summaryrefslogtreecommitdiff
path: root/drivers/gpio/gpio-sx150x.c
diff options
context:
space:
mode:
authorLinus Walleij <linus.walleij@linaro.org>2016-04-09 10:52:26 +0200
committerLinus Walleij <linus.walleij@linaro.org>2016-04-14 14:03:25 +0200
commitd17322feecf80152303426dd724577025d1fbd7e (patch)
tree7aac6be363e63bdf0bba70332666d2b759953540 /drivers/gpio/gpio-sx150x.c
parentf30e49f1291bc309865f88126005d526421d7e3a (diff)
gpio: sx150x: move platform data into driver
The sx150x has some platform data definition in <linux/i2c/sx150x.h> but this file is only included from the driver in the whole kernel so move its contents into the driver. Cc: Wei Chen <Wei.Chen@csr.com> Cc: Peter Rosin <peda@axentia.se> Acked-by: Wolfram Sang <wsa@the-dreams.de> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/gpio/gpio-sx150x.c')
-rw-r--r--drivers/gpio/gpio-sx150x.c60
1 files changed, 59 insertions, 1 deletions
diff --git a/drivers/gpio/gpio-sx150x.c b/drivers/gpio/gpio-sx150x.c
index d57e8ad0bfd2..d4501d5f8b8e 100644
--- a/drivers/gpio/gpio-sx150x.c
+++ b/drivers/gpio/gpio-sx150x.c
@@ -25,7 +25,6 @@
#include <linux/irq.h>
#include <linux/mutex.h>
#include <linux/slab.h>
-#include <linux/i2c/sx150x.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/of_irq.h>
@@ -85,6 +84,65 @@ struct sx150x_device_data {
} pri;
};
+/**
+ * struct sx150x_platform_data - config data for SX150x driver
+ * @gpio_base: The index number of the first GPIO assigned to this
+ * GPIO expander. The expander will create a block of
+ * consecutively numbered gpios beginning at the given base,
+ * with the size of the block depending on the model of the
+ * expander chip.
+ * @oscio_is_gpo: If set to true, the driver will configure OSCIO as a GPO
+ * instead of as an oscillator, increasing the size of the
+ * GP(I)O pool created by this expander by one. The
+ * output-only GPO pin will be added at the end of the block.
+ * @io_pullup_ena: A bit-mask which enables or disables the pull-up resistor
+ * for each IO line in the expander. Setting the bit at
+ * position n will enable the pull-up for the IO at
+ * the corresponding offset. For chips with fewer than
+ * 16 IO pins, high-end bits are ignored.
+ * @io_pulldn_ena: A bit-mask which enables-or disables the pull-down
+ * resistor for each IO line in the expander. Setting the
+ * bit at position n will enable the pull-down for the IO at
+ * the corresponding offset. For chips with fewer than
+ * 16 IO pins, high-end bits are ignored.
+ * @io_open_drain_ena: A bit-mask which enables-or disables open-drain
+ * operation for each IO line in the expander. Setting the
+ * bit at position n enables open-drain operation for
+ * the IO at the corresponding offset. Clearing the bit
+ * enables regular push-pull operation for that IO.
+ * For chips with fewer than 16 IO pins, high-end bits
+ * are ignored.
+ * @io_polarity: A bit-mask which enables polarity inversion for each IO line
+ * in the expander. Setting the bit at position n inverts
+ * the polarity of that IO line, while clearing it results
+ * in normal polarity. For chips with fewer than 16 IO pins,
+ * high-end bits are ignored.
+ * @irq_summary: The 'summary IRQ' line to which the GPIO expander's INT line
+ * is connected, via which it reports interrupt events
+ * across all GPIO lines. This must be a real,
+ * pre-existing IRQ line.
+ * Setting this value < 0 disables the irq_chip functionality
+ * of the driver.
+ * @irq_base: The first 'virtual IRQ' line at which our block of GPIO-based
+ * IRQ lines will appear. Similarly to gpio_base, the expander
+ * will create a block of irqs beginning at this number.
+ * This value is ignored if irq_summary is < 0.
+ * @reset_during_probe: If set to true, the driver will trigger a full
+ * reset of the chip at the beginning of the probe
+ * in order to place it in a known state.
+ */
+struct sx150x_platform_data {
+ unsigned gpio_base;
+ bool oscio_is_gpo;
+ u16 io_pullup_ena;
+ u16 io_pulldn_ena;
+ u16 io_open_drain_ena;
+ u16 io_polarity;
+ int irq_summary;
+ unsigned irq_base;
+ bool reset_during_probe;
+};
+
struct sx150x_chip {
struct gpio_chip gpio_chip;
struct i2c_client *client;