evie/android_kernel_oneplus_msm8998
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msm: mdss: add compression_mode and pps dcs_type support

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Two new DCS types, compression_mode (0x03) and pps (0x0a)
are introduced to support DCS (Display Stream Compression).
Add process those two new dcs types to support DSC.

Change-Id: Ibbd90c7c84598ba24a5919174bb547e851cc4754
Signed-off-by: Kuogee Hsieh <khsieh@codeaurora.org>
This commit is contained in:
Kuogee Hsieh 2015-04-03 17:56:46 -07:00 • committed by David Keitel
parent 3d2877e73b
commit fe0e12f81c
2 changed files with 80 additions and 2 deletions
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77
drivers/video/fbdev/msm/mdss_dsi_cmd.c
View file

@ -379,6 +379,50 @@ static int mdss_dsi_cm_on(struct dsi_buf *dp, struct dsi_cmd_desc *cm)
return DSI_HOST_HDR_SIZE; /* 4 bytes */
}
static int mdss_dsi_dsc_pps(struct dsi_buf *dp, struct dsi_cmd_desc *cm)
{
struct dsi_ctrl_hdr *dchdr;
char *bp;
u32 *hp;
int i, len = 0;
dchdr = &cm->dchdr;
bp = mdss_dsi_buf_reserve_hdr(dp, DSI_HOST_HDR_SIZE);
/*
* fill up payload
* dcs command byte (first byte) followed by payload
*/
if (cm->payload) {
len = dchdr->dlen;
len += 3;
len &= ~0x03; /* multipled by 4 */
for (i = 0; i < dchdr->dlen; i++)
*bp++ = cm->payload[i];
/* append 0xff to the end */
for (; i < len; i++)
*bp++ = 0xff;
dp->len += len;
}
/* fill up header */
hp = dp->hdr;
*hp = 0;
*hp = DSI_HDR_WC(dchdr->dlen);
*hp |= DSI_HDR_VC(dchdr->vc);
*hp |= DSI_HDR_LONG_PKT;
*hp |= DSI_HDR_DTYPE(DTYPE_PPS);
if (dchdr->last)
*hp |= DSI_HDR_LAST;
mdss_dsi_buf_push(dp, DSI_HOST_HDR_SIZE);
len += DSI_HOST_HDR_SIZE;
return len;
}
static int mdss_dsi_cm_off(struct dsi_buf *dp, struct dsi_cmd_desc *cm)
{
struct dsi_ctrl_hdr *dchdr;
@ -459,6 +503,33 @@ static int mdss_dsi_set_max_pktsize(struct dsi_buf *dp, struct dsi_cmd_desc *cm)
return DSI_HOST_HDR_SIZE; /* 4 bytes */
}
static int mdss_dsi_compression_mode(struct dsi_buf *dp,
struct dsi_cmd_desc *cm)
{
struct dsi_ctrl_hdr *dchdr;
u32 *hp;
dchdr = &cm->dchdr;
if (cm->payload == 0) {
pr_err("%s: NO payload error\n", __func__);
return 0;
}
mdss_dsi_buf_reserve_hdr(dp, DSI_HOST_HDR_SIZE);
hp = dp->hdr;
*hp = 0;
*hp |= DSI_HDR_VC(dchdr->vc);
*hp |= DSI_HDR_DTYPE(DTYPE_COMPRESSION_MODE);
if (dchdr->last)
*hp |= DSI_HDR_LAST;
*hp |= DSI_HDR_DATA1(cm->payload[0]);
*hp |= DSI_HDR_DATA2(cm->payload[1]);
mdss_dsi_buf_push(dp, DSI_HOST_HDR_SIZE);
return DSI_HOST_HDR_SIZE; /* 4 bytes */
}
static int mdss_dsi_null_pkt(struct dsi_buf *dp, struct dsi_cmd_desc *cm)
{
struct dsi_ctrl_hdr *dchdr;
@ -538,6 +609,12 @@ int mdss_dsi_cmd_dma_add(struct dsi_buf *dp, struct dsi_cmd_desc *cm)
case DTYPE_MAX_PKTSIZE:
len = mdss_dsi_set_max_pktsize(dp, cm);
break;
case DTYPE_PPS:
len = mdss_dsi_dsc_pps(dp, cm);
break;
case DTYPE_COMPRESSION_MODE:
len = mdss_dsi_compression_mode(dp, cm);
break;
case DTYPE_NULL_PKT:
len = mdss_dsi_null_pkt(dp, cm);
break;

5
drivers/video/fbdev/msm/mdss_dsi_cmd.h
View file

@ -1,4 +1,4 @@
/* Copyright (c) 2012-2014, The Linux Foundation. All rights reserved.
/* Copyright (c) 2012-2015, The Linux Foundation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
@ -58,7 +58,8 @@ struct dsi_buf {
#define DTYPE_GEN_READ1 0x14 /* long read, 1 parameter */
#define DTYPE_GEN_READ2 0x24 /* long read, 2 parameter */
#define DTYPE_TEAR_ON 0x35 /* set tear on */
#define DTYPE_COMPRESSION_MODE 0x07 /* compression mode */
#define DTYPE_PPS 0x0a /* pps */
#define DTYPE_MAX_PKTSIZE 0x37 /* set max packet size */
#define DTYPE_NULL_PKT 0x09 /* null packet, no data */
#define DTYPE_BLANK_PKT 0x19 /* blankiing packet, no data */