1#
2# Kernel configuration file for the UFS Host Controller
3#
4# This code is based on drivers/scsi/ufs/Kconfig
5# Copyright (C) 2011-2013 Samsung India Software Operations
6#
7# Authors:
8#	Santosh Yaraganavi <santosh.sy@samsung.com>
9#	Vinayak Holikatti <h.vinayak@samsung.com>
10#
11# This program is free software; you can redistribute it and/or
12# modify it under the terms of the GNU General Public License
13# as published by the Free Software Foundation; either version 2
14# of the License, or (at your option) any later version.
15# See the COPYING file in the top-level directory or visit
16# <http://www.gnu.org/licenses/gpl-2.0.html>
17#
18# This program is distributed in the hope that it will be useful,
19# but WITHOUT ANY WARRANTY; without even the implied warranty of
20# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
21# GNU General Public License for more details.
22#
23# This program is provided "AS IS" and "WITH ALL FAULTS" and
24# without warranty of any kind. You are solely responsible for
25# determining the appropriateness of using and distributing
26# the program and assume all risks associated with your exercise
27# of rights with respect to the program, including but not limited
28# to infringement of third party rights, the risks and costs of
29# program errors, damage to or loss of data, programs or equipment,
30# and unavailability or interruption of operations. Under no
31# circumstances will the contributor of this Program be liable for
32# any damages of any kind arising from your use or distribution of
33# this program.
34
35config SCSI_UFSHCD
36	tristate "Universal Flash Storage Controller Driver Core"
37	depends on SCSI && SCSI_DMA
38	select PM_DEVFREQ
39	select DEVFREQ_GOV_SIMPLE_ONDEMAND
40	---help---
41	This selects the support for UFS devices in Linux, say Y and make
42	  sure that you know the name of your UFS host adapter (the card
43	  inside your computer that "speaks" the UFS protocol, also
44	  called UFS Host Controller), because you will be asked for it.
45	  The module will be called ufshcd.
46
47	  To compile this driver as a module, choose M here and read
48	  <file:Documentation/scsi/ufs.txt>.
49	  However, do not compile this as a module if your root file system
50	  (the one containing the directory /) is located on a UFS device.
51
52config SCSI_UFSHCD_PCI
53	tristate "PCI bus based UFS Controller support"
54	depends on SCSI_UFSHCD && PCI
55	---help---
56	This selects the PCI UFS Host Controller Interface. Select this if
57	you have UFS Host Controller with PCI Interface.
58
59	  If you have a controller with this interface, say Y or M here.
60
61	  If unsure, say N.
62
63config SCSI_UFSHCD_PLATFORM
64	tristate "Platform bus based UFS Controller support"
65	depends on SCSI_UFSHCD
66	---help---
67	This selects the UFS host controller support. Select this if
68	you have an UFS controller on Platform bus.
69
70	If you have a controller with this interface, say Y or M here.
71
72	  If unsure, say N.
73
74config SCSI_UFS_QCOM
75	bool "QCOM specific hooks to UFS controller platform driver"
76	depends on SCSI_UFSHCD_PLATFORM && ARCH_MSM
77	select PHY_QCOM_UFS
78	help
79	  This selects the QCOM specific additions to UFSHCD platform driver.
80	  UFS host on QCOM needs some vendor specific configuration before
81	  accessing the hardware which includes PHY configuration and vendor
82	  specific registers.
83
84	  Select this if you have UFS controller on QCOM chipset.
85	  If unsure, say N.
86