On Tue, Aug 24, 2021 at 3:46 PM Bharat Kumar Reddy Gooty bharat.gooty@broadcom.com wrote:
From: Bharat Gooty bharat.gooty@broadcom.com
Parse different gpio properties from dt as part of probe function. This detail is required to enable pinctrl pad later when gpio lines are requested.
Signed-off-by: Rayagonda Kokatanur rayagonda.kokatanur@broadcom.com Signed-off-by: Bharat Gooty bharat.gooty@broadcom.com
drivers/pinctrl/pinctrl-single.c | 52 ++++++++++++++++++++++++++++++++ 1 file changed, 52 insertions(+)
diff --git a/drivers/pinctrl/pinctrl-single.c b/drivers/pinctrl/pinctrl-single.c index cf9ad3670f..0f96cd5870 100644 --- a/drivers/pinctrl/pinctrl-single.c +++ b/drivers/pinctrl/pinctrl-single.c @@ -8,6 +8,7 @@ #include <dm.h> #include <dm/device_compat.h> #include <dm/devres.h> +#include <dm/of_access.h> #include <dm/pinctrl.h> #include <linux/libfdt.h> #include <linux/list.h> @@ -44,11 +45,27 @@ struct single_func { unsigned int *pins; };
+/**
- struct single_gpiofunc_range - pin ranges with same mux value of gpio fun
- @offset: offset base of pins
- @npins: number pins with the same mux value of gpio function
- @gpiofunc: mux value of gpio function
- @node: list node
- */
+struct single_gpiofunc_range {
u32 offset;u32 npins;u32 gpiofunc;struct list_head node;+};
/**
- struct single_priv - private data
- @bits_per_pin: number of bits per pin
- @npins: number of selectable pins
- @pin_name: temporary buffer to store the pin name
- @functions: list pin functions
*/
- @gpiofuncs: list gpio functions
struct single_priv { #if (IS_ENABLED(CONFIG_SANDBOX)) @@ -58,6 +75,7 @@ struct single_priv { unsigned int npins; char pin_name[PINNAME_SIZE]; struct list_head functions;
struct list_head gpiofuncs;};
/** @@ -454,6 +472,36 @@ static int single_get_pins_count(struct udevice *dev) return priv->npins; }
+static int single_add_gpio_func(struct udevice *dev) +{
struct single_priv *priv = dev_get_priv(dev);const char *propname = "pinctrl-single,gpio-range";const char *cellname = "#pinctrl-single,gpio-range-cells";struct single_gpiofunc_range *range;struct ofnode_phandle_args gpiospec;int ret, i;for (i = 0; ; i++) {ret = ofnode_parse_phandle_with_args(dev_ofnode(dev), propname,cellname, 0, i, &gpiospec);/* Do not treat it as error. Only treat it as end condition. */if (ret) {ret = 0;break;}range = devm_kzalloc(dev, sizeof(*range), GFP_KERNEL);if (!range) {ret = -ENOMEM;break;}range->offset = gpiospec.args[0];range->npins = gpiospec.args[1];range->gpiofunc = gpiospec.args[2];list_add_tail(&range->node, &priv->gpiofuncs);}return ret;+}
static int single_probe(struct udevice *dev) { struct single_pdata *pdata = dev_get_plat(dev); @@ -461,6 +509,7 @@ static int single_probe(struct udevice *dev) u32 size;
INIT_LIST_HEAD(&priv->functions);
INIT_LIST_HEAD(&priv->gpiofuncs); size = pdata->offset + pdata->width / BITS_PER_BYTE; #if (CONFIG_IS_ENABLED(SANDBOX))@@ -483,6 +532,9 @@ static int single_probe(struct udevice *dev) priv->npins *= (pdata->width / priv->bits_per_pin); }
if (single_add_gpio_func(dev))dev_dbg(dev, "gpio functions are not added\n");dev_dbg(dev, "%d pins\n", priv->npins); return 0;}
2.17.1
Acked-by: Rayagonda Kokatanur rayagonda.kokatanur@broadcom.com