From 6363ee6f496eb7e3b3f78dc105e522c7b496089b Mon Sep 17 00:00:00 2001 From: Zhao Yakui Date: Tue, 24 Nov 2009 09:48:44 +0800 Subject: [PATCH] drm/i915: parse child device from VBT On some laptops there is no HDMI/DP. But the xrandr still reports several disconnected HDMI/display ports. In such case the user will be confused. >DVI1 disconnected (normal left inverted right x axis y axis) >DP1 disconnected (normal left inverted right x axis y axis) >DVI2 disconnected (normal left inverted right x axis y axis) >DP2 disconnected (normal left inverted right x axis y axis) >DP3 disconnected (normal left inverted right x axis y axis) This patch set is to use the child device parsed in VBT to decide whether the HDMI/DP/LVDS/TV should be initialized. Parse the child device from VBT. The device class type is also added for LFP, TV, HDMI, DP output. https://bugs.freedesktop.org/show_bug.cgi?id=22785 Signed-off-by: Zhao Yakui Reviewed-by: Adam Jackson Signed-off-by: Eric Anholt --- drivers/gpu/drm/i915/i915_dma.c | 9 +++++ drivers/gpu/drm/i915/i915_drv.h | 2 + drivers/gpu/drm/i915/intel_bios.c | 65 +++++++++++++++++++++++++++++++ drivers/gpu/drm/i915/intel_bios.h | 17 ++++++++ 4 files changed, 93 insertions(+) diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c index 093146bacf8..a8efe78e5c5 100644 --- a/drivers/gpu/drm/i915/i915_dma.c +++ b/drivers/gpu/drm/i915/i915_dma.c @@ -1526,6 +1526,15 @@ int i915_driver_unload(struct drm_device *dev) } if (drm_core_check_feature(dev, DRIVER_MODESET)) { + /* + * free the memory space allocated for the child device + * config parsed from VBT + */ + if (dev_priv->child_dev && dev_priv->child_dev_num) { + kfree(dev_priv->child_dev); + dev_priv->child_dev = NULL; + dev_priv->child_dev_num = 0; + } drm_irq_uninstall(dev); vga_client_register(dev->pdev, NULL, NULL, NULL); } diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 13ede75ff6c..cc91cff8871 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -545,6 +545,8 @@ typedef struct drm_i915_private { struct timer_list idle_timer; bool busy; u16 orig_clock; + int child_dev_num; + struct child_device_config *child_dev; } drm_i915_private_t; /** driver private structure attached to each drm_gem_object */ diff --git a/drivers/gpu/drm/i915/intel_bios.c b/drivers/gpu/drm/i915/intel_bios.c index 800d13bd9e6..73ceb36c790 100644 --- a/drivers/gpu/drm/i915/intel_bios.c +++ b/drivers/gpu/drm/i915/intel_bios.c @@ -404,6 +404,70 @@ parse_driver_features(struct drm_i915_private *dev_priv, dev_priv->render_reclock_avail = true; } +static void +parse_device_mapping(struct drm_i915_private *dev_priv, + struct bdb_header *bdb) +{ + struct bdb_general_definitions *p_defs; + struct child_device_config *p_child, *child_dev_ptr; + int i, child_device_num, count; + u16 block_size; + + p_defs = find_section(bdb, BDB_GENERAL_DEFINITIONS); + if (!p_defs) { + DRM_DEBUG_KMS("No general definition block is found\n"); + return; + } + /* judge whether the size of child device meets the requirements. + * If the child device size obtained from general definition block + * is different with sizeof(struct child_device_config), skip the + * parsing of sdvo device info + */ + if (p_defs->child_dev_size != sizeof(*p_child)) { + /* different child dev size . Ignore it */ + DRM_DEBUG_KMS("different child size is found. Invalid.\n"); + return; + } + /* get the block size of general definitions */ + block_size = get_blocksize(p_defs); + /* get the number of child device */ + child_device_num = (block_size - sizeof(*p_defs)) / + sizeof(*p_child); + count = 0; + /* get the number of child device that is present */ + for (i = 0; i < child_device_num; i++) { + p_child = &(p_defs->devices[i]); + if (!p_child->device_type) { + /* skip the device block if device type is invalid */ + continue; + } + count++; + } + if (!count) { + DRM_DEBUG_KMS("no child dev is parsed from VBT \n"); + return; + } + dev_priv->child_dev = kzalloc(sizeof(*p_child) * count, GFP_KERNEL); + if (!dev_priv->child_dev) { + DRM_DEBUG_KMS("No memory space for child device\n"); + return; + } + + dev_priv->child_dev_num = count; + count = 0; + for (i = 0; i < child_device_num; i++) { + p_child = &(p_defs->devices[i]); + if (!p_child->device_type) { + /* skip the device block if device type is invalid */ + continue; + } + child_dev_ptr = dev_priv->child_dev + count; + count++; + memcpy((void *)child_dev_ptr, (void *)p_child, + sizeof(*p_child)); + } + return; +} /** * intel_init_bios - initialize VBIOS settings & find VBT * @dev: DRM device @@ -455,6 +519,7 @@ intel_init_bios(struct drm_device *dev) parse_lfp_panel_data(dev_priv, bdb); parse_sdvo_panel_data(dev_priv, bdb); parse_sdvo_device_mapping(dev_priv, bdb); + parse_device_mapping(dev_priv, bdb); parse_driver_features(dev_priv, bdb); pci_unmap_rom(pdev, bios); diff --git a/drivers/gpu/drm/i915/intel_bios.h b/drivers/gpu/drm/i915/intel_bios.h index 0f8e5f69ac7..425ac9d7f72 100644 --- a/drivers/gpu/drm/i915/intel_bios.h +++ b/drivers/gpu/drm/i915/intel_bios.h @@ -549,4 +549,21 @@ bool intel_init_bios(struct drm_device *dev); #define SWF14_APM_STANDBY 0x1 #define SWF14_APM_RESTORE 0x0 +/* Add the device class for LFP, TV, HDMI */ +#define DEVICE_TYPE_INT_LFP 0x1022 +#define DEVICE_TYPE_INT_TV 0x1009 +#define DEVICE_TYPE_HDMI 0x60D2 +#define DEVICE_TYPE_DP 0x68C6 +#define DEVICE_TYPE_eDP 0x78C6 + +/* define the DVO port for HDMI output type */ +#define DVO_B 1 +#define DVO_C 2 +#define DVO_D 3 + +/* define the PORT for DP output type */ +#define PORT_IDPB 7 +#define PORT_IDPC 8 +#define PORT_IDPD 9 + #endif /* _I830_BIOS_H_ */