target/linux/ipq806x/patches/0153-soc-qcom-tcsr-Add-TCSR-driver.patch

   1 From 0b469f3f4c0e6a0e0b1b60a059600e325a03b6f5 Mon Sep 17 00:00:00 2001
   2 From: Andy Gross <agross@codeaurora.org>
   3 Date: Thu, 12 Jun 2014 00:52:06 -0500
   4 Subject: [PATCH 153/182] soc: qcom: tcsr: Add TCSR driver
   5
   6 This patch adds support for the TCSR IP block present in Qualcomm processors.
   7
   8 Signed-off-by: Andy Gross <agross@codeaurora.org>
   9 ---
  10  .../devicetree/bindings/soc/qcom/qcom,tcsr.txt     |   25 ++++++++
  11  drivers/soc/qcom/Kconfig                           |    6 ++
  12  drivers/soc/qcom/Makefile                          |    1 +
  13  drivers/soc/qcom/qcom_tcsr.c                       |   64 ++++++++++++++++++++
  14  include/dt-bindings/soc/qcom,tcsr.h                |   19 ++++++
  15  5 files changed, 115 insertions(+)
  16  create mode 100644 Documentation/devicetree/bindings/soc/qcom/qcom,tcsr.txt
  17  create mode 100644 drivers/soc/qcom/qcom_tcsr.c
  18  create mode 100644 include/dt-bindings/soc/qcom,tcsr.h
  19
  20 diff --git a/Documentation/devicetree/bindings/soc/qcom/qcom,tcsr.txt b/Documentation/devicetree/bindings/soc/qcom/qcom,tcsr.txt
  21 new file mode 100644
  22 index 0000000..6ea74c1
  23 --- /dev/null
  24 +++ b/Documentation/devicetree/bindings/soc/qcom/qcom,tcsr.txt
  25 @@ -0,0 +1,25 @@
  26 +QCOM TCSR (Top Control and Status Register) Driver
  27 +
  28 +The TCSR provides miscellaneous control functions and status registers for
  29 +Qualcomm processors.
  30 +
  31 +Required properties:
  32 +- compatible: must contain "qcom,tcsr" for IPQ806x
  33 +- reg: Address range for TCSR registers
  34 +
  35 +Optional properties:
  36 +- qcom,usb-ctrl-select : indicates USB port type selection.  Please reference
  37 +  dt-bindings/soc/qcom,tcsr.h for valid USB port selection values.
  38 +
  39 +Example for IPQ8064:
  40 +
  41 +#include <dt-bindings/soc/qcom,tcsr.h>
  42 +
  43 +               tcsr: tcsr@1a400000 {
  44 +                       compatible = "qcom,tcsr";
  45 +                       reg = <0x1a400000 0x100>;
  46 +
  47 +                       qcom,usb-ctrl-select = <TCSR_USB_SELECT_USB3_DUAL>;
  48 +               };
  49 +
  50 +
  51 diff --git a/drivers/soc/qcom/Kconfig b/drivers/soc/qcom/Kconfig
  52 index 7bd2c94..3e4486a 100644
  53 --- a/drivers/soc/qcom/Kconfig
  54 +++ b/drivers/soc/qcom/Kconfig
  55 @@ -9,3 +9,9 @@ config QCOM_GSBI
  56            functions for connecting the underlying serial UART, SPI, and I2C
  57            devices to the output pins.
  58
  59 +config QCOM_TCSR
  60 +        tristate "QCOM Top Control and Status Registers"
  61 +        depends on ARCH_QCOM
  62 +        help
  63 +          Say y here to enable TCSR support.  The TCSR provides control
  64 +          functions for various peripherals.
  65 diff --git a/drivers/soc/qcom/Makefile b/drivers/soc/qcom/Makefile
  66 index 4389012..d299492 100644
  67 --- a/drivers/soc/qcom/Makefile
  68 +++ b/drivers/soc/qcom/Makefile
  69 @@ -1 +1,2 @@
  70  obj-$(CONFIG_QCOM_GSBI)        +=      qcom_gsbi.o
  71 +obj-$(CONFIG_QCOM_TCSR)        +=      qcom_tcsr.o
  72 diff --git a/drivers/soc/qcom/qcom_tcsr.c b/drivers/soc/qcom/qcom_tcsr.c
  73 new file mode 100644
  74 index 0000000..dd33153
  75 --- /dev/null
  76 +++ b/drivers/soc/qcom/qcom_tcsr.c
  77 @@ -0,0 +1,64 @@
  78 +/*
  79 + * Copyright (c) 2014, The Linux foundation. All rights reserved.
  80 + *
  81 + * This program is free software; you can redistribute it and/or modify
  82 + * it under the terms of the GNU General Public License rev 2 and
  83 + * only rev 2 as published by the free Software foundation.
  84 + *
  85 + * This program is distributed in the hope that it will be useful,
  86 + * but WITHOUT ANY WARRANTY; without even the implied warranty of
  87 + * MERCHANTABILITY or fITNESS fOR A PARTICULAR PURPOSE.  See the
  88 + * GNU General Public License for more details.
  89 + */
  90 +
  91 +#include <linux/clk.h>
  92 +#include <linux/err.h>
  93 +#include <linux/io.h>
  94 +#include <linux/module.h>
  95 +#include <linux/of.h>
  96 +#include <linux/of_platform.h>
  97 +#include <linux/platform_device.h>
  98 +
  99 +#define TCSR_USB_PORT_SEL      0xb0
 100 +
 101 +static int tcsr_probe(struct platform_device *pdev)
 102 +{
 103 +       struct resource *res;
 104 +       const struct device_node *node = pdev->dev.of_node;
 105 +       void __iomem *base;
 106 +       u32 val;
 107 +
 108 +       res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 109 +       base = devm_ioremap_resource(&pdev->dev, res);
 110 +       if (IS_ERR(base))
 111 +               return PTR_ERR(base);
 112 +
 113 +       if (!of_property_read_u32(node, "qcom,usb-ctrl-select", &val)) {
 114 +               dev_err(&pdev->dev, "setting usb port select = %d\n", val);
 115 +               writel(val, base + TCSR_USB_PORT_SEL);
 116 +       }
 117 +
 118 +       return 0;
 119 +}
 120 +
 121 +static const struct of_device_id tcsr_dt_match[] = {
 122 +       { .compatible = "qcom,tcsr", },
 123 +       { },
 124 +};
 125 +
 126 +MODULE_DEVICE_TABLE(of, tcsr_dt_match);
 127 +
 128 +static struct platform_driver tcsr_driver = {
 129 +       .driver = {
 130 +               .name           = "tcsr",
 131 +               .owner          = THIS_MODULE,
 132 +               .of_match_table = tcsr_dt_match,
 133 +       },
 134 +       .probe = tcsr_probe,
 135 +};
 136 +
 137 +module_platform_driver(tcsr_driver);
 138 +
 139 +MODULE_AUTHOR("Andy Gross <agross@codeaurora.org>");
 140 +MODULE_DESCRIPTION("QCOM TCSR driver");
 141 +MODULE_LICENSE("GPL v2");
 142 diff --git a/include/dt-bindings/soc/qcom,tcsr.h b/include/dt-bindings/soc/qcom,tcsr.h
 143 new file mode 100644
 144 index 0000000..c9d497a
 145 --- /dev/null
 146 +++ b/include/dt-bindings/soc/qcom,tcsr.h
 147 @@ -0,0 +1,19 @@
 148 +/* Copyright (c) 2014, The Linux Foundation. All rights reserved.
 149 + *
 150 + * This program is free software; you can redistribute it and/or modify
 151 + * it under the terms of the GNU General Public License version 2 and
 152 + * only version 2 as published by the Free Software Foundation.
 153 + *
 154 + * This program is distributed in the hope that it will be useful,
 155 + * but WITHOUT ANY WARRANTY; without even the implied warranty of
 156 + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 157 + * GNU General Public License for more details.
 158 + */
 159 +#ifndef __DT_BINDINGS_QCOM_TCSR_H
 160 +#define __DT_BINDINGS_QCOM_TCSR_H
 161 +
 162 +#define TCSR_USB_SELECT_USB3_P0                0x1
 163 +#define TCSR_USB_SELECT_USB3_P1                0x2
 164 +#define TCSR_USB_SELECT_USB3_DUAL      0x3
 165 +
 166 +#endif
 167 --
 168 1.7.10.4
 169