1 // SPDX-License-Identifier: GPL-2.0-only
3  * Samsung S5P/Exynos SoC series MIPI CSIS/DSIM DPHY driver
14 #include <linux/phy/phy.h>
18 #include <linux/soc/samsung/exynos-regs-pmu.h>
22 	EXYNOS_MIPI_PHY_ID_NONE = -1,
160 		"samsung,pmu-syscon",
161 		"samsung,disp-sysreg",
162 		"samsung,cam0-sysreg",
163 		"samsung,cam1-sysreg"
220 		struct phy *phy;  member
230 	struct regmap *enable_map = state->regmaps[data->enable_map];  in __set_phy_state()
231 	struct regmap *resetn_map = state->regmaps[data->resetn_map];  in __set_phy_state()
233 	spin_lock(&state->slock);  in __set_phy_state()
236 	if (!on && data->coupled_phy_id >= 0 &&  in __set_phy_state()
237 	    state->phys[data->coupled_phy_id].phy->power_count == 0)  in __set_phy_state()
238 		regmap_update_bits(enable_map, data->enable_reg,  in __set_phy_state()
239 				   data->enable_val, 0);  in __set_phy_state()
240 	/* PHY reset */  in __set_phy_state()
242 		regmap_update_bits(resetn_map, data->resetn_reg,  in __set_phy_state()
243 				   data->resetn_val, data->resetn_val);  in __set_phy_state()
245 		regmap_update_bits(resetn_map, data->resetn_reg,  in __set_phy_state()
246 				   data->resetn_val, 0);  in __set_phy_state()
249 		regmap_update_bits(enable_map, data->enable_reg,  in __set_phy_state()
250 				   data->enable_val, data->enable_val);  in __set_phy_state()
252 	spin_unlock(&state->slock);  in __set_phy_state()
258 	container_of((desc), struct exynos_mipi_video_phy, phys[(desc)->index])
260 static int exynos_mipi_video_phy_power_on(struct phy *phy)  in exynos_mipi_video_phy_power_on()  argument
262 	struct video_phy_desc *phy_desc = phy_get_drvdata(phy);  in exynos_mipi_video_phy_power_on()
265 	return __set_phy_state(phy_desc->data, state, 1);  in exynos_mipi_video_phy_power_on()
268 static int exynos_mipi_video_phy_power_off(struct phy *phy)  in exynos_mipi_video_phy_power_off()  argument
270 	struct video_phy_desc *phy_desc = phy_get_drvdata(phy);  in exynos_mipi_video_phy_power_off()
273 	return __set_phy_state(phy_desc->data, state, 0);  in exynos_mipi_video_phy_power_off()
276 static struct phy *exynos_mipi_video_phy_xlate(struct device *dev,  in exynos_mipi_video_phy_xlate()
281 	if (WARN_ON(args->args[0] >= state->num_phys))  in exynos_mipi_video_phy_xlate()
282 		return ERR_PTR(-ENODEV);  in exynos_mipi_video_phy_xlate()
284 	return state->phys[args->args[0]].phy;  in exynos_mipi_video_phy_xlate()
297 	struct device *dev = &pdev->dev;  in exynos_mipi_video_phy_probe()
298 	struct device_node *np = dev->of_node;  in exynos_mipi_video_phy_probe()
304 		return -ENODEV;  in exynos_mipi_video_phy_probe()
308 		return -ENOMEM;  in exynos_mipi_video_phy_probe()
310 	state->regmaps[i] = syscon_node_to_regmap(dev->parent->of_node);  in exynos_mipi_video_phy_probe()
311 	if (!IS_ERR(state->regmaps[i]))  in exynos_mipi_video_phy_probe()
313 	for (; i < phy_dev->num_regmaps; i++) {  in exynos_mipi_video_phy_probe()
314 		state->regmaps[i] = syscon_regmap_lookup_by_phandle(np,  in exynos_mipi_video_phy_probe()
315 						phy_dev->regmap_names[i]);  in exynos_mipi_video_phy_probe()
316 		if (IS_ERR(state->regmaps[i]))  in exynos_mipi_video_phy_probe()
317 			return PTR_ERR(state->regmaps[i]);  in exynos_mipi_video_phy_probe()
319 	state->num_phys = phy_dev->num_phys;  in exynos_mipi_video_phy_probe()
320 	spin_lock_init(&state->slock);  in exynos_mipi_video_phy_probe()
324 	for (i = 0; i < state->num_phys; i++) {  in exynos_mipi_video_phy_probe()
325 		struct phy *phy = devm_phy_create(dev, NULL,  in exynos_mipi_video_phy_probe()  local
327 		if (IS_ERR(phy)) {  in exynos_mipi_video_phy_probe()
328 			dev_err(dev, "failed to create PHY %d\n", i);  in exynos_mipi_video_phy_probe()
329 			return PTR_ERR(phy);  in exynos_mipi_video_phy_probe()
332 		state->phys[i].phy = phy;  in exynos_mipi_video_phy_probe()
333 		state->phys[i].index = i;  in exynos_mipi_video_phy_probe()
334 		state->phys[i].data = &phy_dev->phys[i];  in exynos_mipi_video_phy_probe()
335 		phy_set_drvdata(phy, &state->phys[i]);  in exynos_mipi_video_phy_probe()
346 		.compatible = "samsung,s5pv210-mipi-video-phy",
349 		.compatible = "samsung,exynos5420-mipi-video-phy",
352 		.compatible = "samsung,exynos5433-mipi-video-phy",
363 		.name  = "exynos-mipi-video-phy",
369 MODULE_DESCRIPTION("Samsung S5P/Exynos SoC MIPI CSI-2/DSI PHY driver");