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pinctrl: tegra: debugfs enhancements 

* Only provide debugfs-relates ops when CONFIG_DEBUG_FS is enabled.
* Implement pin_config_group_dbg_show op.
* Implement pin_config_config_dbg_show op.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Stephen Warren 2012-04-11 15:42:56 -06:00
parent 52f48fe00f
commit b5badbaad1
1 changed files with 70 additions and 7 deletions
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77
drivers/pinctrl/pinctrl-tegra.c
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@ -83,12 +83,14 @@ static int tegra_pinctrl_get_group_pins(struct pinctrl_dev *pctldev,
return 0;
}
#ifdef CONFIG_DEBUG_FS
static void tegra_pinctrl_pin_dbg_show(struct pinctrl_dev *pctldev,
struct seq_file *s,
unsigned offset)
{
seq_printf(s, " %s", dev_name(pctldev->dev));
}
#endif
static int reserve_map(struct pinctrl_map **map, unsigned *reserved_maps,
unsigned *num_maps, unsigned reserve)
@ -295,7 +297,9 @@ static struct pinctrl_ops tegra_pinctrl_ops = {
.get_groups_count = tegra_pinctrl_get_groups_count,
.get_group_name = tegra_pinctrl_get_group_name,
.get_group_pins = tegra_pinctrl_get_group_pins,
#ifdef CONFIG_DEBUG_FS
.pin_dbg_show = tegra_pinctrl_pin_dbg_show,
#endif
.dt_node_to_map = tegra_pinctrl_dt_node_to_map,
.dt_free_map = tegra_pinctrl_dt_free_map,
};
@ -385,6 +389,7 @@ static struct pinmux_ops tegra_pinmux_ops = {
static int tegra_pinconf_reg(struct tegra_pmx *pmx,
const struct tegra_pingroup *g,
enum tegra_pinconf_param param,
bool report_err,
s8 *bank, s16 *reg, s8 *bit, s8 *width)
{
switch (param) {
@ -472,9 +477,10 @@ static int tegra_pinconf_reg(struct tegra_pmx *pmx,
}
if (*reg < 0) {
dev_err(pmx->dev,
"Config param %04x not supported on group %s\n",
param, g->name);
if (report_err)
dev_err(pmx->dev,
"Config param %04x not supported on group %s\n",
param, g->name);
return -ENOTSUPP;
}
@ -507,7 +513,8 @@ static int tegra_pinconf_group_get(struct pinctrl_dev *pctldev,
g = &pmx->soc->groups[group];
ret = tegra_pinconf_reg(pmx, g, param, &bank, &reg, &bit, &width);
ret = tegra_pinconf_reg(pmx, g, param, true, &bank, &reg, &bit,
&width);
if (ret < 0)
return ret;
@ -534,7 +541,8 @@ static int tegra_pinconf_group_set(struct pinctrl_dev *pctldev,
g = &pmx->soc->groups[group];
ret = tegra_pinconf_reg(pmx, g, param, &bank, &reg, &bit, &width);
ret = tegra_pinconf_reg(pmx, g, param, true, &bank, &reg, &bit,
&width);
if (ret < 0)
return ret;
@ -563,23 +571,78 @@ static int tegra_pinconf_group_set(struct pinctrl_dev *pctldev,
return 0;
}
#ifdef CONFIG_DEBUG_FS
static void tegra_pinconf_dbg_show(struct pinctrl_dev *pctldev,
struct seq_file *s, unsigned offset)
{
}
static void tegra_pinconf_group_dbg_show(struct pinctrl_dev *pctldev,
struct seq_file *s, unsigned selector)
static const char *strip_prefix(const char *s)
{
const char *comma = strchr(s, ',');
if (!comma)
return s;
return comma + 1;
}
static void tegra_pinconf_group_dbg_show(struct pinctrl_dev *pctldev,
struct seq_file *s, unsigned group)
{
struct tegra_pmx *pmx = pinctrl_dev_get_drvdata(pctldev);
const struct tegra_pingroup *g;
int i, ret;
s8 bank, bit, width;
s16 reg;
u32 val;
g = &pmx->soc->groups[group];
for (i = 0; i < ARRAY_SIZE(cfg_params); i++) {
ret = tegra_pinconf_reg(pmx, g, cfg_params[i].param, false,
&bank, &reg, &bit, &width);
if (ret < 0)
continue;
val = pmx_readl(pmx, bank, reg);
val >>= bit;
val &= (1 << width) - 1;
seq_printf(s, "\n\t%s=%u",
strip_prefix(cfg_params[i].property), val);
}
}
static void tegra_pinconf_config_dbg_show(struct pinctrl_dev *pctldev,
struct seq_file *s,
unsigned long config)
{
enum tegra_pinconf_param param = TEGRA_PINCONF_UNPACK_PARAM(config);
u16 arg = TEGRA_PINCONF_UNPACK_ARG(config);
const char *pname = "unknown";
int i;
for (i = 0; i < ARRAY_SIZE(cfg_params); i++) {
if (cfg_params[i].param == param) {
pname = cfg_params[i].property;
break;
}
}
seq_printf(s, "%s=%d", strip_prefix(pname), arg);
}
#endif
struct pinconf_ops tegra_pinconf_ops = {
.pin_config_get = tegra_pinconf_get,
.pin_config_set = tegra_pinconf_set,
.pin_config_group_get = tegra_pinconf_group_get,
.pin_config_group_set = tegra_pinconf_group_set,
#ifdef CONFIG_DEBUG_FS
.pin_config_dbg_show = tegra_pinconf_dbg_show,
.pin_config_group_dbg_show = tegra_pinconf_group_dbg_show,
.pin_config_config_dbg_show = tegra_pinconf_config_dbg_show,
#endif
};
static struct pinctrl_gpio_range tegra_pinctrl_gpio_range = {