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