1 // SPDX-License-Identifier: GPL-2.0
3  * Platform UFS Host driver for Cadence controller
18 #include "ufshcd-pltfrm.h"
26 	 * cdns_ufs_dme_attr_val - for storing L4 attributes
32  * cdns_ufs_get_l4_attr - get L4 attributes on local side
41 		       &host->cdns_ufs_dme_attr_val[0]);  in cdns_ufs_get_l4_attr()
43 		       &host->cdns_ufs_dme_attr_val[1]);  in cdns_ufs_get_l4_attr()
45 		       &host->cdns_ufs_dme_attr_val[2]);  in cdns_ufs_get_l4_attr()
47 		       &host->cdns_ufs_dme_attr_val[3]);  in cdns_ufs_get_l4_attr()
49 		       &host->cdns_ufs_dme_attr_val[4]);  in cdns_ufs_get_l4_attr()
51 		       &host->cdns_ufs_dme_attr_val[5]);  in cdns_ufs_get_l4_attr()
53 		       &host->cdns_ufs_dme_attr_val[6]);  in cdns_ufs_get_l4_attr()
55 		       &host->cdns_ufs_dme_attr_val[7]);  in cdns_ufs_get_l4_attr()
57 		       &host->cdns_ufs_dme_attr_val[8]);  in cdns_ufs_get_l4_attr()
59 		       &host->cdns_ufs_dme_attr_val[9]);  in cdns_ufs_get_l4_attr()
61 		       &host->cdns_ufs_dme_attr_val[10]);  in cdns_ufs_get_l4_attr()
63 		       &host->cdns_ufs_dme_attr_val[11]);  in cdns_ufs_get_l4_attr()
67  * cdns_ufs_set_l4_attr - set L4 attributes on local side
77 		       host->cdns_ufs_dme_attr_val[0]);  in cdns_ufs_set_l4_attr()
79 		       host->cdns_ufs_dme_attr_val[1]);  in cdns_ufs_set_l4_attr()
81 		       host->cdns_ufs_dme_attr_val[2]);  in cdns_ufs_set_l4_attr()
83 		       host->cdns_ufs_dme_attr_val[3]);  in cdns_ufs_set_l4_attr()
85 		       host->cdns_ufs_dme_attr_val[4]);  in cdns_ufs_set_l4_attr()
87 		       host->cdns_ufs_dme_attr_val[5]);  in cdns_ufs_set_l4_attr()
89 		       host->cdns_ufs_dme_attr_val[6]);  in cdns_ufs_set_l4_attr()
91 		       host->cdns_ufs_dme_attr_val[7]);  in cdns_ufs_set_l4_attr()
93 		       host->cdns_ufs_dme_attr_val[8]);  in cdns_ufs_set_l4_attr()
95 		       host->cdns_ufs_dme_attr_val[9]);  in cdns_ufs_set_l4_attr()
97 		       host->cdns_ufs_dme_attr_val[10]);  in cdns_ufs_set_l4_attr()
99 		       host->cdns_ufs_dme_attr_val[11]);  in cdns_ufs_set_l4_attr()
106  * Return zero for success and non-zero for failure
111 	struct list_head *head = &hba->clk_list_head;  in cdns_ufs_set_hclkdiv()
119 		if (IS_ERR_OR_NULL(clki->clk))  in cdns_ufs_set_hclkdiv()
121 		if (!strcmp(clki->name, "core_clk"))  in cdns_ufs_set_hclkdiv()
122 			core_clk_rate = clk_get_rate(clki->clk);  in cdns_ufs_set_hclkdiv()
126 		dev_err(hba->dev, "%s: unable to find core_clk rate\n",  in cdns_ufs_set_hclkdiv()
128 		return -EINVAL;  in cdns_ufs_set_hclkdiv()
148  * Return zero for success and non-zero for failure
180  * Return zero for success and non-zero for failure
189 	 * Some UFS devices have issues if LCC is enabled.  in cdns_ufs_link_startup_notify()
198 	 * Disabling Autohibern8 feature in cadence UFS  in cdns_ufs_link_startup_notify()
201 	hba->ahit = 0;  in cdns_ufs_link_startup_notify()
207  * cdns_ufs_init - performs additional ufs initialization
216 	struct device *dev = hba->dev;  in cdns_ufs_init()
221 		return -ENOMEM;  in cdns_ufs_init()
224 	if (hba->vops && hba->vops->phy_initialization)  in cdns_ufs_init()
225 		status = hba->vops->phy_initialization(hba);  in cdns_ufs_init()
231  * cdns_ufs_m31_16nm_phy_initialization - performs m31 phy initialization
249 	.name = "cdns-ufs-pltfm",
257 	.name = "cdns-ufs-pltfm",
271 		.compatible = "cdns,ufshc-m31-16nm",
280  * cdns_ufs_pltfrm_probe - probe routine of the driver
283  * Return zero for success and non-zero for failure
290 	struct device *dev = &pdev->dev;  in cdns_ufs_pltfrm_probe()
292 	of_id = of_match_node(cdns_ufs_of_match, dev->of_node);  in cdns_ufs_pltfrm_probe()
293 	vops = (struct ufs_hba_variant_ops *)of_id->data;  in cdns_ufs_pltfrm_probe()
304  * cdns_ufs_pltfrm_remove - removes the ufs driver
330 		.name   = "cdns-ufshcd",
339 MODULE_DESCRIPTION("Cadence UFS host controller platform driver");