From 74b0c2d75fb4cc89173944e6d8f9eb47aca0c343 Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Fri, 13 Jun 2014 15:14:34 +0200 Subject: drm/i915, HD-audio: Don't continue probing when nomodeset is given When a machine is booted with nomodeset option, i915 driver skips the whole initialization. Meanwhile, HD-audio tries to bind wth i915 just by request_symbol() without knowing that the initialization was skipped, and eventually it hits WARN_ON() in i915_request_power_well() and i915_release_power_well() wrongly but still continues probing, even though it doesn't work at all. In this patch, both functions are changed to return an error in case of uninitialized state instead of WARN_ON(), so that HD-audio driver can give up HDMI controller initialization at the right time. Acked-by: Daniel Vetter Cc: [3.15] Signed-off-by: Takashi Iwai --- include/drm/i915_powerwell.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/drm') diff --git a/include/drm/i915_powerwell.h b/include/drm/i915_powerwell.h index cfdc884405b7..2baba9996094 100644 --- a/include/drm/i915_powerwell.h +++ b/include/drm/i915_powerwell.h @@ -30,7 +30,7 @@ #define _I915_POWERWELL_H_ /* For use by hda_i915 driver */ -extern void i915_request_power_well(void); -extern void i915_release_power_well(void); +extern int i915_request_power_well(void); +extern int i915_release_power_well(void); #endif /* _I915_POWERWELL_H_ */ -- cgit v1.2.3 From fb7023e0e248a33cb00d0a9cdce0bcedaa1ad284 Mon Sep 17 00:00:00 2001 From: Rodrigo Vivi Date: Tue, 10 Jun 2014 10:09:52 -0700 Subject: drm/i915: BDW: Adding Reserved PCI IDs. These PCI IDs are reserved on BSpec and can be used at any time in the future. So let's add this now in order to avoid issues that we already faced on previous platforms, like finding out about new ids when user reported accelaration weren't enabled. Cc: stable@vger.kernel.org Reviewed-by: Ben Widawsky Signed-off-by: Rodrigo Vivi Signed-off-by: Jani Nikula --- include/drm/i915_pciids.h | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-) (limited to 'include/drm') diff --git a/include/drm/i915_pciids.h b/include/drm/i915_pciids.h index 0572035673f3..a70d45647898 100644 --- a/include/drm/i915_pciids.h +++ b/include/drm/i915_pciids.h @@ -237,13 +237,21 @@ #define INTEL_BDW_GT3D_IDS(info) \ _INTEL_BDW_D_IDS(3, info) +#define INTEL_BDW_RSVDM_IDS(info) \ + _INTEL_BDW_M_IDS(4, info) + +#define INTEL_BDW_RSVDD_IDS(info) \ + _INTEL_BDW_D_IDS(4, info) + #define INTEL_BDW_M_IDS(info) \ INTEL_BDW_GT12M_IDS(info), \ - INTEL_BDW_GT3M_IDS(info) + INTEL_BDW_GT3M_IDS(info), \ + INTEL_BDW_RSVDM_IDS(info) #define INTEL_BDW_D_IDS(info) \ INTEL_BDW_GT12D_IDS(info), \ - INTEL_BDW_GT3D_IDS(info) + INTEL_BDW_GT3D_IDS(info), \ + INTEL_BDW_RSVDD_IDS(info) #define INTEL_CHV_IDS(info) \ INTEL_VGA_DEVICE(0x22b0, info), \ -- cgit v1.2.3 From c149dcb5c60bfea8871f16dfcc0690255eeb825f Mon Sep 17 00:00:00 2001 From: Jani Nikula Date: Fri, 4 Jul 2014 10:00:37 +0800 Subject: drm/i915: provide interface for audio driver to query cdclk For Haswell and Broadwell, if the display power well has been disabled, the display audio controller divider values EM4 M VALUE and EM5 N VALUE will have been lost. The CDCLK frequency is required for reprogramming them to generate 24MHz HD-A link BCLK. So provide a private interface for the audio driver to query CDCLK. This is a stopgap solution until a more generic interface between audio and display drivers has been implemented. Signed-off-by: Jani Nikula Reviewed-by: Damien Lespiau Signed-off-by: Mengdong Lin Cc: Signed-off-by: Takashi Iwai --- drivers/gpu/drm/i915/intel_pm.c | 21 +++++++++++++++++++++ include/drm/i915_powerwell.h | 1 + 2 files changed, 22 insertions(+) (limited to 'include/drm') diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index 6463f0201cf2..409d62676854 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -6053,6 +6053,27 @@ int i915_release_power_well(void) } EXPORT_SYMBOL_GPL(i915_release_power_well); +/* + * Private interface for the audio driver to get CDCLK in kHz. + * + * Caller must request power well using i915_request_power_well() prior to + * making the call. + */ +int i915_get_cdclk_freq(void) +{ + struct drm_i915_private *dev_priv; + + if (!hsw_pwr) + return -ENODEV; + + dev_priv = container_of(hsw_pwr, struct drm_i915_private, + power_domains); + + return intel_ddi_get_cdclk_freq(dev_priv); +} +EXPORT_SYMBOL_GPL(i915_get_cdclk_freq); + + #define POWER_DOMAIN_MASK (BIT(POWER_DOMAIN_NUM) - 1) #define HSW_ALWAYS_ON_POWER_DOMAINS ( \ diff --git a/include/drm/i915_powerwell.h b/include/drm/i915_powerwell.h index 2baba9996094..baa6f11b1837 100644 --- a/include/drm/i915_powerwell.h +++ b/include/drm/i915_powerwell.h @@ -32,5 +32,6 @@ /* For use by hda_i915 driver */ extern int i915_request_power_well(void); extern int i915_release_power_well(void); +extern int i915_get_cdclk_freq(void); #endif /* _I915_POWERWELL_H_ */ -- cgit v1.2.3