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drm/i915/dsb: Define the contents of some intstructions bit better

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Add some defines to specify what goes inside certain DSB
instructions.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230606191504.18099-6-ville.syrjala@linux.intel.com
Reviewed-by: Uma Shankar <uma.shankar@intel.com>
This commit is contained in:
Ville Syrjälä 2023-06-06 22:14:50 +03:00
parent 357832b5cc
commit 0c1c7a6499
1 changed files with 8 additions and 4 deletions
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12
drivers/gpu/drm/i915/display/intel_dsb.c
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@ -70,17 +70,21 @@ struct intel_dsb {
#define DSB_OPCODE_SHIFT 24
#define DSB_OPCODE_NOOP 0x0
#define DSB_OPCODE_MMIO_WRITE 0x1
#define DSB_BYTE_EN 0xf
#define DSB_BYTE_EN_SHIFT 20
#define DSB_REG_VALUE_MASK 0xfffff
#define DSB_OPCODE_WAIT_USEC 0x2
#define DSB_OPCODE_WAIT_LINES 0x3
#define DSB_OPCODE_WAIT_SCANLINE 0x3
#define DSB_OPCODE_WAIT_VBLANKS 0x4
#define DSB_OPCODE_WAIT_DSL_IN 0x5
#define DSB_OPCODE_WAIT_DSL_OUT 0x6
#define DSB_SCANLINE_UPPER_SHIFT 20
#define DSB_SCANLINE_LOWER_SHIFT 0
#define DSB_OPCODE_INTERRUPT 0x7
#define DSB_OPCODE_INDEXED_WRITE 0x9
/* see DSB_REG_VALUE_MASK */
#define DSB_OPCODE_POLL 0xA
#define DSB_BYTE_EN 0xF
#define DSB_BYTE_EN_SHIFT 20
#define DSB_REG_VALUE_MASK 0xfffff
/* see DSB_REG_VALUE_MASK */
static bool assert_dsb_has_room(struct intel_dsb *dsb)
{