1 files changed, 0 insertions, 456 deletions
diff --git a/drivers/scsi/ufs/ufshcd-pltfrm.c b/drivers/scsi/ufs/ufshcd-pltfrm.c
deleted file mode 100644
index 76f9be71c31b..000000000000
--- a/drivers/scsi/ufs/ufshcd-pltfrm.c
+++ /dev/null
@@ -1,456 +0,0 @@
-/*
- * Universal Flash Storage Host controller Platform bus based glue driver
- *
- * This code is based on drivers/scsi/ufs/ufshcd-pltfrm.c
- * Copyright (C) 2011-2013 Samsung India Software Operations
- *
- * Authors:
- *	Santosh Yaraganavi <santosh.sy@samsung.com>
- *	Vinayak Holikatti <h.vinayak@samsung.com>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- * See the COPYING file in the top-level directory or visit
- * <http://www.gnu.org/licenses/gpl-2.0.html>
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * This program is provided "AS IS" and "WITH ALL FAULTS" and
- * without warranty of any kind. You are solely responsible for
- * determining the appropriateness of using and distributing
- * the program and assume all risks associated with your exercise
- * of rights with respect to the program, including but not limited
- * to infringement of third party rights, the risks and costs of
- * program errors, damage to or loss of data, programs or equipment,
- * and unavailability or interruption of operations. Under no
- * circumstances will the contributor of this Program be liable for
- * any damages of any kind arising from your use or distribution of
- * this program.
- */
-
-#include <linux/platform_device.h>
-#include <linux/pm_runtime.h>
-#include <linux/of.h>
-
-#include "ufshcd.h"
-#include "ufshcd-pltfrm.h"
-#include "unipro.h"
-
-#define UFSHCD_DEFAULT_LANES_PER_DIRECTION		2
-
-static int ufshcd_parse_clock_info(struct ufs_hba *hba)
-{
-	int ret = 0;
-	int cnt;
-	int i;
-	struct device *dev = hba->dev;
-	struct device_node *np = dev->of_node;
-	char *name;
-	u32 *clkfreq = NULL;
-	struct ufs_clk_info *clki;
-	int len = 0;
-	size_t sz = 0;
-
-	if (!np)
-		goto out;
-
-	cnt = of_property_count_strings(np, "clock-names");
-	if (!cnt || (cnt == -EINVAL)) {
-		dev_info(dev, "%s: Unable to find clocks, assuming enabled\n",
-				__func__);
-	} else if (cnt < 0) {
-		dev_err(dev, "%s: count clock strings failed, err %d\n",
-				__func__, cnt);
-		ret = cnt;
-	}
-
-	if (cnt <= 0)
-		goto out;
-
-	if (!of_get_property(np, "freq-table-hz", &len)) {
-		dev_info(dev, "freq-table-hz property not specified\n");
-		goto out;
-	}
-
-	if (len <= 0)
-		goto out;
-
-	sz = len / sizeof(*clkfreq);
-	if (sz != 2 * cnt) {
-		dev_err(dev, "%s len mismatch\n", "freq-table-hz");
-		ret = -EINVAL;
-		goto out;
-	}
-
-	clkfreq = devm_kcalloc(dev, sz, sizeof(*clkfreq),
-			       GFP_KERNEL);
-	if (!clkfreq) {
-		ret = -ENOMEM;
-		goto out;
-	}
-
-	ret = of_property_read_u32_array(np, "freq-table-hz",
-			clkfreq, sz);
-	if (ret && (ret != -EINVAL)) {
-		dev_err(dev, "%s: error reading array %d\n",
-				"freq-table-hz", ret);
-		return ret;
-	}
-
-	for (i = 0; i < sz; i += 2) {
-		ret = of_property_read_string_index(np,
-				"clock-names", i/2, (const char **)&name);
-		if (ret)
-			goto out;
-
-		clki = devm_kzalloc(dev, sizeof(*clki), GFP_KERNEL);
-		if (!clki) {
-			ret = -ENOMEM;
-			goto out;
-		}
-
-		clki->min_freq = clkfreq[i];
-		clki->max_freq = clkfreq[i+1];
-		clki->name = kstrdup(name, GFP_KERNEL);
-		dev_dbg(dev, "%s: min %u max %u name %s\n", "freq-table-hz",
-				clki->min_freq, clki->max_freq, clki->name);
-		list_add_tail(&clki->list, &hba->clk_list_head);
-	}
-out:
-	return ret;
-}
-
-#define MAX_PROP_SIZE 32
-static int ufshcd_populate_vreg(struct device *dev, const char *name,
-		struct ufs_vreg **out_vreg)
-{
-	int ret = 0;
-	char prop_name[MAX_PROP_SIZE];
-	struct ufs_vreg *vreg = NULL;
-	struct device_node *np = dev->of_node;
-
-	if (!np) {
-		dev_err(dev, "%s: non DT initialization\n", __func__);
-		goto out;
-	}
-
-	snprintf(prop_name, MAX_PROP_SIZE, "%s-supply", name);
-	if (!of_parse_phandle(np, prop_name, 0)) {
-		dev_info(dev, "%s: Unable to find %s regulator, assuming enabled\n",
-				__func__, prop_name);
-		goto out;
-	}
-
-	vreg = devm_kzalloc(dev, sizeof(*vreg), GFP_KERNEL);
-	if (!vreg)
-		return -ENOMEM;
-
-	vreg->name = kstrdup(name, GFP_KERNEL);
-
-	snprintf(prop_name, MAX_PROP_SIZE, "%s-max-microamp", name);
-	if (of_property_read_u32(np, prop_name, &vreg->max_uA)) {
-		dev_info(dev, "%s: unable to find %s\n", __func__, prop_name);
-		vreg->max_uA = 0;
-	}
-
-	if (!strcmp(name, "vcc")) {
-		if (of_property_read_bool(np, "vcc-supply-1p8")) {
-			vreg->min_uV = UFS_VREG_VCC_1P8_MIN_UV;
-			vreg->max_uV = UFS_VREG_VCC_1P8_MAX_UV;
-		} else {
-			vreg->min_uV = UFS_VREG_VCC_MIN_UV;
-			vreg->max_uV = UFS_VREG_VCC_MAX_UV;
-		}
-	} else if (!strcmp(name, "vccq")) {
-		vreg->min_uV = UFS_VREG_VCCQ_MIN_UV;
-		vreg->max_uV = UFS_VREG_VCCQ_MAX_UV;
-	} else if (!strcmp(name, "vccq2")) {
-		vreg->min_uV = UFS_VREG_VCCQ2_MIN_UV;
-		vreg->max_uV = UFS_VREG_VCCQ2_MAX_UV;
-	}
-
-	goto out;
-
-out:
-	if (!ret)
-		*out_vreg = vreg;
-	return ret;
-}
-
-/**
- * ufshcd_parse_regulator_info - get regulator info from device tree
- * @hba: per adapter instance
- *
- * Get regulator info from device tree for vcc, vccq, vccq2 power supplies.
- * If any of the supplies are not defined it is assumed that they are always-on
- * and hence return zero. If the property is defined but parsing is failed
- * then return corresponding error.
- */
-static int ufshcd_parse_regulator_info(struct ufs_hba *hba)
-{
-	int err;
-	struct device *dev = hba->dev;
-	struct ufs_vreg_info *info = &hba->vreg_info;
-
-	err = ufshcd_populate_vreg(dev, "vdd-hba", &info->vdd_hba);
-	if (err)
-		goto out;
-
-	err = ufshcd_populate_vreg(dev, "vcc", &info->vcc);
-	if (err)
-		goto out;
-
-	err = ufshcd_populate_vreg(dev, "vccq", &info->vccq);
-	if (err)
-		goto out;
-
-	err = ufshcd_populate_vreg(dev, "vccq2", &info->vccq2);
-out:
-	return err;
-}
-
-#ifdef CONFIG_PM
-/**
- * ufshcd_pltfrm_suspend - suspend power management function
- * @dev: pointer to device handle
- *
- * Returns 0 if successful
- * Returns non-zero otherwise
- */
-int ufshcd_pltfrm_suspend(struct device *dev)
-{
-	return ufshcd_system_suspend(dev_get_drvdata(dev));
-}
-EXPORT_SYMBOL_GPL(ufshcd_pltfrm_suspend);
-
-/**
- * ufshcd_pltfrm_resume - resume power management function
- * @dev: pointer to device handle
- *
- * Returns 0 if successful
- * Returns non-zero otherwise
- */
-int ufshcd_pltfrm_resume(struct device *dev)
-{
-	return ufshcd_system_resume(dev_get_drvdata(dev));
-}
-EXPORT_SYMBOL_GPL(ufshcd_pltfrm_resume);
-
-int ufshcd_pltfrm_runtime_suspend(struct device *dev)
-{
-	return ufshcd_runtime_suspend(dev_get_drvdata(dev));
-}
-EXPORT_SYMBOL_GPL(ufshcd_pltfrm_runtime_suspend);
-
-int ufshcd_pltfrm_runtime_resume(struct device *dev)
-{
-	return ufshcd_runtime_resume(dev_get_drvdata(dev));
-}
-EXPORT_SYMBOL_GPL(ufshcd_pltfrm_runtime_resume);
-
-int ufshcd_pltfrm_runtime_idle(struct device *dev)
-{
-	return ufshcd_runtime_idle(dev_get_drvdata(dev));
-}
-EXPORT_SYMBOL_GPL(ufshcd_pltfrm_runtime_idle);
-
-#endif /* CONFIG_PM */
-
-void ufshcd_pltfrm_shutdown(struct platform_device *pdev)
-{
-	ufshcd_shutdown((struct ufs_hba *)platform_get_drvdata(pdev));
-}
-EXPORT_SYMBOL_GPL(ufshcd_pltfrm_shutdown);
-
-static void ufshcd_init_lanes_per_dir(struct ufs_hba *hba)
-{
-	struct device *dev = hba->dev;
-	int ret;
-
-	ret = of_property_read_u32(dev->of_node, "lanes-per-direction",
-		&hba->lanes_per_direction);
-	if (ret) {
-		dev_dbg(hba->dev,
-			"%s: failed to read lanes-per-direction, ret=%d\n",
-			__func__, ret);
-		hba->lanes_per_direction = UFSHCD_DEFAULT_LANES_PER_DIRECTION;
-	}
-}
-
-/**
- * ufshcd_get_pwr_dev_param - get finally agreed attributes for
- *                            power mode change
- * @pltfrm_param: pointer to platform parameters
- * @dev_max: pointer to device attributes
- * @agreed_pwr: returned agreed attributes
- *
- * Returns 0 on success, non-zero value on failure
- */
-int ufshcd_get_pwr_dev_param(struct ufs_dev_params *pltfrm_param,
-			     struct ufs_pa_layer_attr *dev_max,
-			     struct ufs_pa_layer_attr *agreed_pwr)
-{
-	int min_pltfrm_gear;
-	int min_dev_gear;
-	bool is_dev_sup_hs = false;
-	bool is_pltfrm_max_hs = false;
-
-	if (dev_max->pwr_rx == FAST_MODE)
-		is_dev_sup_hs = true;
-
-	if (pltfrm_param->desired_working_mode == UFS_HS_MODE) {
-		is_pltfrm_max_hs = true;
-		min_pltfrm_gear = min_t(u32, pltfrm_param->hs_rx_gear,
-					pltfrm_param->hs_tx_gear);
-	} else {
-		min_pltfrm_gear = min_t(u32, pltfrm_param->pwm_rx_gear,
-					pltfrm_param->pwm_tx_gear);
-	}
-
-	/*
-	 * device doesn't support HS but
-	 * pltfrm_param->desired_working_mode is HS,
-	 * thus device and pltfrm_param don't agree
-	 */
-	if (!is_dev_sup_hs && is_pltfrm_max_hs) {
-		pr_info("%s: device doesn't support HS\n",
-			__func__);
-		return -ENOTSUPP;
-	} else if (is_dev_sup_hs && is_pltfrm_max_hs) {
-		/*
-		 * since device supports HS, it supports FAST_MODE.
-		 * since pltfrm_param->desired_working_mode is also HS
-		 * then final decision (FAST/FASTAUTO) is done according
-		 * to pltfrm_params as it is the restricting factor
-		 */
-		agreed_pwr->pwr_rx = pltfrm_param->rx_pwr_hs;
-		agreed_pwr->pwr_tx = agreed_pwr->pwr_rx;
-	} else {
-		/*
-		 * here pltfrm_param->desired_working_mode is PWM.
-		 * it doesn't matter whether device supports HS or PWM,
-		 * in both cases pltfrm_param->desired_working_mode will
-		 * determine the mode
-		 */
-		agreed_pwr->pwr_rx = pltfrm_param->rx_pwr_pwm;
-		agreed_pwr->pwr_tx = agreed_pwr->pwr_rx;
-	}
-
-	/*
-	 * we would like tx to work in the minimum number of lanes
-	 * between device capability and vendor preferences.
-	 * the same decision will be made for rx
-	 */
-	agreed_pwr->lane_tx = min_t(u32, dev_max->lane_tx,
-				    pltfrm_param->tx_lanes);
-	agreed_pwr->lane_rx = min_t(u32, dev_max->lane_rx,
-				    pltfrm_param->rx_lanes);
-
-	/* device maximum gear is the minimum between device rx and tx gears */
-	min_dev_gear = min_t(u32, dev_max->gear_rx, dev_max->gear_tx);
-
-	/*
-	 * if both device capabilities and vendor pre-defined preferences are
-	 * both HS or both PWM then set the minimum gear to be the chosen
-	 * working gear.
-	 * if one is PWM and one is HS then the one that is PWM get to decide
-	 * what is the gear, as it is the one that also decided previously what
-	 * pwr the device will be configured to.
-	 */
-	if ((is_dev_sup_hs && is_pltfrm_max_hs) ||
-	    (!is_dev_sup_hs && !is_pltfrm_max_hs)) {
-		agreed_pwr->gear_rx =
-			min_t(u32, min_dev_gear, min_pltfrm_gear);
-	} else if (!is_dev_sup_hs) {
-		agreed_pwr->gear_rx = min_dev_gear;
-	} else {
-		agreed_pwr->gear_rx = min_pltfrm_gear;
-	}
-	agreed_pwr->gear_tx = agreed_pwr->gear_rx;
-
-	agreed_pwr->hs_rate = pltfrm_param->hs_rate;
-
-	return 0;
-}
-EXPORT_SYMBOL_GPL(ufshcd_get_pwr_dev_param);
-
-/**
- * ufshcd_pltfrm_init - probe routine of the driver
- * @pdev: pointer to Platform device handle
- * @vops: pointer to variant ops
- *
- * Returns 0 on success, non-zero value on failure
- */
-int ufshcd_pltfrm_init(struct platform_device *pdev,
-		       const struct ufs_hba_variant_ops *vops)
-{
-	struct ufs_hba *hba;
-	void __iomem *mmio_base;
-	int irq, err;
-	struct device *dev = &pdev->dev;
-
-	mmio_base = devm_platform_ioremap_resource(pdev, 0);
-	if (IS_ERR(mmio_base)) {
-		err = PTR_ERR(mmio_base);
-		goto out;
-	}
-
-	irq = platform_get_irq(pdev, 0);
-	if (irq < 0) {
-		err = -ENODEV;
-		goto out;
-	}
-
-	err = ufshcd_alloc_host(dev, &hba);
-	if (err) {
-		dev_err(&pdev->dev, "Allocation failed\n");
-		goto out;
-	}
-
-	hba->vops = vops;
-
-	err = ufshcd_parse_clock_info(hba);
-	if (err) {
-		dev_err(&pdev->dev, "%s: clock parse failed %d\n",
-				__func__, err);
-		goto dealloc_host;
-	}
-	err = ufshcd_parse_regulator_info(hba);
-	if (err) {
-		dev_err(&pdev->dev, "%s: regulator init failed %d\n",
-				__func__, err);
-		goto dealloc_host;
-	}
-
-	ufshcd_init_lanes_per_dir(hba);
-
-	err = ufshcd_init(hba, mmio_base, irq);
-	if (err) {
-		dev_err(dev, "Initialization failed\n");
-		goto dealloc_host;
-	}
-
-	platform_set_drvdata(pdev, hba);
-
-	pm_runtime_set_active(&pdev->dev);
-	pm_runtime_enable(&pdev->dev);
-
-	return 0;
-
-dealloc_host:
-	ufshcd_dealloc_host(hba);
-out:
-	return err;
-}
-EXPORT_SYMBOL_GPL(ufshcd_pltfrm_init);
-
-MODULE_AUTHOR("Santosh Yaragnavi <santosh.sy@samsung.com>");
-MODULE_AUTHOR("Vinayak Holikatti <h.vinayak@samsung.com>");
-MODULE_DESCRIPTION("UFS host controller Platform bus based glue driver");
-MODULE_LICENSE("GPL");
-MODULE_VERSION(UFSHCD_DRIVER_VERSION);