diff options
| author | Joakim Tjernlund <joakim.tjernlund@infinera.com> | 2018-06-19 18:22:16 +0200 |
|---|---|---|
| committer | Li Yang <leoyang.li@nxp.com> | 2018-07-24 16:18:22 -0500 |
| commit | 1c0b7df5d333b0bf7159ded5fa8dec49cde715fc (patch) | |
| tree | 15f6049da1f2e20223983075775acd604982e927 /drivers/soc | |
| parent | ce397d215ccd07b8ae3f71db689aedb85d56ab40 (diff) | |
| download | linux-rpi-1c0b7df5d333b0bf7159ded5fa8dec49cde715fc.tar.gz linux-rpi-1c0b7df5d333b0bf7159ded5fa8dec49cde715fc.tar.bz2 linux-rpi-1c0b7df5d333b0bf7159ded5fa8dec49cde715fc.zip | |
soc: fsl: qe: gpio: Add qe_gpio_set_multiple
This cousin to gpio-mpc8xxx was lacking a multiple pins method,
add one.
Signed-off-by: Joakim Tjernlund <joakim.tjernlund@infinera.com>
Reviewed-by: Qiang Zhao <qiang.zhao@nxp.com>
Signed-off-by: Li Yang <leoyang.li@nxp.com>
Diffstat (limited to 'drivers/soc')
| -rw-r--r-- | drivers/soc/fsl/qe/gpio.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/drivers/soc/fsl/qe/gpio.c b/drivers/soc/fsl/qe/gpio.c index 3b27075c21a7..819bed0f5667 100644 --- a/drivers/soc/fsl/qe/gpio.c +++ b/drivers/soc/fsl/qe/gpio.c @@ -83,6 +83,33 @@ static void qe_gpio_set(struct gpio_chip *gc, unsigned int gpio, int val) spin_unlock_irqrestore(&qe_gc->lock, flags); } +static void qe_gpio_set_multiple(struct gpio_chip *gc, + unsigned long *mask, unsigned long *bits) +{ + struct of_mm_gpio_chip *mm_gc = to_of_mm_gpio_chip(gc); + struct qe_gpio_chip *qe_gc = gpiochip_get_data(gc); + struct qe_pio_regs __iomem *regs = mm_gc->regs; + unsigned long flags; + int i; + + spin_lock_irqsave(&qe_gc->lock, flags); + + for (i = 0; i < gc->ngpio; i++) { + if (*mask == 0) + break; + if (__test_and_clear_bit(i, mask)) { + if (test_bit(i, bits)) + qe_gc->cpdata |= (1U << (QE_PIO_PINS - 1 - i)); + else + qe_gc->cpdata &= ~(1U << (QE_PIO_PINS - 1 - i)); + } + } + + out_be32(®s->cpdata, qe_gc->cpdata); + + spin_unlock_irqrestore(&qe_gc->lock, flags); +} + static int qe_gpio_dir_in(struct gpio_chip *gc, unsigned int gpio) { struct of_mm_gpio_chip *mm_gc = to_of_mm_gpio_chip(gc); @@ -298,6 +325,7 @@ static int __init qe_add_gpiochips(void) gc->direction_output = qe_gpio_dir_out; gc->get = qe_gpio_get; gc->set = qe_gpio_set; + gc->set_multiple = qe_gpio_set_multiple; ret = of_mm_gpiochip_add_data(np, mm_gc, qe_gc); if (ret) |