[RFC PATCH 3/4] etnaviv: Add a new function to emit a series of states to cmd stream

[Gert Wollny]

Signed-off-by: Gert Wollny <gert.wollny at collabora.com>
---
 drivers/gpu/drm/etnaviv/etnaviv_buffer.h | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/drivers/gpu/drm/etnaviv/etnaviv_buffer.h b/drivers/gpu/drm/etnaviv/etnaviv_buffer.h
index 0cb65a0c3bfc..b0a093b28774 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_buffer.h
+++ b/drivers/gpu/drm/etnaviv/etnaviv_buffer.h
@@ -41,6 +41,20 @@ static inline void CMD_LOAD_STATE(struct etnaviv_cmdbuf *buffer,
 	OUT(buffer, value);
 }
 
+static inline void CMD_LOAD_STATES_START(struct etnaviv_cmdbuf *buffer,
+					u32 reg, u32 nvalues)
+{
+	u32 index = reg >> VIV_FE_LOAD_STATE_HEADER_OFFSET__SHR;
+
+	buffer->user_size = ALIGN(buffer->user_size, 8);
+
+	/* write a register via cmd stream */
+	OUT(buffer, VIV_FE_LOAD_STATE_HEADER_OP_LOAD_STATE |
+	    VIV_FE_LOAD_STATE_HEADER_OFFSET(index) |
+	    (VIV_FE_LOAD_STATE_HEADER_COUNT(nvalues) &
+	     VIV_FE_LOAD_STATE_HEADER_COUNT__MASK));
+}
+
 static inline void CMD_END(struct etnaviv_cmdbuf *buffer)
 {
 	buffer->user_size = ALIGN(buffer->user_size, 8);
-- 
2.47.2