From 46eb303682f72717d1a75cdd2309733bfed43396 Mon Sep 17 00:00:00 2001 From: Adam Jackson Date: Thu, 16 Jun 2011 16:36:23 -0400 Subject: [PATCH] drm/i915: Remove "i2c_speed" nonsense from child device table I have no evidence for this byte being used this way, and lots of counterexamples. Restore the struct to its empirical definition and patch up gmbus setup to match. Signed-off-by: Adam Jackson Acked-by: Chris Wilson Signed-off-by: Keith Packard --- drivers/gpu/drm/i915/i915_drv.h | 1 - drivers/gpu/drm/i915/intel_bios.c | 6 ++---- drivers/gpu/drm/i915/intel_bios.h | 3 +-- drivers/gpu/drm/i915/intel_sdvo.c | 12 +++++------- 4 files changed, 8 insertions(+), 14 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 0e777fdf9c61..c02cdace744c 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -139,7 +139,6 @@ struct sdvo_device_mapping { u8 slave_addr; u8 dvo_wiring; u8 i2c_pin; - u8 i2c_speed; u8 ddc_pin; }; diff --git a/drivers/gpu/drm/i915/intel_bios.c b/drivers/gpu/drm/i915/intel_bios.c index dbda66f622ee..63880e2e5cfd 100644 --- a/drivers/gpu/drm/i915/intel_bios.c +++ b/drivers/gpu/drm/i915/intel_bios.c @@ -403,15 +403,13 @@ parse_sdvo_device_mapping(struct drm_i915_private *dev_priv, p_mapping->dvo_wiring = p_child->dvo_wiring; p_mapping->ddc_pin = p_child->ddc_pin; p_mapping->i2c_pin = p_child->i2c_pin; - p_mapping->i2c_speed = p_child->i2c_speed; p_mapping->initialized = 1; - DRM_DEBUG_KMS("SDVO device: dvo=%x, addr=%x, wiring=%d, ddc_pin=%d, i2c_pin=%d, i2c_speed=%d\n", + DRM_DEBUG_KMS("SDVO device: dvo=%x, addr=%x, wiring=%d, ddc_pin=%d, i2c_pin=%d\n", p_mapping->dvo_port, p_mapping->slave_addr, p_mapping->dvo_wiring, p_mapping->ddc_pin, - p_mapping->i2c_pin, - p_mapping->i2c_speed); + p_mapping->i2c_pin); } else { DRM_DEBUG_KMS("Maybe one SDVO port is shared by " "two SDVO device.\n"); diff --git a/drivers/gpu/drm/i915/intel_bios.h b/drivers/gpu/drm/i915/intel_bios.h index a8cad2b88e04..8af3735e27c6 100644 --- a/drivers/gpu/drm/i915/intel_bios.h +++ b/drivers/gpu/drm/i915/intel_bios.h @@ -202,8 +202,7 @@ struct bdb_general_features { struct child_device_config { u16 handle; u16 device_type; - u8 i2c_speed; - u8 rsvd[9]; + u8 device_id[10]; /* ascii string */ u16 addin_offset; u8 dvo_port; /* See Device_PORT_* above */ u8 i2c_pin; diff --git a/drivers/gpu/drm/i915/intel_sdvo.c b/drivers/gpu/drm/i915/intel_sdvo.c index 731200243219..ed15c00aecdf 100644 --- a/drivers/gpu/drm/i915/intel_sdvo.c +++ b/drivers/gpu/drm/i915/intel_sdvo.c @@ -1896,7 +1896,7 @@ intel_sdvo_select_i2c_bus(struct drm_i915_private *dev_priv, struct intel_sdvo *sdvo, u32 reg) { struct sdvo_device_mapping *mapping; - u8 pin, speed; + u8 pin; if (IS_SDVOB(reg)) mapping = &dev_priv->sdvo_mappings[0]; @@ -1904,18 +1904,16 @@ intel_sdvo_select_i2c_bus(struct drm_i915_private *dev_priv, mapping = &dev_priv->sdvo_mappings[1]; pin = GMBUS_PORT_DPB; - speed = GMBUS_RATE_1MHZ >> 8; - if (mapping->initialized) { + if (mapping->initialized) pin = mapping->i2c_pin; - speed = mapping->i2c_speed; - } if (pin < GMBUS_NUM_PORTS) { sdvo->i2c = &dev_priv->gmbus[pin].adapter; - intel_gmbus_set_speed(sdvo->i2c, speed); + intel_gmbus_set_speed(sdvo->i2c, GMBUS_RATE_1MHZ >> 8); intel_gmbus_force_bit(sdvo->i2c, true); - } else + } else { sdvo->i2c = &dev_priv->gmbus[GMBUS_PORT_DPB].adapter; + } } static bool -- GitLab