From 515d07dedcc79aee89bd5b9483f4352c9272de41 Mon Sep 17 00:00:00 2001 From: Jani Nikula Date: Tue, 5 Apr 2016 22:30:50 +0300 Subject: [PATCH] drm/i915/dsi: abstract VLV gpio element execution to a separate function MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Prepare for future. No functional changes. v2: Move earlier in the series. Use bool for gpio value. Reviewed-by: Ville Syrjälä [Jani: restored fixme comment while applying.] Signed-off-by: Jani Nikula Link: http://patchwork.freedesktop.org/patch/msgid/ee791fed271d7f31c34163de6c6be37d1b704ef3.1459884518.git.jani.nikula@intel.com --- drivers/gpu/drm/i915/intel_dsi_panel_vbt.c | 67 +++++++++++----------- 1 file changed, 35 insertions(+), 32 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_dsi_panel_vbt.c b/drivers/gpu/drm/i915/intel_dsi_panel_vbt.c index 21964ba0bf34..c220f01afc24 100644 --- a/drivers/gpu/drm/i915/intel_dsi_panel_vbt.c +++ b/drivers/gpu/drm/i915/intel_dsi_panel_vbt.c @@ -187,41 +187,21 @@ static const u8 *mipi_exec_delay(struct intel_dsi *intel_dsi, const u8 *data) return data; } -static const u8 *mipi_exec_gpio(struct intel_dsi *intel_dsi, const u8 *data) +static void vlv_exec_gpio(struct drm_i915_private *dev_priv, + u8 gpio_source, u8 gpio_index, bool value) { - 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; - - if (dev_priv->vbt.dsi.seq_version >= 3) - 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; + u32 tmp; + u8 port; 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)) { - DRM_DEBUG_KMS("GPIO element not supported on this platform\n"); - goto out; + return; } if (dev_priv->vbt.dsi.seq_version >= 3) { DRM_DEBUG_KMS("GPIO element v3 not supported\n"); - goto out; + return; } else { if (gpio_source == 0) { port = IOSF_PORT_GPIO_NC; @@ -229,7 +209,7 @@ static const u8 *mipi_exec_gpio(struct intel_dsi *intel_dsi, const u8 *data) port = IOSF_PORT_GPIO_SC; } else { DRM_DEBUG_KMS("unknown gpio source %u\n", gpio_source); - goto out; + return; } } @@ -238,19 +218,42 @@ static const u8 *mipi_exec_gpio(struct intel_dsi *intel_dsi, const u8 *data) 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; + 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) +{ + 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++; + + 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 */ - vlv_iosf_sb_write(dev_priv, port, padval, val); - mutex_unlock(&dev_priv->sb_lock); + value = *data++ & 1; + + 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"); -out: return data; } -- 2.20.1