158 lines
4.9 KiB
Diff
158 lines
4.9 KiB
Diff
From 325ba34823f454c35c814d72022ba736ad56a1d4 Mon Sep 17 00:00:00 2001
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From: John Crispin <blogic@openwrt.org>
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Date: Wed, 30 Jan 2013 18:21:48 +0100
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Subject: [PATCH 07/40] PINCTRL: lantiq: add pin_config_group_set support
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While converting all the boards supported by OpenWrt to OF I noticed that this
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feature is missing. Adding it makes the devicetrees more readable.
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Signed-off-by: John Crispin <blogic@openwrt.org>
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---
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drivers/pinctrl/pinctrl-lantiq.c | 54 ++++++++++++++++++++++++--------------
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drivers/pinctrl/pinctrl-xway.c | 15 +++++++++++
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2 files changed, 49 insertions(+), 20 deletions(-)
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diff --git a/drivers/pinctrl/pinctrl-lantiq.c b/drivers/pinctrl/pinctrl-lantiq.c
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index 15f501d..7d11072 100644
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--- a/drivers/pinctrl/pinctrl-lantiq.c
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+++ b/drivers/pinctrl/pinctrl-lantiq.c
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@@ -64,11 +64,13 @@ static void ltq_pinctrl_pin_dbg_show(struct pinctrl_dev *pctldev,
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seq_printf(s, " %s", dev_name(pctldev->dev));
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}
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-static int ltq_pinctrl_dt_subnode_to_map(struct pinctrl_dev *pctldev,
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+static void ltq_pinctrl_dt_subnode_to_map(struct pinctrl_dev *pctldev,
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struct device_node *np,
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struct pinctrl_map **map)
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{
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struct ltq_pinmux_info *info = pinctrl_dev_get_drvdata(pctldev);
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+ struct property *pins = of_find_property(np, "lantiq,pins", NULL);
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+ struct property *groups = of_find_property(np, "lantiq,groups", NULL);
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unsigned long configs[3];
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unsigned num_configs = 0;
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struct property *prop;
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@@ -76,8 +78,20 @@ static int ltq_pinctrl_dt_subnode_to_map(struct pinctrl_dev *pctldev,
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const char *function;
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int ret, i;
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+ if (!pins && !groups) {
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+ dev_err(pctldev->dev, "%s defines neither pins nor groups\n",
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+ np->name);
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+ return;
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+ }
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+
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+ if (pins && groups) {
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+ dev_err(pctldev->dev, "%s defines both pins and groups\n",
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+ np->name);
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+ return;
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+ }
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+
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ret = of_property_read_string(np, "lantiq,function", &function);
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- if (!ret) {
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+ if (groups && !ret) {
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of_property_for_each_string(np, "lantiq,groups", prop, group) {
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(*map)->type = PIN_MAP_TYPE_MUX_GROUP;
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(*map)->name = function;
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@@ -85,11 +99,6 @@ static int ltq_pinctrl_dt_subnode_to_map(struct pinctrl_dev *pctldev,
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(*map)->data.mux.function = function;
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(*map)++;
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}
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- if (of_find_property(np, "lantiq,pins", NULL))
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- dev_err(pctldev->dev,
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- "%s mixes pins and groups settings\n",
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- np->name);
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- return 0;
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}
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for (i = 0; i < info->num_params; i++) {
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@@ -103,7 +112,7 @@ static int ltq_pinctrl_dt_subnode_to_map(struct pinctrl_dev *pctldev,
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}
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if (!num_configs)
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- return -EINVAL;
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+ return;
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of_property_for_each_string(np, "lantiq,pins", prop, pin) {
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(*map)->data.configs.configs = kmemdup(configs,
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@@ -115,7 +124,16 @@ static int ltq_pinctrl_dt_subnode_to_map(struct pinctrl_dev *pctldev,
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(*map)->data.configs.num_configs = num_configs;
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(*map)++;
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}
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- return 0;
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+ of_property_for_each_string(np, "lantiq,groups", prop, group) {
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+ (*map)->data.configs.configs = kmemdup(configs,
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+ num_configs * sizeof(unsigned long),
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+ GFP_KERNEL);
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+ (*map)->type = PIN_MAP_TYPE_CONFIGS_GROUP;
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+ (*map)->name = group;
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+ (*map)->data.configs.group_or_pin = group;
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+ (*map)->data.configs.num_configs = num_configs;
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+ (*map)++;
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+ }
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}
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static int ltq_pinctrl_dt_subnode_size(struct device_node *np)
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@@ -135,23 +153,19 @@ static int ltq_pinctrl_dt_node_to_map(struct pinctrl_dev *pctldev,
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{
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struct pinctrl_map *tmp;
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struct device_node *np;
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- int ret;
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+ int max_maps = 0;
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- *num_maps = 0;
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for_each_child_of_node(np_config, np)
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- *num_maps += ltq_pinctrl_dt_subnode_size(np);
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- *map = kzalloc(*num_maps * sizeof(struct pinctrl_map), GFP_KERNEL);
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+ max_maps += ltq_pinctrl_dt_subnode_size(np);
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+ *map = kzalloc(max_maps * sizeof(struct pinctrl_map) * 2, GFP_KERNEL);
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if (!*map)
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return -ENOMEM;
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tmp = *map;
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- for_each_child_of_node(np_config, np) {
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- ret = ltq_pinctrl_dt_subnode_to_map(pctldev, np, &tmp);
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- if (ret < 0) {
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- ltq_pinctrl_dt_free_map(pctldev, *map, *num_maps);
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- return ret;
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- }
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- }
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+ for_each_child_of_node(np_config, np)
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+ ltq_pinctrl_dt_subnode_to_map(pctldev, np, &tmp);
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+ *num_maps = ((int)(tmp - *map));
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+
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return 0;
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}
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diff --git a/drivers/pinctrl/pinctrl-xway.c b/drivers/pinctrl/pinctrl-xway.c
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index c49c9db..aa4c8b8 100644
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--- a/drivers/pinctrl/pinctrl-xway.c
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+++ b/drivers/pinctrl/pinctrl-xway.c
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@@ -522,9 +522,24 @@ static int xway_pinconf_set(struct pinctrl_dev *pctldev,
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return 0;
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}
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+int xway_pinconf_group_set(struct pinctrl_dev *pctldev,
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+ unsigned selector,
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+ unsigned long config)
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+{
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+ struct ltq_pinmux_info *info = pinctrl_dev_get_drvdata(pctldev);
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+ int i, ret = 0;
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+
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+ for (i = 0; i < info->grps[selector].npins && !ret; i++)
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+ ret = xway_pinconf_set(pctldev,
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+ info->grps[selector].pins[i], config);
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+
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+ return ret;
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+}
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+
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static struct pinconf_ops xway_pinconf_ops = {
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.pin_config_get = xway_pinconf_get,
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.pin_config_set = xway_pinconf_set,
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+ .pin_config_group_set = xway_pinconf_group_set,
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};
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static struct pinctrl_desc xway_pctrl_desc = {
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--
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1.7.10.4
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