diff options
Diffstat (limited to 'drivers/gpu/drm/i915/display/intel_lvds_regs.h')
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_lvds_regs.h | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_lvds_regs.h b/drivers/gpu/drm/i915/display/intel_lvds_regs.h new file mode 100644 index 000000000000..47c1832819ee --- /dev/null +++ b/drivers/gpu/drm/i915/display/intel_lvds_regs.h @@ -0,0 +1,65 @@ +/* SPDX-License-Identifier: MIT */ +/* + * Copyright © 2023 Intel Corporation + */ + +#ifndef __INTEL_LVDS_REGS_H__ +#define __INTEL_LVDS_REGS_H__ + +#include "intel_display_reg_defs.h" + +/* LVDS port control */ +#define LVDS _MMIO(0x61180) +/* + * Enables the LVDS port. This bit must be set before DPLLs are enabled, as + * the DPLL semantics change when the LVDS is assigned to that pipe. + */ +#define LVDS_PORT_EN REG_BIT(31) +/* Selects pipe B for LVDS data. Must be set on pre-965. */ +#define LVDS_PIPE_SEL_MASK REG_BIT(30) +#define LVDS_PIPE_SEL(pipe) REG_FIELD_PREP(LVDS_PIPE_SEL_MASK, (pipe)) +#define LVDS_PIPE_SEL_MASK_CPT REG_GENMASK(30, 29) +#define LVDS_PIPE_SEL_CPT(pipe) REG_FIELD_PREP(LVDS_PIPE_SEL_MASK_CPT, (pipe)) +/* LVDS dithering flag on 965/g4x platform */ +#define LVDS_ENABLE_DITHER REG_BIT(25) +/* LVDS sync polarity flags. Set to invert (i.e. negative) */ +#define LVDS_VSYNC_POLARITY REG_BIT(21) +#define LVDS_HSYNC_POLARITY REG_BIT(20) + +/* Enable border for unscaled (or aspect-scaled) display */ +#define LVDS_BORDER_ENABLE REG_BIT(15) +/* + * Enables the A0-A2 data pairs and CLKA, containing 18 bits of color data per + * pixel. + */ +#define LVDS_A0A2_CLKA_POWER_MASK REG_GENMASK(9, 8) +#define LVDS_A0A2_CLKA_POWER_DOWN REG_FIELD_PREP(LVDS_A0A2_CLKA_POWER_MASK, 0) +#define LVDS_A0A2_CLKA_POWER_UP REG_FIELD_PREP(LVDS_A0A2_CLKA_POWER_MASK, 3) +/* + * Controls the A3 data pair, which contains the additional LSBs for 24 bit + * mode. Only enabled if LVDS_A0A2_CLKA_POWER_UP also indicates it should be + * on. + */ +#define LVDS_A3_POWER_MASK REG_GENMASK(7, 6) +#define LVDS_A3_POWER_DOWN REG_FIELD_PREP(LVDS_A3_POWER_MASK, 0) +#define LVDS_A3_POWER_UP REG_FIELD_PREP(LVDS_A3_POWER_MASK, 3) +/* + * Controls the CLKB pair. This should only be set when LVDS_B0B3_POWER_UP + * is set. + */ +#define LVDS_CLKB_POWER_MASK REG_GENMASK(5, 4) +#define LVDS_CLKB_POWER_DOWN REG_FIELD_PREP(LVDS_CLKB_POWER_MASK, 0) +#define LVDS_CLKB_POWER_UP REG_FIELD_PREP(LVDS_CLKB_POWER_MASK, 3) +/* + * Controls the B0-B3 data pairs. This must be set to match the DPLL p2 + * setting for whether we are in dual-channel mode. The B3 pair will + * additionally only be powered up when LVDS_A3_POWER_UP is set. + */ +#define LVDS_B0B3_POWER_MASK REG_GENMASK(3, 2) +#define LVDS_B0B3_POWER_DOWN REG_FIELD_PREP(LVDS_B0B3_POWER_MASK, 0) +#define LVDS_B0B3_POWER_UP REG_FIELD_PREP(LVDS_B0B3_POWER_MASK, 3) + +#define PCH_LVDS _MMIO(0xe1180) +#define LVDS_DETECTED REG_BIT(1) + +#endif /* __INTEL_LVDS_REGS_H__ */ |