Commit 0c1c7a64 authored by Ville Syrjälä's avatar Ville Syrjälä
Browse files

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



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

Signed-off-by: default avatarVille Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230606191504.18099-6-ville.syrjala@linux.intel.com


Reviewed-by: default avatarUma Shankar <uma.shankar@intel.com>
parent 357832b5

drivers/gpu/drm/i915/display/intel_dsb.c

+8 −4
Original line number Diff line number Diff line
@@ -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)

{