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         void (*hardware_exit)(struct platform_device *pdev);
  66
  67         /*
  68          * option:
  69          *
  70          * Phy reset for platform
  71          */
  72         void (*phy_reset)(struct platform_device *pdev);
  73
  74         /*
  75          * get USB ID function
  76          *  - USBHS_HOST
  77          *  - USBHS_GADGET
  78          */
  79         int (*get_id)(struct platform_device *pdev);
  80
  81         /*
  82          * get VBUS status function.
  83          */
  84         int (*get_vbus)(struct platform_device *pdev);
  85
  86         /*
  87          * option:
  88          *
  89          * VBUS control is needed for Host
  90          */
  91         int (*set_vbus)(struct platform_device *pdev, int enable);
  92 };
  93
  94 /*
  95  * parameters for renesas usbhs
  96  *
  97  * some register needs USB chip specific parameters.
  98  * This struct show it to driver
  99  */
 100 struct renesas_usbhs_driver_param {
 101         /*
 102          * pipe settings
 103          */
 104         u32 *pipe_type; /* array of USB_ENDPOINT_XFER_xxx (from ep0) */
 105         int pipe_size; /* pipe_type array size */
 106
 107         /*
 108          * option:
 109          *
 110          * for BUSWAIT :: BWAIT
 111          * see
 112          *      renesas_usbhs/common.c :: usbhsc_set_buswait()
 113          * */
 114         int buswait_bwait;
 115
 116         /*
 117          * option:
 118          *
 119          * delay time from notify_hotplug callback
 120          */
 121         int detection_delay;
 122
 123         /*
 124          * option:
 125          *
 126          * dma id for dmaengine
 127          */
 128         int d0_tx_id;
 129         int d0_rx_id;
 130         int d1_tx_id;
 131         int d1_rx_id;
 132
 133         /*
 134          * option:
 135          *
 136          * pio <--> dma border.
 137          */
 138         int pio_dma_border; /* default is 64byte */
 139
 140         /*
 141          * option:
 142          */
 143         u32 has_otg:1; /* for controlling PWEN/EXTLP */
 144 };
 145
 146 /*
 147  * option:
 148  *
 149  * platform information for renesas_usbhs driver.
 150  */
 151 struct renesas_usbhs_platform_info {
 152         /*
 153          * option:
 154          *
 155          * platform set these functions before
 156          * call platform_add_devices if needed
 157          */
 158         struct renesas_usbhs_platform_callback  platform_callback;
 159
 160         /*
 161          * driver set these callback functions pointer.
 162          * platform can use it on callback functions
 163          */
 164         struct renesas_usbhs_driver_callback    driver_callback;
 165
 166         /*
 167          * option:
 168          *
 169          * driver use these param for some register
 170          */
 171         struct renesas_usbhs_driver_param       driver_param;
 172 };
 173
 174 /*
 175  * macro for platform
 176  */
 177 #define renesas_usbhs_get_info(pdev)\
 178         ((struct renesas_usbhs_platform_info *)(pdev)->dev.platform_data)
 179
 180 #define renesas_usbhs_call_notify_hotplug(pdev)                         \
 181         ({                                                              \
 182                 struct renesas_usbhs_driver_callback *dc;               \
 183                 dc = &(renesas_usbhs_get_info(pdev)->driver_callback);  \
 184                 if (dc && dc->notify_hotplug)                           \
 185                         dc->notify_hotplug(pdev);                       \
 186         })
 187 #endif /* RENESAS_USB_H */