/*
* 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)
{
int ret = 0;
struct mdss_dsi_ctrl_pdata *mctrl = NULL;
/*
* 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.
*/
if (mdss_dsi_sync_wait_enable(ctrl)) {
if (mdss_dsi_sync_wait_trigger(ctrl)) {
mctrl = mdss_dsi_get_other_ctrl(ctrl);
if (!mctrl) {
pr_warn("%s: sync_wait, NULL at other control\n",
__func__);
goto do_send;
}
mctrl->cmd_cfg_restore =
__mdss_dsi_cmd_mode_config(mctrl, 1);
} else if (!ctrl->do_unicast) {
/* broadcast cmds, let cmd_trigger do it */
return 0;
}
}
pr_debug("%s: ctrl=%d do_unicast=%d\n", __func__,
ctrl->ndx, ctrl->do_unicast);
do_send:
ctrl->cmd_cfg_restore = __mdss_dsi_cmd_mode_config(ctrl, 1);
ret = mdss_dsi_cmds2buf_tx(ctrl, cmds, cnt);
if (IS_ERR_VALUE(ret)) {
pr_err("%s: failed to call\n", __func__);
cnt = -EINVAL;
}
if (!ctrl->do_unicast) {
if (mctrl && mctrl->cmd_cfg_restore) {
__mdss_dsi_cmd_mode_config(mctrl, 0);
mctrl->cmd_cfg_restore = false;
}
if (ctrl->cmd_cfg_restore) {
__mdss_dsi_cmd_mode_config(ctrl, 0);
ctrl->cmd_cfg_restore = false;
}
}
return cnt;
}
/*
* 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)
{
int ret = 0;
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);
ret = mdss_dsi_cmds2buf_tx(ctrl, cmds, cnt);
if (IS_ERR_VALUE(ret)) {
pr_err("%s: failed to call\n", __func__);
cnt = -EINVAL;
}
if (mctrl_restore)
__mdss_dsi_cmd_mode_config(mctrl, 0);
if (ctrl_restore)
__mdss_dsi_cmd_mode_config(ctrl, 0);
return cnt;
}
/*
* 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)
{
int ret = 0;
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__);
#ifdef CONFIG_MACH_LGE
else{
mdelay(5);
mctrl_restore = __mdss_dsi_cmd_mode_config(mctrl, 1);
}
#else
else
mctrl_restore = __mdss_dsi_cmd_mode_config(mctrl, 1);
#endif
}
mctrl = mdss_dsi_get_master_ctrl();
if (!mctrl)
pr_warn("%s: Unable to get master control\n",
__func__);
#ifdef CONFIG_MACH_LGE
else{
mdelay(5);
mctrl_restore = __mdss_dsi_cmd_mode_config(mctrl, 1);
}
#else
else
mctrl_restore = __mdss_dsi_cmd_mode_config(mctrl, 1);
#endif
}
ctrl_restore = __mdss_dsi_cmd_mode_config(ctrl, 1);
ret = mdss_dsi_cmds2buf_tx(ctrl, cmds, cnt);
if (IS_ERR_VALUE(ret)) {
pr_err("%s: failed to call\n", __func__);
cnt = -EINVAL;
}
if (mctrl_restore)
__mdss_dsi_cmd_mode_config(mctrl, 0);
if (ctrl_restore)
__mdss_dsi_cmd_mode_config(ctrl, 0);
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;
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;
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) (unsigned long) 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;
}
