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drm/i915/dsi: abstract VLV gpio element execution to a separate function

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Prepare for future. No functional changes.

v2: Move earlier in the series. Use bool for gpio value.

Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
[Jani: restored fixme comment while applying.]
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/ee791fed271d7f31c34163de6c6be37d1b704ef3.1459884518.git.jani.nikula@intel.com
This commit is contained in:
Jani Nikula 2016-04-05 22:30:50 +03:00
parent b0c91cd0a6
commit 515d07dedc
1 changed files with 47 additions and 44 deletions
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91
drivers/gpu/drm/i915/intel_dsi_panel_vbt.c
View File

@ -187,13 +187,53 @@ static const u8 *mipi_exec_delay(struct intel_dsi *intel_dsi, const u8 *data)
return data;
}
static void vlv_exec_gpio(struct drm_i915_private *dev_priv,
u8 gpio_source, u8 gpio_index, bool value)
{
u16 pconf0, padval;
u32 tmp;
u8 port;
if (gpio_index >= ARRAY_SIZE(vlv_gpio_table)) {
DRM_DEBUG_KMS("unknown gpio index %u\n", gpio_index);
return;
}
if (dev_priv->vbt.dsi.seq_version >= 3) {
DRM_DEBUG_KMS("GPIO element v3 not supported\n");
return;
} else {
if (gpio_source == 0) {
port = IOSF_PORT_GPIO_NC;
} else if (gpio_source == 1) {
port = IOSF_PORT_GPIO_SC;
} else {
DRM_DEBUG_KMS("unknown gpio source %u\n", gpio_source);
return;
}
}
pconf0 = VLV_GPIO_PCONF0(vlv_gpio_table[gpio_index].base_offset);
padval = VLV_GPIO_PAD_VAL(vlv_gpio_table[gpio_index].base_offset);
mutex_lock(&dev_priv->sb_lock);
if (!vlv_gpio_table[gpio_index].init) {
/* FIXME: remove constant below */
vlv_iosf_sb_write(dev_priv, port, pconf0, 0x2000CC00);
vlv_gpio_table[gpio_index].init = true;
}
tmp = 0x4 | value;
vlv_iosf_sb_write(dev_priv, port, padval, tmp);
mutex_unlock(&dev_priv->sb_lock);
}
static const u8 *mipi_exec_gpio(struct intel_dsi *intel_dsi, const u8 *data)
{
u8 gpio_source, gpio_index, action, port;
u16 pconf0, padval;
u32 val;
struct drm_device *dev = intel_dsi->base.base.dev;
struct drm_i915_private *dev_priv = dev->dev_private;
u8 gpio_source, gpio_index;
bool value;
if (dev_priv->vbt.dsi.seq_version >= 3)
data++;
@ -207,50 +247,13 @@ static const u8 *mipi_exec_gpio(struct intel_dsi *intel_dsi, const u8 *data)
gpio_source = 0;
/* pull up/down */
action = *data++ & 1;
value = *data++ & 1;
if (gpio_index >= ARRAY_SIZE(vlv_gpio_table)) {
DRM_DEBUG_KMS("unknown gpio index %u\n", gpio_index);
goto out;
}
if (!IS_VALLEYVIEW(dev_priv)) {
if (IS_VALLEYVIEW(dev_priv))
vlv_exec_gpio(dev_priv, gpio_source, gpio_index, value);
else
DRM_DEBUG_KMS("GPIO element not supported on this platform\n");
goto out;
}
if (dev_priv->vbt.dsi.seq_version >= 3) {
DRM_DEBUG_KMS("GPIO element v3 not supported\n");
goto out;
} else {
if (gpio_source == 0) {
port = IOSF_PORT_GPIO_NC;
} else if (gpio_source == 1) {
port = IOSF_PORT_GPIO_SC;
} else {
DRM_DEBUG_KMS("unknown gpio source %u\n", gpio_source);
goto out;
}
}
pconf0 = VLV_GPIO_PCONF0(vlv_gpio_table[gpio_index].base_offset);
padval = VLV_GPIO_PAD_VAL(vlv_gpio_table[gpio_index].base_offset);
mutex_lock(&dev_priv->sb_lock);
if (!vlv_gpio_table[gpio_index].init) {
/* program the function */
/* FIXME: remove constant below */
vlv_iosf_sb_write(dev_priv, port, pconf0, 0x2000CC00);
vlv_gpio_table[gpio_index].init = true;
}
val = 0x4 | action;
/* pull up/down */
vlv_iosf_sb_write(dev_priv, port, padval, val);
mutex_unlock(&dev_priv->sb_lock);
out:
return data;
}