3  * Samsung SoC MIPI DSI Master driver.
320 static inline void exynos_dsi_write(struct exynos_dsi *dsi, enum reg_idx idx,  in exynos_dsi_write()  argument
324 	writel(val, dsi->reg_base + dsi->driver_data->reg_ofs[idx]);  in exynos_dsi_write()
327 static inline u32 exynos_dsi_read(struct exynos_dsi *dsi, enum reg_idx idx)  in exynos_dsi_read()  argument
329 	return readl(dsi->reg_base + dsi->driver_data->reg_ofs[idx]);  in exynos_dsi_read()
509 	{ .compatible = "samsung,exynos3250-mipi-dsi",
511 	{ .compatible = "samsung,exynos4210-mipi-dsi",
513 	{ .compatible = "samsung,exynos5410-mipi-dsi",
515 	{ .compatible = "samsung,exynos5422-mipi-dsi",
517 	{ .compatible = "samsung,exynos5433-mipi-dsi",
522 static void exynos_dsi_wait_for_reset(struct exynos_dsi *dsi)  in exynos_dsi_wait_for_reset()  argument
524 	if (wait_for_completion_timeout(&dsi->completed, msecs_to_jiffies(300)))  in exynos_dsi_wait_for_reset()
527 	dev_err(dsi->dev, "timeout waiting for reset\n");  in exynos_dsi_wait_for_reset()
530 static void exynos_dsi_reset(struct exynos_dsi *dsi)  in exynos_dsi_reset()  argument
532 	u32 reset_val = dsi->driver_data->reg_values[RESET_TYPE];  in exynos_dsi_reset()
534 	reinit_completion(&dsi->completed);  in exynos_dsi_reset()
535 	exynos_dsi_write(dsi, DSIM_SWRST_REG, reset_val);  in exynos_dsi_reset()
542 static unsigned long exynos_dsi_pll_find_pms(struct exynos_dsi *dsi,  in exynos_dsi_pll_find_pms()  argument
545 	const struct exynos_dsi_driver_data *driver_data = dsi->driver_data;  in exynos_dsi_pll_find_pms()
596 static unsigned long exynos_dsi_set_pll(struct exynos_dsi *dsi,  in exynos_dsi_set_pll()  argument
599 	const struct exynos_dsi_driver_data *driver_data = dsi->driver_data;  in exynos_dsi_set_pll()
606 	fin = dsi->pll_clk_rate;  in exynos_dsi_set_pll()
607 	fout = exynos_dsi_pll_find_pms(dsi, fin, freq, &p, &m, &s);  in exynos_dsi_set_pll()
609 		dev_err(dsi->dev,  in exynos_dsi_set_pll()
613 	dev_dbg(dsi->dev, "PLL freq %lu, (p %d, m %d, s %d)\n", fout, p, m, s);  in exynos_dsi_set_pll()
616 			dsi->reg_base + driver_data->plltmr_reg);  in exynos_dsi_set_pll()
633 		dev_dbg(dsi->dev, "band %d\n", band);  in exynos_dsi_set_pll()
638 	exynos_dsi_write(dsi, DSIM_PLLCTRL_REG, reg);  in exynos_dsi_set_pll()
643 			dev_err(dsi->dev, "PLL failed to stabilize\n");  in exynos_dsi_set_pll()
646 		reg = exynos_dsi_read(dsi, DSIM_STATUS_REG);  in exynos_dsi_set_pll()
652 static int exynos_dsi_enable_clock(struct exynos_dsi *dsi)  in exynos_dsi_enable_clock()  argument
658 	hs_clk = exynos_dsi_set_pll(dsi, dsi->burst_clk_rate);  in exynos_dsi_enable_clock()
660 		dev_err(dsi->dev, "failed to configure DSI PLL\n");  in exynos_dsi_enable_clock()
665 	esc_div = DIV_ROUND_UP(byte_clk, dsi->esc_clk_rate);  in exynos_dsi_enable_clock()
673 	dev_dbg(dsi->dev, "hs_clk = %lu, byte_clk = %lu, esc_clk = %lu\n",  in exynos_dsi_enable_clock()
676 	reg = exynos_dsi_read(dsi, DSIM_CLKCTRL_REG);  in exynos_dsi_enable_clock()
683 			| DSIM_LANE_ESC_CLK_EN_DATA(BIT(dsi->lanes) - 1)  in exynos_dsi_enable_clock()
686 	exynos_dsi_write(dsi, DSIM_CLKCTRL_REG, reg);  in exynos_dsi_enable_clock()
691 static void exynos_dsi_set_phy_ctrl(struct exynos_dsi *dsi)  in exynos_dsi_set_phy_ctrl()  argument
693 	const struct exynos_dsi_driver_data *driver_data = dsi->driver_data;  in exynos_dsi_set_phy_ctrl()
703 	exynos_dsi_write(dsi, DSIM_PHYCTRL_REG, reg);  in exynos_dsi_set_phy_ctrl()
711 	exynos_dsi_write(dsi, DSIM_PHYTIMING_REG, reg);  in exynos_dsi_set_phy_ctrl()
731 	exynos_dsi_write(dsi, DSIM_PHYTIMING1_REG, reg);  in exynos_dsi_set_phy_ctrl()
744 	exynos_dsi_write(dsi, DSIM_PHYTIMING2_REG, reg);  in exynos_dsi_set_phy_ctrl()
747 static void exynos_dsi_disable_clock(struct exynos_dsi *dsi)  in exynos_dsi_disable_clock()  argument
751 	reg = exynos_dsi_read(dsi, DSIM_CLKCTRL_REG);  in exynos_dsi_disable_clock()
754 	exynos_dsi_write(dsi, DSIM_CLKCTRL_REG, reg);  in exynos_dsi_disable_clock()
756 	reg = exynos_dsi_read(dsi, DSIM_PLLCTRL_REG);  in exynos_dsi_disable_clock()
758 	exynos_dsi_write(dsi, DSIM_PLLCTRL_REG, reg);  in exynos_dsi_disable_clock()
761 static void exynos_dsi_enable_lane(struct exynos_dsi *dsi, u32 lane)  in exynos_dsi_enable_lane()  argument
763 	u32 reg = exynos_dsi_read(dsi, DSIM_CONFIG_REG);  in exynos_dsi_enable_lane()
764 	reg |= (DSIM_NUM_OF_DATA_LANE(dsi->lanes - 1) | DSIM_LANE_EN_CLK |  in exynos_dsi_enable_lane()
766 	exynos_dsi_write(dsi, DSIM_CONFIG_REG, reg);  in exynos_dsi_enable_lane()
769 static int exynos_dsi_init_link(struct exynos_dsi *dsi)  in exynos_dsi_init_link()  argument
771 	const struct exynos_dsi_driver_data *driver_data = dsi->driver_data;  in exynos_dsi_init_link()
777 	reg = exynos_dsi_read(dsi, DSIM_FIFOCTRL_REG);  in exynos_dsi_init_link()
779 	exynos_dsi_write(dsi, DSIM_FIFOCTRL_REG, reg);  in exynos_dsi_init_link()
784 	exynos_dsi_write(dsi, DSIM_FIFOCTRL_REG, reg);  in exynos_dsi_init_link()
787 	/* DSI configuration */  in exynos_dsi_init_link()
792 	 * If this bit is set[= MIPI_DSI_MODE_VIDEO], dsi will support video  in exynos_dsi_init_link()
795 	if (dsi->mode_flags & MIPI_DSI_MODE_VIDEO) {  in exynos_dsi_init_link()
802 		if (!(dsi->mode_flags & MIPI_DSI_MODE_VSYNC_FLUSH))  in exynos_dsi_init_link()
804 		if (dsi->mode_flags & MIPI_DSI_MODE_VIDEO_SYNC_PULSE)  in exynos_dsi_init_link()
806 		if (dsi->mode_flags & MIPI_DSI_MODE_VIDEO_BURST)  in exynos_dsi_init_link()
808 		if (dsi->mode_flags & MIPI_DSI_MODE_VIDEO_AUTO_VERT)  in exynos_dsi_init_link()
810 		if (dsi->mode_flags & MIPI_DSI_MODE_VIDEO_HSE)  in exynos_dsi_init_link()
812 		if (!(dsi->mode_flags & MIPI_DSI_MODE_VIDEO_NO_HFP))  in exynos_dsi_init_link()
814 		if (!(dsi->mode_flags & MIPI_DSI_MODE_VIDEO_NO_HBP))  in exynos_dsi_init_link()
816 		if (!(dsi->mode_flags & MIPI_DSI_MODE_VIDEO_NO_HSA))  in exynos_dsi_init_link()
820 	if (!(dsi->mode_flags & MIPI_DSI_MODE_NO_EOT_PACKET))  in exynos_dsi_init_link()
823 	switch (dsi->format) {  in exynos_dsi_init_link()
837 		dev_err(dsi->dev, "invalid pixel format\n");  in exynos_dsi_init_link()
850 			dsi->mode_flags & MIPI_DSI_CLOCK_NON_CONTINUOUS) {  in exynos_dsi_init_link()
853 	exynos_dsi_write(dsi, DSIM_CONFIG_REG, reg);  in exynos_dsi_init_link()
855 	lanes_mask = BIT(dsi->lanes) - 1;  in exynos_dsi_init_link()
856 	exynos_dsi_enable_lane(dsi, lanes_mask);  in exynos_dsi_init_link()
862 			dev_err(dsi->dev, "waiting for bus lanes timed out\n");  in exynos_dsi_init_link()
866 		reg = exynos_dsi_read(dsi, DSIM_STATUS_REG);  in exynos_dsi_init_link()
872 	reg = exynos_dsi_read(dsi, DSIM_ESCMODE_REG);  in exynos_dsi_init_link()
875 	exynos_dsi_write(dsi, DSIM_ESCMODE_REG, reg);  in exynos_dsi_init_link()
878 	exynos_dsi_write(dsi, DSIM_TIMEOUT_REG, reg);  in exynos_dsi_init_link()
883 static void exynos_dsi_set_display_mode(struct exynos_dsi *dsi)  in exynos_dsi_set_display_mode()  argument
885 	struct drm_display_mode *m = &dsi->encoder.crtc->state->adjusted_mode;  in exynos_dsi_set_display_mode()
886 	unsigned int num_bits_resol = dsi->driver_data->num_bits_resol;  in exynos_dsi_set_display_mode()
889 	if (dsi->mode_flags & MIPI_DSI_MODE_VIDEO) {  in exynos_dsi_set_display_mode()
893 		exynos_dsi_write(dsi, DSIM_MVPORCH_REG, reg);  in exynos_dsi_set_display_mode()
897 		exynos_dsi_write(dsi, DSIM_MHPORCH_REG, reg);  in exynos_dsi_set_display_mode()
901 		exynos_dsi_write(dsi, DSIM_MSYNC_REG, reg);  in exynos_dsi_set_display_mode()
906 	exynos_dsi_write(dsi, DSIM_MDRESOL_REG, reg);  in exynos_dsi_set_display_mode()
908 	dev_dbg(dsi->dev, "LCD size = %dx%d\n", m->hdisplay, m->vdisplay);  in exynos_dsi_set_display_mode()
911 static void exynos_dsi_set_display_enable(struct exynos_dsi *dsi, bool enable)  in exynos_dsi_set_display_enable()  argument
915 	reg = exynos_dsi_read(dsi, DSIM_MDRESOL_REG);  in exynos_dsi_set_display_enable()
920 	exynos_dsi_write(dsi, DSIM_MDRESOL_REG, reg);  in exynos_dsi_set_display_enable()
923 static int exynos_dsi_wait_for_hdr_fifo(struct exynos_dsi *dsi)  in exynos_dsi_wait_for_hdr_fifo()  argument
928 		u32 reg = exynos_dsi_read(dsi, DSIM_FIFOCTRL_REG);  in exynos_dsi_wait_for_hdr_fifo()
940 static void exynos_dsi_set_cmd_lpm(struct exynos_dsi *dsi, bool lpm)  in exynos_dsi_set_cmd_lpm()  argument
942 	u32 v = exynos_dsi_read(dsi, DSIM_ESCMODE_REG);  in exynos_dsi_set_cmd_lpm()
949 	exynos_dsi_write(dsi, DSIM_ESCMODE_REG, v);  in exynos_dsi_set_cmd_lpm()
952 static void exynos_dsi_force_bta(struct exynos_dsi *dsi)  in exynos_dsi_force_bta()  argument
954 	u32 v = exynos_dsi_read(dsi, DSIM_ESCMODE_REG);  in exynos_dsi_force_bta()
956 	exynos_dsi_write(dsi, DSIM_ESCMODE_REG, v);  in exynos_dsi_force_bta()
959 static void exynos_dsi_send_to_fifo(struct exynos_dsi *dsi,  in exynos_dsi_send_to_fifo()  argument
962 	struct device *dev = dsi->dev;  in exynos_dsi_send_to_fifo()
980 		exynos_dsi_write(dsi, DSIM_PAYLOAD_REG, reg);  in exynos_dsi_send_to_fifo()
995 		exynos_dsi_write(dsi, DSIM_PAYLOAD_REG, reg);  in exynos_dsi_send_to_fifo()
1004 	if (exynos_dsi_wait_for_hdr_fifo(dsi)) {  in exynos_dsi_send_to_fifo()
1010 		 dsi->state & DSIM_STATE_CMD_LPM)) {  in exynos_dsi_send_to_fifo()
1011 		exynos_dsi_set_cmd_lpm(dsi, xfer->flags & MIPI_DSI_MSG_USE_LPM);  in exynos_dsi_send_to_fifo()
1012 		dsi->state ^= DSIM_STATE_CMD_LPM;  in exynos_dsi_send_to_fifo()
1015 	exynos_dsi_write(dsi, DSIM_PKTHDR_REG, reg);  in exynos_dsi_send_to_fifo()
1018 		exynos_dsi_force_bta(dsi);  in exynos_dsi_send_to_fifo()
1021 static void exynos_dsi_read_from_fifo(struct exynos_dsi *dsi,  in exynos_dsi_read_from_fifo()  argument
1026 	struct device *dev = dsi->dev;  in exynos_dsi_read_from_fifo()
1031 		reg = exynos_dsi_read(dsi, DSIM_RXFIFO_REG);  in exynos_dsi_read_from_fifo()
1049 			dev_err(dev, "DSI Error Report: 0x%04x\n",  in exynos_dsi_read_from_fifo()
1070 		reg = exynos_dsi_read(dsi, DSIM_RXFIFO_REG);  in exynos_dsi_read_from_fifo()
1080 		reg = exynos_dsi_read(dsi, DSIM_RXFIFO_REG);  in exynos_dsi_read_from_fifo()
1099 		reg = exynos_dsi_read(dsi, DSIM_RXFIFO_REG);  in exynos_dsi_read_from_fifo()
1105 static void exynos_dsi_transfer_start(struct exynos_dsi *dsi)  in exynos_dsi_transfer_start()  argument
1112 	spin_lock_irqsave(&dsi->transfer_lock, flags);  in exynos_dsi_transfer_start()
1114 	if (list_empty(&dsi->transfer_list)) {  in exynos_dsi_transfer_start()
1115 		spin_unlock_irqrestore(&dsi->transfer_lock, flags);  in exynos_dsi_transfer_start()
1119 	xfer = list_first_entry(&dsi->transfer_list,  in exynos_dsi_transfer_start()
1122 	spin_unlock_irqrestore(&dsi->transfer_lock, flags);  in exynos_dsi_transfer_start()
1129 	exynos_dsi_send_to_fifo(dsi, xfer);  in exynos_dsi_transfer_start()
1137 	spin_lock_irqsave(&dsi->transfer_lock, flags);  in exynos_dsi_transfer_start()
1140 	start = !list_empty(&dsi->transfer_list);  in exynos_dsi_transfer_start()
1142 	spin_unlock_irqrestore(&dsi->transfer_lock, flags);  in exynos_dsi_transfer_start()
1148 static bool exynos_dsi_transfer_finish(struct exynos_dsi *dsi)  in exynos_dsi_transfer_finish()  argument
1154 	spin_lock_irqsave(&dsi->transfer_lock, flags);  in exynos_dsi_transfer_finish()
1156 	if (list_empty(&dsi->transfer_list)) {  in exynos_dsi_transfer_finish()
1157 		spin_unlock_irqrestore(&dsi->transfer_lock, flags);  in exynos_dsi_transfer_finish()
1161 	xfer = list_first_entry(&dsi->transfer_list,  in exynos_dsi_transfer_finish()
1164 	spin_unlock_irqrestore(&dsi->transfer_lock, flags);  in exynos_dsi_transfer_finish()
1166 	dev_dbg(dsi->dev,  in exynos_dsi_transfer_finish()
1175 		exynos_dsi_read_from_fifo(dsi, xfer);  in exynos_dsi_transfer_finish()
1180 	spin_lock_irqsave(&dsi->transfer_lock, flags);  in exynos_dsi_transfer_finish()
1183 	start = !list_empty(&dsi->transfer_list);  in exynos_dsi_transfer_finish()
1185 	spin_unlock_irqrestore(&dsi->transfer_lock, flags);  in exynos_dsi_transfer_finish()
1194 static void exynos_dsi_remove_transfer(struct exynos_dsi *dsi,  in exynos_dsi_remove_transfer()  argument
1200 	spin_lock_irqsave(&dsi->transfer_lock, flags);  in exynos_dsi_remove_transfer()
1202 	if (!list_empty(&dsi->transfer_list) &&  in exynos_dsi_remove_transfer()
1203 	    xfer == list_first_entry(&dsi->transfer_list,  in exynos_dsi_remove_transfer()
1206 		start = !list_empty(&dsi->transfer_list);  in exynos_dsi_remove_transfer()
1207 		spin_unlock_irqrestore(&dsi->transfer_lock, flags);  in exynos_dsi_remove_transfer()
1209 			exynos_dsi_transfer_start(dsi);  in exynos_dsi_remove_transfer()
1215 	spin_unlock_irqrestore(&dsi->transfer_lock, flags);  in exynos_dsi_remove_transfer()
1218 static int exynos_dsi_transfer(struct exynos_dsi *dsi,  in exynos_dsi_transfer()  argument
1229 	spin_lock_irqsave(&dsi->transfer_lock, flags);  in exynos_dsi_transfer()
1231 	stopped = list_empty(&dsi->transfer_list);  in exynos_dsi_transfer()
1232 	list_add_tail(&xfer->list, &dsi->transfer_list);  in exynos_dsi_transfer()
1234 	spin_unlock_irqrestore(&dsi->transfer_lock, flags);  in exynos_dsi_transfer()
1237 		exynos_dsi_transfer_start(dsi);  in exynos_dsi_transfer()
1243 		exynos_dsi_remove_transfer(dsi, xfer);  in exynos_dsi_transfer()
1244 		dev_err(dsi->dev, "xfer timed out: %*ph %*ph\n", 4, pkt->header,  in exynos_dsi_transfer()
1255 	struct exynos_dsi *dsi = dev_id;  in exynos_dsi_irq()  local
1258 	status = exynos_dsi_read(dsi, DSIM_INTSRC_REG);  in exynos_dsi_irq()
1262 			dev_warn(dsi->dev, "spurious interrupt\n");  in exynos_dsi_irq()
1265 	exynos_dsi_write(dsi, DSIM_INTSRC_REG, status);  in exynos_dsi_irq()
1271 		exynos_dsi_write(dsi, DSIM_INTMSK_REG, mask);  in exynos_dsi_irq()
1272 		complete(&dsi->completed);  in exynos_dsi_irq()
1280 	if (exynos_dsi_transfer_finish(dsi))  in exynos_dsi_irq()
1281 		exynos_dsi_transfer_start(dsi);  in exynos_dsi_irq()
1288 	struct exynos_dsi *dsi = (struct exynos_dsi *)dev_id;  in exynos_dsi_te_irq_handler()  local
1289 	struct drm_encoder *encoder = &dsi->encoder;  in exynos_dsi_te_irq_handler()
1291 	if (dsi->state & DSIM_STATE_VIDOUT_AVAILABLE)  in exynos_dsi_te_irq_handler()
1297 static void exynos_dsi_enable_irq(struct exynos_dsi *dsi)  in exynos_dsi_enable_irq()  argument
1299 	enable_irq(dsi->irq);  in exynos_dsi_enable_irq()
1301 	if (gpio_is_valid(dsi->te_gpio))  in exynos_dsi_enable_irq()
1302 		enable_irq(gpio_to_irq(dsi->te_gpio));  in exynos_dsi_enable_irq()
1305 static void exynos_dsi_disable_irq(struct exynos_dsi *dsi)  in exynos_dsi_disable_irq()  argument
1307 	if (gpio_is_valid(dsi->te_gpio))  in exynos_dsi_disable_irq()
1308 		disable_irq(gpio_to_irq(dsi->te_gpio));  in exynos_dsi_disable_irq()
1310 	disable_irq(dsi->irq);  in exynos_dsi_disable_irq()
1313 static int exynos_dsi_init(struct exynos_dsi *dsi)  in exynos_dsi_init()  argument
1315 	const struct exynos_dsi_driver_data *driver_data = dsi->driver_data;  in exynos_dsi_init()
1317 	exynos_dsi_reset(dsi);  in exynos_dsi_init()
1318 	exynos_dsi_enable_irq(dsi);  in exynos_dsi_init()
1321 		exynos_dsi_enable_lane(dsi, BIT(dsi->lanes) - 1);  in exynos_dsi_init()
1323 	exynos_dsi_enable_clock(dsi);  in exynos_dsi_init()
1325 		exynos_dsi_wait_for_reset(dsi);  in exynos_dsi_init()
1326 	exynos_dsi_set_phy_ctrl(dsi);  in exynos_dsi_init()
1327 	exynos_dsi_init_link(dsi);  in exynos_dsi_init()
1332 static int exynos_dsi_register_te_irq(struct exynos_dsi *dsi,  in exynos_dsi_register_te_irq()  argument
1338 	dsi->te_gpio = of_get_named_gpio(panel->of_node, "te-gpios", 0);  in exynos_dsi_register_te_irq()
1339 	if (dsi->te_gpio == -ENOENT)  in exynos_dsi_register_te_irq()
1342 	if (!gpio_is_valid(dsi->te_gpio)) {  in exynos_dsi_register_te_irq()
1343 		ret = dsi->te_gpio;  in exynos_dsi_register_te_irq()
1344 		dev_err(dsi->dev, "cannot get te-gpios, %d\n", ret);  in exynos_dsi_register_te_irq()
1348 	ret = gpio_request(dsi->te_gpio, "te_gpio");  in exynos_dsi_register_te_irq()
1350 		dev_err(dsi->dev, "gpio request failed with %d\n", ret);  in exynos_dsi_register_te_irq()
1354 	te_gpio_irq = gpio_to_irq(dsi->te_gpio);  in exynos_dsi_register_te_irq()
1357 				   IRQF_TRIGGER_RISING | IRQF_NO_AUTOEN, "TE", dsi);  in exynos_dsi_register_te_irq()
1359 		dev_err(dsi->dev, "request interrupt failed with %d\n", ret);  in exynos_dsi_register_te_irq()
1360 		gpio_free(dsi->te_gpio);  in exynos_dsi_register_te_irq()
1368 static void exynos_dsi_unregister_te_irq(struct exynos_dsi *dsi)  in exynos_dsi_unregister_te_irq()  argument
1370 	if (gpio_is_valid(dsi->te_gpio)) {  in exynos_dsi_unregister_te_irq()
1371 		free_irq(gpio_to_irq(dsi->te_gpio), dsi);  in exynos_dsi_unregister_te_irq()
1372 		gpio_free(dsi->te_gpio);  in exynos_dsi_unregister_te_irq()
1373 		dsi->te_gpio = -ENOENT;  in exynos_dsi_unregister_te_irq()
1379 	struct exynos_dsi *dsi = encoder_to_dsi(encoder);  in exynos_dsi_enable()  local
1383 	if (dsi->state & DSIM_STATE_ENABLED)  in exynos_dsi_enable()
1386 	ret = pm_runtime_resume_and_get(dsi->dev);  in exynos_dsi_enable()
1388 		dev_err(dsi->dev, "failed to enable DSI device.\n");  in exynos_dsi_enable()
1392 	dsi->state |= DSIM_STATE_ENABLED;  in exynos_dsi_enable()
1394 	if (dsi->panel) {  in exynos_dsi_enable()
1395 		ret = drm_panel_prepare(dsi->panel);  in exynos_dsi_enable()
1399 		list_for_each_entry_reverse(iter, &dsi->bridge_chain,  in exynos_dsi_enable()
1406 	exynos_dsi_set_display_mode(dsi);  in exynos_dsi_enable()
1407 	exynos_dsi_set_display_enable(dsi, true);  in exynos_dsi_enable()
1409 	if (dsi->panel) {  in exynos_dsi_enable()
1410 		ret = drm_panel_enable(dsi->panel);  in exynos_dsi_enable()
1414 		list_for_each_entry(iter, &dsi->bridge_chain, chain_node) {  in exynos_dsi_enable()
1420 	dsi->state |= DSIM_STATE_VIDOUT_AVAILABLE;  in exynos_dsi_enable()
1424 	exynos_dsi_set_display_enable(dsi, false);  in exynos_dsi_enable()
1425 	drm_panel_unprepare(dsi->panel);  in exynos_dsi_enable()
1428 	dsi->state &= ~DSIM_STATE_ENABLED;  in exynos_dsi_enable()
1429 	pm_runtime_put(dsi->dev);  in exynos_dsi_enable()
1434 	struct exynos_dsi *dsi = encoder_to_dsi(encoder);  in exynos_dsi_disable()  local
1437 	if (!(dsi->state & DSIM_STATE_ENABLED))  in exynos_dsi_disable()
1440 	dsi->state &= ~DSIM_STATE_VIDOUT_AVAILABLE;  in exynos_dsi_disable()
1442 	drm_panel_disable(dsi->panel);  in exynos_dsi_disable()
1444 	list_for_each_entry_reverse(iter, &dsi->bridge_chain, chain_node) {  in exynos_dsi_disable()
1449 	exynos_dsi_set_display_enable(dsi, false);  in exynos_dsi_disable()
1450 	drm_panel_unprepare(dsi->panel);  in exynos_dsi_disable()
1452 	list_for_each_entry(iter, &dsi->bridge_chain, chain_node) {  in exynos_dsi_disable()
1457 	dsi->state &= ~DSIM_STATE_ENABLED;  in exynos_dsi_disable()
1458 	pm_runtime_put_sync(dsi->dev);  in exynos_dsi_disable()
1485 	struct exynos_dsi *dsi = connector_to_dsi(connector);  in exynos_dsi_get_modes()  local
1487 	if (dsi->panel)  in exynos_dsi_get_modes()
1488 		return drm_panel_get_modes(dsi->panel, connector);  in exynos_dsi_get_modes()
1499 	struct exynos_dsi *dsi = encoder_to_dsi(encoder);  in exynos_dsi_create_connector()  local
1500 	struct drm_connector *connector = &dsi->connector;  in exynos_dsi_create_connector()
1509 		DRM_DEV_ERROR(dsi->dev,  in exynos_dsi_create_connector()
1535 	struct exynos_dsi *dsi = host_to_dsi(host);  in exynos_dsi_host_attach()  local
1536 	struct drm_encoder *encoder = &dsi->encoder;  in exynos_dsi_host_attach()
1543 		dsi->out_bridge = out_bridge;  in exynos_dsi_host_attach()
1544 		list_splice_init(&encoder->bridge_chain, &dsi->bridge_chain);  in exynos_dsi_host_attach()
1549 			DRM_DEV_ERROR(dsi->dev,  in exynos_dsi_host_attach()
1556 		dsi->panel = of_drm_find_panel(device->dev.of_node);  in exynos_dsi_host_attach()
1557 		if (IS_ERR(dsi->panel))  in exynos_dsi_host_attach()
1558 			dsi->panel = NULL;  in exynos_dsi_host_attach()
1560 			dsi->connector.status = connector_status_connected;  in exynos_dsi_host_attach()
1566 	 * If attached panel device is for command mode one, dsi should register  in exynos_dsi_host_attach()
1570 		int ret = exynos_dsi_register_te_irq(dsi, &device->dev);  in exynos_dsi_host_attach()
1577 	dsi->lanes = device->lanes;  in exynos_dsi_host_attach()
1578 	dsi->format = device->format;  in exynos_dsi_host_attach()
1579 	dsi->mode_flags = device->mode_flags;  in exynos_dsi_host_attach()
1581 			!(dsi->mode_flags & MIPI_DSI_MODE_VIDEO);  in exynos_dsi_host_attach()
1594 	struct exynos_dsi *dsi = host_to_dsi(host);  in exynos_dsi_host_detach()  local
1595 	struct drm_device *drm = dsi->encoder.dev;  in exynos_dsi_host_detach()
1597 	if (dsi->panel) {  in exynos_dsi_host_detach()
1599 		exynos_dsi_disable(&dsi->encoder);  in exynos_dsi_host_detach()
1600 		dsi->panel = NULL;  in exynos_dsi_host_detach()
1601 		dsi->connector.status = connector_status_disconnected;  in exynos_dsi_host_detach()
1604 		if (dsi->out_bridge->funcs->detach)  in exynos_dsi_host_detach()
1605 			dsi->out_bridge->funcs->detach(dsi->out_bridge);  in exynos_dsi_host_detach()
1606 		dsi->out_bridge = NULL;  in exynos_dsi_host_detach()
1607 		INIT_LIST_HEAD(&dsi->bridge_chain);  in exynos_dsi_host_detach()
1613 	exynos_dsi_unregister_te_irq(dsi);  in exynos_dsi_host_detach()
1621 	struct exynos_dsi *dsi = host_to_dsi(host);  in exynos_dsi_host_transfer()  local
1625 	if (!(dsi->state & DSIM_STATE_ENABLED))  in exynos_dsi_host_transfer()
1628 	if (!(dsi->state & DSIM_STATE_INITIALIZED)) {  in exynos_dsi_host_transfer()
1629 		ret = exynos_dsi_init(dsi);  in exynos_dsi_host_transfer()
1632 		dsi->state |= DSIM_STATE_INITIALIZED;  in exynos_dsi_host_transfer()
1643 	ret = exynos_dsi_transfer(dsi, &xfer);  in exynos_dsi_host_transfer()
1669 static int exynos_dsi_parse_dt(struct exynos_dsi *dsi)  in exynos_dsi_parse_dt()  argument
1671 	struct device *dev = dsi->dev;  in exynos_dsi_parse_dt()
1676 				     &dsi->pll_clk_rate);  in exynos_dsi_parse_dt()
1681 				     &dsi->burst_clk_rate);  in exynos_dsi_parse_dt()
1686 				     &dsi->esc_clk_rate);  in exynos_dsi_parse_dt()
1696 	struct exynos_dsi *dsi = dev_get_drvdata(dev);  in exynos_dsi_bind()  local
1697 	struct drm_encoder *encoder = &dsi->encoder;  in exynos_dsi_bind()
1719 	return mipi_dsi_host_register(&dsi->dsi_host);  in exynos_dsi_bind()
1725 	struct exynos_dsi *dsi = dev_get_drvdata(dev);  in exynos_dsi_unbind()  local
1726 	struct drm_encoder *encoder = &dsi->encoder;  in exynos_dsi_unbind()
1730 	mipi_dsi_host_unregister(&dsi->dsi_host);  in exynos_dsi_unbind()
1741 	struct exynos_dsi *dsi;  in exynos_dsi_probe()  local
1744 	dsi = devm_kzalloc(dev, sizeof(*dsi), GFP_KERNEL);  in exynos_dsi_probe()
1745 	if (!dsi)  in exynos_dsi_probe()
1749 	dsi->te_gpio = -ENOENT;  in exynos_dsi_probe()
1751 	init_completion(&dsi->completed);  in exynos_dsi_probe()
1752 	spin_lock_init(&dsi->transfer_lock);  in exynos_dsi_probe()
1753 	INIT_LIST_HEAD(&dsi->transfer_list);  in exynos_dsi_probe()
1754 	INIT_LIST_HEAD(&dsi->bridge_chain);  in exynos_dsi_probe()
1756 	dsi->dsi_host.ops = &exynos_dsi_ops;  in exynos_dsi_probe()
1757 	dsi->dsi_host.dev = dev;  in exynos_dsi_probe()
1759 	dsi->dev = dev;  in exynos_dsi_probe()
1760 	dsi->driver_data = of_device_get_match_data(dev);  in exynos_dsi_probe()
1762 	dsi->supplies[0].supply = "vddcore";  in exynos_dsi_probe()
1763 	dsi->supplies[1].supply = "vddio";  in exynos_dsi_probe()
1764 	ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(dsi->supplies),  in exynos_dsi_probe()
1765 				      dsi->supplies);  in exynos_dsi_probe()
1769 	dsi->clks = devm_kcalloc(dev,  in exynos_dsi_probe()
1770 			dsi->driver_data->num_clks, sizeof(*dsi->clks),  in exynos_dsi_probe()
1772 	if (!dsi->clks)  in exynos_dsi_probe()
1775 	for (i = 0; i < dsi->driver_data->num_clks; i++) {  in exynos_dsi_probe()
1776 		dsi->clks[i] = devm_clk_get(dev, clk_names[i]);  in exynos_dsi_probe()
1777 		if (IS_ERR(dsi->clks[i])) {  in exynos_dsi_probe()
1779 				dsi->clks[i] = devm_clk_get(dev,  in exynos_dsi_probe()
1781 				if (!IS_ERR(dsi->clks[i]))  in exynos_dsi_probe()
1787 			return PTR_ERR(dsi->clks[i]);  in exynos_dsi_probe()
1791 	dsi->reg_base = devm_platform_ioremap_resource(pdev, 0);  in exynos_dsi_probe()
1792 	if (IS_ERR(dsi->reg_base))  in exynos_dsi_probe()
1793 		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 	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);  in exynos_dsi_probe()
1845 	struct exynos_dsi *dsi = dev_get_drvdata(dev);  in exynos_dsi_suspend()  local
1846 	const struct exynos_dsi_driver_data *driver_data = dsi->driver_data;  in exynos_dsi_suspend()
1851 	if (dsi->state & DSIM_STATE_INITIALIZED) {  in exynos_dsi_suspend()
1852 		dsi->state &= ~DSIM_STATE_INITIALIZED;  in exynos_dsi_suspend()
1854 		exynos_dsi_disable_clock(dsi);  in exynos_dsi_suspend()
1856 		exynos_dsi_disable_irq(dsi);  in exynos_dsi_suspend()
1859 	dsi->state &= ~DSIM_STATE_CMD_LPM;  in exynos_dsi_suspend()
1861 	phy_power_off(dsi->phy);  in exynos_dsi_suspend()
1864 		clk_disable_unprepare(dsi->clks[i]);  in exynos_dsi_suspend()
1866 	ret = regulator_bulk_disable(ARRAY_SIZE(dsi->supplies), dsi->supplies);  in exynos_dsi_suspend()
1868 		dev_err(dsi->dev, "cannot disable regulators %d\n", ret);  in exynos_dsi_suspend()
1875 	struct exynos_dsi *dsi = dev_get_drvdata(dev);  in exynos_dsi_resume()  local
1876 	const struct exynos_dsi_driver_data *driver_data = dsi->driver_data;  in exynos_dsi_resume()
1879 	ret = regulator_bulk_enable(ARRAY_SIZE(dsi->supplies), dsi->supplies);  in exynos_dsi_resume()
1881 		dev_err(dsi->dev, "cannot enable regulators %d\n", ret);  in exynos_dsi_resume()
1886 		ret = clk_prepare_enable(dsi->clks[i]);  in exynos_dsi_resume()
1891 	ret = phy_power_on(dsi->phy);  in exynos_dsi_resume()
1893 		dev_err(dsi->dev, "cannot enable phy %d\n", ret);  in exynos_dsi_resume()
1901 		clk_disable_unprepare(dsi->clks[i]);  in exynos_dsi_resume()
1902 	regulator_bulk_disable(ARRAY_SIZE(dsi->supplies), dsi->supplies);  in exynos_dsi_resume()
1917 		   .name = "exynos-dsi",
1926 MODULE_DESCRIPTION("Samsung SoC MIPI DSI Master");