include/linux/usb/renesas_usbhs.h

   1 /*
   2  * Renesas USB
   3  *
   4  * Copyright (C) 2011 Renesas Solutions Corp.
   5  * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
   6  *
   7  * This program is distributed in the hope that it will be useful,
   8  * but WITHOUT ANY WARRANTY; without even the implied warranty of
   9  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  10  * GNU General Public License for more details.
  11  *
  12  * You should have received a copy of the GNU General Public License
  13  * along with this program; if not, write to the Free Software
  14  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  15  *
  16  */
  17 #ifndef RENESAS_USB_H
  18 #define RENESAS_USB_H
  19 #include <linux/platform_device.h>
  20 #include <linux/usb/ch9.h>
  21
  22 /*
  23  * module type
  24  *
  25  * it will be return value from get_id
  26  */
  27 enum {
  28         USBHS_HOST = 0,
  29         USBHS_GADGET,
  30         USBHS_MAX,
  31 };
  32
  33 /*
  34  * callback functions table for driver
  35  *
  36  * These functions are called from platform for driver.
  37  * Callback function's pointer will be set before
  38  * renesas_usbhs_platform_callback :: hardware_init was called
  39  */
  40 struct renesas_usbhs_driver_callback {
  41         int (*notify_hotplug)(struct platform_device *pdev);
  42 };
  43
  44 /*
  45  * callback functions for platform
  46  *
  47  * These functions are called from driver for platform
  48  */
  49 struct renesas_usbhs_platform_callback {
  50
  51         /*
  52          * option:
  53          *
  54          * Hardware init function for platform.
  55          * it is called when driver was probed.
  56          */
  57         int (*hardware_init)(struct platform_device *pdev);
  58
  59         /*
  60          * option:
  61          *
  62          * Hardware exit function for platform.
  63          * it is called when driver was removed
  64          */
  65         int (*hardware_exit)(struct platform_device *pdev);
  66
  67         /*
  68          * option:
  69          *
  70          * for board specific clock control
  71          */
  72         int (*power_ctrl)(struct platform_device *pdev,
  73                            void __iomem *base, int enable);
  74
  75         /*
  76          * option:
  77          *
  78          * Phy reset for platform
  79          */
  80         int (*phy_reset)(struct platform_device *pdev);
  81
  82         /*
  83          * get USB ID function
  84          *  - USBHS_HOST
  85          *  - USBHS_GADGET
  86          */
  87         int (*get_id)(struct platform_device *pdev);
  88
  89         /*
  90          * get VBUS status function.
  91          */
  92         int (*get_vbus)(struct platform_device *pdev);
  93
  94         /*
  95          * option:
  96          *
  97          * VBUS control is needed for Host
  98          */
  99         int (*set_vbus)(struct platform_device *pdev, int enable);
 100 };
 101
 102 /*
 103  * parameters for renesas usbhs
 104  *
 105  * some register needs USB chip specific parameters.
 106  * This struct show it to driver
 107  */
 108
 109 struct renesas_usbhs_driver_pipe_config {
 110         u8 type;        /* USB_ENDPOINT_XFER_xxx */
 111         u16 bufsize;
 112         u8 bufnum;
 113         bool double_buf;
 114 };
 115 #define RENESAS_USBHS_PIPE(_type, _size, _num, _double_buf)     {       \
 116                         .type = (_type),                \
 117                         .bufsize = (_size),             \
 118                         .bufnum = (_num),               \
 119                         .double_buf = (_double_buf),    \
 120         }
 121
 122 struct renesas_usbhs_driver_param {
 123         /*
 124          * pipe settings
 125          */
 126         struct renesas_usbhs_driver_pipe_config *pipe_configs;
 127         int pipe_size; /* pipe_configs array size */
 128
 129         /*
 130          * option:
 131          *
 132          * for BUSWAIT :: BWAIT
 133          * see
 134          *      renesas_usbhs/common.c :: usbhsc_set_buswait()
 135          * */
 136         int buswait_bwait;
 137
 138         /*
 139          * option:
 140          *
 141          * delay time from notify_hotplug callback
 142          */
 143         int detection_delay; /* msec */
 144
 145         /*
 146          * option:
 147          *
 148          * dma id for dmaengine
 149          * The data transfer direction on D0FIFO/D1FIFO should be
 150          * fixed for keeping consistency.
 151          * So, the platform id settings will be..
 152          *      .d0_tx_id = xx_TX,
 153          *      .d1_rx_id = xx_RX,
 154          * or
 155          *      .d1_tx_id = xx_TX,
 156          *      .d0_rx_id = xx_RX,
 157          */
 158         int d0_tx_id;
 159         int d0_rx_id;
 160         int d1_tx_id;
 161         int d1_rx_id;
 162         int d2_tx_id;
 163         int d2_rx_id;
 164         int d3_tx_id;
 165         int d3_rx_id;
 166
 167         /*
 168          * option:
 169          *
 170          * pio <--> dma border.
 171          */
 172         int pio_dma_border; /* default is 64byte */
 173
 174         uintptr_t type;
 175         u32 enable_gpio;
 176
 177         /*
 178          * option:
 179          */
 180         u32 has_otg:1; /* for controlling PWEN/EXTLP */
 181         u32 has_sudmac:1; /* for SUDMAC */
 182         u32 has_usb_dmac:1; /* for USB-DMAC */
 183 #define USBHS_USB_DMAC_XFER_SIZE        32      /* hardcode the xfer size */
 184 };
 185
 186 #define USBHS_TYPE_RCAR_GEN2    1
 187 #define USBHS_TYPE_RCAR_GEN3    2
 188
 189 /*
 190  * option:
 191  *
 192  * platform information for renesas_usbhs driver.
 193  */
 194 struct renesas_usbhs_platform_info {
 195         /*
 196          * option:
 197          *
 198          * platform set these functions before
 199          * call platform_add_devices if needed
 200          */
 201         struct renesas_usbhs_platform_callback  platform_callback;
 202
 203         /*
 204          * driver set these callback functions pointer.
 205          * platform can use it on callback functions
 206          */
 207         struct renesas_usbhs_driver_callback    driver_callback;
 208
 209         /*
 210          * option:
 211          *
 212          * driver use these param for some register
 213          */
 214         struct renesas_usbhs_driver_param       driver_param;
 215 };
 216
 217 /*
 218  * macro for platform
 219  */
 220 #define renesas_usbhs_get_info(pdev)\
 221         ((struct renesas_usbhs_platform_info *)(pdev)->dev.platform_data)
 222
 223 #define renesas_usbhs_call_notify_hotplug(pdev)                         \
 224         ({                                                              \
 225                 struct renesas_usbhs_driver_callback *dc;               \
 226                 dc = &(renesas_usbhs_get_info(pdev)->driver_callback);  \
 227                 if (dc && dc->notify_hotplug)                           \
 228                         dc->notify_hotplug(pdev);                       \
 229         })
 230 #endif /* RENESAS_USB_H */