1 files changed, 0 insertions, 648 deletions

diff --git a/drivers/phy/qualcomm/phy-qcom-ufs.c b/drivers/phy/qualcomm/phy-qcom-ufs.c
deleted file mode 100644
index 763c8d396af1..000000000000
--- a/drivers/phy/qualcomm/phy-qcom-ufs.c
+++ /dev/null
@@ -1,648 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * Copyright (c) 2013-2015, Linux Foundation. All rights reserved.
- */
-
-#include "phy-qcom-ufs-i.h"
-
-#define MAX_PROP_NAME              32
-#define VDDA_PHY_MIN_UV            1000000
-#define VDDA_PHY_MAX_UV            1000000
-#define VDDA_PLL_MIN_UV            1800000
-#define VDDA_PLL_MAX_UV            1800000
-#define VDDP_REF_CLK_MIN_UV        1200000
-#define VDDP_REF_CLK_MAX_UV        1200000
-
-int ufs_qcom_phy_calibrate(struct ufs_qcom_phy *ufs_qcom_phy,
-			   struct ufs_qcom_phy_calibration *tbl_A,
-			   int tbl_size_A,
-			   struct ufs_qcom_phy_calibration *tbl_B,
-			   int tbl_size_B, bool is_rate_B)
-{
-	int i;
-	int ret = 0;
-
-	if (!tbl_A) {
-		dev_err(ufs_qcom_phy->dev, "%s: tbl_A is NULL", __func__);
-		ret = EINVAL;
-		goto out;
-	}
-
-	for (i = 0; i < tbl_size_A; i++)
-		writel_relaxed(tbl_A[i].cfg_value,
-			       ufs_qcom_phy->mmio + tbl_A[i].reg_offset);
-
-	/*
-	 * In case we would like to work in rate B, we need
-	 * to override a registers that were configured in rate A table
-	 * with registers of rate B table.
-	 * table.
-	 */
-	if (is_rate_B) {
-		if (!tbl_B) {
-			dev_err(ufs_qcom_phy->dev, "%s: tbl_B is NULL",
-				__func__);
-			ret = EINVAL;
-			goto out;
-		}
-
-		for (i = 0; i < tbl_size_B; i++)
-			writel_relaxed(tbl_B[i].cfg_value,
-				ufs_qcom_phy->mmio + tbl_B[i].reg_offset);
-	}
-
-	/* flush buffered writes */
-	mb();
-
-out:
-	return ret;
-}
-EXPORT_SYMBOL_GPL(ufs_qcom_phy_calibrate);
-
-/*
- * This assumes the embedded phy structure inside generic_phy is of type
- * struct ufs_qcom_phy. In order to function properly it's crucial
- * to keep the embedded struct "struct ufs_qcom_phy common_cfg"
- * as the first inside generic_phy.
- */
-struct ufs_qcom_phy *get_ufs_qcom_phy(struct phy *generic_phy)
-{
-	return (struct ufs_qcom_phy *)phy_get_drvdata(generic_phy);
-}
-EXPORT_SYMBOL_GPL(get_ufs_qcom_phy);
-
-static
-int ufs_qcom_phy_base_init(struct platform_device *pdev,
-			   struct ufs_qcom_phy *phy_common)
-{
-	struct device *dev = &pdev->dev;
-	struct resource *res;
-	int err = 0;
-
-	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "phy_mem");
-	phy_common->mmio = devm_ioremap_resource(dev, res);
-	if (IS_ERR((void const *)phy_common->mmio)) {
-		err = PTR_ERR((void const *)phy_common->mmio);
-		phy_common->mmio = NULL;
-		dev_err(dev, "%s: ioremap for phy_mem resource failed %d\n",
-			__func__, err);
-		return err;
-	}
-
-	/* "dev_ref_clk_ctrl_mem" is optional resource */
-	res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
-					   "dev_ref_clk_ctrl_mem");
-	phy_common->dev_ref_clk_ctrl_mmio = devm_ioremap_resource(dev, res);
-	if (IS_ERR((void const *)phy_common->dev_ref_clk_ctrl_mmio))
-		phy_common->dev_ref_clk_ctrl_mmio = NULL;
-
-	return 0;
-}
-
-struct phy *ufs_qcom_phy_generic_probe(struct platform_device *pdev,
-				struct ufs_qcom_phy *common_cfg,
-				const struct phy_ops *ufs_qcom_phy_gen_ops,
-				struct ufs_qcom_phy_specific_ops *phy_spec_ops)
-{
-	int err;
-	struct device *dev = &pdev->dev;
-	struct phy *generic_phy = NULL;
-	struct phy_provider *phy_provider;
-
-	err = ufs_qcom_phy_base_init(pdev, common_cfg);
-	if (err) {
-		dev_err(dev, "%s: phy base init failed %d\n", __func__, err);
-		goto out;
-	}
-
-	phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate);
-	if (IS_ERR(phy_provider)) {
-		err = PTR_ERR(phy_provider);
-		dev_err(dev, "%s: failed to register phy %d\n", __func__, err);
-		goto out;
-	}
-
-	generic_phy = devm_phy_create(dev, NULL, ufs_qcom_phy_gen_ops);
-	if (IS_ERR(generic_phy)) {
-		err =  PTR_ERR(generic_phy);
-		dev_err(dev, "%s: failed to create phy %d\n", __func__, err);
-		generic_phy = NULL;
-		goto out;
-	}
-
-	common_cfg->phy_spec_ops = phy_spec_ops;
-	common_cfg->dev = dev;
-
-out:
-	return generic_phy;
-}
-EXPORT_SYMBOL_GPL(ufs_qcom_phy_generic_probe);
-
-static int ufs_qcom_phy_get_reset(struct ufs_qcom_phy *phy_common)
-{
-	struct reset_control *reset;
-
-	if (phy_common->ufs_reset)
-		return 0;
-
-	reset = devm_reset_control_get_exclusive_by_index(phy_common->dev, 0);
-	if (IS_ERR(reset))
-		return PTR_ERR(reset);
-
-	phy_common->ufs_reset = reset;
-	return 0;
-}
-
-static int __ufs_qcom_phy_clk_get(struct device *dev,
-			 const char *name, struct clk **clk_out, bool err_print)
-{
-	struct clk *clk;
-	int err = 0;
-
-	clk = devm_clk_get(dev, name);
-	if (IS_ERR(clk)) {
-		err = PTR_ERR(clk);
-		if (err_print)
-			dev_err(dev, "failed to get %s err %d", name, err);
-	} else {
-		*clk_out = clk;
-	}
-
-	return err;
-}
-
-static int ufs_qcom_phy_clk_get(struct device *dev,
-			 const char *name, struct clk **clk_out)
-{
-	return __ufs_qcom_phy_clk_get(dev, name, clk_out, true);
-}
-
-int ufs_qcom_phy_init_clks(struct ufs_qcom_phy *phy_common)
-{
-	int err;
-
-	if (of_device_is_compatible(phy_common->dev->of_node,
-				"qcom,msm8996-ufs-phy-qmp-14nm"))
-		goto skip_txrx_clk;
-
-	err = ufs_qcom_phy_clk_get(phy_common->dev, "tx_iface_clk",
-				   &phy_common->tx_iface_clk);
-	if (err)
-		goto out;
-
-	err = ufs_qcom_phy_clk_get(phy_common->dev, "rx_iface_clk",
-				   &phy_common->rx_iface_clk);
-	if (err)
-		goto out;
-
-skip_txrx_clk:
-	err = ufs_qcom_phy_clk_get(phy_common->dev, "ref_clk_src",
-				   &phy_common->ref_clk_src);
-	if (err)
-		goto out;
-
-	/*
-	 * "ref_clk_parent" is optional hence don't abort init if it's not
-	 * found.
-	 */
-	__ufs_qcom_phy_clk_get(phy_common->dev, "ref_clk_parent",
-				   &phy_common->ref_clk_parent, false);
-
-	err = ufs_qcom_phy_clk_get(phy_common->dev, "ref_clk",
-				   &phy_common->ref_clk);
-
-out:
-	return err;
-}
-EXPORT_SYMBOL_GPL(ufs_qcom_phy_init_clks);
-
-static int ufs_qcom_phy_init_vreg(struct device *dev,
-				  struct ufs_qcom_phy_vreg *vreg,
-				  const char *name)
-{
-	int err = 0;
-
-	char prop_name[MAX_PROP_NAME];
-
-	vreg->name = name;
-	vreg->reg = devm_regulator_get(dev, name);
-	if (IS_ERR(vreg->reg)) {
-		err = PTR_ERR(vreg->reg);
-		dev_err(dev, "failed to get %s, %d\n", name, err);
-		goto out;
-	}
-
-	if (dev->of_node) {
-		snprintf(prop_name, MAX_PROP_NAME, "%s-max-microamp", name);
-		err = of_property_read_u32(dev->of_node,
-					prop_name, &vreg->max_uA);
-		if (err && err != -EINVAL) {
-			dev_err(dev, "%s: failed to read %s\n",
-					__func__, prop_name);
-			goto out;
-		} else if (err == -EINVAL || !vreg->max_uA) {
-			if (regulator_count_voltages(vreg->reg) > 0) {
-				dev_err(dev, "%s: %s is mandatory\n",
-						__func__, prop_name);
-				goto out;
-			}
-			err = 0;
-		}
-	}
-
-	if (!strcmp(name, "vdda-pll")) {
-		vreg->max_uV = VDDA_PLL_MAX_UV;
-		vreg->min_uV = VDDA_PLL_MIN_UV;
-	} else if (!strcmp(name, "vdda-phy")) {
-		vreg->max_uV = VDDA_PHY_MAX_UV;
-		vreg->min_uV = VDDA_PHY_MIN_UV;
-	} else if (!strcmp(name, "vddp-ref-clk")) {
-		vreg->max_uV = VDDP_REF_CLK_MAX_UV;
-		vreg->min_uV = VDDP_REF_CLK_MIN_UV;
-	}
-
-out:
-	return err;
-}
-
-int ufs_qcom_phy_init_vregulators(struct ufs_qcom_phy *phy_common)
-{
-	int err;
-
-	err = ufs_qcom_phy_init_vreg(phy_common->dev, &phy_common->vdda_pll,
-		"vdda-pll");
-	if (err)
-		goto out;
-
-	err = ufs_qcom_phy_init_vreg(phy_common->dev, &phy_common->vdda_phy,
-		"vdda-phy");
-
-	if (err)
-		goto out;
-
-	err = ufs_qcom_phy_init_vreg(phy_common->dev, &phy_common->vddp_ref_clk,
-				     "vddp-ref-clk");
-
-out:
-	return err;
-}
-EXPORT_SYMBOL_GPL(ufs_qcom_phy_init_vregulators);
-
-static int ufs_qcom_phy_cfg_vreg(struct device *dev,
-			  struct ufs_qcom_phy_vreg *vreg, bool on)
-{
-	int ret = 0;
-	struct regulator *reg = vreg->reg;
-	const char *name = vreg->name;
-	int min_uV;
-	int uA_load;
-
-	if (regulator_count_voltages(reg) > 0) {
-		min_uV = on ? vreg->min_uV : 0;
-		ret = regulator_set_voltage(reg, min_uV, vreg->max_uV);
-		if (ret) {
-			dev_err(dev, "%s: %s set voltage failed, err=%d\n",
-					__func__, name, ret);
-			goto out;
-		}
-		uA_load = on ? vreg->max_uA : 0;
-		ret = regulator_set_load(reg, uA_load);
-		if (ret >= 0) {
-			/*
-			 * regulator_set_load() returns new regulator
-			 * mode upon success.
-			 */
-			ret = 0;
-		} else {
-			dev_err(dev, "%s: %s set optimum mode(uA_load=%d) failed, err=%d\n",
-					__func__, name, uA_load, ret);
-			goto out;
-		}
-	}
-out:
-	return ret;
-}
-
-static int ufs_qcom_phy_enable_vreg(struct device *dev,
-			     struct ufs_qcom_phy_vreg *vreg)
-{
-	int ret = 0;
-
-	if (!vreg || vreg->enabled)
-		goto out;
-
-	ret = ufs_qcom_phy_cfg_vreg(dev, vreg, true);
-	if (ret) {
-		dev_err(dev, "%s: ufs_qcom_phy_cfg_vreg() failed, err=%d\n",
-			__func__, ret);
-		goto out;
-	}
-
-	ret = regulator_enable(vreg->reg);
-	if (ret) {
-		dev_err(dev, "%s: enable failed, err=%d\n",
-				__func__, ret);
-		goto out;
-	}
-
-	vreg->enabled = true;
-out:
-	return ret;
-}
-
-static int ufs_qcom_phy_enable_ref_clk(struct ufs_qcom_phy *phy)
-{
-	int ret = 0;
-
-	if (phy->is_ref_clk_enabled)
-		goto out;
-
-	/*
-	 * reference clock is propagated in a daisy-chained manner from
-	 * source to phy, so ungate them at each stage.
-	 */
-	ret = clk_prepare_enable(phy->ref_clk_src);
-	if (ret) {
-		dev_err(phy->dev, "%s: ref_clk_src enable failed %d\n",
-				__func__, ret);
-		goto out;
-	}
-
-	/*
-	 * "ref_clk_parent" is optional clock hence make sure that clk reference
-	 * is available before trying to enable the clock.
-	 */
-	if (phy->ref_clk_parent) {
-		ret = clk_prepare_enable(phy->ref_clk_parent);
-		if (ret) {
-			dev_err(phy->dev, "%s: ref_clk_parent enable failed %d\n",
-					__func__, ret);
-			goto out_disable_src;
-		}
-	}
-
-	ret = clk_prepare_enable(phy->ref_clk);
-	if (ret) {
-		dev_err(phy->dev, "%s: ref_clk enable failed %d\n",
-				__func__, ret);
-		goto out_disable_parent;
-	}
-
-	phy->is_ref_clk_enabled = true;
-	goto out;
-
-out_disable_parent:
-	if (phy->ref_clk_parent)
-		clk_disable_unprepare(phy->ref_clk_parent);
-out_disable_src:
-	clk_disable_unprepare(phy->ref_clk_src);
-out:
-	return ret;
-}
-
-static int ufs_qcom_phy_disable_vreg(struct device *dev,
-			      struct ufs_qcom_phy_vreg *vreg)
-{
-	int ret = 0;
-
-	if (!vreg || !vreg->enabled)
-		goto out;
-
-	ret = regulator_disable(vreg->reg);
-
-	if (!ret) {
-		/* ignore errors on applying disable config */
-		ufs_qcom_phy_cfg_vreg(dev, vreg, false);
-		vreg->enabled = false;
-	} else {
-		dev_err(dev, "%s: %s disable failed, err=%d\n",
-				__func__, vreg->name, ret);
-	}
-out:
-	return ret;
-}
-
-static void ufs_qcom_phy_disable_ref_clk(struct ufs_qcom_phy *phy)
-{
-	if (phy->is_ref_clk_enabled) {
-		clk_disable_unprepare(phy->ref_clk);
-		/*
-		 * "ref_clk_parent" is optional clock hence make sure that clk
-		 * reference is available before trying to disable the clock.
-		 */
-		if (phy->ref_clk_parent)
-			clk_disable_unprepare(phy->ref_clk_parent);
-		clk_disable_unprepare(phy->ref_clk_src);
-		phy->is_ref_clk_enabled = false;
-	}
-}
-
-/* Turn ON M-PHY RMMI interface clocks */
-static int ufs_qcom_phy_enable_iface_clk(struct ufs_qcom_phy *phy)
-{
-	int ret = 0;
-
-	if (phy->is_iface_clk_enabled)
-		goto out;
-
-	ret = clk_prepare_enable(phy->tx_iface_clk);
-	if (ret) {
-		dev_err(phy->dev, "%s: tx_iface_clk enable failed %d\n",
-				__func__, ret);
-		goto out;
-	}
-	ret = clk_prepare_enable(phy->rx_iface_clk);
-	if (ret) {
-		clk_disable_unprepare(phy->tx_iface_clk);
-		dev_err(phy->dev, "%s: rx_iface_clk enable failed %d. disabling also tx_iface_clk\n",
-				__func__, ret);
-		goto out;
-	}
-	phy->is_iface_clk_enabled = true;
-
-out:
-	return ret;
-}
-
-/* Turn OFF M-PHY RMMI interface clocks */
-static void ufs_qcom_phy_disable_iface_clk(struct ufs_qcom_phy *phy)
-{
-	if (phy->is_iface_clk_enabled) {
-		clk_disable_unprepare(phy->tx_iface_clk);
-		clk_disable_unprepare(phy->rx_iface_clk);
-		phy->is_iface_clk_enabled = false;
-	}
-}
-
-static int ufs_qcom_phy_start_serdes(struct ufs_qcom_phy *ufs_qcom_phy)
-{
-	int ret = 0;
-
-	if (!ufs_qcom_phy->phy_spec_ops->start_serdes) {
-		dev_err(ufs_qcom_phy->dev, "%s: start_serdes() callback is not supported\n",
-			__func__);
-		ret = -ENOTSUPP;
-	} else {
-		ufs_qcom_phy->phy_spec_ops->start_serdes(ufs_qcom_phy);
-	}
-
-	return ret;
-}
-
-int ufs_qcom_phy_set_tx_lane_enable(struct phy *generic_phy, u32 tx_lanes)
-{
-	struct ufs_qcom_phy *ufs_qcom_phy = get_ufs_qcom_phy(generic_phy);
-	int ret = 0;
-
-	if (!ufs_qcom_phy->phy_spec_ops->set_tx_lane_enable) {
-		dev_err(ufs_qcom_phy->dev, "%s: set_tx_lane_enable() callback is not supported\n",
-			__func__);
-		ret = -ENOTSUPP;
-	} else {
-		ufs_qcom_phy->phy_spec_ops->set_tx_lane_enable(ufs_qcom_phy,
-							       tx_lanes);
-	}
-
-	return ret;
-}
-EXPORT_SYMBOL_GPL(ufs_qcom_phy_set_tx_lane_enable);
-
-void ufs_qcom_phy_save_controller_version(struct phy *generic_phy,
-					  u8 major, u16 minor, u16 step)
-{
-	struct ufs_qcom_phy *ufs_qcom_phy = get_ufs_qcom_phy(generic_phy);
-
-	ufs_qcom_phy->host_ctrl_rev_major = major;
-	ufs_qcom_phy->host_ctrl_rev_minor = minor;
-	ufs_qcom_phy->host_ctrl_rev_step = step;
-}
-EXPORT_SYMBOL_GPL(ufs_qcom_phy_save_controller_version);
-
-static int ufs_qcom_phy_is_pcs_ready(struct ufs_qcom_phy *ufs_qcom_phy)
-{
-	if (!ufs_qcom_phy->phy_spec_ops->is_physical_coding_sublayer_ready) {
-		dev_err(ufs_qcom_phy->dev, "%s: is_physical_coding_sublayer_ready() callback is not supported\n",
-			__func__);
-		return -ENOTSUPP;
-	}
-
-	return ufs_qcom_phy->phy_spec_ops->
-			is_physical_coding_sublayer_ready(ufs_qcom_phy);
-}
-
-int ufs_qcom_phy_power_on(struct phy *generic_phy)
-{
-	struct ufs_qcom_phy *phy_common = get_ufs_qcom_phy(generic_phy);
-	struct device *dev = phy_common->dev;
-	bool is_rate_B = false;
-	int err;
-
-	err = ufs_qcom_phy_get_reset(phy_common);
-	if (err)
-		return err;
-
-	err = reset_control_assert(phy_common->ufs_reset);
-	if (err)
-		return err;
-
-	if (phy_common->mode == PHY_MODE_UFS_HS_B)
-		is_rate_B = true;
-
-	err = phy_common->phy_spec_ops->calibrate(phy_common, is_rate_B);
-	if (err)
-		return err;
-
-	err = reset_control_deassert(phy_common->ufs_reset);
-	if (err) {
-		dev_err(dev, "Failed to assert UFS PHY reset");
-		return err;
-	}
-
-	err = ufs_qcom_phy_start_serdes(phy_common);
-	if (err)
-		return err;
-
-	err = ufs_qcom_phy_is_pcs_ready(phy_common);
-	if (err)
-		return err;
-
-	err = ufs_qcom_phy_enable_vreg(dev, &phy_common->vdda_phy);
-	if (err) {
-		dev_err(dev, "%s enable vdda_phy failed, err=%d\n",
-			__func__, err);
-		goto out;
-	}
-
-	phy_common->phy_spec_ops->power_control(phy_common, true);
-
-	/* vdda_pll also enables ref clock LDOs so enable it first */
-	err = ufs_qcom_phy_enable_vreg(dev, &phy_common->vdda_pll);
-	if (err) {
-		dev_err(dev, "%s enable vdda_pll failed, err=%d\n",
-			__func__, err);
-		goto out_disable_phy;
-	}
-
-	err = ufs_qcom_phy_enable_iface_clk(phy_common);
-	if (err) {
-		dev_err(dev, "%s enable phy iface clock failed, err=%d\n",
-			__func__, err);
-		goto out_disable_pll;
-	}
-
-	err = ufs_qcom_phy_enable_ref_clk(phy_common);
-	if (err) {
-		dev_err(dev, "%s enable phy ref clock failed, err=%d\n",
-			__func__, err);
-		goto out_disable_iface_clk;
-	}
-
-	/* enable device PHY ref_clk pad rail */
-	if (phy_common->vddp_ref_clk.reg) {
-		err = ufs_qcom_phy_enable_vreg(dev,
-					       &phy_common->vddp_ref_clk);
-		if (err) {
-			dev_err(dev, "%s enable vddp_ref_clk failed, err=%d\n",
-				__func__, err);
-			goto out_disable_ref_clk;
-		}
-	}
-
-	goto out;
-
-out_disable_ref_clk:
-	ufs_qcom_phy_disable_ref_clk(phy_common);
-out_disable_iface_clk:
-	ufs_qcom_phy_disable_iface_clk(phy_common);
-out_disable_pll:
-	ufs_qcom_phy_disable_vreg(dev, &phy_common->vdda_pll);
-out_disable_phy:
-	ufs_qcom_phy_disable_vreg(dev, &phy_common->vdda_phy);
-out:
-	return err;
-}
-EXPORT_SYMBOL_GPL(ufs_qcom_phy_power_on);
-
-int ufs_qcom_phy_power_off(struct phy *generic_phy)
-{
-	struct ufs_qcom_phy *phy_common = get_ufs_qcom_phy(generic_phy);
-
-	phy_common->phy_spec_ops->power_control(phy_common, false);
-
-	if (phy_common->vddp_ref_clk.reg)
-		ufs_qcom_phy_disable_vreg(phy_common->dev,
-					  &phy_common->vddp_ref_clk);
-	ufs_qcom_phy_disable_ref_clk(phy_common);
-	ufs_qcom_phy_disable_iface_clk(phy_common);
-
-	ufs_qcom_phy_disable_vreg(phy_common->dev, &phy_common->vdda_pll);
-	ufs_qcom_phy_disable_vreg(phy_common->dev, &phy_common->vdda_phy);
-	reset_control_assert(phy_common->ufs_reset);
-	return 0;
-}
-EXPORT_SYMBOL_GPL(ufs_qcom_phy_power_off);
-
-MODULE_AUTHOR("Yaniv Gardi <ygardi@codeaurora.org>");
-MODULE_AUTHOR("Vivek Gautam <vivek.gautam@codeaurora.org>");
-MODULE_DESCRIPTION("Universal Flash Storage (UFS) QCOM PHY");
-MODULE_LICENSE("GPL v2");