2  * Allwinner sun4i USB PHY driver
8  * Modelled arch/arm/mach-sunxi/usb_phy.c to compatible with generic-phy.
10  * SPDX-License-Identifier:	GPL-2.0+
17 #include <generic-phy.h>
18 #include <phy-sun4i-usb.h>
37 /* Private Control Bits for Each PHY */
136 static void sun4i_usb_phy_write(struct phy *phy, u32 addr, u32 data, int len)  in sun4i_usb_phy_write()  argument
138 	struct sun4i_usb_phy_data *phy_data = dev_get_priv(phy->dev);  in sun4i_usb_phy_write()
139 	struct sun4i_usb_phy_plat *usb_phy = &phy_data->usb_phy[phy->id];  in sun4i_usb_phy_write()
140 	u32 temp, usbc_bit = BIT(usb_phy->id * 2);  in sun4i_usb_phy_write()
141 	void __iomem *phyctl = phy_data->base + phy_data->cfg->phyctl_offset;  in sun4i_usb_phy_write()
144 	if (phy_data->cfg->phyctl_offset == REG_PHYCTL_A33) {  in sun4i_usb_phy_write()
181 static void sun4i_usb_phy_passby(struct phy *phy, bool enable)  in sun4i_usb_phy_passby()  argument
183 	struct sun4i_usb_phy_data *data = dev_get_priv(phy->dev);  in sun4i_usb_phy_passby()
184 	struct sun4i_usb_phy_plat *usb_phy = &data->usb_phy[phy->id];  in sun4i_usb_phy_passby()
187 	if (!usb_phy->pmu)  in sun4i_usb_phy_passby()
194 	if (data->cfg->type == sun8i_a83t_phy && usb_phy->id == 2)  in sun4i_usb_phy_passby()
198 	reg_value = readl(usb_phy->pmu);  in sun4i_usb_phy_passby()
205 	writel(reg_value, usb_phy->pmu);  in sun4i_usb_phy_passby()
208 static int sun4i_usb_phy_power_on(struct phy *phy)  in sun4i_usb_phy_power_on()  argument
210 	struct sun4i_usb_phy_data *data = dev_get_priv(phy->dev);  in sun4i_usb_phy_power_on()
211 	struct sun4i_usb_phy_plat *usb_phy = &data->usb_phy[phy->id];  in sun4i_usb_phy_power_on()
218 	usb_phy->power_on_count++;  in sun4i_usb_phy_power_on()
219 	if (usb_phy->power_on_count != 1)  in sun4i_usb_phy_power_on()
222 	if (usb_phy->gpio_vbus >= 0)  in sun4i_usb_phy_power_on()
223 		gpio_set_value(usb_phy->gpio_vbus, SUNXI_GPIO_PULL_UP);  in sun4i_usb_phy_power_on()
228 static int sun4i_usb_phy_power_off(struct phy *phy)  in sun4i_usb_phy_power_off()  argument
230 	struct sun4i_usb_phy_data *data = dev_get_priv(phy->dev);  in sun4i_usb_phy_power_off()
231 	struct sun4i_usb_phy_plat *usb_phy = &data->usb_phy[phy->id];  in sun4i_usb_phy_power_off()
233 	usb_phy->power_on_count--;  in sun4i_usb_phy_power_off()
234 	if (usb_phy->power_on_count != 0)  in sun4i_usb_phy_power_off()
237 	if (usb_phy->gpio_vbus >= 0)  in sun4i_usb_phy_power_off()
238 		gpio_set_value(usb_phy->gpio_vbus, SUNXI_GPIO_PULL_DISABLE);  in sun4i_usb_phy_power_off()
247 	regval = readl(data->base + REG_PHY_OTGCTL);  in sun4i_usb_phy0_reroute()
255 	writel(regval, data->base + REG_PHY_OTGCTL);  in sun4i_usb_phy0_reroute()
258 static int sun4i_usb_phy_init(struct phy *phy)  in sun4i_usb_phy_init()  argument
260 	struct sun4i_usb_phy_data *data = dev_get_priv(phy->dev);  in sun4i_usb_phy_init()
261 	struct sun4i_usb_phy_plat *usb_phy = &data->usb_phy[phy->id];  in sun4i_usb_phy_init()
265 	ret = clk_enable(&usb_phy->clocks);  in sun4i_usb_phy_init()
267 		dev_err(dev, "failed to enable usb_%ldphy clock\n", phy->id);  in sun4i_usb_phy_init()
271 	ret = reset_deassert(&usb_phy->resets);  in sun4i_usb_phy_init()
273 		dev_err(dev, "failed to deassert usb_%ldreset reset\n", phy->id);  in sun4i_usb_phy_init()
277 	if (data->cfg->type == sun8i_a83t_phy) {  in sun4i_usb_phy_init()
278 		if (phy->id == 0) {  in sun4i_usb_phy_init()
279 			val = readl(data->base + data->cfg->phyctl_offset);  in sun4i_usb_phy_init()
282 			writel(val, data->base + data->cfg->phyctl_offset);  in sun4i_usb_phy_init()
285 		if (usb_phy->pmu && data->cfg->enable_pmu_unk1) {  in sun4i_usb_phy_init()
286 			val = readl(usb_phy->pmu + REG_PMU_UNK1);  in sun4i_usb_phy_init()
287 			writel(val & ~2, usb_phy->pmu + REG_PMU_UNK1);  in sun4i_usb_phy_init()
290 		if (usb_phy->id == 0)  in sun4i_usb_phy_init()
291 			sun4i_usb_phy_write(phy, PHY_RES45_CAL_EN,  in sun4i_usb_phy_init()
295 		/* Adjust PHY's magnitude and rate */  in sun4i_usb_phy_init()
296 		sun4i_usb_phy_write(phy, PHY_TX_AMPLITUDE_TUNE,  in sun4i_usb_phy_init()
301 		sun4i_usb_phy_write(phy, PHY_DISCON_TH_SEL,  in sun4i_usb_phy_init()
302 				    data->cfg->disc_thresh, PHY_DISCON_TH_LEN);  in sun4i_usb_phy_init()
305 	sun4i_usb_phy_passby(phy, true);  in sun4i_usb_phy_init()
312 static int sun4i_usb_phy_exit(struct phy *phy)  in sun4i_usb_phy_exit()  argument
314 	struct sun4i_usb_phy_data *data = dev_get_priv(phy->dev);  in sun4i_usb_phy_exit()
315 	struct sun4i_usb_phy_plat *usb_phy = &data->usb_phy[phy->id];  in sun4i_usb_phy_exit()
318 	if (phy->id == 0) {  in sun4i_usb_phy_exit()
319 		if (data->cfg->type == sun8i_a83t_phy) {  in sun4i_usb_phy_exit()
320 			void __iomem *phyctl = data->base +  in sun4i_usb_phy_exit()
321 				data->cfg->phyctl_offset;  in sun4i_usb_phy_exit()
327 	sun4i_usb_phy_passby(phy, false);  in sun4i_usb_phy_exit()
329 	ret = clk_disable(&usb_phy->clocks);  in sun4i_usb_phy_exit()
331 		dev_err(dev, "failed to disable usb_%ldphy clock\n", phy->id);  in sun4i_usb_phy_exit()
335 	ret = reset_assert(&usb_phy->resets);  in sun4i_usb_phy_exit()
337 		dev_err(dev, "failed to assert usb_%ldreset reset\n", phy->id);  in sun4i_usb_phy_exit()
344 static int sun4i_usb_phy_xlate(struct phy *phy,  in sun4i_usb_phy_xlate()  argument
347 	struct sun4i_usb_phy_data *data = dev_get_priv(phy->dev);  in sun4i_usb_phy_xlate()
349 	if (args->args_count >= data->cfg->num_phys)  in sun4i_usb_phy_xlate()
350 		return -EINVAL;  in sun4i_usb_phy_xlate()
352 	if (args->args_count)  in sun4i_usb_phy_xlate()
353 		phy->id = args->args[0];  in sun4i_usb_phy_xlate()
355 		phy->id = 0;  in sun4i_usb_phy_xlate()
357 	debug("%s: phy_id = %ld\n", __func__, phy->id);  in sun4i_usb_phy_xlate()
361 int sun4i_usb_phy_vbus_detect(struct phy *phy)  in sun4i_usb_phy_vbus_detect()  argument
363 	struct sun4i_usb_phy_data *data = dev_get_priv(phy->dev);  in sun4i_usb_phy_vbus_detect()
364 	struct sun4i_usb_phy_plat *usb_phy = &data->usb_phy[phy->id];  in sun4i_usb_phy_vbus_detect()
367 	debug("%s: id_det = %d\n", __func__, usb_phy->gpio_id_det);  in sun4i_usb_phy_vbus_detect()
369 	if (usb_phy->gpio_vbus_det < 0)  in sun4i_usb_phy_vbus_detect()
370 		return usb_phy->gpio_vbus_det;  in sun4i_usb_phy_vbus_detect()
372 	err = gpio_get_value(usb_phy->gpio_vbus_det);  in sun4i_usb_phy_vbus_detect()
378 	while (err > 0 && retries--) {  in sun4i_usb_phy_vbus_detect()
380 		err = gpio_get_value(usb_phy->gpio_vbus_det);  in sun4i_usb_phy_vbus_detect()
386 int sun4i_usb_phy_id_detect(struct phy *phy)  in sun4i_usb_phy_id_detect()  argument
388 	struct sun4i_usb_phy_data *data = dev_get_priv(phy->dev);  in sun4i_usb_phy_id_detect()
389 	struct sun4i_usb_phy_plat *usb_phy = &data->usb_phy[phy->id];  in sun4i_usb_phy_id_detect()
391 	debug("%s: id_det = %d\n", __func__, usb_phy->gpio_id_det);  in sun4i_usb_phy_id_detect()
393 	if (usb_phy->gpio_id_det < 0)  in sun4i_usb_phy_id_detect()
394 		return usb_phy->gpio_id_det;  in sun4i_usb_phy_id_detect()
396 	return gpio_get_value(usb_phy->gpio_id_det);  in sun4i_usb_phy_id_detect()
399 void sun4i_usb_phy_set_squelch_detect(struct phy *phy, bool enabled)  in sun4i_usb_phy_set_squelch_detect()  argument
401 	sun4i_usb_phy_write(phy, PHY_SQUELCH_DETECT, enabled ? 0 : 2, 2);  in sun4i_usb_phy_set_squelch_detect()
418 	data->cfg = (const struct sun4i_usb_phy_cfg *)dev_get_driver_data(dev);  in sun4i_usb_phy_probe()
419 	if (!data->cfg)  in sun4i_usb_phy_probe()
420 		return -EINVAL;  in sun4i_usb_phy_probe()
422 	data->base = (void __iomem *)devfdt_get_addr_name(dev, "phy_ctrl");  in sun4i_usb_phy_probe()
423 	if (IS_ERR(data->base))  in sun4i_usb_phy_probe()
424 		return PTR_ERR(data->base);  in sun4i_usb_phy_probe()
426 	data->usb_phy = plat;  in sun4i_usb_phy_probe()
427 	for (i = 0; i < data->cfg->num_phys; i++) {  in sun4i_usb_phy_probe()
428 		struct sun4i_usb_phy_plat *phy = &plat[i];  in sun4i_usb_phy_probe()  local
432 		phy->gpio_vbus = sunxi_name_to_gpio(info->gpio_vbus);  in sun4i_usb_phy_probe()
433 		if (phy->gpio_vbus >= 0) {  in sun4i_usb_phy_probe()
434 			ret = gpio_request(phy->gpio_vbus, "usb_vbus");  in sun4i_usb_phy_probe()
437 			ret = gpio_direction_output(phy->gpio_vbus, 0);  in sun4i_usb_phy_probe()
442 		phy->gpio_vbus_det = sunxi_name_to_gpio(info->gpio_vbus_det);  in sun4i_usb_phy_probe()
443 		if (phy->gpio_vbus_det >= 0) {  in sun4i_usb_phy_probe()
444 			ret = gpio_request(phy->gpio_vbus_det, "usb_vbus_det");  in sun4i_usb_phy_probe()
447 			ret = gpio_direction_input(phy->gpio_vbus_det);  in sun4i_usb_phy_probe()
452 		phy->gpio_id_det = sunxi_name_to_gpio(info->gpio_id_det);  in sun4i_usb_phy_probe()
453 		if (phy->gpio_id_det >= 0) {  in sun4i_usb_phy_probe()
454 			ret = gpio_request(phy->gpio_id_det, "usb_id_det");  in sun4i_usb_phy_probe()
457 			ret = gpio_direction_input(phy->gpio_id_det);  in sun4i_usb_phy_probe()
460 			sunxi_gpio_set_pull(phy->gpio_id_det, SUNXI_GPIO_PULL_UP);  in sun4i_usb_phy_probe()
463 		if (data->cfg->dedicated_clocks)  in sun4i_usb_phy_probe()
464 			snprintf(name, sizeof(name), "usb%d_phy", i);  in sun4i_usb_phy_probe()
468 		ret = clk_get_by_name(dev, name, &phy->clocks);  in sun4i_usb_phy_probe()
470 			dev_err(dev, "failed to get usb%d_phy clock phandle\n", i);  in sun4i_usb_phy_probe()
474 		snprintf(name, sizeof(name), "usb%d_reset", i);  in sun4i_usb_phy_probe()
475 		ret = reset_get_by_name(dev, name, &phy->resets);  in sun4i_usb_phy_probe()
477 			dev_err(dev, "failed to get usb%d_reset reset phandle\n", i);  in sun4i_usb_phy_probe()
481 		if (i || data->cfg->phy0_dual_route) {  in sun4i_usb_phy_probe()
483 			phy->pmu = (void __iomem *)devfdt_get_addr_name(dev, name);  in sun4i_usb_phy_probe()
484 			if (IS_ERR(phy->pmu))  in sun4i_usb_phy_probe()
485 				return PTR_ERR(phy->pmu);  in sun4i_usb_phy_probe()
488 		phy->id = i;  in sun4i_usb_phy_probe()
491 	debug("Allwinner Sun4I USB PHY driver loaded\n");  in sun4i_usb_phy_probe()
587 	{ .compatible = "allwinner,sun4i-a10-usb-phy", .data = (ulong)&sun4i_a10_cfg },
588 	{ .compatible = "allwinner,sun5i-a13-usb-phy", .data = (ulong)&sun5i_a13_cfg },
589 	{ .compatible = "allwinner,sun6i-a31-usb-phy", .data = (ulong)&sun6i_a31_cfg },
590 	{ .compatible = "allwinner,sun7i-a20-usb-phy", .data = (ulong)&sun7i_a20_cfg },
591 	{ .compatible = "allwinner,sun8i-a23-usb-phy", .data = (ulong)&sun8i_a23_cfg },
592 	{ .compatible = "allwinner,sun8i-a33-usb-phy", .data = (ulong)&sun8i_a33_cfg },
593 	{ .compatible = "allwinner,sun8i-a83t-usb-phy", .data = (ulong)&sun8i_a83t_cfg },
594 	{ .compatible = "allwinner,sun8i-h3-usb-phy", .data = (ulong)&sun8i_h3_cfg },
595 	{ .compatible = "allwinner,sun8i-v3s-usb-phy", .data = (ulong)&sun8i_v3s_cfg },
596 	{ .compatible = "allwinner,sun50i-a64-usb-phy", .data = (ulong)&sun50i_a64_cfg},