1 // SPDX-License-Identifier: GPL-2.0-only
3  * Samsung S5P/Exynos SoC series MIPI CSIS/DSIM DPHY driver
16 #include <linux/phy/phy.h>
19 #include <linux/soc/samsung/exynos-regs-pmu.h>
23 	EXYNOS_MIPI_PHY_ID_NONE = -1,
161 		"samsung,pmu-syscon",
162 		"samsung,disp-sysreg",
163 		"samsung,cam0-sysreg",
164 		"samsung,cam1-sysreg"
221 		struct phy *phy;  member
231 	struct regmap *enable_map = state->regmaps[data->enable_map];  in __set_phy_state()
232 	struct regmap *resetn_map = state->regmaps[data->resetn_map];  in __set_phy_state()
234 	spin_lock(&state->slock);  in __set_phy_state()
237 	if (!on && data->coupled_phy_id >= 0 &&  in __set_phy_state()
238 	    state->phys[data->coupled_phy_id].phy->power_count == 0)  in __set_phy_state()
239 		regmap_update_bits(enable_map, data->enable_reg,  in __set_phy_state()
240 				   data->enable_val, 0);  in __set_phy_state()
241 	/* PHY reset */  in __set_phy_state()
243 		regmap_update_bits(resetn_map, data->resetn_reg,  in __set_phy_state()
244 				   data->resetn_val, data->resetn_val);  in __set_phy_state()
246 		regmap_update_bits(resetn_map, data->resetn_reg,  in __set_phy_state()
247 				   data->resetn_val, 0);  in __set_phy_state()
250 		regmap_update_bits(enable_map, data->enable_reg,  in __set_phy_state()
251 				   data->enable_val, data->enable_val);  in __set_phy_state()
253 	spin_unlock(&state->slock);  in __set_phy_state()
259 	container_of((desc), struct exynos_mipi_video_phy, phys[(desc)->index])
261 static int exynos_mipi_video_phy_power_on(struct phy *phy)  in exynos_mipi_video_phy_power_on()  argument
263 	struct video_phy_desc *phy_desc = phy_get_drvdata(phy);  in exynos_mipi_video_phy_power_on()
266 	return __set_phy_state(phy_desc->data, state, 1);  in exynos_mipi_video_phy_power_on()
269 static int exynos_mipi_video_phy_power_off(struct phy *phy)  in exynos_mipi_video_phy_power_off()  argument
271 	struct video_phy_desc *phy_desc = phy_get_drvdata(phy);  in exynos_mipi_video_phy_power_off()
274 	return __set_phy_state(phy_desc->data, state, 0);  in exynos_mipi_video_phy_power_off()
277 static struct phy *exynos_mipi_video_phy_xlate(struct device *dev,  in exynos_mipi_video_phy_xlate()
282 	if (WARN_ON(args->args[0] >= state->num_phys))  in exynos_mipi_video_phy_xlate()
283 		return ERR_PTR(-ENODEV);  in exynos_mipi_video_phy_xlate()
285 	return state->phys[args->args[0]].phy;  in exynos_mipi_video_phy_xlate()
298 	struct device *dev = &pdev->dev;  in exynos_mipi_video_phy_probe()
299 	struct device_node *np = dev->of_node;  in exynos_mipi_video_phy_probe()
305 		return -ENODEV;  in exynos_mipi_video_phy_probe()
309 		return -ENOMEM;  in exynos_mipi_video_phy_probe()
311 	for (i = 0; i < phy_dev->num_regmaps; i++) {  in exynos_mipi_video_phy_probe()
312 		state->regmaps[i] = syscon_regmap_lookup_by_phandle(np,  in exynos_mipi_video_phy_probe()
313 						phy_dev->regmap_names[i]);  in exynos_mipi_video_phy_probe()
314 		if (IS_ERR(state->regmaps[i]))  in exynos_mipi_video_phy_probe()
315 			return PTR_ERR(state->regmaps[i]);  in exynos_mipi_video_phy_probe()
317 	state->num_phys = phy_dev->num_phys;  in exynos_mipi_video_phy_probe()
318 	spin_lock_init(&state->slock);  in exynos_mipi_video_phy_probe()
322 	for (i = 0; i < state->num_phys; i++) {  in exynos_mipi_video_phy_probe()
323 		struct phy *phy = devm_phy_create(dev, NULL,  in exynos_mipi_video_phy_probe()  local
325 		if (IS_ERR(phy)) {  in exynos_mipi_video_phy_probe()
326 			dev_err(dev, "failed to create PHY %d\n", i);  in exynos_mipi_video_phy_probe()
327 			return PTR_ERR(phy);  in exynos_mipi_video_phy_probe()
330 		state->phys[i].phy = phy;  in exynos_mipi_video_phy_probe()
331 		state->phys[i].index = i;  in exynos_mipi_video_phy_probe()
332 		state->phys[i].data = &phy_dev->phys[i];  in exynos_mipi_video_phy_probe()
333 		phy_set_drvdata(phy, &state->phys[i]);  in exynos_mipi_video_phy_probe()
344 		.compatible = "samsung,s5pv210-mipi-video-phy",
347 		.compatible = "samsung,exynos5420-mipi-video-phy",
350 		.compatible = "samsung,exynos5433-mipi-video-phy",
361 		.name  = "exynos-mipi-video-phy",
367 MODULE_DESCRIPTION("Samsung S5P/Exynos SoC MIPI CSI-2/DSI PHY driver");