags);
+}
+
static int mpc52xx_wkup_gpio_dir_in(struct gpio_chip *gc, unsigned int gpio)
{
struct of_mm_gpio_chip *mm_gc = to_of_mm_gpio_chip(gc);
@@ -166,6 +196,8 @@ static int mpc52xx_wkup_gpiochip_probe(s
gc->direction_output = mpc52xx_wkup_gpio_dir_out;
gc->get = mpc52xx_wkup_gpio_get;
gc->set = mpc52xx_wkup_gpio_set;
+ gc->get_block = mpc52xx_wkup_gpio_get_block;
+ gc->set_block = mpc52xx_wkup_gpio_set_block;

ret = of_mm_gpiochip_add(ofdev->dev.of_node, &chip->mmchip);
if (ret)
@@ -256,6 +288,36 @@ mpc52xx_simple_gpio_set(struct gpio_chip
pr_debug("%s: gpio: %d val: %d\n", __func__, gpio, val);
}

+static unsigned long mpc52xx_simple_gpio_get_block(struct gpio_chip *gc,
+ unsigned long mask)
+{
+ struct of_mm_gpio_chip *mm_gc = to_of_mm_gpio_chip(gc);
+ struct mpc52xx_gpio __iomem *regs = mm_gc->regs;
+
+ return bitrev32(in_be32(&regs->simple_ival)) & mask;
+}
+
+static void
+mpc52xx_simple_gpio_set_block(struct gpio_chip *gc, unsigned long mask,
+ unsigned long values)
+{
+ struct of_mm_gpio_chip *mm_gc = to_of_mm_gpio_chip(gc);
+ struct mpc52xx_gpiochip *chip = container_of(mm_gc,
+ struct mpc52xx_gpiochip,
+ mmchip);
+ struct mpc52xx_gpio __iomem *regs = mm_gc->regs;
+ unsigned long flags;
+
+ spin_lock_irqsave(&gpio_lock, flags);
+
+ chip->shadow_dvo &= ~bitrev32(mask);
+ chip->shadow_dvo |= bitrev32(values & mask);
+
+ out_be32(&regs->simple_dvo, chip->shadow_dvo);
+
+ spin_unlock_irqrestore(&gpio_lock, flags);
+}
+
static int mpc52xx_simple_gpio_dir_in(struct gpio_chip *gc, unsigned int gpio)
{
struct of_mm_gpio_chip *mm_gc = to_of_mm_gpio_chip(gc);
@@ -326,6 +388,8 @@ static int mpc52xx_simple_gpiochip_probe
gc->direction_output = mpc52xx_simple_gpio_dir_out;
gc->get = mpc52xx_simple_gpio_get;
gc->set = mpc52xx_simple_gpio_set;
+ gc->get_block = mpc52xx_simple_gpio_get_block;
+ gc->set_block = mpc52xx_simple_gpio_set_block;

ret = of_mm_gpiochip_add(ofdev->dev.of_node, &chip->mmchip);
if (ret)
--- linux-2.6.orig/drivers/gpio/gpio-mpc8xxx.c
+++ linux-2.6/drivers/gpio/gpio-mpc8xxx.c
@@ -17,6 +17,7 @@
#include <linux/gpio.h>
#include <linux/slab.h>
#include <linux/irq.h>
+#include <linux/bitrev.h>

#define MPC8XXX_GPIO_PINS 32

@@ -100,6 +101,43 @@ static void mpc8xxx_gpio_set(struct gpio
spin_unlock_irqrestore(&mpc8xxx_gc->lock, flags);
}

+static unsigned long mpc8572_gpio_get_block(struct gpio_chip *gc,
+ unsigned long mask)
+{
+ u32 val;
+ struct of_mm_gpio_chip *mm = to_of_mm_gpio_chip(gc);
+ struct mpc8xxx_gpio_chip *mpc8xxx_gc = to_mpc8xxx_gpio_chip(mm);
+
+ val = in_be32(mm->regs + GPIO_DAT) & ~in_be32(mm->regs + GPIO_DIR);
+
+ return bitrev32(val | mpc8xxx_gc->data) & mask;
+}
+
+static unsigned long mpc8xxx_gpio_get_block(struct gpio_chip *gc,
+ unsigned long mask)
+{
+ struct of_mm_gpio_chip *mm = to_of_mm_gpio_chip(gc);
+
+ return bitrev32(in_be32(mm->regs + GPIO_DAT)) & mask;
+}
+
+static void mpc8xxx_gpio_set_block(struct gpio_chip *gc, unsigned long mask,
+ unsigned long values)
+{
+ struct of_mm_gpio_chip *mm = to_of_mm_gpio_chip(gc);
+ struct mpc8xxx_gpio_chip *mpc8xxx_gc = to_mpc8xxx_gpio_chip(mm);
+ unsigned long flags;
+
+ spin_lock_irqsave(&mpc8xxx_gc->lock, flags);
+
+ mpc8xxx_gc->data &= ~bitrev32(mask);
+ mpc8xxx_gc->data |= bitrev32(values | mask);
+
+ out_be32(mm->regs + GPIO_DAT, mpc8xxx_gc->data);
+
+ spin_unlock_irqrestore(&mpc8xxx_gc->lock, flags);
+}
+
static int mpc8xxx_gpio_dir_in(struct gpio_chip *gc, unsigned int gpio)
{
struct of_mm_gpio_chip *mm = to_of_mm_gpio_chip(gc);
@@ -340,6 +378,9 @@ static void __init mpc8xxx_add_controlle
gc->get = of_device_is_compatible(np, "fsl,mpc8572-gpio") ?
mpc8572_gpio_get : mpc8xxx_gpio_get;
gc->set = mpc8xxx_gpio_set;
+ gc->get_block = of_device_is_compatible(np, "fsl,mpc8572-gpio") ?
+ mpc8572_gpio_get_block : mpc8xxx_gpio_get_block;
+ gc->set_block = mpc8xxx_gpio_set_block;
gc->to_irq = mpc8xxx_gpio_to_irq;

ret = of_mm_gpiochip_add(np, mm_gc);
--- linux-2.6.orig/drivers/gpio/gpio-pca953x.c
+++ linux-2.6/drivers/gpio/gpio-pca953x.c
@@ -302,6 +302,68 @@ exit:
mutex_unlock(&chip->i2c_lock);
}

+static unsigned long pca953x_gpio_get_block(struct gpio_chip *gc,
+ unsigned long mask)
+{
+ struct pca953x_chip *chip;
+ u32 reg_val;
+ int ret, offset = 0;
+
+ chip = container_of(gc, struct pca953x_chip, gpio_chip);
+
+ mutex_lock(&chip->i2c_lock);
+ switch (chip->chip_type) {
+ case PCA953X_TYPE:
+ offset = PCA953X_INPUT;
+ break;
+ case PCA957X_TYPE:
+ offset = PCA957X_IN;
+ break;
+ }
+ ret = pca953x_read_reg(chip, offset, &reg_val);
+ mutex_unlock(&chip->i2c_lock);
+ if (ret < 0) {
+ /* NOTE: diagnostic already emitted; that's all we should
+ * do unless gpio_*_value_cansleep() calls become different
+ * from their nonsleeping siblings (and report faults).
+ */
+ return 0;
+ }
+
+ return reg_val & mask;
+}
+
+static void pca953x_gpio_set_block(struct gpio_chip *gc, unsigned long mask,
+ unsigned long values)
+{
+ struct pca953x_chip *chip;
+ u32 reg_val;
+ int ret, offset = 0;
+
+ chip = container_of(gc, struct pca953x_chip, gpio_chip);
+
+ mutex_lock(&chip->i2c_lock);
+
+ reg_val = chip->reg_output & ~mask;
+ reg_val |= values & mask;
+
+ switch (chip->chip_type) {
+ case PCA953X_TYPE:
+ offset = PCA953X_OUTPUT;
+ break;
+ case PCA957X_TYPE:
+ offset = PCA957X_OUT;
+ break;
+ }
+ ret = pca953x_write_reg(chip, offset, reg_val);
+ if (ret)
+ goto exit;
+
+ chip->reg_output = reg_val;
+exit:
+ mutex_unlock(&chip->i2c_lock);
+}
+
static void pca953x_setup_gpio(struct pca953x_chip *chip, int gpios)
{
struct gpio_chip *gc;
@@ -312,6 +374,8 @@ static void pca953x_setup_gpio(struct pc
gc->direction_output = pca953x_gpio_direction_output;
gc->get = pca953x_gpio_get_value;
gc->set = pca953x_gpio_set_value;
+ gc->get_block = pca953x_gpio_get_block;
+ gc->set_block = pca953x_gpio_set_block;
gc->can_sleep = 1;

gc->base = chip->gpio_start;
--- linux-2.6.orig/drivers/gpio/gpio-pcf857x.c
+++ linux-2.6/drivers/gpio/gpio-pcf857x.c
@@ -158,6 +158,28 @@ static void pcf857x_set(struct gpio_chip
pcf857x_output(chip, offset, value);
}

+static unsigned long pcf857x_get_block(struct gpio_chip *chip,
+ unsigned long mask)
+{
+ struct pcf857x *gpio = container_of(chip, struct pcf857x, chip);
+ int value;
+
+ value = gpio->read(gpio->client);
+ return (value < 0) ? 0 : (value & mask);
+}
+
+static void pcf857x_set_block(struct gpio_chip *chip, unsigned long mask,
+ unsigned long values)
+{
+ struct pcf857x *gpio = container_of(chip, struct pcf857x, chip);
+
+ mutex_lock(&gpio->lock);
+ gpio->out &= ~mask;
+ gpio->out |= values & mask;
+ gpio->write(gpio->client, gpio->out);
+ mutex_unlock(&gpio->lock);
+}
+
/*-------------------------------------------------------------------------*/

static int pcf857x_to_irq(struct gpio_chip *chip, unsigned offset)
@@ -280,6 +302,8 @@ static int pcf857x_probe(struct i2c_clie
gpio->chip.owner = THIS_MODULE;
gpio->chip.get = pcf857x_get;
gpio->chip.set = pcf857x_set;
+ gpio->chip.get_block = pcf857x_get_block;
+ gpio->chip.set_block = pcf857x_set_block;
gpio->chip.direction_input = pcf857x_input;
gpio->chip.direction_output = pcf857x_output;
gpio->chip.ngpio = id->driver_data;
--- linux-2.6.orig/drivers/gpio/gpio-pch.c
+++ linux-2.6/drivers/gpio/gpio-pch.c
@@ -122,6 +122,23 @@ static void pch_gpio_set(struct gpio_chi
spin_unlock_irqrestore(&chip->spinlock, flags);
}

+static void pch_gpio_set_block(struct gpio_chip *gpio, unsigned long mask,
+ unsigned long values)
+{
+ u32 reg_val;
+ struct pch_gpio *chip = container_of(gpio, struct pch_gpio, gpio);
+ unsigned long flags;
+
+ spin_lock_irqsave(&chip->spinlock, flags);
+ reg_val = ioread32(&chip->reg->po);
+
+ reg_val &= ~mask;
+ reg_val |= values & mask;
+
+ iowrite32(reg_val, &chip->reg->po);
+ spin_unlock_irqrestore(&chip->spinlock, flags);
+}
+
static int pch_gpio_get(struct gpio_chip *gpio, unsigned nr)
{
struct pch_gpio *chip = container_of(gpio, struct pch_gpio, gpio);
@@ -129,6 +146,14 @@ static int pch_gpio_get(struct gpio_chip
return ioread32(&chip->reg->pi) & (1 << nr);
}

+static unsigned long pch_gpio_get_block(struct gpio_chip *gpio,
+ unsigned long mask)
+{
+ struct pch_gpio *chip = container_of(gpio, struct pch_gpio, gpio);
+
+ return ioread32(&chip->reg->pi) & mask;
+}
+
static int pch_gpio_direction_output(struct gpio_chip *gpio, unsigned nr,
int val)
{
@@ -219,8 +244,10 @@ static void pch_gpio_setup(struct pch_gp
gpio->owner = THIS_MODULE;
gpio->direction_input = pch_gpio_direction_input;
gpio->get = pch_gpio_get;
+ gpio->get_block = pch_gpio_get_block;
gpio->direction_output = pch_gpio_direction_output;
gpio->set = pch_gpio_set;
+ gpio->set_block = pch_gpio_set_block;
gpio->dbg_show = NULL;
gpio->base = -1;
gpio->ngpio = gpio_pins[chip->ioh];
--- linux-2.6.orig/drivers/gpio/gpio-pl061.c
+++ linux-2.6/drivers/gpio/gpio-pl061.c
@@ -118,6 +118,21 @@ static void pl061_set_value(struct gpio_
writeb(!!value << offset, chip->base + (1 << (offset + 2)));
}

+static unsigned long pl061_get_block(struct gpio_chip *gc, unsigned long mask)
+{
+ struct pl061_gpio *chip = container_of(gc, struct pl061_gpio, gc);
+
+ return !!readb(chip->base + (mask << 2));
+}
+
+static void pl061_set_block(struct gpio_chip *gc, unsigned long mask,
+ unsigned long values)
+{
+ struct pl061_gpio *chip = container_of(gc, struct pl061_gpio, gc);
+
+ writeb(values & mask, chip->base + (mask << 2));
+}
+
static int pl061_to_irq(struct gpio_chip *gc, unsigned offset)
{
struct pl061_gpio *chip = container_of(gc, struct pl061_gpio, gc);
@@ -246,6 +261,8 @@ static int pl061_probe(struct amba_devic
chip->gc.direction_output = pl061_direction_output;
chip->gc.get = pl061_get_value;
chip->gc.set = pl061_set_value;
+ chip->gc.get_block = pl061_get_block;
+ chip->gc.set_block = pl061_set_block;
chip->gc.to_irq = pl061_to_irq;
chip->gc.ngpio = PL061_GPIO_NR;
chip->gc.label = dev_name(dev);
--- linux-2.6.orig/drivers/gpio/gpio-sa1100.c
+++ linux-2.6/drivers/gpio/gpio-sa1100.c
@@ -27,6 +27,24 @@ static void sa1100_gpio_set(struct gpio_
GPCR = GPIO_GPIO(offset);
}

+static unsigned long sa1100_gpio_get_block(struct gpio_chip *chip,
+ unsigned long mask)
+{
+ return GPLR & mask;
+}
+
+static void sa1100_gpio_set_block(struct gpio_chip *chip, unsigned long mask,
+ unsigned long values)
+{
+ unsigned long set_bits = values & mask;
+ unsigned long clr_bits = ~values & mask;
+
+ if (set_bits)
+ GPSR = set_bits;
+ if (clr_bits)
+ GPCR = clr_bits;
+}
+
static int sa1100_direction_input(struct gpio_chip *chip, unsigned offset)
{
unsigned long flags;
@@ -59,6 +77,8 @@ static struct gpio_chip sa1100_gpio_chip
.direction_output = sa1100_direction_output,
.set = sa1100_gpio_set,
.get = sa1100_gpio_get,
+ .set_block = sa1100_gpio_set_block,
+ .get_block = sa1100_gpio_get_block,
.to_irq = sa1100_to_irq,
.base = 0,
.ngpio = GPIO_MAX + 1,
--- linux-2.6.orig/drivers/gpio/gpio-samsung.c
+++ linux-2.6/drivers/gpio/gpio-samsung.c
@@ -862,6 +862,33 @@ static int samsung_gpiolib_get(struct gp
return val;
}

+static void samsung_gpiolib_set_block(struct gpio_chip *chip,
+ unsigned long mask,
+ unsigned long values)
+{
+ struct samsung_gpio_chip *ourchip = to_samsung_gpio(chip);
+ void __iomem *base = ourchip->base;
+ unsigned long flags;
+ unsigned long dat;
+
+ samsung_gpio_lock(ourchip, flags);
+
+ dat = __raw_readl(base + 0x04);
+ dat &= ~mask;
+ dat |= values & mask;
+ __raw_writel(dat, base + 0x04);
+
+ samsung_gpio_unlock(ourchip, flags);
+}
+
+static unsigned long samsung_gpiolib_get_block(struct gpio_chip *chip,
+ unsigned long mask)
+{
+ struct samsung_gpio_chip *ourchip = to_samsung_gpio(chip);
+
+ return __raw_readl(ourchip->base + 0x04) & mask;
+}
+
/*
* CONFIG_S3C_GPIO_TRACK enables the tracking of the s3c specific gpios
* for use with the configuration calls, and other parts of the s3c gpiolib
@@ -919,6 +946,10 @@ static void __init samsung_gpiolib_add(s
gc->set = samsung_gpiolib_set;
if (!gc->get)
gc->get = samsung_gpiolib_get;
+ if (!gc->set_block)
+ gc->set_block = samsung_gpiolib_set_block;
+ if (!gc->get_block)
+ gc->get_block = samsung_gpiolib_get_block;

#ifdef CONFIG_PM
if (chip->pm != NULL) {
--- linux-2.6.orig/drivers/gpio/gpio-twl6040.c
+++ linux-2.6/drivers/gpio/gpio-twl6040.c
@@ -46,6 +46,19 @@ static int twl6040gpo_get(struct gpio_ch
return (ret >> offset) & 1;
}

+static unsigned long twl6040gpo_get_block(struct gpio_chip *chip,
+ unsigned long mask)
+{
+ struct twl6040 *twl6040 = dev_get_drvdata(chip->dev->parent);
+ int ret = 0;
+
+ ret = twl6040_reg_read(twl6040, TWL6040_REG_GPOCTL);
+ if (ret < 0)
+ return 0;
+
+ return ret & mask;
+}
+
static int twl6040gpo_direction_out(struct gpio_chip *chip, unsigned offset,
int value)
{
@@ -71,12 +84,31 @@ static void twl6040gpo_set(struct gpio_c
twl6040_reg_write(twl6040, TWL6040_REG_GPOCTL, gpoctl);
}

+static void twl6040gpo_set_block(struct gpio_chip *chip, unsigned long mask,
+ unsigned long values)
+{
+ struct twl6040 *twl6040 = dev_get_drvdata(chip->dev->parent);
+ int ret;
+ u8 gpoctl;
+
+ ret = twl6040_reg_read(twl6040, TWL6040_REG_GPOCTL);
+ if (ret < 0)
+ return;
+
+ gpoctl = ret & ~mask;
+ gpoctl |= values & mask;
+
+ twl6040_reg_write(twl6040, TWL6040_REG_GPOCTL, gpoctl);
+}
+
static struct gpio_chip twl6040gpo_chip = {
.label = "twl6040",
.owner = THIS_MODULE,
.get = twl6040gpo_get,
+ .get_block = twl6040gpo_get_block,
.direction_output = twl6040gpo_direction_out,
.set = twl6040gpo_set,
+ .set_block = twl6040gpo_set_block,
.can_sleep = 1,
};

--- linux-2.6.orig/drivers/gpio/gpio-ucb1400.c
+++ linux-2.6/drivers/gpio/gpio-ucb1400.c
@@ -45,6 +45,27 @@ static void ucb1400_gpio_set(struct gpio
ucb1400_gpio_set_value(gpio->ac97, off, val);
}

+static unsigned long ucb1400_gpio_get_block(struct gpio_chip *gc,
+ unsigned long mask)
+{
+ struct ucb1400_gpio *gpio;
+ gpio = container_of(gc, struct ucb1400_gpio, gc);
+ return ucb1400_reg_read(gpio->ac97, UCB_IO_DATA) & mask;
+}
+
+static void ucb1400_gpio_set_block(struct gpio_chip *gc, unsigned long mask,
+ unsigned long values)
+{
+ struct ucb1400_gpio *gpio;
+ u16 tmp;
+ gpio = container_of(gc, struct ucb1400_gpio, gc);
+
+ tmp = ucb1400_reg_read(gpio->ac97, UCB_IO_DATA) & ~mask;
+ tmp |= values & mask;
+
+ ucb1400_reg_write(gpio->ac97, UCB_IO_DATA, tmp);
+}
+
static int ucb1400_gpio_probe(struct platform_device *dev)
{
struct ucb1400_gpio *ucb = dev->dev.platform_data;
@@ -66,6 +87,8 @@ static int ucb1400_gpio_probe(struct pla
ucb->gc.direction_output = ucb1400_gpio_dir_out;
ucb->gc.get = ucb1400_gpio_get;
ucb->gc.set = ucb1400_gpio_set;
+ ucb->gc.get_block = ucb1400_gpio_get_block;
+ ucb->gc.set_block = ucb1400_gpio_set_block;
ucb->gc.can_sleep = 1;

err = gpiochip_add(&ucb->gc);
--- linux-2.6.orig/drivers/gpio/gpio-vt8500.c
+++ linux-2.6/drivers/gpio/gpio-vt8500.c
@@ -211,6 +211,28 @@ static void vt8500_gpio_set_value(struct
writel_relaxed(val, vt8500_chip->base + vt8500_chip->regs->data_out);
}

+static unsigned long vt8500_gpio_get_block(struct gpio_chip *chip,
+ unsigned long mask)
+{
+ struct vt8500_gpio_chip *vt8500_chip = to_vt8500(chip);
+
+ return readl_relaxed(vt8500_chip->base + vt8500_chip->regs->data_in) &
+ mask;
+}
+
+static void vt8500_gpio_set_block(struct gpio_chip *chip, unsigned long mask,
+ unsigned long values)
+{
+ struct vt8500_gpio_chip *vt8500_chip = to_vt8500(chip);
+
+ u32 val = readl_relaxed(vt8500_chip->base +
+ vt8500_chip->regs->data_out);
+ val &= ~mask;
+ val |= values & mask;
+
+ writel_relaxed(val, vt8500_chip->base + vt8500_chip->regs->data_out);
+}
+
static int vt8500_of_xlate(struct gpio_chip *gc,
const struct of_phandle_args *gpiospec, u32 *flags)
{
@@ -253,6 +275,8 @@ static int vt8500_add_chips(struct platf
chip->direction_output = vt8500_gpio_direction_output;
chip->get = vt8500_gpio_get_value;
chip->set = vt8500_gpio_set_value;
+ chip->get_block = vt8500_gpio_get_block;
+ chip->set_block = vt8500_gpio_set_block;
chip->can_sleep = 0;
chip->base = pin_cnt;
chip->ngpio = data->banks[i].ngpio;
--- linux-2.6.orig/drivers/gpio/gpio-xilinx.c
+++ linux-2.6/drivers/gpio/gpio-xilinx.c
@@ -49,6 +49,21 @@ static int xgpio_get(struct gpio_chip *g
}

/**
+ * xgpio_get_block - Read a block of specified signals of the GPIO device.
+ * @gc: Pointer to gpio_chip device structure.
+ * @mask: Bit mask (bit 0 == 0th GPIO) for GPIOs to get
+ *
+ * This function reads a block of specified signal of the GPIO device, returned
+ * as a bit mask, each bit representing a GPIO
+ */
+static unsigned long xgpio_get_block(struct gpio_chip *gc, unsigned long mask)
+{
+ struct of_mm_gpio_chip *mm_gc = to_of_mm_gpio_chip(gc);
+
+ return in_be32(mm_gc->regs + XGPIO_DATA_OFFSET) & mask;
+}
+
+/**
* xgpio_set - Write the specified signal of the GPIO device.
* @gc: Pointer to gpio_chip device structure.
* @gpio: GPIO signal number.
@@ -77,6 +92,33 @@ static void xgpio_set(struct gpio_chip *
}

/**
+ * xgpio_set_block - Write a block of specified signals of the GPIO device.
+ * @gc: Pointer to gpio_chip device structure.
+ * @mask: Bit mask (bit 0 == 0th GPIO) for GPIOs to set
+ * @values: Bit mapped values
+ *
+ * This function writes the specified values in to the specified signals of the
+ * GPIO device.
+ */
+static void xgpio_set_block(struct gpio_chip *gc, unsigned long mask,
+ unsigned long values)
+{
+ unsigned long flags;
+ struct of_mm_gpio_chip *mm_gc = to_of_mm_gpio_chip(gc);
+ struct xgpio_instance *chip =
+ container_of(mm_gc, struct xgpio_instance, mmchip);
+
+ spin_lock_irqsave(&chip->gpio_lock, flags);
+
+ chip->gpio_state &= ~mask;
+ chip->gpio_state |= mask & values;
+
+ out_be32(mm_gc->regs + XGPIO_DATA_OFFSET, chip->gpio_state);
+
+ spin_unlock_irqrestore(&chip->gpio_lock, flags);
+}
+
+/**
* xgpio_dir_in - Set the direction of the specified GPIO signal as input.
* @gc: Pointer to gpio_chip device structure.
* @gpio: GPIO signal number.
@@ -195,6 +237,8 @@ static int xgpio_of_probe(struct device_
chip->mmchip.gc.direction_output = xgpio_dir_out;
chip->mmchip.gc.get = xgpio_get;
chip->mmchip.gc.set = xgpio_set;
+ chip->mmchip.gc.get_block = xgpio_get_block;
+ chip->mmchip.gc.set_block = xgpio_set_block;

chip->mmchip.save_regs = xgpio_save_regs;

--- linux-2.6.orig/drivers/pinctrl/pinctrl-at91.c
+++ linux-2.6/drivers/pinctrl/pinctrl-at91.c
@@ -49,6 +49,7 @@ struct at91_gpio_chip {
struct clk *clock; /* associated clock */
struct irq_domain *domain; /* associated irq domain */
struct at91_pinctrl_mux_ops *ops; /* ops */
+ unsigned long mask_cache; /* cached mask for block gpio */
};

#define to_at91_gpio_chip(c) container_of(c, struct at91_gpio_chip, chip)
@@ -1124,6 +1125,32 @@ static void at91_gpio_set(struct gpio_ch
writel_relaxed(mask, pio + (val ? PIO_SODR : PIO_CODR));
}

+static unsigned long at91_gpio_get_block(struct gpio_chip *chip,
+ unsigned long mask)
+{
+ struct at91_gpio_chip *at91_gpio = to_at91_gpio_chip(chip);
+ void __iomem *pio = at91_gpio->regbase;
+ u32 pdsr;
+
+ pdsr = readl_relaxed(pio + PIO_PDSR);
+ return pdsr & mask;
+}
+
+static void at91_gpio_set_block(struct gpio_chip *chip, unsigned long mask,
+ unsigned long val)
+{
+ struct at91_gpio_chip *at91_gpio = to_at91_gpio_chip(chip);
+ void __iomem *pio = at91_gpio->regbase;
+
+ /* Do synchronous data output with a single write access */
+ if (mask != at91_gpio->mask_cache) {
+ at91_gpio->mask_cache = mask;
+ writel_relaxed(~mask, pio + PIO_OWDR);
+ writel_relaxed(mask, pio + PIO_OWER);
+ }
+ writel_relaxed(val, pio + PIO_ODSR);
+}
+
static int at91_gpio_direction_output(struct gpio_chip *chip, unsigned offset,
int val)
{
@@ -1434,8 +1461,10 @@ static struct gpio_chip at91_gpio_templa
.free = at91_gpio_free,
.direction_input = at91_gpio_direction_input,
.get = at91_gpio_get,
+ .get_block = at91_gpio_get_block,
.direction_output = at91_gpio_direction_output,
.set = at91_gpio_set,
+ .set_block = at91_gpio_set_block,
.to_irq = at91_gpio_to_irq,
.dbg_show = at91_gpio_dbg_show,
.can_sleep = 0,
--- linux-2.6.orig/drivers/pinctrl/pinctrl-nomadik.c
+++ linux-2.6/drivers/pinctrl/pinctrl-nomadik.c
@@ -1069,6 +1069,40 @@ static void nmk_gpio_set_output(struct g
clk_disable(nmk_chip->clk);
}

+static unsigned long nmk_gpio_get_block(struct gpio_chip *chip,
+ unsigned long mask)
+{
+ struct nmk_gpio_chip *nmk_chip =
+ container_of(chip, struct nmk_gpio_chip, chip);
+ unsigned long values;
+
+ clk_enable(nmk_chip->clk);
+
+ values = readl(nmk_chip->addr + NMK_GPIO_DAT);
+
+ clk_disable(nmk_chip->clk);
+
+ return values & mask;
+}
+
+static void nmk_gpio_set_block(struct gpio_chip *chip, unsigned long mask,
+ unsigned long values)
+{
+ struct nmk_gpio_chip *nmk_chip =
+ container_of(chip, struct nmk_gpio_chip, chip);
+ unsigned long set_bits = values & mask;
+ unsigned long clr_bits = ~values & mask;
+
+ clk_enable(nmk_chip->clk);
+
+ if (set_bits)
+ writel(set_bits, nmk_chip->addr + NMK_GPIO_DATS);
+ if (clr_bits)
+ writel(clr_bits, nmk_chip->addr + NMK_GPIO_DATC);
+
+ clk_disable(nmk_chip->clk);
+}
+
static int nmk_gpio_make_output(struct gpio_chip *chip, unsigned offset,
int val)
{
@@ -1188,8 +1222,10 @@ static struct gpio_chip nmk_gpio_templat
.free = nmk_gpio_free,
.direction_input = nmk_gpio_make_input,
.get = nmk_gpio_get_input,
+ .get_block = nmk_gpio_get_block,
.direction_output = nmk_gpio_make_output,
.set = nmk_gpio_set_output,
+ .set_block = nmk_gpio_set_block,
.to_irq = nmk_gpio_to_irq,
.dbg_show = nmk_gpio_dbg_show,
.can_sleep = 0,
--
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