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drm/i915/dsi: add support for DSI sequence block v2 gpio element

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In sequence block v2, and only in v2, the gpio source (i.e. IOSF port)
is specified separately.

v2: initialize gpio_source to 0 and handle v1 and v2 in the same branch

Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/87152feec8f921dc82502af1b29c0956b0d360bb.1458299160.git.jani.nikula@intel.com
This commit is contained in:
Jani Nikula 2016-03-18 13:11:10 +02:00
parent 27af5eea54
commit 1d96a4a8ac
1 changed files with 18 additions and 4 deletions
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22
drivers/gpu/drm/i915/intel_dsi_panel_vbt.c
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@ -198,7 +198,7 @@ static const u8 *mipi_exec_delay(struct intel_dsi *intel_dsi, const u8 *data)
static const u8 *mipi_exec_gpio(struct intel_dsi *intel_dsi, const u8 *data)
{
u8 gpio_index, action;
u8 gpio_source, gpio_index, action, port;
u16 function, pad;
u32 val;
struct drm_device *dev = intel_dsi->base.base.dev;
@ -209,6 +209,12 @@ static const u8 *mipi_exec_gpio(struct intel_dsi *intel_dsi, const u8 *data)
gpio_index = *data++;
/* gpio source in sequence v2 only */
if (dev_priv->vbt.dsi.seq_version == 2)
gpio_source = (*data >> 1) & 3;
else
gpio_source = 0;
/* pull up/down */
action = *data++ & 1;
@ -225,6 +231,15 @@ static const u8 *mipi_exec_gpio(struct intel_dsi *intel_dsi, const u8 *data)
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;
}
}
function = gtable[gpio_index].function_reg;
@ -234,15 +249,14 @@ static const u8 *mipi_exec_gpio(struct intel_dsi *intel_dsi, const u8 *data)
if (!gtable[gpio_index].init) {
/* program the function */
/* FIXME: remove constant below */
vlv_iosf_sb_write(dev_priv, IOSF_PORT_GPIO_NC, function,
0x2000CC00);
vlv_iosf_sb_write(dev_priv, port, function, 0x2000CC00);
gtable[gpio_index].init = 1;
}
val = 0x4 | action;
/* pull up/down */
vlv_iosf_sb_write(dev_priv, IOSF_PORT_GPIO_NC, pad, val);
vlv_iosf_sb_write(dev_priv, port, pad, val);
mutex_unlock(&dev_priv->sb_lock);
out: