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      1 /*	$NetBSD: intel_gmbus.h,v 1.2 2021/12/18 23:45:30 riastradh Exp $	*/
      2 
      3 /* SPDX-License-Identifier: MIT */
      4 /*
      5  * Copyright  2019 Intel Corporation
      6  */
      7 
      8 #ifndef __INTEL_GMBUS_H__
      9 #define __INTEL_GMBUS_H__
     10 
     11 #include <linux/types.h>
     12 
     13 struct drm_i915_private;
     14 struct i2c_adapter;
     15 
     16 #define GMBUS_PIN_DISABLED	0
     17 #define GMBUS_PIN_SSC		1
     18 #define GMBUS_PIN_VGADDC	2
     19 #define GMBUS_PIN_PANEL		3
     20 #define GMBUS_PIN_DPD_CHV	3 /* HDMID_CHV */
     21 #define GMBUS_PIN_DPC		4 /* HDMIC */
     22 #define GMBUS_PIN_DPB		5 /* SDVO, HDMIB */
     23 #define GMBUS_PIN_DPD		6 /* HDMID */
     24 #define GMBUS_PIN_RESERVED	7 /* 7 reserved */
     25 #define GMBUS_PIN_1_BXT		1 /* BXT+ (atom) and CNP+ (big core) */
     26 #define GMBUS_PIN_2_BXT		2
     27 #define GMBUS_PIN_3_BXT		3
     28 #define GMBUS_PIN_4_CNP		4
     29 #define GMBUS_PIN_9_TC1_ICP	9
     30 #define GMBUS_PIN_10_TC2_ICP	10
     31 #define GMBUS_PIN_11_TC3_ICP	11
     32 #define GMBUS_PIN_12_TC4_ICP	12
     33 #define GMBUS_PIN_13_TC5_TGP	13
     34 #define GMBUS_PIN_14_TC6_TGP	14
     35 
     36 #define GMBUS_NUM_PINS	15 /* including 0 */
     37 
     38 int intel_gmbus_setup(struct drm_i915_private *dev_priv);
     39 void intel_gmbus_teardown(struct drm_i915_private *dev_priv);
     40 bool intel_gmbus_is_valid_pin(struct drm_i915_private *dev_priv,
     41 			      unsigned int pin);
     42 int intel_gmbus_output_aksv(struct i2c_adapter *adapter);
     43 
     44 struct i2c_adapter *
     45 intel_gmbus_get_adapter(struct drm_i915_private *dev_priv, unsigned int pin);
     46 void intel_gmbus_set_speed(struct i2c_adapter *adapter, int speed);
     47 void intel_gmbus_force_bit(struct i2c_adapter *adapter, bool force_bit);
     48 bool intel_gmbus_is_forced_bit(struct i2c_adapter *adapter);
     49 void intel_gmbus_reset(struct drm_i915_private *dev_priv);
     50 
     51 #endif /* __INTEL_GMBUS_H__ */
     52