/*
* acquire ctrl->mutex first
*/
void mdss_dsi_clk_ctrl(struct mdss_dsi_ctrl_pdata *ctrl, int enable)
{
mutex_lock(&ctrl->mutex);
if (enable) {
if (ctrl->clk_cnt == 0) {
mdss_dsi_enable_bus_clocks(ctrl);
mdss_dsi_prepare_clocks(ctrl);
mdss_dsi_clk_enable(ctrl);
}
ctrl->clk_cnt++;
} else {
if (ctrl->clk_cnt) {
ctrl->clk_cnt--;
if (ctrl->clk_cnt == 0) {
mdss_dsi_clk_disable(ctrl);
mdss_dsi_unprepare_clocks(ctrl);
mdss_dsi_disable_bus_clocks(ctrl);
}
}
}
pr_debug("%s: ctrl ndx=%d enabled=%d clk_cnt=%d\n",
__func__, ctrl->ndx, enable, ctrl->clk_cnt);
mutex_unlock(&ctrl->mutex);
}
int mdss_dsi_clk_ctrl(struct mdss_dsi_ctrl_pdata *ctrl, int enable)
{
int rc = 0;
mutex_lock(&ctrl->mutex);
if (enable) {
if (ctrl->clk_cnt == 0) {
rc = mdss_dsi_enable_bus_clocks(ctrl);
if (rc) {
pr_err("%s: failed to enable bus clks. rc=%d\n",
__func__, rc);
goto error;
}
rc = mdss_dsi_clk_set_rate(ctrl);
if (rc) {
pr_err("%s: failed to set clk rates. rc=%d\n",
__func__, rc);
mdss_dsi_disable_bus_clocks(ctrl);
goto error;
}
rc = mdss_dsi_clk_prepare(ctrl);
if (rc) {
pr_err("%s: failed to prepare clks. rc=%d\n",
__func__, rc);
mdss_dsi_disable_bus_clocks(ctrl);
goto error;
}
rc = mdss_dsi_clk_enable(ctrl);
if (rc) {
pr_err("%s: failed to enable clks. rc=%d\n",
__func__, rc);
mdss_dsi_clk_unprepare(ctrl);
mdss_dsi_disable_bus_clocks(ctrl);
goto error;
}
}
ctrl->clk_cnt++;
} else {
if (ctrl->clk_cnt) {
ctrl->clk_cnt--;
if (ctrl->clk_cnt == 0) {
mdss_dsi_clk_disable(ctrl);
mdss_dsi_clk_unprepare(ctrl);
mdss_dsi_disable_bus_clocks(ctrl);
}
}
}
pr_debug("%s: ctrl ndx=%d enabled=%d clk_cnt=%d\n",
__func__, ctrl->ndx, enable, ctrl->clk_cnt);
error:
mutex_unlock(&ctrl->mutex);
return rc;
}
static int mdss_dsi_off(struct mdss_panel_data *pdata)
{
int ret = 0;
struct mdss_dsi_ctrl_pdata *ctrl_pdata = NULL;
if (pdata == NULL) {
pr_err("%s: Invalid input data\n", __func__);
return -EINVAL;
}
if (!pdata->panel_info.panel_power_on) {
pr_warn("%s:%d Panel already off.\n", __func__, __LINE__);
return -EPERM;
}
pdata->panel_info.panel_power_on = 0;
ctrl_pdata = container_of(pdata, struct mdss_dsi_ctrl_pdata,
panel_data);
pr_debug("%s+: ctrl=%p ndx=%d\n", __func__,
ctrl_pdata, ctrl_pdata->ndx);
if (pdata->panel_info.type == MIPI_CMD_PANEL)
mdss_dsi_clk_ctrl(ctrl_pdata, 1);
/* disable DSI controller */
mdss_dsi_controller_cfg(0, pdata);
mdss_dsi_clk_ctrl(ctrl_pdata, 0);
ret = mdss_dsi_enable_bus_clocks(ctrl_pdata);
if (ret) {
pr_err("%s: failed to enable bus clocks. rc=%d\n", __func__,
ret);
mdss_dsi_panel_power_on(pdata, 0);
return ret;
}
/* disable DSI phy */
mdss_dsi_phy_enable(ctrl_pdata, 0);
mdss_dsi_disable_bus_clocks(ctrl_pdata);
ret = mdss_dsi_panel_power_on(pdata, 0);
if (ret) {
pr_err("%s: Panel power off failed\n", __func__);
return ret;
}
pr_debug("%s-:\n", __func__);
return ret;
}
static int mdss_dsi_enable_clks(struct mdss_dsi_ctrl_pdata *ctrl)
{
int rc = 0;
rc = mdss_dsi_enable_bus_clocks(ctrl);
if (rc) {
pr_err("%s: failed to enable bus clks. rc=%d\n",
__func__, rc);
goto error;
}
rc = mdss_dsi_clk_set_rate(ctrl);
if (rc) {
pr_err("%s: failed to set clk rates. rc=%d\n",
__func__, rc);
mdss_dsi_disable_bus_clocks(ctrl);
goto error;
}
rc = mdss_dsi_clk_prepare(ctrl);
if (rc) {
pr_err("%s: failed to prepare clks. rc=%d\n",
__func__, rc);
mdss_dsi_disable_bus_clocks(ctrl);
goto error;
}
rc = mdss_dsi_clk_enable(ctrl);
if (rc) {
pr_err("%s: failed to enable clks. rc=%d\n",
__func__, rc);
mdss_dsi_clk_unprepare(ctrl);
mdss_dsi_disable_bus_clocks(ctrl);
goto error;
}
error:
return rc;
}
int mdss_dsi_on(struct mdss_panel_data *pdata)
{
int ret = 0;
u32 clk_rate;
struct mdss_panel_info *pinfo;
struct mipi_panel_info *mipi;
u32 hbp, hfp, vbp, vfp, hspw, vspw, width, height;
u32 ystride, bpp, data, dst_bpp;
u32 dummy_xres, dummy_yres;
struct mdss_dsi_ctrl_pdata *ctrl_pdata = NULL;
u32 hsync_period, vsync_period;
if (pdata == NULL) {
pr_err("%s: Invalid input data\n", __func__);
return -EINVAL;
}
if (pdata->panel_info.panel_power_on) {
pr_warn("%s:%d Panel already on.\n", __func__, __LINE__);
return 0;
}
ctrl_pdata = container_of(pdata, struct mdss_dsi_ctrl_pdata,
panel_data);
pr_debug("%s+: ctrl=%p ndx=%d\n",
__func__, ctrl_pdata, ctrl_pdata->ndx);
pinfo = &pdata->panel_info;
ret = mdss_dsi_panel_power_on(pdata, 1);
if (ret) {
pr_err("%s: Panel power on failed\n", __func__);
return ret;
}
pdata->panel_info.panel_power_on = 1;
ret = mdss_dsi_enable_bus_clocks(ctrl_pdata);
if (ret) {
pr_err("%s: failed to enable bus clocks. rc=%d\n", __func__,
ret);
mdss_dsi_panel_power_on(pdata, 0);
return ret;
}
mdss_dsi_phy_sw_reset((ctrl_pdata->ctrl_base));
mdss_dsi_phy_init(pdata);
mdss_dsi_disable_bus_clocks(ctrl_pdata);
mdss_dsi_clk_ctrl(ctrl_pdata, 1);
clk_rate = pdata->panel_info.clk_rate;
clk_rate = min(clk_rate, pdata->panel_info.clk_max);
dst_bpp = pdata->panel_info.fbc.enabled ?
(pdata->panel_info.fbc.target_bpp) : (pinfo->bpp);
hbp = mult_frac(pdata->panel_info.lcdc.h_back_porch, dst_bpp,
pdata->panel_info.bpp);
hfp = mult_frac(pdata->panel_info.lcdc.h_front_porch, dst_bpp,
pdata->panel_info.bpp);
vbp = mult_frac(pdata->panel_info.lcdc.v_back_porch, dst_bpp,
pdata->panel_info.bpp);
vfp = mult_frac(pdata->panel_info.lcdc.v_front_porch, dst_bpp,
pdata->panel_info.bpp);
hspw = mult_frac(pdata->panel_info.lcdc.h_pulse_width, dst_bpp,
pdata->panel_info.bpp);
vspw = pdata->panel_info.lcdc.v_pulse_width;
width = mult_frac(pdata->panel_info.xres, dst_bpp,
pdata->panel_info.bpp);
height = pdata->panel_info.yres;
if (pdata->panel_info.type == MIPI_VIDEO_PANEL) {
dummy_xres = pdata->panel_info.lcdc.xres_pad;
dummy_yres = pdata->panel_info.lcdc.yres_pad;
}
vsync_period = vspw + vbp + height + dummy_yres + vfp;
hsync_period = hspw + hbp + width + dummy_xres + hfp;
mipi = &pdata->panel_info.mipi;
if (pdata->panel_info.type == MIPI_VIDEO_PANEL) {
MIPI_OUTP((ctrl_pdata->ctrl_base) + 0x24,
((hspw + hbp + width + dummy_xres) << 16 |
(hspw + hbp)));
MIPI_OUTP((ctrl_pdata->ctrl_base) + 0x28,
((vspw + vbp + height + dummy_yres) << 16 |
(vspw + vbp)));
MIPI_OUTP((ctrl_pdata->ctrl_base) + 0x2C,
((vsync_period - 1) << 16)
| (hsync_period - 1));
MIPI_OUTP((ctrl_pdata->ctrl_base) + 0x30, (hspw << 16));
MIPI_OUTP((ctrl_pdata->ctrl_base) + 0x34, 0);
MIPI_OUTP((ctrl_pdata->ctrl_base) + 0x38, (vspw << 16));
} else { /* command mode */
if (mipi->dst_format == DSI_CMD_DST_FORMAT_RGB888)
bpp = 3;
else if (mipi->dst_format == DSI_CMD_DST_FORMAT_RGB666)
bpp = 3;
else if (mipi->dst_format == DSI_CMD_DST_FORMAT_RGB565)
bpp = 2;
else
bpp = 3; /* Default format set to RGB888 */
ystride = width * bpp + 1;
/* DSI_COMMAND_MODE_MDP_STREAM_CTRL */
data = (ystride << 16) | (mipi->vc << 8) | DTYPE_DCS_LWRITE;
MIPI_OUTP((ctrl_pdata->ctrl_base) + 0x60, data);
MIPI_OUTP((ctrl_pdata->ctrl_base) + 0x58, data);
/* DSI_COMMAND_MODE_MDP_STREAM_TOTAL */
data = height << 16 | width;
MIPI_OUTP((ctrl_pdata->ctrl_base) + 0x64, data);
MIPI_OUTP((ctrl_pdata->ctrl_base) + 0x5C, data);
}
mdss_dsi_sw_reset(pdata);
mdss_dsi_host_init(mipi, pdata);
if (mipi->force_clk_lane_hs) {
u32 tmp;
tmp = MIPI_INP((ctrl_pdata->ctrl_base) + 0xac);
tmp |= (1<<28);
MIPI_OUTP((ctrl_pdata->ctrl_base) + 0xac, tmp);
wmb();
}
if (pdata->panel_info.type == MIPI_CMD_PANEL)
mdss_dsi_clk_ctrl(ctrl_pdata, 0);
pr_debug("%s-:\n", __func__);
return 0;
}
static int mdss_dsi_off(struct mdss_panel_data *pdata)
{
int ret = 0;
struct mdss_dsi_ctrl_pdata *ctrl_pdata = NULL;
struct mdss_panel_info *panel_info = NULL;
if (pdata == NULL) {
pr_err("%s: Invalid input data\n", __func__);
return -EINVAL;
}
if (!pdata->panel_info.panel_power_on) {
pr_warn("%s:%d Panel already off.\n", __func__, __LINE__);
return -EPERM;
}
pdata->panel_info.panel_power_on = 0;
ctrl_pdata = container_of(pdata, struct mdss_dsi_ctrl_pdata,
panel_data);
panel_info = &ctrl_pdata->panel_data.panel_info;
pr_debug("%s+: ctrl=%p ndx=%d\n", __func__,
ctrl_pdata, ctrl_pdata->ndx);
if (pdata->panel_info.type == MIPI_CMD_PANEL)
mdss_dsi_clk_ctrl(ctrl_pdata, 1);
/* disable DSI controller */
mdss_dsi_controller_cfg(0, pdata);
mdss_dsi_clk_ctrl(ctrl_pdata, 0);
ret = mdss_dsi_enable_bus_clocks(ctrl_pdata);
if (ret) {
pr_err("%s: failed to enable bus clocks. rc=%d\n", __func__,
ret);
mdss_dsi_panel_power_on(pdata, 0);
return ret;
}
/* disable DSI phy */
mdss_dsi_phy_enable(ctrl_pdata->ctrl_base, 0);
mdss_dsi_disable_bus_clocks(ctrl_pdata);
ret = mdss_dsi_panel_power_on(pdata, 0);
if (ret) {
pr_err("%s: Panel power off failed\n", __func__);
return ret;
}
if (panel_info->dynamic_fps
&& (panel_info->dfps_update == DFPS_SUSPEND_RESUME_MODE)
&& (panel_info->new_fps != panel_info->mipi.frame_rate))
panel_info->mipi.frame_rate = panel_info->new_fps;
pr_debug("%s-:\n", __func__);
return ret;
}
static int mdss_dsi_enable_clks(struct mdss_dsi_ctrl_pdata *ctrl)
{
int rc = 0;
#if defined(CONFIG_FB_MSM_MIPI_SAMSUNG_OCTA_CMD_WQXGA_S6TNMR7_PT_PANEL)
rc = mdss_dsi_clk_set_rate(ctrl);
if (rc) {
pr_err("%s: failed to set clk rates. rc=%d\n",
__func__, rc);
goto error;
}
rc = mdss_dsi_clk_prepare(ctrl);
if (rc) {
pr_err("%s: failed to prepare clks. rc=%d\n",
__func__, rc);
goto error;
}
rc = mdss_dsi_clk_enable(ctrl);
if (rc) {
pr_err("%s: failed to enable clks. rc=%d\n",
__func__, rc);
mdss_dsi_clk_unprepare(ctrl);
goto error;
}
#else
rc = mdss_dsi_enable_bus_clocks(ctrl);
if (rc) {
pr_err("%s: failed to enable bus clks. rc=%d\n",
__func__, rc);
goto error;
}
rc = mdss_dsi_clk_set_rate(ctrl);
if (rc) {
pr_err("%s: failed to set clk rates. rc=%d\n",
__func__, rc);
mdss_dsi_disable_bus_clocks(ctrl);
goto error;
}
rc = mdss_dsi_clk_prepare(ctrl);
if (rc) {
pr_err("%s: failed to prepare clks. rc=%d\n",
__func__, rc);
mdss_dsi_disable_bus_clocks(ctrl);
goto error;
}
rc = mdss_dsi_clk_enable(ctrl);
if (rc) {
pr_err("%s: failed to enable clks. rc=%d\n",
__func__, rc);
mdss_dsi_clk_unprepare(ctrl);
mdss_dsi_disable_bus_clocks(ctrl);
goto error;
}
#endif
error:
return rc;
}
