diff options
Diffstat (limited to 'include/linux/usb/renesas_usbhs.h')
| -rw-r--r-- | include/linux/usb/renesas_usbhs.h | 212 |
1 files changed, 212 insertions, 0 deletions
diff --git a/include/linux/usb/renesas_usbhs.h b/include/linux/usb/renesas_usbhs.h new file mode 100644 index 000000000..d418c5552 --- /dev/null +++ b/include/linux/usb/renesas_usbhs.h @@ -0,0 +1,212 @@ +// SPDX-License-Identifier: GPL-1.0+ +/* + * Renesas USB + * + * Copyright (C) 2011 Renesas Solutions Corp. + * Copyright (C) 2019 Renesas Electronics Corporation + * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + * + */ +#ifndef RENESAS_USB_H +#define RENESAS_USB_H +#include <linux/notifier.h> +#include <linux/platform_device.h> +#include <linux/usb/ch9.h> + +/* + * module type + * + * it will be return value from get_id + */ +enum { + USBHS_HOST = 0, + USBHS_GADGET, + USBHS_MAX, +}; + +/* + * callback functions for platform + * + * These functions are called from driver for platform + */ +struct renesas_usbhs_platform_callback { + + /* + * option: + * + * Hardware init function for platform. + * it is called when driver was probed. + */ + int (*hardware_init)(struct platform_device *pdev); + + /* + * option: + * + * Hardware exit function for platform. + * it is called when driver was removed + */ + int (*hardware_exit)(struct platform_device *pdev); + + /* + * option: + * + * for board specific clock control + */ + int (*power_ctrl)(struct platform_device *pdev, + void __iomem *base, int enable); + + /* + * option: + * + * Phy reset for platform + */ + int (*phy_reset)(struct platform_device *pdev); + + /* + * get USB ID function + * - USBHS_HOST + * - USBHS_GADGET + */ + int (*get_id)(struct platform_device *pdev); + + /* + * get VBUS status function. + */ + int (*get_vbus)(struct platform_device *pdev); + + /* + * option: + * + * VBUS control is needed for Host + */ + int (*set_vbus)(struct platform_device *pdev, int enable); + + /* + * option: + * extcon notifier to set host/peripheral mode. + */ + int (*notifier)(struct notifier_block *nb, unsigned long event, + void *data); +}; + +/* + * parameters for renesas usbhs + * + * some register needs USB chip specific parameters. + * This struct show it to driver + */ + +struct renesas_usbhs_driver_pipe_config { + u8 type; /* USB_ENDPOINT_XFER_xxx */ + u16 bufsize; + u8 bufnum; + bool double_buf; +}; +#define RENESAS_USBHS_PIPE(_type, _size, _num, _double_buf) { \ + .type = (_type), \ + .bufsize = (_size), \ + .bufnum = (_num), \ + .double_buf = (_double_buf), \ + } + +struct renesas_usbhs_driver_param { + /* + * pipe settings + */ + struct renesas_usbhs_driver_pipe_config *pipe_configs; + int pipe_size; /* pipe_configs array size */ + + /* + * option: + * + * for BUSWAIT :: BWAIT + * see + * renesas_usbhs/common.c :: usbhsc_set_buswait() + * */ + int buswait_bwait; + + /* + * option: + * + * delay time from notify_hotplug callback + */ + int detection_delay; /* msec */ + + /* + * option: + * + * dma id for dmaengine + * The data transfer direction on D0FIFO/D1FIFO should be + * fixed for keeping consistency. + * So, the platform id settings will be.. + * .d0_tx_id = xx_TX, + * .d1_rx_id = xx_RX, + * or + * .d1_tx_id = xx_TX, + * .d0_rx_id = xx_RX, + */ + int d0_tx_id; + int d0_rx_id; + int d1_tx_id; + int d1_rx_id; + int d2_tx_id; + int d2_rx_id; + int d3_tx_id; + int d3_rx_id; + + /* + * option: + * + * pio <--> dma border. + */ + int pio_dma_border; /* default is 64byte */ + + /* + * option: + */ + u32 has_usb_dmac:1; /* for USB-DMAC */ + u32 runtime_pwctrl:1; + u32 has_cnen:1; + u32 cfifo_byte_addr:1; /* CFIFO is byte addressable */ +#define USBHS_USB_DMAC_XFER_SIZE 32 /* hardcode the xfer size */ + u32 multi_clks:1; + u32 has_new_pipe_configs:1; +}; + +/* + * option: + * + * platform information for renesas_usbhs driver. + */ +struct renesas_usbhs_platform_info { + /* + * option: + * + * platform set these functions before + * call platform_add_devices if needed + */ + struct renesas_usbhs_platform_callback platform_callback; + + /* + * option: + * + * driver use these param for some register + */ + struct renesas_usbhs_driver_param driver_param; +}; + +/* + * macro for platform + */ +#define renesas_usbhs_get_info(pdev)\ + ((struct renesas_usbhs_platform_info *)(pdev)->dev.platform_data) +#endif /* RENESAS_USB_H */ |