/*
* mdss_dsi_cmds_rx() - dcs read from panel
* @ctrl: dsi controller
* @cmds: read command descriptor
* @len: number of bytes to read back
*
* controller have 4 registers can hold 16 bytes of rxed data
* dcs packet: 4 bytes header + payload + 2 bytes crc
* 2 padding bytes add to payload to have payload length is mutipled by 4
* 1st read: 4 bytes header + 8 bytes payload + 2 padding + 2 crc
* 2nd read: 12 bytes payload + 2 padding + 2 crc
* 3rd read: 12 bytes payload + 2 padding + 2 crc
*
*/
int mdss_dsi_cmds_rx(struct mdss_dsi_ctrl_pdata *ctrl,
struct dsi_cmd_desc *cmds, int rlen)
{
int data_byte, rx_byte, dlen, end;
int short_response, diff, pkt_size, ret = 0;
struct dsi_buf *tp, *rp;
char cmd;
bool ctrl_restore = false, mctrl_restore = false;
struct mdss_dsi_ctrl_pdata *mctrl = NULL;
/*
* In broadcast mode, the configuration for master controller
* would be done when the slave controller is configured
*/
if (mdss_dsi_is_master_ctrl(ctrl)) {
pr_debug("%s: Broadcast mode enabled. skipping config for ctrl%d\n",
__func__, ctrl->ndx);
return 0;
}
/*
* Turn on cmd mode in order to transmit the commands.
* For video mode, do not send cmds more than one pixel line,
* since it only transmit it during BLLP.
* Ensure that for slave controller, master is also configured
*/
if (mdss_dsi_is_slave_ctrl(ctrl)) {
mctrl = mdss_dsi_get_master_ctrl();
if (!mctrl)
pr_warn("%s: Unable to get master control\n",
__func__);
else
mctrl_restore = __mdss_dsi_cmd_mode_config(mctrl, 1);
}
ctrl_restore = __mdss_dsi_cmd_mode_config(ctrl, 1);
if (rlen <= 2) {
short_response = 1;
pkt_size = rlen;
rx_byte = 4;
} else {
short_response = 0;
data_byte = 8; /* first read */
/*
* add extra 2 padding bytes to have overall
* packet size is multipe by 4. This also make
* sure 4 bytes dcs headerlocates within a
* 32 bits register after shift in.
*/
pkt_size = data_byte + 2;
rx_byte = data_byte + 8; /* 4 header + 2 crc + 2 padding*/
}
tp = &ctrl->tx_buf;
rp = &ctrl->rx_buf;
end = 0;
mdss_dsi_buf_init(rp);
while (!end) {
pr_debug("%s: rlen=%d pkt_size=%d rx_byte=%d\n",
__func__, rlen, pkt_size, rx_byte);
max_pktsize[0] = pkt_size;
mdss_dsi_buf_init(tp);
ret = mdss_dsi_cmd_dma_add(tp, &pkt_size_cmd);
if (!ret) {
pr_err("%s: failed to add max_pkt_size\n",
__func__);
rp->len = 0;
goto end;
}
mdss_dsi_wait4video_eng_busy(ctrl);
mdss_dsi_enable_irq(ctrl, DSI_CMD_TERM);
ret = mdss_dsi_cmd_dma_tx(ctrl, tp);
if (IS_ERR_VALUE(ret)) {
mdss_dsi_disable_irq(ctrl, DSI_CMD_TERM);
pr_err("%s: failed to tx max_pkt_size\n",
__func__);
rp->len = 0;
goto end;
}
pr_debug("%s: max_pkt_size=%d sent\n",
__func__, pkt_size);
mdss_dsi_buf_init(tp);
ret = mdss_dsi_cmd_dma_add(tp, cmds);
if (!ret) {
pr_err("%s: failed to add cmd = 0x%x\n",
__func__, cmds->payload[0]);
rp->len = 0;
goto end;
}
mdss_dsi_wait4video_eng_busy(ctrl); /* video mode only */
mdss_dsi_enable_irq(ctrl, DSI_CMD_TERM);
/* transmit read comamnd to client */
ret = mdss_dsi_cmd_dma_tx(ctrl, tp);
if (IS_ERR_VALUE(ret)) {
mdss_dsi_disable_irq(ctrl, DSI_CMD_TERM);
pr_err("%s: failed to tx cmd = 0x%x\n",
__func__, cmds->payload[0]);
rp->len = 0;
goto end;
}
/*
* once cmd_dma_done interrupt received,
* return data from client is ready and stored
* at RDBK_DATA register already
* since rx fifo is 16 bytes, dcs header is kept at first loop,
* after that dcs header lost during shift into registers
*/
dlen = mdss_dsi_cmd_dma_rx(ctrl, rp, rx_byte);
if (short_response)
break;
if (rlen <= data_byte) {
diff = data_byte - rlen;
end = 1;
} else {
diff = 0;
rlen -= data_byte;
}
dlen -= 2; /* 2 padding bytes */
dlen -= 2; /* 2 crc */
dlen -= diff;
rp->data += dlen; /* next start position */
rp->len += dlen;
data_byte = 12; /* NOT first read */
pkt_size += data_byte;
pr_debug("%s: rp data=%x len=%d dlen=%d diff=%d\n",
__func__, (int)rp->data, rp->len, dlen, diff);
}
rp->data = rp->start; /* move back to start position */
cmd = rp->data[0];
switch (cmd) {
case DTYPE_ACK_ERR_RESP:
pr_debug("%s: rx ACK_ERR_PACLAGE\n", __func__);
rp->len = 0;
case DTYPE_GEN_READ1_RESP:
case DTYPE_DCS_READ1_RESP:
mdss_dsi_short_read1_resp(rp);
break;
case DTYPE_GEN_READ2_RESP:
case DTYPE_DCS_READ2_RESP:
mdss_dsi_short_read2_resp(rp);
break;
case DTYPE_GEN_LREAD_RESP:
case DTYPE_DCS_LREAD_RESP:
mdss_dsi_long_read_resp(rp);
break;
default:
pr_warning("%s:Invalid response cmd\n", __func__);
rp->len = 0;
}
end:
if (mctrl_restore)
__mdss_dsi_cmd_mode_config(mctrl, 0);
if (ctrl_restore)
__mdss_dsi_cmd_mode_config(ctrl, 0);
return rp->len;
}
static int mdss_dsi_cmds2buf_tx(struct mdss_dsi_ctrl_pdata *ctrl,
struct dsi_cmd_desc *cmds, int cnt)
{
struct dsi_buf *tp;
struct dsi_cmd_desc *cm;
struct dsi_ctrl_hdr *dchdr;
int len, wait, tot = 0;
#ifdef CONFIG_OLED_SUPPORT
#ifdef LGE_HRTIMER_OLED_PATCH
#else
struct timeval tv_start, tv_end;
long tv_diff;
int delay_count;
#endif
#endif
tp = &ctrl->tx_buf;
mdss_dsi_buf_init(tp);
cm = cmds;
len = 0;
while (cnt--) {
dchdr = &cm->dchdr;
mdss_dsi_buf_reserve(tp, len);
len = mdss_dsi_cmd_dma_add(tp, cm);
if (!len) {
pr_err("%s: failed to add cmd = 0x%x\n",
__func__, cm->payload[0]);
return -EINVAL;
}
tot += len;
if (dchdr->last) {
tp->data = tp->start; /* begin of buf */
wait = mdss_dsi_wait4video_eng_busy(ctrl);
mdss_dsi_enable_irq(ctrl, DSI_CMD_TERM);
len = mdss_dsi_cmd_dma_tx(ctrl, tp);
if (IS_ERR_VALUE(len)) {
mdss_dsi_disable_irq(ctrl, DSI_CMD_TERM);
pr_err("%s: failed to call cmd_dma_tx for cmd = 0x%x\n",
__func__, cmds->payload[0]);
return -EINVAL;
}
#ifdef CONFIG_OLED_SUPPORT
#ifdef LGE_HRTIMER_OLED_PATCH
if (!wait || dchdr->wait/* > VSYNC_PERIOD*/) {
pr_info("[Zee][OLED] mipi_dsi_tx(0x%X) start (target delay=%dms)\n", cm->payload[0], (int)dchdr->wait);
if (dchdr->wait > 5)
oled_hrtimer_delay(dchdr->wait);
else
mdelay(dchdr->wait);
pr_info("[Zee][OLED] mipi_dsi_tx(0x%X) finish (target delay=%dms)\n", cm->payload[0], (int)dchdr->wait);
}
#else
if (!wait || dchdr->wait/* > VSYNC_PERIOD*/) {
delay_count = 0;
do_gettimeofday(&tv_start);
do {
mdelay(1);
do_gettimeofday(&tv_end);
tv_diff = ((tv_end.tv_sec - tv_start.tv_sec) * 1000000) /* sec */
+ (tv_end.tv_usec - tv_start.tv_usec); /* usec */
delay_count++;
} while (dchdr->wait * 1000 > tv_diff);
pr_info("%s: 0x%X needs %d(ms) delay and real delay is %ld(us), delay_count(%d).\n", __func__, cm->payload[0], (int)dchdr->wait, tv_diff, delay_count);
}
#endif
#else
if (!wait || dchdr->wait > VSYNC_PERIOD)
usleep(dchdr->wait * 1000);
#endif
mdss_dsi_buf_init(tp);
len = 0;
}
cm++;
}
return tot;
}
/*
* mdss_dsi_cmds_rx() - dcs read from panel
* @ctrl: dsi controller
* @cmds: read command descriptor
* @len: number of bytes to read back
*
* controller have 4 registers can hold 16 bytes of rxed data
* dcs packet: 4 bytes header + payload + 2 bytes crc
* 2 padding bytes add to payload to have payload length is mutipled by 4
* 1st read: 4 bytes header + 8 bytes payload + 2 padding + 2 crc
* 2nd read: 12 bytes payload + 2 padding + 2 crc
* 3rd read: 12 bytes payload + 2 padding + 2 crc
*
*/
int mdss_dsi_cmds_rx(struct mdss_dsi_ctrl_pdata *ctrl,
struct dsi_cmd_desc *cmds, int rlen)
{
int data_byte, rx_byte, dlen, end;
int short_response, diff, pkt_size, ret = 0;
struct dsi_buf *tp, *rp;
char cmd;
u32 dsi_ctrl, data;
int video_mode;
u32 left_dsi_ctrl = 0;
bool left_ctrl_restore = false;
if (ctrl->shared_pdata.broadcast_enable) {
if (ctrl->ndx == DSI_CTRL_0) {
pr_debug("%s: Broadcast mode. 1st ctrl\n",
__func__);
return 0;
}
}
if (ctrl->shared_pdata.broadcast_enable) {
if ((ctrl->ndx == DSI_CTRL_1)
&& (left_ctrl_pdata != NULL)) {
left_dsi_ctrl = MIPI_INP(left_ctrl_pdata->ctrl_base
+ 0x0004);
video_mode = left_dsi_ctrl & 0x02; /* VIDEO_MODE_EN */
if (video_mode) {
data = left_dsi_ctrl | 0x04; /* CMD_MODE_EN */
MIPI_OUTP(left_ctrl_pdata->ctrl_base + 0x0004,
data);
left_ctrl_restore = true;
}
}
}
/* turn on cmd mode
* for video mode, do not send cmds more than
* one pixel line, since it only transmit it
* during BLLP.
*/
dsi_ctrl = MIPI_INP((ctrl->ctrl_base) + 0x0004);
video_mode = dsi_ctrl & 0x02; /* VIDEO_MODE_EN */
if (video_mode) {
data = dsi_ctrl | 0x04; /* CMD_MODE_EN */
MIPI_OUTP((ctrl->ctrl_base) + 0x0004, data);
}
if (rlen == 0) {
short_response = 1;
rx_byte = 4;
} else {
short_response = 0;
data_byte = 8; /* first read */
/*
* add extra 2 padding bytes to have overall
* packet size is multipe by 4. This also make
* sure 4 bytes dcs headerlocates within a
* 32 bits register after shift in.
*/
pkt_size = data_byte + 2;
rx_byte = data_byte + 8; /* 4 header + 2 crc + 2 padding*/
}
tp = &ctrl->tx_buf;
rp = &ctrl->rx_buf;
end = 0;
mdss_dsi_buf_init(rp);
while (!end) {
pr_debug("%s: rlen=%d pkt_size=%d rx_byte=%d\n",
__func__, rlen, pkt_size, rx_byte);
if (!short_response) {
max_pktsize[0] = pkt_size;
mdss_dsi_buf_init(tp);
ret = mdss_dsi_cmd_dma_add(tp, &pkt_size_cmd);
if (!ret) {
pr_err("%s: failed to add max_pkt_size\n",
__func__);
rp->len = 0;
goto end;
}
mdss_dsi_wait4video_eng_busy(ctrl);
mdss_dsi_enable_irq(ctrl, DSI_CMD_TERM);
ret = mdss_dsi_cmd_dma_tx(ctrl, tp);
if (IS_ERR_VALUE(ret)) {
mdss_dsi_disable_irq(ctrl, DSI_CMD_TERM);
pr_err("%s: failed to tx max_pkt_size\n",
__func__);
rp->len = 0;
goto end;
}
pr_debug("%s: max_pkt_size=%d sent\n",
__func__, pkt_size);
}
mdss_dsi_buf_init(tp);
ret = mdss_dsi_cmd_dma_add(tp, cmds);
if (!ret) {
pr_err("%s: failed to add cmd = 0x%x\n",
__func__, cmds->payload[0]);
rp->len = 0;
goto end;
}
mdss_dsi_wait4video_eng_busy(ctrl); /* video mode only */
mdss_dsi_enable_irq(ctrl, DSI_CMD_TERM);
/* transmit read comamnd to client */
ret = mdss_dsi_cmd_dma_tx(ctrl, tp);
if (IS_ERR_VALUE(ret)) {
mdss_dsi_disable_irq(ctrl, DSI_CMD_TERM);
pr_err("%s: failed to tx cmd = 0x%x\n",
__func__, cmds->payload[0]);
rp->len = 0;
goto end;
}
/*
* once cmd_dma_done interrupt received,
* return data from client is ready and stored
* at RDBK_DATA register already
* since rx fifo is 16 bytes, dcs header is kept at first loop,
* after that dcs header lost during shift into registers
*/
dlen = mdss_dsi_cmd_dma_rx(ctrl, rp, rx_byte);
if (short_response)
break;
if (rlen <= data_byte) {
diff = data_byte - rlen;
end = 1;
} else {
diff = 0;
rlen -= data_byte;
}
dlen -= 2; /* 2 padding bytes */
dlen -= 2; /* 2 crc */
dlen -= diff;
rp->data += dlen; /* next start position */
rp->len += dlen;
data_byte = 12; /* NOT first read */
pkt_size += data_byte;
pr_debug("%s: rp data=%x len=%d dlen=%d diff=%d\n",
__func__, (int)rp->data, rp->len, dlen, diff);
}
rp->data = rp->start; /* move back to start position */
cmd = rp->data[0];
switch (cmd) {
case DTYPE_ACK_ERR_RESP:
pr_debug("%s: rx ACK_ERR_PACLAGE\n", __func__);
rp->len = 0;
case DTYPE_GEN_READ1_RESP:
case DTYPE_DCS_READ1_RESP:
mdss_dsi_short_read1_resp(rp);
break;
case DTYPE_GEN_READ2_RESP:
case DTYPE_DCS_READ2_RESP:
mdss_dsi_short_read2_resp(rp);
break;
case DTYPE_GEN_LREAD_RESP:
case DTYPE_DCS_LREAD_RESP:
mdss_dsi_long_read_resp(rp);
break;
default:
pr_warning("%s:Invalid response cmd\n", __func__);
rp->len = 0;
}
end:
if (left_ctrl_restore)
MIPI_OUTP(left_ctrl_pdata->ctrl_base + 0x0004,
left_dsi_ctrl); /*restore */
if (video_mode)
MIPI_OUTP((ctrl->ctrl_base) + 0x0004,
dsi_ctrl); /* restore */
return rp->len;
}
int mdss_dsi_cmds_rx(struct mdss_dsi_ctrl_pdata *ctrl,
struct dsi_cmd_desc *cmds, int rlen)
{
int cnt, len, diff, pkt_size, ret = 0;
struct dsi_buf *tp, *rp;
int no_max_pkt_size;
char cmd;
u32 dsi_ctrl, data;
int video_mode;
u32 left_dsi_ctrl = 0;
bool left_ctrl_restore = false;
int rx_flags = 0;
bool long_rd_rsp_chk = false;
if (ctrl->shared_pdata.broadcast_enable) {
if (ctrl->ndx == DSI_CTRL_0) {
pr_debug("%s: Broadcast mode. 1st ctrl\n",
__func__);
return 0;
}
}
if (ctrl->shared_pdata.broadcast_enable) {
if ((ctrl->ndx == DSI_CTRL_1)
&& (left_ctrl_pdata != NULL)) {
left_dsi_ctrl = MIPI_INP(left_ctrl_pdata->ctrl_base
+ 0x0004);
video_mode = left_dsi_ctrl & 0x02; /* VIDEO_MODE_EN */
if (video_mode) {
data = left_dsi_ctrl | 0x04; /* CMD_MODE_EN */
MIPI_OUTP(left_ctrl_pdata->ctrl_base + 0x0004,
data);
left_ctrl_restore = true;
}
}
}
/* turn on cmd mode
* for video mode, do not send cmds more than
* one pixel line, since it only transmit it
* during BLLP.
*/
dsi_ctrl = MIPI_INP((ctrl->ctrl_base) + 0x0004);
video_mode = dsi_ctrl & 0x02; /* VIDEO_MODE_EN */
if (video_mode) {
data = dsi_ctrl | 0x04; /* CMD_MODE_EN */
MIPI_OUTP((ctrl->ctrl_base) + 0x0004, data);
}
no_max_pkt_size = rx_flags & CMD_REQ_NO_MAX_PKT_SIZE;
if (no_max_pkt_size)
rlen = ALIGN(rlen, 4); /* Only support rlen = 4*n */
len = rlen;
diff = 0;
if (len < 2)
cnt = 4; /* short read */
else if (len == 2) {
/* Response could be a short or long read */
cnt = 8;
long_rd_rsp_chk = true;
} else {
if (len > MDSS_DSI_LEN)
len = MDSS_DSI_LEN; /* 8 bytes at most */
len = ALIGN(len, 4); /* len 4 bytes align */
diff = len - rlen;
/*
* add extra 2 bytes to len to have overall
* packet size is multipe by 4. This also make
* sure 4 bytes dcs headerlocates within a
* 32 bits register after shift in.
* after all, len should be either 6 or 10.
*/
len += 2;
cnt = len + 6; /* 4 bytes header + 2 bytes crc */
}
tp = &ctrl->tx_buf;
rp = &ctrl->rx_buf;
if (!no_max_pkt_size) {
/* packet size need to be set at every read */
pkt_size = len;
max_pktsize[0] = pkt_size;
mdss_dsi_buf_init(tp);
ret = mdss_dsi_cmd_dma_add(tp, &pkt_size_cmd);
if (!ret) {
pr_err("%s: failed to call\n",
__func__);
rp->len = 0;
goto end;
}
mdss_dsi_wait4video_eng_busy(ctrl);
mdss_dsi_enable_irq(ctrl, DSI_CMD_TERM);
ret = mdss_dsi_cmd_dma_tx(ctrl, tp);
if (IS_ERR_VALUE(ret)) {
mdss_dsi_disable_irq(ctrl, DSI_CMD_TERM);
pr_err("%s: failed to call\n",
__func__);
rp->len = 0;
goto end;
}
pr_debug("%s: Max packet size sent\n", __func__);
}
mdss_dsi_buf_init(tp);
ret = mdss_dsi_cmd_dma_add(tp, cmds);
if (!ret) {
pr_err("%s: failed to call cmd_dma_add for cmd = 0x%x\n",
__func__, cmds->payload[0]);
rp->len = 0;
goto end;
}
mdss_dsi_wait4video_eng_busy(ctrl);
mdss_dsi_enable_irq(ctrl, DSI_CMD_TERM);
/* transmit read comamnd to client */
ret = mdss_dsi_cmd_dma_tx(ctrl, tp);
if (IS_ERR_VALUE(ret)) {
mdss_dsi_disable_irq(ctrl, DSI_CMD_TERM);
pr_err("%s: failed to call\n",
__func__);
rp->len = 0;
goto end;
}
/*
* once cmd_dma_done interrupt received,
* return data from client is ready and stored
* at RDBK_DATA register already
*/
mdss_dsi_buf_init(rp);
if (no_max_pkt_size) {
/*
* expect rlen = n * 4
* short alignement for start addr
*/
rp->data += 2;
}
mdss_dsi_cmd_dma_rx(ctrl, rp, cnt);
if (no_max_pkt_size) {
/*
* remove extra 2 bytes from previous
* rx transaction at shift register
* which was inserted during copy
* shift registers to rx buffer
* rx payload start from long alignment addr
*/
rp->data += 2;
}
if (long_rd_rsp_chk &&
rp->data[0] != DTYPE_GEN_LREAD_RESP &&
rp->data[0] != DTYPE_DCS_LREAD_RESP)
rp->data += 4;
cmd = rp->data[0];
switch (cmd) {
case DTYPE_ACK_ERR_RESP:
pr_debug("%s: rx ACK_ERR_PACLAGE\n", __func__);
rp->len = 0;
case DTYPE_GEN_READ1_RESP:
case DTYPE_DCS_READ1_RESP:
mdss_dsi_short_read1_resp(rp);
break;
case DTYPE_GEN_READ2_RESP:
case DTYPE_DCS_READ2_RESP:
mdss_dsi_short_read2_resp(rp);
break;
case DTYPE_GEN_LREAD_RESP:
case DTYPE_DCS_LREAD_RESP:
mdss_dsi_long_read_resp(rp);
if (!long_rd_rsp_chk) {
rp->len -= 2; /* extra 2 bytes added */
rp->len -= diff; /* align bytes */
}
break;
default:
pr_warning("%s:Invalid response cmd\n", __func__);
rp->len = 0;
}
end:
if (left_ctrl_restore)
MIPI_OUTP(left_ctrl_pdata->ctrl_base + 0x0004,
left_dsi_ctrl); /*restore */
if (video_mode)
MIPI_OUTP((ctrl->ctrl_base) + 0x0004,
dsi_ctrl); /* restore */
return rp->len;
}
int mdss_dsi_cmds_rx(struct mdss_dsi_ctrl_pdata *ctrl,
struct dsi_cmd_desc *cmds, int rlen, u32 rx_flags)
{
int cnt, len, diff, pkt_size;
struct dsi_buf *tp, *rp;
int no_max_pkt_size;
char cmd;
u32 dsi_ctrl;
u32 data;
int video_mode;
no_max_pkt_size = rx_flags & CMD_REQ_NO_MAX_PKT_SIZE;
if (no_max_pkt_size)
rlen = ALIGN(rlen, 4); /* Only support rlen = 4*n */
len = rlen;
diff = 0;
if (len <= 2)
cnt = 4; /* short read */
else {
if (len > MDSS_DSI_LEN)
len = MDSS_DSI_LEN; /* 8 bytes at most */
len = ALIGN(len, 4); /* len 4 bytes align */
diff = len - rlen;
/*
* add extra 2 bytes to len to have overall
* packet size is multipe by 4. This also make
* sure 4 bytes dcs headerlocates within a
* 32 bits register after shift in.
* after all, len should be either 6 or 10.
*/
len += 2;
cnt = len + 6; /* 4 bytes header + 2 bytes crc */
}
dsi_ctrl = MIPI_INP((ctrl->ctrl_base) + 0x0004);
video_mode = dsi_ctrl & 0x02; /* VIDEO_MODE_EN */
if (video_mode) {
data = dsi_ctrl | 0x04; /* CMD_MODE_EN */
MIPI_OUTP((ctrl->ctrl_base) + 0x0004, data);
}
tp = &ctrl->tx_buf;
rp = &ctrl->rx_buf;
if (!no_max_pkt_size) {
/* packet size need to be set at every read */
pkt_size = len;
max_pktsize[0] = pkt_size;
mdss_dsi_enable_irq(ctrl, DSI_CMD_TERM);
mdss_dsi_buf_init(tp);
mdss_dsi_cmd_dma_add(tp, &pkt_size_cmd);
mdss_dsi_cmd_dma_tx(ctrl, tp);
pr_debug("%s: Max packet size sent\n", __func__);
}
mdss_dsi_enable_irq(ctrl, DSI_CMD_TERM);
mdss_dsi_buf_init(tp);
mdss_dsi_cmd_dma_add(tp, cmds);
/* transmit read comamnd to client */
mdss_dsi_cmd_dma_tx(ctrl, tp);
/*
* once cmd_dma_done interrupt received,
* return data from client is ready and stored
* at RDBK_DATA register already
*/
mdss_dsi_buf_init(rp);
if (no_max_pkt_size) {
/*
* expect rlen = n * 4
* short alignement for start addr
*/
rp->data += 2;
}
mdss_dsi_cmd_dma_rx(ctrl, rp, cnt);
if (video_mode)
MIPI_OUTP((ctrl->ctrl_base) + 0x0004, dsi_ctrl); /* restore */
if (no_max_pkt_size) {
/*
* remove extra 2 bytes from previous
* rx transaction at shift register
* which was inserted during copy
* shift registers to rx buffer
* rx payload start from long alignment addr
*/
rp->data += 2;
}
cmd = rp->data[0];
switch (cmd) {
case DTYPE_ACK_ERR_RESP:
pr_debug("%s: rx ACK_ERR_PACLAGE\n", __func__);
break;
case DTYPE_GEN_READ1_RESP:
case DTYPE_DCS_READ1_RESP:
mdss_dsi_short_read1_resp(rp);
break;
case DTYPE_GEN_READ2_RESP:
case DTYPE_DCS_READ2_RESP:
mdss_dsi_short_read2_resp(rp);
break;
case DTYPE_GEN_LREAD_RESP:
case DTYPE_DCS_LREAD_RESP:
mdss_dsi_long_read_resp(rp);
rp->len -= 2; /* extra 2 bytes added */
rp->len -= diff; /* align bytes */
break;
default:
pr_debug("%s: Unknown cmd received\n", __func__);
break;
}
return rp->len;
}
/*
* mdss_dsi_cmds_tx:
* thread context only
*/
int mdss_dsi_cmds_tx(struct mdss_dsi_ctrl_pdata *ctrl,
struct dsi_cmd_desc *cmds, int cnt)
{
struct dsi_buf *tp;
struct dsi_cmd_desc *cm;
struct dsi_ctrl_hdr *dchdr;
u32 dsi_ctrl, data;
int i, video_mode;
#ifdef CONFIG_OLED_SUPPORT
struct timeval tv_start, tv_end;
long tv_diff;
int delay_count;
#endif
if (ctrl->shared_pdata.broadcast_enable) {
if (ctrl->ndx == DSI_CTRL_0) {
pr_debug("%s: Broadcast mode. 1st ctrl\n",
__func__);
return 0;
}
}
if (ctrl->shared_pdata.broadcast_enable) {
if ((ctrl->ndx == DSI_CTRL_1)
&& (left_ctrl_pdata != NULL)) {
dsi_ctrl = MIPI_INP(left_ctrl_pdata->ctrl_base
+ 0x0004);
video_mode = dsi_ctrl & 0x02; /* VIDEO_MODE_EN */
if (video_mode) {
data = dsi_ctrl | 0x04; /* CMD_MODE_EN */
MIPI_OUTP(left_ctrl_pdata->ctrl_base + 0x0004,
data);
}
}
}
/* turn on cmd mode
* for video mode, do not send cmds more than
* one pixel line, since it only transmit it
* during BLLP.
*/
dsi_ctrl = MIPI_INP((ctrl->ctrl_base) + 0x0004);
video_mode = dsi_ctrl & 0x02; /* VIDEO_MODE_EN */
if (video_mode) {
data = dsi_ctrl | 0x04; /* CMD_MODE_EN */
MIPI_OUTP((ctrl->ctrl_base) + 0x0004, data);
}
tp = &ctrl->tx_buf;
cm = cmds;
for (i = 0; i < cnt; i++) {
mdss_dsi_enable_irq(ctrl, DSI_CMD_TERM);
mdss_dsi_buf_init(tp);
mdss_dsi_cmd_dma_add(tp, cm);
mdss_dsi_cmd_dma_tx(ctrl, tp);
dchdr = &cm->dchdr;
#ifdef CONFIG_OLED_SUPPORT
if(dchdr->wait) {
delay_count = 0;
do_gettimeofday(&tv_start);
do {
mdelay(1);
do_gettimeofday(&tv_end);
tv_diff = ((tv_end.tv_sec - tv_start.tv_sec) * 1000000) // sec
+ (tv_end.tv_usec - tv_start.tv_usec); // usec
delay_count++;
} while(dchdr->wait * 1000 > tv_diff);
pr_info("%s: 0x%X needs %d(ms) delay and real delay is %ld(us), delay_count(%d).\n", __func__, cm->payload[0], (int)dchdr->wait, tv_diff, delay_count);
}
#else
if (dchdr->wait)
usleep(dchdr->wait * 1000);
#endif
cm++;
}
if (video_mode)
MIPI_OUTP((ctrl->ctrl_base) + 0x0004,
dsi_ctrl); /* restore */
return cnt;
}
/*
* mipi_dsi_cmds_single_tx:
* thread context only
*/
int mdss_dsi_cmds_single_tx(struct mdss_dsi_ctrl_pdata *pdata,
struct dsi_cmd_desc *cmds,
int cnt)
{
struct dsi_cmd_desc *cm;
unsigned int dsi_ctrl, ctrl;
int i, j = 0, k = 0, cmd_len = 0, video_mode;
char *cmds_tx;
char *bp;
struct mdss_dsi_ctrl_pdata *ctrl_pdata = pdata;
struct dsi_buf *tp = &ctrl_pdata->tx_buf;
pr_debug("%s:++\n",__func__);
/*Set Last Bit, only for last packet */
for (i = 0; i < cnt; i++) {
if(cmds[i].dchdr.dtype != DTYPE_GEN_LWRITE &&
cmds[i].dchdr.dtype != DTYPE_DCS_LWRITE ) {
pr_err("Single TX expects only Long Packets,"\
"Short packet encountered, return fail\n");
return -1;
}
cmds[i].dchdr.last = 0;
}
cmds[cnt-1].dchdr.last = 1;
/* turn on cmd mode
* for video mode, do not send cmds more than
* one pixel line, since it only transmit it
* during BLLP.
*/
if (ctrl_pdata->shared_pdata.broadcast_enable) {
if ((ctrl_pdata->ndx == DSI_CTRL_1)
&& (left_ctrl_pdata != NULL)) {
dsi_ctrl = MIPI_INP(left_ctrl_pdata->ctrl_base
+ 0x0004);
video_mode = dsi_ctrl & 0x02; /* VIDEO_MODE_EN */
if (video_mode) {
int data = dsi_ctrl | 0x04; /* CMD_MODE_EN */
MIPI_OUTP(left_ctrl_pdata->ctrl_base + 0x0004,
data);
}
}
}
dsi_ctrl = MIPI_INP((ctrl_pdata->ctrl_base) + 0x0004);
video_mode = dsi_ctrl & 0x02; /* VIDEO_MODE_EN */
if (video_mode) {
ctrl = dsi_ctrl | 0x04; /* CMD_MODE_EN */
MIPI_OUTP((ctrl_pdata->ctrl_base) + 0x0004, ctrl);
}
cm = cmds;
cmds_tx = kmalloc((1024 + DSI_HOST_HDR_SIZE) * cnt, GFP_KERNEL);
mdss_dsi_buf_init(tp);
mdss_dsi_enable_irq(pdata, DSI_CMD_TERM);
for (i = 0; i < cnt; i++) {
mdss_dsi_buf_init(tp);
mdss_dsi_cmd_dma_add(tp, cm);
bp = tp->data;
for (j = 0; j < tp->len; j++) {
*(cmds_tx + k) = *bp++;
k++;
}
cmd_len = cmd_len + tp->len;
cm++;
}
tp->data = cmds_tx;
tp->len = cmd_len;
mdss_dsi_cmd_dma_tx(ctrl_pdata, tp);
kfree(cmds_tx);
if (video_mode)
MIPI_OUTP((ctrl_pdata->ctrl_base) + 0x0004,
dsi_ctrl); /* restore */
return cnt;
}
/*
* mdss_dsi_cmds_rx() - dcs read from panel
* @ctrl: dsi controller
* @cmds: read command descriptor
* @len: number of bytes to read back
*
* controller have 4 registers can hold 16 bytes of rxed data
* dcs packet: 4 bytes header + payload + 2 bytes crc
* 2 padding bytes add to payload to have payload length is mutipled by 4
* 1st read: 4 bytes header + 8 bytes payload + 2 padding + 2 crc
* 2nd read: 12 bytes payload + 2 padding + 2 crc
* 3rd read: 12 bytes payload + 2 padding + 2 crc
*
*/
int mdss_dsi_cmds_rx(struct mdss_dsi_ctrl_pdata *ctrl,
struct dsi_cmd_desc *cmds, int rlen)
{
int data_byte, rx_byte, dlen, end;
int short_response, diff, pkt_size, ret = 0;
struct dsi_buf *tp, *rp;
char cmd;
u32 dsi_ctrl, data;
int video_mode;
u32 left_dsi_ctrl = 0;
bool left_ctrl_restore = false;
if (ctrl->shared_pdata.broadcast_enable) {
if (ctrl->ndx == DSI_CTRL_0) {
pr_debug("%s: Broadcast mode. 1st ctrl\n",
__func__);
return 0;
}
}
if (ctrl->shared_pdata.broadcast_enable) {
if ((ctrl->ndx == DSI_CTRL_1)
&& (left_ctrl_pdata != NULL)) {
left_dsi_ctrl = MIPI_INP(left_ctrl_pdata->ctrl_base
+ 0x0004);
video_mode = left_dsi_ctrl & 0x02; /* VIDEO_MODE_EN */
if (video_mode) {
data = left_dsi_ctrl | 0x04; /* CMD_MODE_EN */
MIPI_OUTP(left_ctrl_pdata->ctrl_base + 0x0004,
data);
left_ctrl_restore = true;
}
}
}
/* turn on cmd mode
* for video mode, do not send cmds more than
* one pixel line, since it only transmit it
* during BLLP.
*/
dsi_ctrl = MIPI_INP((ctrl->ctrl_base) + 0x0004);
video_mode = dsi_ctrl & 0x02; /* VIDEO_MODE_EN */
if (video_mode) {
data = dsi_ctrl | 0x04; /* CMD_MODE_EN */
MIPI_OUTP((ctrl->ctrl_base) + 0x0004, data);
}
/*fix qcom bug*/
#ifdef CONFIG_HUAWEI_KERNEL
if (rlen <= 2) {
#else
if (rlen == 0) {
#endif
short_response = 1;
rx_byte = 4;
} else {
short_response = 0;
data_byte = 8; /* first read */
/*
* add extra 2 padding bytes to have overall
* packet size is multipe by 4. This also make
* sure 4 bytes dcs headerlocates within a
* 32 bits register after shift in.
*/
pkt_size = data_byte + 2;
rx_byte = data_byte + 8; /* 4 header + 2 crc + 2 padding*/
}
tp = &ctrl->tx_buf;
rp = &ctrl->rx_buf;
end = 0;
mdss_dsi_buf_init(rp);
while (!end) {
pr_debug("%s: rlen=%d pkt_size=%d rx_byte=%d\n",
__func__, rlen, pkt_size, rx_byte);
if (!short_response) {
max_pktsize[0] = pkt_size;
mdss_dsi_buf_init(tp);
ret = mdss_dsi_cmd_dma_add(tp, &pkt_size_cmd);
if (!ret) {
pr_err("%s: failed to add max_pkt_size\n",
__func__);
rp->len = 0;
goto end;
}
mdss_dsi_wait4video_eng_busy(ctrl);
mdss_dsi_enable_irq(ctrl, DSI_CMD_TERM);
ret = mdss_dsi_cmd_dma_tx(ctrl, tp);
if (IS_ERR_VALUE(ret)) {
mdss_dsi_disable_irq(ctrl, DSI_CMD_TERM);
pr_err("%s: failed to tx max_pkt_size\n",
__func__);
rp->len = 0;
goto end;
}
pr_debug("%s: max_pkt_size=%d sent\n",
__func__, pkt_size);
}
mdss_dsi_buf_init(tp);
ret = mdss_dsi_cmd_dma_add(tp, cmds);
if (!ret) {
pr_err("%s: failed to add cmd = 0x%x\n",
__func__, cmds->payload[0]);
rp->len = 0;
goto end;
}
mdss_dsi_wait4video_eng_busy(ctrl); /* video mode only */
mdss_dsi_enable_irq(ctrl, DSI_CMD_TERM);
/* transmit read comamnd to client */
ret = mdss_dsi_cmd_dma_tx(ctrl, tp);
if (IS_ERR_VALUE(ret)) {
mdss_dsi_disable_irq(ctrl, DSI_CMD_TERM);
pr_err("%s: failed to tx cmd = 0x%x\n",
__func__, cmds->payload[0]);
rp->len = 0;
goto end;
}
/*
* once cmd_dma_done interrupt received,
* return data from client is ready and stored
* at RDBK_DATA register already
* since rx fifo is 16 bytes, dcs header is kept at first loop,
* after that dcs header lost during shift into registers
*/
dlen = mdss_dsi_cmd_dma_rx(ctrl, rp, rx_byte);
if (short_response)
break;
if (rlen <= data_byte) {
diff = data_byte - rlen;
end = 1;
} else {
diff = 0;
rlen -= data_byte;
}
dlen -= 2; /* 2 padding bytes */
dlen -= 2; /* 2 crc */
dlen -= diff;
rp->data += dlen; /* next start position */
rp->len += dlen;
data_byte = 12; /* NOT first read */
pkt_size += data_byte;
pr_debug("%s: rp data=%x len=%d dlen=%d diff=%d\n",
__func__, (int)rp->data, rp->len, dlen, diff);
}
rp->data = rp->start; /* move back to start position */
cmd = rp->data[0];
switch (cmd) {
case DTYPE_ACK_ERR_RESP:
pr_debug("%s: rx ACK_ERR_PACLAGE\n", __func__);
rp->len = 0;
case DTYPE_GEN_READ1_RESP:
case DTYPE_DCS_READ1_RESP:
mdss_dsi_short_read1_resp(rp);
break;
case DTYPE_GEN_READ2_RESP:
case DTYPE_DCS_READ2_RESP:
mdss_dsi_short_read2_resp(rp);
break;
case DTYPE_GEN_LREAD_RESP:
case DTYPE_DCS_LREAD_RESP:
mdss_dsi_long_read_resp(rp);
break;
default:
pr_warning("%s:Invalid response cmd\n", __func__);
rp->len = 0;
}
end:
if (left_ctrl_restore)
MIPI_OUTP(left_ctrl_pdata->ctrl_base + 0x0004,
left_dsi_ctrl); /*restore */
if (video_mode)
MIPI_OUTP((ctrl->ctrl_base) + 0x0004,
dsi_ctrl); /* restore */
return rp->len;
}
#define DMA_TX_TIMEOUT 200
static int mdss_dsi_cmd_dma_tx(struct mdss_dsi_ctrl_pdata *ctrl,
struct dsi_buf *tp)
{
int len, ret = 0;
int domain = MDSS_IOMMU_DOMAIN_UNSECURE;
char *bp;
unsigned long size, addr;
#ifdef CONFIG_HUAWEI_LCD
bool iommu_attached = false;
#endif
bp = tp->data;
len = ALIGN(tp->len, 4);
size = ALIGN(tp->len, SZ_4K);
if (is_mdss_iommu_attached()) {
int ret = msm_iommu_map_contig_buffer(tp->dmap,
mdss_get_iommu_domain(domain), 0,
size, SZ_4K, 0, &(addr));
if (IS_ERR_VALUE(ret)) {
pr_err("unable to map dma memory to iommu(%d)\n", ret);
return -ENOMEM;
}
#ifdef CONFIG_HUAWEI_LCD
iommu_attached = true;
#endif
} else {
addr = tp->dmap;
#ifdef CONFIG_HUAWEI_LCD
iommu_attached = false;
#endif
}
INIT_COMPLETION(ctrl->dma_comp);
if (ctrl->shared_pdata.broadcast_enable)
if ((ctrl->ndx == DSI_CTRL_1)
&& (left_ctrl_pdata != NULL)) {
MIPI_OUTP(left_ctrl_pdata->ctrl_base + 0x048, addr);
MIPI_OUTP(left_ctrl_pdata->ctrl_base + 0x04c, len);
}
MIPI_OUTP((ctrl->ctrl_base) + 0x048, addr);
MIPI_OUTP((ctrl->ctrl_base) + 0x04c, len);
wmb();
if (ctrl->shared_pdata.broadcast_enable)
if ((ctrl->ndx == DSI_CTRL_1)
&& (left_ctrl_pdata != NULL)) {
MIPI_OUTP(left_ctrl_pdata->ctrl_base + 0x090, 0x01);
}
MIPI_OUTP((ctrl->ctrl_base) + 0x090, 0x01); /* trigger */
wmb();
ret = wait_for_completion_timeout(&ctrl->dma_comp,
msecs_to_jiffies(DMA_TX_TIMEOUT));
if (ret == 0)
ret = -ETIMEDOUT;
else
ret = tp->len;
#ifdef CONFIG_HUAWEI_LCD
//unmap it when it have been maped at front
if (is_mdss_iommu_attached() && iommu_attached)
#else
if (is_mdss_iommu_attached())
#endif
msm_iommu_unmap_contig_buffer(addr,
mdss_get_iommu_domain(domain), 0, size);
return ret;
}
/*
* mdss_dsi_cmds_rx() - dcs read from panel
* @ctrl: dsi controller
* @cmds: read command descriptor
* @len: number of bytes to read back
*
* controller have 4 registers can hold 16 bytes of rxed data
* dcs packet: 4 bytes header + payload + 2 bytes crc
* 2 padding bytes add to payload to have payload length is mutipled by 4
* 1st read: 4 bytes header + 8 bytes payload + 2 padding + 2 crc
* 2nd read: 12 bytes payload + 2 padding + 2 crc
* 3rd read: 12 bytes payload + 2 padding + 2 crc
*
*/
int mdss_dsi_cmds_rx(struct mdss_dsi_ctrl_pdata *ctrl,
struct dsi_cmd_desc *cmds, int rlen)
{
int data_byte, rx_byte, dlen, end;
int short_response, len, diff, pkt_size, ret = 0;
struct dsi_buf *tp, *rp;
char cmd;
u32 dsi_ctrl, data;
int video_mode;
u32 left_dsi_ctrl = 0;
bool left_ctrl_restore = false;
int no_max_pkt_size = ctrl->panel_data.panel_info.mipi.no_max_pkt_size;
if (ctrl->shared_pdata.broadcast_enable) {
if (ctrl->ndx == DSI_CTRL_0) {
pr_debug("%s: Broadcast mode. 1st ctrl\n",
__func__);
return 0;
}
}
if (ctrl->shared_pdata.broadcast_enable) {
if ((ctrl->ndx == DSI_CTRL_1)
&& (left_ctrl_pdata != NULL)) {
left_dsi_ctrl = MIPI_INP(left_ctrl_pdata->ctrl_base
+ 0x0004);
video_mode = left_dsi_ctrl & 0x02; /* VIDEO_MODE_EN */
if (video_mode) {
data = left_dsi_ctrl | 0x04; /* CMD_MODE_EN */
MIPI_OUTP(left_ctrl_pdata->ctrl_base + 0x0004,
data);
left_ctrl_restore = true;
}
}
}
/* turn on cmd mode
* for video mode, do not send cmds more than
* one pixel line, since it only transmit it
* during BLLP.
*/
dsi_ctrl = MIPI_INP((ctrl->ctrl_base) + 0x0004);
video_mode = dsi_ctrl & 0x02; /* VIDEO_MODE_EN */
if (video_mode) {
data = dsi_ctrl | 0x04; /* CMD_MODE_EN */
MIPI_OUTP((ctrl->ctrl_base) + 0x0004, data);
}
if (no_max_pkt_size) {
/* Only support rlen = 4*n */
rlen = ALIGN(rlen, 4);
}
tp = &ctrl->tx_buf;
rp = &ctrl->rx_buf;
len = rlen;
diff = 0;
end = 0;
data_byte = 0;
if (len <= 2) {
rx_byte = 4; /* short read */
short_response = 1;
} else {
if (len > MDSS_DSI_LEN) {
data_byte = MDSS_DSI_LEN;
pkt_size = data_byte + 2;/* 8 bytes +2 padding */
rx_byte = data_byte + 8; /* 4 bytes header
+ 2 bytes crc + 2 Padding */
} else {
len = ALIGN(len, 4);
data_byte = len;
pkt_size = data_byte;
rx_byte = data_byte + 6; /* 4 bytes header
+ 2 bytes crc*/
}
short_response = 0;
}
mdss_dsi_buf_init(rp);
while (!end) {
pr_debug("%s: rlen=%d pkt_size=%d rx_byte=%d\n",
__func__, len, pkt_size, rx_byte);
if (!short_response) {
max_pktsize[0] = pkt_size;
mdss_dsi_buf_init(tp);
ret = mdss_dsi_cmd_dma_add(tp, &pkt_size_cmd);
if (!ret) {
pr_err("%s: failed to add max_pkt_size\n",
__func__);
rp->len = 0;
goto end;
}
mdss_dsi_wait4video_eng_busy(ctrl);
mdss_dsi_enable_irq(ctrl, DSI_CMD_TERM);
/* transmit read comamnd to client */
ret = mdss_dsi_cmd_dma_tx(ctrl, tp);
if (IS_ERR_VALUE(ret)) {
mdss_dsi_disable_irq(ctrl, DSI_CMD_TERM);
pr_err("%s: failed to tx max_pkt_size\n",
__func__);
rp->len = 0;
goto end;
}
pr_debug("%s: max_pkt_size=%d sent\n",
__func__, pkt_size);
}
mdss_dsi_buf_init(tp);
ret = mdss_dsi_cmd_dma_add(tp, cmds);
if (!ret) {
pr_err("%s: failed to add cmd = 0x%x\n",
__func__, cmds->payload[0]);
rp->len = 0;
goto end;
}
mdss_dsi_wait4video_eng_busy(ctrl); /* video mode only */
mdss_dsi_enable_irq(ctrl, DSI_CMD_TERM);
/* transmit read comamnd to client */
ret = mdss_dsi_cmd_dma_tx(ctrl, tp);
if (IS_ERR_VALUE(ret)) {
mdss_dsi_disable_irq(ctrl, DSI_CMD_TERM);
pr_err("%s: failed to tx cmd = 0x%x\n",
__func__, cmds->payload[0]);
rp->len = 0;
goto end;
}
/*
* once cmd_dma_done interrupt received,
* return data from client is ready and stored
* at RDBK_DATA register already
* since rx fifo is 16 bytes, dcs header is kept at first loop,
* after that dcs header lost during shift into registers
*/
dlen = mdss_dsi_cmd_dma_rx(ctrl, rp, rx_byte);
if (short_response)
break;
if (len <= data_byte) {
diff = data_byte - len;
end = 1;
} else {
diff = 0;
len -= data_byte;
}
dlen -= 2; /* 2 padding bytes */
dlen -= 2; /* 2 crc */
dlen -= diff;
rp->data += dlen; /* next start position */
rp->len += dlen;
data_byte = 12; /* NOT first read */
pkt_size += data_byte;
pr_debug("%s: rp data=%x len=%d dlen=%d diff=%d\n",
__func__, (int)rp->data, rp->len, dlen, diff);
}
rp->data = rp->start;
if (rlen <= MDSS_DSI_LEN &&
!no_max_pkt_size && !short_response) {
/*
* remove extra 2 bytes from previous
* rx transaction at shift register
* which was inserted during copy
* shift registers to rx buffer
* rx payload start from long alignment addr
*/
rp->data += 2;
}
cmd = rp->data[0];
pr_debug("%s: Read Response:0x%02X\n", __func__, cmd);
switch (cmd) {
case DTYPE_ACK_ERR_RESP:
pr_info("%s: rx ACK_ERR_PACKAGE\n", __func__);
rp->len = 0;
case DTYPE_GEN_READ1_RESP:
case DTYPE_DCS_READ1_RESP:
mdss_dsi_short_read1_resp(rp);
break;
case DTYPE_GEN_READ2_RESP:
case DTYPE_DCS_READ2_RESP:
mdss_dsi_short_read2_resp(rp);
break;
case DTYPE_GEN_LREAD_RESP:
case DTYPE_DCS_LREAD_RESP:
mdss_dsi_long_read_resp(rp);
break;
default:
pr_warning("%s:Invalid response cmd\n", __func__);
rp->len = 0;
}
end:
if (left_ctrl_restore)
MIPI_OUTP(left_ctrl_pdata->ctrl_base + 0x0004,
left_dsi_ctrl); /*restore */
if (video_mode)
MIPI_OUTP((ctrl->ctrl_base) + 0x0004,
dsi_ctrl); /* restore */
return rp->len;
}