diff options
Diffstat (limited to 'drivers/gpu/drm/i915/display/intel_gmbus.h')
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_gmbus.h | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_gmbus.h b/drivers/gpu/drm/i915/display/intel_gmbus.h new file mode 100644 index 000000000000..35a200a9efc0 --- /dev/null +++ b/drivers/gpu/drm/i915/display/intel_gmbus.h @@ -0,0 +1,50 @@ +/* SPDX-License-Identifier: MIT */ +/* + * Copyright © 2019 Intel Corporation + */ + +#ifndef __INTEL_GMBUS_H__ +#define __INTEL_GMBUS_H__ + +#include <linux/types.h> + +struct i2c_adapter; +struct intel_display; + +#define GMBUS_PIN_DISABLED 0 +#define GMBUS_PIN_SSC 1 +#define GMBUS_PIN_VGADDC 2 +#define GMBUS_PIN_PANEL 3 +#define GMBUS_PIN_DPD_CHV 3 /* HDMID_CHV */ +#define GMBUS_PIN_DPC 4 /* HDMIC */ +#define GMBUS_PIN_DPB 5 /* SDVO, HDMIB */ +#define GMBUS_PIN_DPD 6 /* HDMID */ +#define GMBUS_PIN_RESERVED 7 /* 7 reserved */ +#define GMBUS_PIN_1_BXT 1 /* BXT+ (atom) and CNP+ (big core) */ +#define GMBUS_PIN_2_BXT 2 +#define GMBUS_PIN_3_BXT 3 +#define GMBUS_PIN_4_CNP 4 +#define GMBUS_PIN_5_MTP 5 +#define GMBUS_PIN_9_TC1_ICP 9 +#define GMBUS_PIN_10_TC2_ICP 10 +#define GMBUS_PIN_11_TC3_ICP 11 +#define GMBUS_PIN_12_TC4_ICP 12 +#define GMBUS_PIN_13_TC5_TGP 13 +#define GMBUS_PIN_14_TC6_TGP 14 + +#define GMBUS_NUM_PINS 15 /* including 0 */ + +int intel_gmbus_setup(struct intel_display *display); +void intel_gmbus_teardown(struct intel_display *display); +bool intel_gmbus_is_valid_pin(struct intel_display *display, unsigned int pin); +int intel_gmbus_output_aksv(struct i2c_adapter *adapter); + +struct i2c_adapter * +intel_gmbus_get_adapter(struct intel_display *display, unsigned int pin); +void intel_gmbus_force_bit(struct i2c_adapter *adapter, bool force_bit); +bool intel_gmbus_is_forced_bit(struct i2c_adapter *adapter); +void intel_gmbus_reset(struct intel_display *display); + +void intel_gmbus_irq_handler(struct intel_display *display); + +#endif /* __INTEL_GMBUS_H__ */ |