3  * Samsung SoC MIPI DSI Master driver.
321 static inline void exynos_dsi_write(struct exynos_dsi *dsi, enum reg_idx idx,  in exynos_dsi_write()  argument
325 	writel(val, dsi->reg_base + dsi->driver_data->reg_ofs[idx]);  in exynos_dsi_write()
328 static inline u32 exynos_dsi_read(struct exynos_dsi *dsi, enum reg_idx idx)  in exynos_dsi_read()  argument
330 	return readl(dsi->reg_base + dsi->driver_data->reg_ofs[idx]);  in exynos_dsi_read()
510 	{ .compatible = "samsung,exynos3250-mipi-dsi",
512 	{ .compatible = "samsung,exynos4210-mipi-dsi",
514 	{ .compatible = "samsung,exynos5410-mipi-dsi",
516 	{ .compatible = "samsung,exynos5422-mipi-dsi",
518 	{ .compatible = "samsung,exynos5433-mipi-dsi",
523 static void exynos_dsi_wait_for_reset(struct exynos_dsi *dsi)  in exynos_dsi_wait_for_reset()  argument
525 	if (wait_for_completion_timeout(&dsi->completed, msecs_to_jiffies(300)))  in exynos_dsi_wait_for_reset()
528 	dev_err(dsi->dev, "timeout waiting for reset\n");  in exynos_dsi_wait_for_reset()
531 static void exynos_dsi_reset(struct exynos_dsi *dsi)  in exynos_dsi_reset()  argument
533 	u32 reset_val = dsi->driver_data->reg_values[RESET_TYPE];  in exynos_dsi_reset()
535 	reinit_completion(&dsi->completed);  in exynos_dsi_reset()
536 	exynos_dsi_write(dsi, DSIM_SWRST_REG, reset_val);  in exynos_dsi_reset()
543 static unsigned long exynos_dsi_pll_find_pms(struct exynos_dsi *dsi,  in exynos_dsi_pll_find_pms()  argument
546 	const struct exynos_dsi_driver_data *driver_data = dsi->driver_data;  in exynos_dsi_pll_find_pms()
597 static unsigned long exynos_dsi_set_pll(struct exynos_dsi *dsi,  in exynos_dsi_set_pll()  argument
600 	const struct exynos_dsi_driver_data *driver_data = dsi->driver_data;  in exynos_dsi_set_pll()
607 	fin = dsi->pll_clk_rate;  in exynos_dsi_set_pll()
608 	fout = exynos_dsi_pll_find_pms(dsi, fin, freq, &p, &m, &s);  in exynos_dsi_set_pll()
610 		dev_err(dsi->dev,  in exynos_dsi_set_pll()
614 	dev_dbg(dsi->dev, "PLL freq %lu, (p %d, m %d, s %d)\n", fout, p, m, s);  in exynos_dsi_set_pll()
617 			dsi->reg_base + driver_data->plltmr_reg);  in exynos_dsi_set_pll()
634 		dev_dbg(dsi->dev, "band %d\n", band);  in exynos_dsi_set_pll()
639 	exynos_dsi_write(dsi, DSIM_PLLCTRL_REG, reg);  in exynos_dsi_set_pll()
644 			dev_err(dsi->dev, "PLL failed to stabilize\n");  in exynos_dsi_set_pll()
647 		reg = exynos_dsi_read(dsi, DSIM_STATUS_REG);  in exynos_dsi_set_pll()
653 static int exynos_dsi_enable_clock(struct exynos_dsi *dsi)  in exynos_dsi_enable_clock()  argument
659 	hs_clk = exynos_dsi_set_pll(dsi, dsi->burst_clk_rate);  in exynos_dsi_enable_clock()
661 		dev_err(dsi->dev, "failed to configure DSI PLL\n");  in exynos_dsi_enable_clock()
666 	esc_div = DIV_ROUND_UP(byte_clk, dsi->esc_clk_rate);  in exynos_dsi_enable_clock()
674 	dev_dbg(dsi->dev, "hs_clk = %lu, byte_clk = %lu, esc_clk = %lu\n",  in exynos_dsi_enable_clock()
677 	reg = exynos_dsi_read(dsi, DSIM_CLKCTRL_REG);  in exynos_dsi_enable_clock()
684 			| DSIM_LANE_ESC_CLK_EN_DATA(BIT(dsi->lanes) - 1)  in exynos_dsi_enable_clock()
687 	exynos_dsi_write(dsi, DSIM_CLKCTRL_REG, reg);  in exynos_dsi_enable_clock()
692 static void exynos_dsi_set_phy_ctrl(struct exynos_dsi *dsi)  in exynos_dsi_set_phy_ctrl()  argument
694 	const struct exynos_dsi_driver_data *driver_data = dsi->driver_data;  in exynos_dsi_set_phy_ctrl()
704 	exynos_dsi_write(dsi, DSIM_PHYCTRL_REG, reg);  in exynos_dsi_set_phy_ctrl()
712 	exynos_dsi_write(dsi, DSIM_PHYTIMING_REG, reg);  in exynos_dsi_set_phy_ctrl()
732 	exynos_dsi_write(dsi, DSIM_PHYTIMING1_REG, reg);  in exynos_dsi_set_phy_ctrl()
745 	exynos_dsi_write(dsi, DSIM_PHYTIMING2_REG, reg);  in exynos_dsi_set_phy_ctrl()
748 static void exynos_dsi_disable_clock(struct exynos_dsi *dsi)  in exynos_dsi_disable_clock()  argument
752 	reg = exynos_dsi_read(dsi, DSIM_CLKCTRL_REG);  in exynos_dsi_disable_clock()
755 	exynos_dsi_write(dsi, DSIM_CLKCTRL_REG, reg);  in exynos_dsi_disable_clock()
757 	reg = exynos_dsi_read(dsi, DSIM_PLLCTRL_REG);  in exynos_dsi_disable_clock()
759 	exynos_dsi_write(dsi, DSIM_PLLCTRL_REG, reg);  in exynos_dsi_disable_clock()
762 static void exynos_dsi_enable_lane(struct exynos_dsi *dsi, u32 lane)  in exynos_dsi_enable_lane()  argument
764 	u32 reg = exynos_dsi_read(dsi, DSIM_CONFIG_REG);  in exynos_dsi_enable_lane()
765 	reg |= (DSIM_NUM_OF_DATA_LANE(dsi->lanes - 1) | DSIM_LANE_EN_CLK |  in exynos_dsi_enable_lane()
767 	exynos_dsi_write(dsi, DSIM_CONFIG_REG, reg);  in exynos_dsi_enable_lane()
770 static int exynos_dsi_init_link(struct exynos_dsi *dsi)  in exynos_dsi_init_link()  argument
772 	const struct exynos_dsi_driver_data *driver_data = dsi->driver_data;  in exynos_dsi_init_link()
778 	reg = exynos_dsi_read(dsi, DSIM_FIFOCTRL_REG);  in exynos_dsi_init_link()
780 	exynos_dsi_write(dsi, DSIM_FIFOCTRL_REG, reg);  in exynos_dsi_init_link()
785 	exynos_dsi_write(dsi, DSIM_FIFOCTRL_REG, reg);  in exynos_dsi_init_link()
788 	/* DSI configuration */  in exynos_dsi_init_link()
793 	 * If this bit is set[= MIPI_DSI_MODE_VIDEO], dsi will support video  in exynos_dsi_init_link()
796 	if (dsi->mode_flags & MIPI_DSI_MODE_VIDEO) {  in exynos_dsi_init_link()
803 		if (!(dsi->mode_flags & MIPI_DSI_MODE_VSYNC_FLUSH))  in exynos_dsi_init_link()
805 		if (dsi->mode_flags & MIPI_DSI_MODE_VIDEO_SYNC_PULSE)  in exynos_dsi_init_link()
807 		if (dsi->mode_flags & MIPI_DSI_MODE_VIDEO_BURST)  in exynos_dsi_init_link()
809 		if (dsi->mode_flags & MIPI_DSI_MODE_VIDEO_AUTO_VERT)  in exynos_dsi_init_link()
811 		if (dsi->mode_flags & MIPI_DSI_MODE_VIDEO_HSE)  in exynos_dsi_init_link()
813 		if (!(dsi->mode_flags & MIPI_DSI_MODE_VIDEO_HFP))  in exynos_dsi_init_link()
815 		if (!(dsi->mode_flags & MIPI_DSI_MODE_VIDEO_HBP))  in exynos_dsi_init_link()
817 		if (!(dsi->mode_flags & MIPI_DSI_MODE_VIDEO_HSA))  in exynos_dsi_init_link()
821 	if (!(dsi->mode_flags & MIPI_DSI_MODE_EOT_PACKET))  in exynos_dsi_init_link()
824 	switch (dsi->format) {  in exynos_dsi_init_link()
838 		dev_err(dsi->dev, "invalid pixel format\n");  in exynos_dsi_init_link()
851 			dsi->mode_flags & MIPI_DSI_CLOCK_NON_CONTINUOUS) {  in exynos_dsi_init_link()
854 	exynos_dsi_write(dsi, DSIM_CONFIG_REG, reg);  in exynos_dsi_init_link()
856 	lanes_mask = BIT(dsi->lanes) - 1;  in exynos_dsi_init_link()
857 	exynos_dsi_enable_lane(dsi, lanes_mask);  in exynos_dsi_init_link()
863 			dev_err(dsi->dev, "waiting for bus lanes timed out\n");  in exynos_dsi_init_link()
867 		reg = exynos_dsi_read(dsi, DSIM_STATUS_REG);  in exynos_dsi_init_link()
873 	reg = exynos_dsi_read(dsi, DSIM_ESCMODE_REG);  in exynos_dsi_init_link()
876 	exynos_dsi_write(dsi, DSIM_ESCMODE_REG, reg);  in exynos_dsi_init_link()
879 	exynos_dsi_write(dsi, DSIM_TIMEOUT_REG, reg);  in exynos_dsi_init_link()
884 static void exynos_dsi_set_display_mode(struct exynos_dsi *dsi)  in exynos_dsi_set_display_mode()  argument
886 	struct drm_display_mode *m = &dsi->encoder.crtc->state->adjusted_mode;  in exynos_dsi_set_display_mode()
887 	unsigned int num_bits_resol = dsi->driver_data->num_bits_resol;  in exynos_dsi_set_display_mode()
890 	if (dsi->mode_flags & MIPI_DSI_MODE_VIDEO) {  in exynos_dsi_set_display_mode()
894 		exynos_dsi_write(dsi, DSIM_MVPORCH_REG, reg);  in exynos_dsi_set_display_mode()
898 		exynos_dsi_write(dsi, DSIM_MHPORCH_REG, reg);  in exynos_dsi_set_display_mode()
902 		exynos_dsi_write(dsi, DSIM_MSYNC_REG, reg);  in exynos_dsi_set_display_mode()
907 	exynos_dsi_write(dsi, DSIM_MDRESOL_REG, reg);  in exynos_dsi_set_display_mode()
909 	dev_dbg(dsi->dev, "LCD size = %dx%d\n", m->hdisplay, m->vdisplay);  in exynos_dsi_set_display_mode()
912 static void exynos_dsi_set_display_enable(struct exynos_dsi *dsi, bool enable)  in exynos_dsi_set_display_enable()  argument
916 	reg = exynos_dsi_read(dsi, DSIM_MDRESOL_REG);  in exynos_dsi_set_display_enable()
921 	exynos_dsi_write(dsi, DSIM_MDRESOL_REG, reg);  in exynos_dsi_set_display_enable()
924 static int exynos_dsi_wait_for_hdr_fifo(struct exynos_dsi *dsi)  in exynos_dsi_wait_for_hdr_fifo()  argument
929 		u32 reg = exynos_dsi_read(dsi, DSIM_FIFOCTRL_REG);  in exynos_dsi_wait_for_hdr_fifo()
941 static void exynos_dsi_set_cmd_lpm(struct exynos_dsi *dsi, bool lpm)  in exynos_dsi_set_cmd_lpm()  argument
943 	u32 v = exynos_dsi_read(dsi, DSIM_ESCMODE_REG);  in exynos_dsi_set_cmd_lpm()
950 	exynos_dsi_write(dsi, DSIM_ESCMODE_REG, v);  in exynos_dsi_set_cmd_lpm()
953 static void exynos_dsi_force_bta(struct exynos_dsi *dsi)  in exynos_dsi_force_bta()  argument
955 	u32 v = exynos_dsi_read(dsi, DSIM_ESCMODE_REG);  in exynos_dsi_force_bta()
957 	exynos_dsi_write(dsi, DSIM_ESCMODE_REG, v);  in exynos_dsi_force_bta()
960 static void exynos_dsi_send_to_fifo(struct exynos_dsi *dsi,  in exynos_dsi_send_to_fifo()  argument
963 	struct device *dev = dsi->dev;  in exynos_dsi_send_to_fifo()
981 		exynos_dsi_write(dsi, DSIM_PAYLOAD_REG, reg);  in exynos_dsi_send_to_fifo()
996 		exynos_dsi_write(dsi, DSIM_PAYLOAD_REG, reg);  in exynos_dsi_send_to_fifo()
1005 	if (exynos_dsi_wait_for_hdr_fifo(dsi)) {  in exynos_dsi_send_to_fifo()
1011 		 dsi->state & DSIM_STATE_CMD_LPM)) {  in exynos_dsi_send_to_fifo()
1012 		exynos_dsi_set_cmd_lpm(dsi, xfer->flags & MIPI_DSI_MSG_USE_LPM);  in exynos_dsi_send_to_fifo()
1013 		dsi->state ^= DSIM_STATE_CMD_LPM;  in exynos_dsi_send_to_fifo()
1016 	exynos_dsi_write(dsi, DSIM_PKTHDR_REG, reg);  in exynos_dsi_send_to_fifo()
1019 		exynos_dsi_force_bta(dsi);  in exynos_dsi_send_to_fifo()
1022 static void exynos_dsi_read_from_fifo(struct exynos_dsi *dsi,  in exynos_dsi_read_from_fifo()  argument
1027 	struct device *dev = dsi->dev;  in exynos_dsi_read_from_fifo()
1032 		reg = exynos_dsi_read(dsi, DSIM_RXFIFO_REG);  in exynos_dsi_read_from_fifo()
1050 			dev_err(dev, "DSI Error Report: 0x%04x\n",  in exynos_dsi_read_from_fifo()
1071 		reg = exynos_dsi_read(dsi, DSIM_RXFIFO_REG);  in exynos_dsi_read_from_fifo()
1081 		reg = exynos_dsi_read(dsi, DSIM_RXFIFO_REG);  in exynos_dsi_read_from_fifo()
1100 		reg = exynos_dsi_read(dsi, DSIM_RXFIFO_REG);  in exynos_dsi_read_from_fifo()
1106 static void exynos_dsi_transfer_start(struct exynos_dsi *dsi)  in exynos_dsi_transfer_start()  argument
1113 	spin_lock_irqsave(&dsi->transfer_lock, flags);  in exynos_dsi_transfer_start()
1115 	if (list_empty(&dsi->transfer_list)) {  in exynos_dsi_transfer_start()
1116 		spin_unlock_irqrestore(&dsi->transfer_lock, flags);  in exynos_dsi_transfer_start()
1120 	xfer = list_first_entry(&dsi->transfer_list,  in exynos_dsi_transfer_start()
1123 	spin_unlock_irqrestore(&dsi->transfer_lock, flags);  in exynos_dsi_transfer_start()
1130 	exynos_dsi_send_to_fifo(dsi, xfer);  in exynos_dsi_transfer_start()
1138 	spin_lock_irqsave(&dsi->transfer_lock, flags);  in exynos_dsi_transfer_start()
1141 	start = !list_empty(&dsi->transfer_list);  in exynos_dsi_transfer_start()
1143 	spin_unlock_irqrestore(&dsi->transfer_lock, flags);  in exynos_dsi_transfer_start()
1149 static bool exynos_dsi_transfer_finish(struct exynos_dsi *dsi)  in exynos_dsi_transfer_finish()  argument
1155 	spin_lock_irqsave(&dsi->transfer_lock, flags);  in exynos_dsi_transfer_finish()
1157 	if (list_empty(&dsi->transfer_list)) {  in exynos_dsi_transfer_finish()
1158 		spin_unlock_irqrestore(&dsi->transfer_lock, flags);  in exynos_dsi_transfer_finish()
1162 	xfer = list_first_entry(&dsi->transfer_list,  in exynos_dsi_transfer_finish()
1165 	spin_unlock_irqrestore(&dsi->transfer_lock, flags);  in exynos_dsi_transfer_finish()
1167 	dev_dbg(dsi->dev,  in exynos_dsi_transfer_finish()
1176 		exynos_dsi_read_from_fifo(dsi, xfer);  in exynos_dsi_transfer_finish()
1181 	spin_lock_irqsave(&dsi->transfer_lock, flags);  in exynos_dsi_transfer_finish()
1184 	start = !list_empty(&dsi->transfer_list);  in exynos_dsi_transfer_finish()
1186 	spin_unlock_irqrestore(&dsi->transfer_lock, flags);  in exynos_dsi_transfer_finish()
1195 static void exynos_dsi_remove_transfer(struct exynos_dsi *dsi,  in exynos_dsi_remove_transfer()  argument
1201 	spin_lock_irqsave(&dsi->transfer_lock, flags);  in exynos_dsi_remove_transfer()
1203 	if (!list_empty(&dsi->transfer_list) &&  in exynos_dsi_remove_transfer()
1204 	    xfer == list_first_entry(&dsi->transfer_list,  in exynos_dsi_remove_transfer()
1207 		start = !list_empty(&dsi->transfer_list);  in exynos_dsi_remove_transfer()
1208 		spin_unlock_irqrestore(&dsi->transfer_lock, flags);  in exynos_dsi_remove_transfer()
1210 			exynos_dsi_transfer_start(dsi);  in exynos_dsi_remove_transfer()
1216 	spin_unlock_irqrestore(&dsi->transfer_lock, flags);  in exynos_dsi_remove_transfer()
1219 static int exynos_dsi_transfer(struct exynos_dsi *dsi,  in exynos_dsi_transfer()  argument
1230 	spin_lock_irqsave(&dsi->transfer_lock, flags);  in exynos_dsi_transfer()
1232 	stopped = list_empty(&dsi->transfer_list);  in exynos_dsi_transfer()
1233 	list_add_tail(&xfer->list, &dsi->transfer_list);  in exynos_dsi_transfer()
1235 	spin_unlock_irqrestore(&dsi->transfer_lock, flags);  in exynos_dsi_transfer()
1238 		exynos_dsi_transfer_start(dsi);  in exynos_dsi_transfer()
1244 		exynos_dsi_remove_transfer(dsi, xfer);  in exynos_dsi_transfer()
1245 		dev_err(dsi->dev, "xfer timed out: %*ph %*ph\n", 4, pkt->header,  in exynos_dsi_transfer()
1256 	struct exynos_dsi *dsi = dev_id;  in exynos_dsi_irq()  local
1259 	status = exynos_dsi_read(dsi, DSIM_INTSRC_REG);  in exynos_dsi_irq()
1263 			dev_warn(dsi->dev, "spurious interrupt\n");  in exynos_dsi_irq()
1266 	exynos_dsi_write(dsi, DSIM_INTSRC_REG, status);  in exynos_dsi_irq()
1272 		exynos_dsi_write(dsi, DSIM_INTMSK_REG, mask);  in exynos_dsi_irq()
1273 		complete(&dsi->completed);  in exynos_dsi_irq()
1281 	if (exynos_dsi_transfer_finish(dsi))  in exynos_dsi_irq()
1282 		exynos_dsi_transfer_start(dsi);  in exynos_dsi_irq()
1289 	struct exynos_dsi *dsi = (struct exynos_dsi *)dev_id;  in exynos_dsi_te_irq_handler()  local
1290 	struct drm_encoder *encoder = &dsi->encoder;  in exynos_dsi_te_irq_handler()
1292 	if (dsi->state & DSIM_STATE_VIDOUT_AVAILABLE)  in exynos_dsi_te_irq_handler()
1298 static void exynos_dsi_enable_irq(struct exynos_dsi *dsi)  in exynos_dsi_enable_irq()  argument
1300 	enable_irq(dsi->irq);  in exynos_dsi_enable_irq()
1302 	if (gpio_is_valid(dsi->te_gpio))  in exynos_dsi_enable_irq()
1303 		enable_irq(gpio_to_irq(dsi->te_gpio));  in exynos_dsi_enable_irq()
1306 static void exynos_dsi_disable_irq(struct exynos_dsi *dsi)  in exynos_dsi_disable_irq()  argument
1308 	if (gpio_is_valid(dsi->te_gpio))  in exynos_dsi_disable_irq()
1309 		disable_irq(gpio_to_irq(dsi->te_gpio));  in exynos_dsi_disable_irq()
1311 	disable_irq(dsi->irq);  in exynos_dsi_disable_irq()
1314 static int exynos_dsi_init(struct exynos_dsi *dsi)  in exynos_dsi_init()  argument
1316 	const struct exynos_dsi_driver_data *driver_data = dsi->driver_data;  in exynos_dsi_init()
1318 	exynos_dsi_reset(dsi);  in exynos_dsi_init()
1319 	exynos_dsi_enable_irq(dsi);  in exynos_dsi_init()
1322 		exynos_dsi_enable_lane(dsi, BIT(dsi->lanes) - 1);  in exynos_dsi_init()
1324 	exynos_dsi_enable_clock(dsi);  in exynos_dsi_init()
1326 		exynos_dsi_wait_for_reset(dsi);  in exynos_dsi_init()
1327 	exynos_dsi_set_phy_ctrl(dsi);  in exynos_dsi_init()
1328 	exynos_dsi_init_link(dsi);  in exynos_dsi_init()
1333 static int exynos_dsi_register_te_irq(struct exynos_dsi *dsi,  in exynos_dsi_register_te_irq()  argument
1339 	dsi->te_gpio = of_get_named_gpio(panel->of_node, "te-gpios", 0);  in exynos_dsi_register_te_irq()
1340 	if (dsi->te_gpio == -ENOENT)  in exynos_dsi_register_te_irq()
1343 	if (!gpio_is_valid(dsi->te_gpio)) {  in exynos_dsi_register_te_irq()
1344 		ret = dsi->te_gpio;  in exynos_dsi_register_te_irq()
1345 		dev_err(dsi->dev, "cannot get te-gpios, %d\n", ret);  in exynos_dsi_register_te_irq()
1349 	ret = gpio_request(dsi->te_gpio, "te_gpio");  in exynos_dsi_register_te_irq()
1351 		dev_err(dsi->dev, "gpio request failed with %d\n", ret);  in exynos_dsi_register_te_irq()
1355 	te_gpio_irq = gpio_to_irq(dsi->te_gpio);  in exynos_dsi_register_te_irq()
1359 					IRQF_TRIGGER_RISING, "TE", dsi);  in exynos_dsi_register_te_irq()
1361 		dev_err(dsi->dev, "request interrupt failed with %d\n", ret);  in exynos_dsi_register_te_irq()
1362 		gpio_free(dsi->te_gpio);  in exynos_dsi_register_te_irq()
1370 static void exynos_dsi_unregister_te_irq(struct exynos_dsi *dsi)  in exynos_dsi_unregister_te_irq()  argument
1372 	if (gpio_is_valid(dsi->te_gpio)) {  in exynos_dsi_unregister_te_irq()
1373 		free_irq(gpio_to_irq(dsi->te_gpio), dsi);  in exynos_dsi_unregister_te_irq()
1374 		gpio_free(dsi->te_gpio);  in exynos_dsi_unregister_te_irq()
1375 		dsi->te_gpio = -ENOENT;  in exynos_dsi_unregister_te_irq()
1381 	struct exynos_dsi *dsi = encoder_to_dsi(encoder);  in exynos_dsi_enable()  local
1385 	if (dsi->state & DSIM_STATE_ENABLED)  in exynos_dsi_enable()
1388 	pm_runtime_get_sync(dsi->dev);  in exynos_dsi_enable()
1389 	dsi->state |= DSIM_STATE_ENABLED;  in exynos_dsi_enable()
1391 	if (dsi->panel) {  in exynos_dsi_enable()
1392 		ret = drm_panel_prepare(dsi->panel);  in exynos_dsi_enable()
1396 		list_for_each_entry_reverse(iter, &dsi->bridge_chain,  in exynos_dsi_enable()
1403 	exynos_dsi_set_display_mode(dsi);  in exynos_dsi_enable()
1404 	exynos_dsi_set_display_enable(dsi, true);  in exynos_dsi_enable()
1406 	if (dsi->panel) {  in exynos_dsi_enable()
1407 		ret = drm_panel_enable(dsi->panel);  in exynos_dsi_enable()
1411 		list_for_each_entry(iter, &dsi->bridge_chain, chain_node) {  in exynos_dsi_enable()
1417 	dsi->state |= DSIM_STATE_VIDOUT_AVAILABLE;  in exynos_dsi_enable()
1421 	exynos_dsi_set_display_enable(dsi, false);  in exynos_dsi_enable()
1422 	drm_panel_unprepare(dsi->panel);  in exynos_dsi_enable()
1425 	dsi->state &= ~DSIM_STATE_ENABLED;  in exynos_dsi_enable()
1426 	pm_runtime_put(dsi->dev);  in exynos_dsi_enable()
1431 	struct exynos_dsi *dsi = encoder_to_dsi(encoder);  in exynos_dsi_disable()  local
1434 	if (!(dsi->state & DSIM_STATE_ENABLED))  in exynos_dsi_disable()
1437 	dsi->state &= ~DSIM_STATE_VIDOUT_AVAILABLE;  in exynos_dsi_disable()
1439 	drm_panel_disable(dsi->panel);  in exynos_dsi_disable()
1441 	list_for_each_entry_reverse(iter, &dsi->bridge_chain, chain_node) {  in exynos_dsi_disable()
1446 	exynos_dsi_set_display_enable(dsi, false);  in exynos_dsi_disable()
1447 	drm_panel_unprepare(dsi->panel);  in exynos_dsi_disable()
1449 	list_for_each_entry(iter, &dsi->bridge_chain, chain_node) {  in exynos_dsi_disable()
1454 	dsi->state &= ~DSIM_STATE_ENABLED;  in exynos_dsi_disable()
1455 	pm_runtime_put_sync(dsi->dev);  in exynos_dsi_disable()
1482 	struct exynos_dsi *dsi = connector_to_dsi(connector);  in exynos_dsi_get_modes()  local
1484 	if (dsi->panel)  in exynos_dsi_get_modes()
1485 		return drm_panel_get_modes(dsi->panel, connector);  in exynos_dsi_get_modes()
1496 	struct exynos_dsi *dsi = encoder_to_dsi(encoder);  in exynos_dsi_create_connector()  local
1497 	struct drm_connector *connector = &dsi->connector;  in exynos_dsi_create_connector()
1506 		DRM_DEV_ERROR(dsi->dev,  in exynos_dsi_create_connector()
1532 	struct exynos_dsi *dsi = host_to_dsi(host);  in exynos_dsi_host_attach()  local
1533 	struct drm_encoder *encoder = &dsi->encoder;  in exynos_dsi_host_attach()
1540 		dsi->out_bridge = out_bridge;  in exynos_dsi_host_attach()
1541 		list_splice_init(&encoder->bridge_chain, &dsi->bridge_chain);  in exynos_dsi_host_attach()
1546 			DRM_DEV_ERROR(dsi->dev,  in exynos_dsi_host_attach()
1553 		dsi->panel = of_drm_find_panel(device->dev.of_node);  in exynos_dsi_host_attach()
1554 		if (IS_ERR(dsi->panel))  in exynos_dsi_host_attach()
1555 			dsi->panel = NULL;  in exynos_dsi_host_attach()
1557 			dsi->connector.status = connector_status_connected;  in exynos_dsi_host_attach()
1563 	 * If attached panel device is for command mode one, dsi should register  in exynos_dsi_host_attach()
1567 		int ret = exynos_dsi_register_te_irq(dsi, &device->dev);  in exynos_dsi_host_attach()
1574 	dsi->lanes = device->lanes;  in exynos_dsi_host_attach()
1575 	dsi->format = device->format;  in exynos_dsi_host_attach()
1576 	dsi->mode_flags = device->mode_flags;  in exynos_dsi_host_attach()
1578 			!(dsi->mode_flags & MIPI_DSI_MODE_VIDEO);  in exynos_dsi_host_attach()
1591 	struct exynos_dsi *dsi = host_to_dsi(host);  in exynos_dsi_host_detach()  local
1592 	struct drm_device *drm = dsi->encoder.dev;  in exynos_dsi_host_detach()
1594 	if (dsi->panel) {  in exynos_dsi_host_detach()
1596 		exynos_dsi_disable(&dsi->encoder);  in exynos_dsi_host_detach()
1597 		dsi->panel = NULL;  in exynos_dsi_host_detach()
1598 		dsi->connector.status = connector_status_disconnected;  in exynos_dsi_host_detach()
1601 		if (dsi->out_bridge->funcs->detach)  in exynos_dsi_host_detach()
1602 			dsi->out_bridge->funcs->detach(dsi->out_bridge);  in exynos_dsi_host_detach()
1603 		dsi->out_bridge = NULL;  in exynos_dsi_host_detach()
1604 		INIT_LIST_HEAD(&dsi->bridge_chain);  in exynos_dsi_host_detach()
1610 	exynos_dsi_unregister_te_irq(dsi);  in exynos_dsi_host_detach()
1618 	struct exynos_dsi *dsi = host_to_dsi(host);  in exynos_dsi_host_transfer()  local
1622 	if (!(dsi->state & DSIM_STATE_ENABLED))  in exynos_dsi_host_transfer()
1625 	if (!(dsi->state & DSIM_STATE_INITIALIZED)) {  in exynos_dsi_host_transfer()
1626 		ret = exynos_dsi_init(dsi);  in exynos_dsi_host_transfer()
1629 		dsi->state |= DSIM_STATE_INITIALIZED;  in exynos_dsi_host_transfer()
1640 	ret = exynos_dsi_transfer(dsi, &xfer);  in exynos_dsi_host_transfer()
1666 static int exynos_dsi_parse_dt(struct exynos_dsi *dsi)  in exynos_dsi_parse_dt()  argument
1668 	struct device *dev = dsi->dev;  in exynos_dsi_parse_dt()
1673 				     &dsi->pll_clk_rate);  in exynos_dsi_parse_dt()
1678 				     &dsi->burst_clk_rate);  in exynos_dsi_parse_dt()
1683 				     &dsi->esc_clk_rate);  in exynos_dsi_parse_dt()
1687 	dsi->in_bridge_node = of_graph_get_remote_node(node, DSI_PORT_IN, 0);  in exynos_dsi_parse_dt()
1696 	struct exynos_dsi *dsi = encoder_to_dsi(encoder);  in exynos_dsi_bind()  local
1709 	if (dsi->in_bridge_node) {  in exynos_dsi_bind()
1710 		in_bridge = of_drm_find_bridge(dsi->in_bridge_node);  in exynos_dsi_bind()
1715 	return mipi_dsi_host_register(&dsi->dsi_host);  in exynos_dsi_bind()
1722 	struct exynos_dsi *dsi = encoder_to_dsi(encoder);  in exynos_dsi_unbind()  local
1726 	mipi_dsi_host_unregister(&dsi->dsi_host);  in exynos_dsi_unbind()
1738 	struct exynos_dsi *dsi;  in exynos_dsi_probe()  local
1741 	dsi = devm_kzalloc(dev, sizeof(*dsi), GFP_KERNEL);  in exynos_dsi_probe()
1742 	if (!dsi)  in exynos_dsi_probe()
1746 	dsi->te_gpio = -ENOENT;  in exynos_dsi_probe()
1748 	init_completion(&dsi->completed);  in exynos_dsi_probe()
1749 	spin_lock_init(&dsi->transfer_lock);  in exynos_dsi_probe()
1750 	INIT_LIST_HEAD(&dsi->transfer_list);  in exynos_dsi_probe()
1751 	INIT_LIST_HEAD(&dsi->bridge_chain);  in exynos_dsi_probe()
1753 	dsi->dsi_host.ops = &exynos_dsi_ops;  in exynos_dsi_probe()
1754 	dsi->dsi_host.dev = dev;  in exynos_dsi_probe()
1756 	dsi->dev = dev;  in exynos_dsi_probe()
1757 	dsi->driver_data = of_device_get_match_data(dev);  in exynos_dsi_probe()
1759 	dsi->supplies[0].supply = "vddcore";  in exynos_dsi_probe()
1760 	dsi->supplies[1].supply = "vddio";  in exynos_dsi_probe()
1761 	ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(dsi->supplies),  in exynos_dsi_probe()
1762 				      dsi->supplies);  in exynos_dsi_probe()
1766 	dsi->clks = devm_kcalloc(dev,  in exynos_dsi_probe()
1767 			dsi->driver_data->num_clks, sizeof(*dsi->clks),  in exynos_dsi_probe()
1769 	if (!dsi->clks)  in exynos_dsi_probe()
1772 	for (i = 0; i < dsi->driver_data->num_clks; i++) {  in exynos_dsi_probe()
1773 		dsi->clks[i] = devm_clk_get(dev, clk_names[i]);  in exynos_dsi_probe()
1774 		if (IS_ERR(dsi->clks[i])) {  in exynos_dsi_probe()
1776 				dsi->clks[i] = devm_clk_get(dev,  in exynos_dsi_probe()
1778 				if (!IS_ERR(dsi->clks[i]))  in exynos_dsi_probe()
1784 			return PTR_ERR(dsi->clks[i]);  in exynos_dsi_probe()
1789 	dsi->reg_base = devm_ioremap_resource(dev, res);  in exynos_dsi_probe()
1790 	if (IS_ERR(dsi->reg_base)) {  in exynos_dsi_probe()
1792 		return PTR_ERR(dsi->reg_base);  in exynos_dsi_probe()
1795 	dsi->phy = devm_phy_get(dev, "dsim");  in exynos_dsi_probe()
1796 	if (IS_ERR(dsi->phy)) {  in exynos_dsi_probe()
1798 		return PTR_ERR(dsi->phy);  in exynos_dsi_probe()
1801 	dsi->irq = platform_get_irq(pdev, 0);  in exynos_dsi_probe()
1802 	if (dsi->irq < 0)  in exynos_dsi_probe()
1803 		return dsi->irq;  in exynos_dsi_probe()
1805 	irq_set_status_flags(dsi->irq, IRQ_NOAUTOEN);  in exynos_dsi_probe()
1806 	ret = devm_request_threaded_irq(dev, dsi->irq, NULL,  in exynos_dsi_probe()
1808 					dev_name(dev), dsi);  in exynos_dsi_probe()
1810 		dev_err(dev, "failed to request dsi irq\n");  in exynos_dsi_probe()
1814 	ret = exynos_dsi_parse_dt(dsi);  in exynos_dsi_probe()
1818 	platform_set_drvdata(pdev, &dsi->encoder);  in exynos_dsi_probe()
1830 	of_node_put(dsi->in_bridge_node);  in exynos_dsi_probe()
1837 	struct exynos_dsi *dsi = platform_get_drvdata(pdev);  in exynos_dsi_remove()  local
1839 	of_node_put(dsi->in_bridge_node);  in exynos_dsi_remove()
1851 	struct exynos_dsi *dsi = encoder_to_dsi(encoder);  in exynos_dsi_suspend()  local
1852 	const struct exynos_dsi_driver_data *driver_data = dsi->driver_data;  in exynos_dsi_suspend()
1857 	if (dsi->state & DSIM_STATE_INITIALIZED) {  in exynos_dsi_suspend()
1858 		dsi->state &= ~DSIM_STATE_INITIALIZED;  in exynos_dsi_suspend()
1860 		exynos_dsi_disable_clock(dsi);  in exynos_dsi_suspend()
1862 		exynos_dsi_disable_irq(dsi);  in exynos_dsi_suspend()
1865 	dsi->state &= ~DSIM_STATE_CMD_LPM;  in exynos_dsi_suspend()
1867 	phy_power_off(dsi->phy);  in exynos_dsi_suspend()
1870 		clk_disable_unprepare(dsi->clks[i]);  in exynos_dsi_suspend()
1872 	ret = regulator_bulk_disable(ARRAY_SIZE(dsi->supplies), dsi->supplies);  in exynos_dsi_suspend()
1874 		dev_err(dsi->dev, "cannot disable regulators %d\n", ret);  in exynos_dsi_suspend()
1882 	struct exynos_dsi *dsi = encoder_to_dsi(encoder);  in exynos_dsi_resume()  local
1883 	const struct exynos_dsi_driver_data *driver_data = dsi->driver_data;  in exynos_dsi_resume()
1886 	ret = regulator_bulk_enable(ARRAY_SIZE(dsi->supplies), dsi->supplies);  in exynos_dsi_resume()
1888 		dev_err(dsi->dev, "cannot enable regulators %d\n", ret);  in exynos_dsi_resume()
1893 		ret = clk_prepare_enable(dsi->clks[i]);  in exynos_dsi_resume()
1898 	ret = phy_power_on(dsi->phy);  in exynos_dsi_resume()
1900 		dev_err(dsi->dev, "cannot enable phy %d\n", ret);  in exynos_dsi_resume()
1908 		clk_disable_unprepare(dsi->clks[i]);  in exynos_dsi_resume()
1909 	regulator_bulk_disable(ARRAY_SIZE(dsi->supplies), dsi->supplies);  in exynos_dsi_resume()
1924 		   .name = "exynos-dsi",
1933 MODULE_DESCRIPTION("Samsung SoC MIPI DSI Master");