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          * for board specific clock control
  71          */
  72         void (*power_ctrl)(struct platform_device *pdev,
  73                            void __iomem *base, int enable);
  74
  75         /*
  76          * option:
  77          *
  78          * Phy reset for platform
  79          */
  80         void (*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 struct renesas_usbhs_driver_param {
 109         /*
 110          * pipe settings
 111          */
 112         u32 *pipe_type; /* array of USB_ENDPOINT_XFER_xxx (from ep0) */
 113         int pipe_size; /* pipe_type array size */
 114
 115         /*
 116          * option:
 117          *
 118          * for BUSWAIT :: BWAIT
 119          * see
 120          *      renesas_usbhs/common.c :: usbhsc_set_buswait()
 121          * */
 122         int buswait_bwait;
 123
 124         /*
 125          * option:
 126          *
 127          * delay time from notify_hotplug callback
 128          */
 129         int detection_delay; /* msec */
 130
 131         /*
 132          * option:
 133          *
 134          * dma id for dmaengine
 135          */
 136         int d0_tx_id;
 137         int d0_rx_id;
 138         int d1_tx_id;
 139         int d1_rx_id;
 140
 141         /*
 142          * option:
 143          *
 144          * pio <--> dma border.
 145          */
 146         int pio_dma_border; /* default is 64byte */
 147
 148         /*
 149          * option:
 150          */
 151         u32 has_otg:1; /* for controlling PWEN/EXTLP */
 152 };
 153
 154 /*
 155  * option:
 156  *
 157  * platform information for renesas_usbhs driver.
 158  */
 159 struct renesas_usbhs_platform_info {
 160         /*
 161          * option:
 162          *
 163          * platform set these functions before
 164          * call platform_add_devices if needed
 165          */
 166         struct renesas_usbhs_platform_callback  platform_callback;
 167
 168         /*
 169          * driver set these callback functions pointer.
 170          * platform can use it on callback functions
 171          */
 172         struct renesas_usbhs_driver_callback    driver_callback;
 173
 174         /*
 175          * option:
 176          *
 177          * driver use these param for some register
 178          */
 179         struct renesas_usbhs_driver_param       driver_param;
 180 };
 181
 182 /*
 183  * macro for platform
 184  */
 185 #define renesas_usbhs_get_info(pdev)\
 186         ((struct renesas_usbhs_platform_info *)(pdev)->dev.platform_data)
 187
 188 #define renesas_usbhs_call_notify_hotplug(pdev)                         \
 189         ({                                                              \
 190                 struct renesas_usbhs_driver_callback *dc;               \
 191                 dc = &(renesas_usbhs_get_info(pdev)->driver_callback);  \
 192                 if (dc && dc->notify_hotplug)                           \
 193                         dc->notify_hotplug(pdev);                       \
 194         })
 195 #endif /* RENESAS_USB_H */