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be0a42a7d6
All platform related codes (rcar[23].c and rza{2}.c) has its own .get_id function as "USBHS_GADGET". So, we can use a common function for it. Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
907 lines
21 KiB
C
907 lines
21 KiB
C
// SPDX-License-Identifier: GPL-1.0+
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/*
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* Renesas USB driver
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*
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* Copyright (C) 2011 Renesas Solutions Corp.
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* Copyright (C) 2019 Renesas Electronics Corporation
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* Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
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*/
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#include <linux/clk.h>
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#include <linux/err.h>
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#include <linux/gpio.h>
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#include <linux/io.h>
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#include <linux/module.h>
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#include <linux/of_device.h>
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#include <linux/of_gpio.h>
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#include <linux/pm_runtime.h>
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#include <linux/reset.h>
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#include <linux/slab.h>
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#include <linux/sysfs.h>
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#include "common.h"
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#include "rcar2.h"
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#include "rcar3.h"
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#include "rza.h"
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/*
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* image of renesas_usbhs
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*
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* ex) gadget case
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* mod.c
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* mod_gadget.c
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* mod_host.c pipe.c fifo.c
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*
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* +-------+ +-----------+
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* | pipe0 |------>| fifo pio |
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* +------------+ +-------+ +-----------+
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* | mod_gadget |=====> | pipe1 |--+
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* +------------+ +-------+ | +-----------+
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* | pipe2 | | +-| fifo dma0 |
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* +------------+ +-------+ | | +-----------+
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* | mod_host | | pipe3 |<-|--+
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* +------------+ +-------+ | +-----------+
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* | .... | +--->| fifo dma1 |
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* | .... | +-----------+
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*/
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/*
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* platform call back
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*
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* renesas usb support platform callback function.
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* Below macro call it.
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* if platform doesn't have callback, it return 0 (no error)
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*/
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#define usbhs_platform_call(priv, func, args...)\
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(!(priv) ? -ENODEV : \
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!((priv)->pfunc.func) ? 0 : \
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(priv)->pfunc.func(args))
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/*
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* common functions
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*/
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u16 usbhs_read(struct usbhs_priv *priv, u32 reg)
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{
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return ioread16(priv->base + reg);
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}
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void usbhs_write(struct usbhs_priv *priv, u32 reg, u16 data)
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{
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iowrite16(data, priv->base + reg);
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}
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void usbhs_bset(struct usbhs_priv *priv, u32 reg, u16 mask, u16 data)
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{
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u16 val = usbhs_read(priv, reg);
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val &= ~mask;
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val |= data & mask;
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usbhs_write(priv, reg, val);
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}
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struct usbhs_priv *usbhs_pdev_to_priv(struct platform_device *pdev)
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{
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return dev_get_drvdata(&pdev->dev);
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}
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int usbhs_get_id_as_gadget(struct platform_device *pdev)
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{
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return USBHS_GADGET;
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}
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/*
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* syscfg functions
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*/
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static void usbhs_sys_clock_ctrl(struct usbhs_priv *priv, int enable)
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{
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usbhs_bset(priv, SYSCFG, SCKE, enable ? SCKE : 0);
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}
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void usbhs_sys_host_ctrl(struct usbhs_priv *priv, int enable)
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{
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u16 mask = DCFM | DRPD | DPRPU | HSE | USBE;
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u16 val = DCFM | DRPD | HSE | USBE;
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/*
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* if enable
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*
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* - select Host mode
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* - D+ Line/D- Line Pull-down
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*/
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usbhs_bset(priv, SYSCFG, mask, enable ? val : 0);
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}
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void usbhs_sys_function_ctrl(struct usbhs_priv *priv, int enable)
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{
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u16 mask = DCFM | DRPD | DPRPU | HSE | USBE;
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u16 val = HSE | USBE;
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/* CNEN bit is required for function operation */
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if (usbhs_get_dparam(priv, has_cnen)) {
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mask |= CNEN;
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val |= CNEN;
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}
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/*
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* if enable
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*
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* - select Function mode
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* - D+ Line Pull-up is disabled
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* When D+ Line Pull-up is enabled,
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* calling usbhs_sys_function_pullup(,1)
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*/
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usbhs_bset(priv, SYSCFG, mask, enable ? val : 0);
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}
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void usbhs_sys_function_pullup(struct usbhs_priv *priv, int enable)
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{
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usbhs_bset(priv, SYSCFG, DPRPU, enable ? DPRPU : 0);
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}
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void usbhs_sys_set_test_mode(struct usbhs_priv *priv, u16 mode)
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{
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usbhs_write(priv, TESTMODE, mode);
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}
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/*
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* frame functions
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*/
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int usbhs_frame_get_num(struct usbhs_priv *priv)
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{
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return usbhs_read(priv, FRMNUM) & FRNM_MASK;
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}
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/*
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* usb request functions
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*/
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void usbhs_usbreq_get_val(struct usbhs_priv *priv, struct usb_ctrlrequest *req)
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{
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u16 val;
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val = usbhs_read(priv, USBREQ);
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req->bRequest = (val >> 8) & 0xFF;
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req->bRequestType = (val >> 0) & 0xFF;
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req->wValue = usbhs_read(priv, USBVAL);
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req->wIndex = usbhs_read(priv, USBINDX);
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req->wLength = usbhs_read(priv, USBLENG);
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}
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void usbhs_usbreq_set_val(struct usbhs_priv *priv, struct usb_ctrlrequest *req)
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{
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usbhs_write(priv, USBREQ, (req->bRequest << 8) | req->bRequestType);
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usbhs_write(priv, USBVAL, req->wValue);
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usbhs_write(priv, USBINDX, req->wIndex);
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usbhs_write(priv, USBLENG, req->wLength);
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usbhs_bset(priv, DCPCTR, SUREQ, SUREQ);
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}
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/*
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* bus/vbus functions
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*/
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void usbhs_bus_send_sof_enable(struct usbhs_priv *priv)
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{
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u16 status = usbhs_read(priv, DVSTCTR) & (USBRST | UACT);
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if (status != USBRST) {
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struct device *dev = usbhs_priv_to_dev(priv);
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dev_err(dev, "usbhs should be reset\n");
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}
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usbhs_bset(priv, DVSTCTR, (USBRST | UACT), UACT);
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}
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void usbhs_bus_send_reset(struct usbhs_priv *priv)
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{
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usbhs_bset(priv, DVSTCTR, (USBRST | UACT), USBRST);
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}
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int usbhs_bus_get_speed(struct usbhs_priv *priv)
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{
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u16 dvstctr = usbhs_read(priv, DVSTCTR);
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switch (RHST & dvstctr) {
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case RHST_LOW_SPEED:
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return USB_SPEED_LOW;
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case RHST_FULL_SPEED:
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return USB_SPEED_FULL;
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case RHST_HIGH_SPEED:
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return USB_SPEED_HIGH;
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}
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return USB_SPEED_UNKNOWN;
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}
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int usbhs_vbus_ctrl(struct usbhs_priv *priv, int enable)
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{
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struct platform_device *pdev = usbhs_priv_to_pdev(priv);
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return usbhs_platform_call(priv, set_vbus, pdev, enable);
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}
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static void usbhsc_bus_init(struct usbhs_priv *priv)
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{
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usbhs_write(priv, DVSTCTR, 0);
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usbhs_vbus_ctrl(priv, 0);
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}
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/*
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* device configuration
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*/
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int usbhs_set_device_config(struct usbhs_priv *priv, int devnum,
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u16 upphub, u16 hubport, u16 speed)
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{
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struct device *dev = usbhs_priv_to_dev(priv);
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u16 usbspd = 0;
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u32 reg = DEVADD0 + (2 * devnum);
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if (devnum > 10) {
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dev_err(dev, "cannot set speed to unknown device %d\n", devnum);
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return -EIO;
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}
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if (upphub > 0xA) {
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dev_err(dev, "unsupported hub number %d\n", upphub);
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return -EIO;
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}
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switch (speed) {
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case USB_SPEED_LOW:
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usbspd = USBSPD_SPEED_LOW;
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break;
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case USB_SPEED_FULL:
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usbspd = USBSPD_SPEED_FULL;
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break;
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case USB_SPEED_HIGH:
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usbspd = USBSPD_SPEED_HIGH;
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break;
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default:
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dev_err(dev, "unsupported speed %d\n", speed);
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return -EIO;
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}
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usbhs_write(priv, reg, UPPHUB(upphub) |
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HUBPORT(hubport)|
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USBSPD(usbspd));
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return 0;
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}
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/*
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* interrupt functions
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*/
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void usbhs_xxxsts_clear(struct usbhs_priv *priv, u16 sts_reg, u16 bit)
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{
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u16 pipe_mask = (u16)GENMASK(usbhs_get_dparam(priv, pipe_size), 0);
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usbhs_write(priv, sts_reg, ~(1 << bit) & pipe_mask);
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}
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/*
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* local functions
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*/
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static void usbhsc_set_buswait(struct usbhs_priv *priv)
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{
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int wait = usbhs_get_dparam(priv, buswait_bwait);
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/* set bus wait if platform have */
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if (wait)
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usbhs_bset(priv, BUSWAIT, 0x000F, wait);
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}
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static bool usbhsc_is_multi_clks(struct usbhs_priv *priv)
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{
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return priv->dparam.multi_clks;
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}
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static int usbhsc_clk_get(struct device *dev, struct usbhs_priv *priv)
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{
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if (!usbhsc_is_multi_clks(priv))
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return 0;
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/* The first clock should exist */
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priv->clks[0] = of_clk_get(dev_of_node(dev), 0);
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if (IS_ERR(priv->clks[0]))
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return PTR_ERR(priv->clks[0]);
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/*
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* To backward compatibility with old DT, this driver checks the return
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* value if it's -ENOENT or not.
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*/
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priv->clks[1] = of_clk_get(dev_of_node(dev), 1);
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if (PTR_ERR(priv->clks[1]) == -ENOENT)
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priv->clks[1] = NULL;
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else if (IS_ERR(priv->clks[1]))
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return PTR_ERR(priv->clks[1]);
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return 0;
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}
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static void usbhsc_clk_put(struct usbhs_priv *priv)
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{
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int i;
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if (!usbhsc_is_multi_clks(priv))
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return;
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for (i = 0; i < ARRAY_SIZE(priv->clks); i++)
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clk_put(priv->clks[i]);
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}
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static int usbhsc_clk_prepare_enable(struct usbhs_priv *priv)
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{
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int i, ret;
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if (!usbhsc_is_multi_clks(priv))
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return 0;
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for (i = 0; i < ARRAY_SIZE(priv->clks); i++) {
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ret = clk_prepare_enable(priv->clks[i]);
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if (ret) {
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while (--i >= 0)
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clk_disable_unprepare(priv->clks[i]);
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return ret;
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}
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}
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return ret;
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}
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static void usbhsc_clk_disable_unprepare(struct usbhs_priv *priv)
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{
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int i;
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if (!usbhsc_is_multi_clks(priv))
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return;
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for (i = 0; i < ARRAY_SIZE(priv->clks); i++)
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clk_disable_unprepare(priv->clks[i]);
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}
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/*
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* platform default param
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*/
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/* commonly used on old SH-Mobile SoCs */
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static struct renesas_usbhs_driver_pipe_config usbhsc_default_pipe[] = {
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RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_CONTROL, 64, 0x00, false),
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RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_ISOC, 1024, 0x08, false),
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RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_ISOC, 1024, 0x18, false),
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RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_BULK, 512, 0x28, true),
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RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_BULK, 512, 0x38, true),
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RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_BULK, 512, 0x48, true),
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RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_INT, 64, 0x04, false),
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RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_INT, 64, 0x05, false),
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RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_INT, 64, 0x06, false),
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RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_INT, 64, 0x07, false),
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};
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/* commonly used on newer SH-Mobile and R-Car SoCs */
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static struct renesas_usbhs_driver_pipe_config usbhsc_new_pipe[] = {
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RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_CONTROL, 64, 0x00, false),
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RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_ISOC, 1024, 0x08, true),
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RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_ISOC, 1024, 0x28, true),
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RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_BULK, 512, 0x48, true),
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RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_BULK, 512, 0x58, true),
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RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_BULK, 512, 0x68, true),
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RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_INT, 64, 0x04, false),
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RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_INT, 64, 0x05, false),
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RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_INT, 64, 0x06, false),
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RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_BULK, 512, 0x78, true),
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RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_BULK, 512, 0x88, true),
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RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_BULK, 512, 0x98, true),
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RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_BULK, 512, 0xa8, true),
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RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_BULK, 512, 0xb8, true),
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RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_BULK, 512, 0xc8, true),
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RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_BULK, 512, 0xd8, true),
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};
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/*
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* power control
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*/
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static void usbhsc_power_ctrl(struct usbhs_priv *priv, int enable)
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{
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struct platform_device *pdev = usbhs_priv_to_pdev(priv);
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struct device *dev = usbhs_priv_to_dev(priv);
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if (enable) {
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/* enable PM */
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pm_runtime_get_sync(dev);
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/* enable clks */
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if (usbhsc_clk_prepare_enable(priv))
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return;
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/* enable platform power */
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usbhs_platform_call(priv, power_ctrl, pdev, priv->base, enable);
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/* USB on */
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usbhs_sys_clock_ctrl(priv, enable);
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} else {
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/* USB off */
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usbhs_sys_clock_ctrl(priv, enable);
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/* disable platform power */
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usbhs_platform_call(priv, power_ctrl, pdev, priv->base, enable);
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/* disable clks */
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usbhsc_clk_disable_unprepare(priv);
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/* disable PM */
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pm_runtime_put_sync(dev);
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}
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}
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/*
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* hotplug
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*/
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static void usbhsc_hotplug(struct usbhs_priv *priv)
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{
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struct platform_device *pdev = usbhs_priv_to_pdev(priv);
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struct usbhs_mod *mod = usbhs_mod_get_current(priv);
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int id;
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int enable;
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int cable;
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int ret;
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/*
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* get vbus status from platform
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*/
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enable = usbhs_mod_info_call(priv, get_vbus, pdev);
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/*
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* get id from platform
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*/
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id = usbhs_platform_call(priv, get_id, pdev);
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if (enable && !mod) {
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if (priv->edev) {
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cable = extcon_get_state(priv->edev, EXTCON_USB_HOST);
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if ((cable > 0 && id != USBHS_HOST) ||
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(!cable && id != USBHS_GADGET)) {
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dev_info(&pdev->dev,
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"USB cable plugged in doesn't match the selected role!\n");
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return;
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}
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}
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ret = usbhs_mod_change(priv, id);
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if (ret < 0)
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return;
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dev_dbg(&pdev->dev, "%s enable\n", __func__);
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/* power on */
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if (usbhs_get_dparam(priv, runtime_pwctrl))
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usbhsc_power_ctrl(priv, enable);
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/* bus init */
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usbhsc_set_buswait(priv);
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usbhsc_bus_init(priv);
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/* module start */
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usbhs_mod_call(priv, start, priv);
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} else if (!enable && mod) {
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dev_dbg(&pdev->dev, "%s disable\n", __func__);
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/* module stop */
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usbhs_mod_call(priv, stop, priv);
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/* bus init */
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usbhsc_bus_init(priv);
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/* power off */
|
|
if (usbhs_get_dparam(priv, runtime_pwctrl))
|
|
usbhsc_power_ctrl(priv, enable);
|
|
|
|
usbhs_mod_change(priv, -1);
|
|
|
|
/* reset phy for next connection */
|
|
usbhs_platform_call(priv, phy_reset, pdev);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* notify hotplug
|
|
*/
|
|
static void usbhsc_notify_hotplug(struct work_struct *work)
|
|
{
|
|
struct usbhs_priv *priv = container_of(work,
|
|
struct usbhs_priv,
|
|
notify_hotplug_work.work);
|
|
usbhsc_hotplug(priv);
|
|
}
|
|
|
|
int usbhsc_schedule_notify_hotplug(struct platform_device *pdev)
|
|
{
|
|
struct usbhs_priv *priv = usbhs_pdev_to_priv(pdev);
|
|
int delay = usbhs_get_dparam(priv, detection_delay);
|
|
|
|
/*
|
|
* This functions will be called in interrupt.
|
|
* To make sure safety context,
|
|
* use workqueue for usbhs_notify_hotplug
|
|
*/
|
|
schedule_delayed_work(&priv->notify_hotplug_work,
|
|
msecs_to_jiffies(delay));
|
|
return 0;
|
|
}
|
|
|
|
static const struct usbhs_of_data rcar_gen2_data = {
|
|
.platform_callback = &usbhs_rcar2_ops,
|
|
.param = {
|
|
.has_usb_dmac = 1,
|
|
.has_new_pipe_configs = 1,
|
|
}
|
|
};
|
|
|
|
static const struct usbhs_of_data rcar_gen3_data = {
|
|
.platform_callback = &usbhs_rcar3_ops,
|
|
.param = {
|
|
.has_usb_dmac = 1,
|
|
.multi_clks = 1,
|
|
.has_new_pipe_configs = 1,
|
|
}
|
|
};
|
|
|
|
static const struct usbhs_of_data rcar_gen3_with_pll_data = {
|
|
.platform_callback = &usbhs_rcar3_with_pll_ops,
|
|
.param = {
|
|
.has_usb_dmac = 1,
|
|
.multi_clks = 1,
|
|
.has_new_pipe_configs = 1,
|
|
}
|
|
};
|
|
|
|
static const struct usbhs_of_data rza1_data = {
|
|
.platform_callback = &usbhs_rza1_ops,
|
|
.param = {
|
|
.has_new_pipe_configs = 1,
|
|
}
|
|
};
|
|
|
|
static const struct usbhs_of_data rza2_data = {
|
|
.platform_callback = &usbhs_rza2_ops,
|
|
.param = {
|
|
.has_cnen = 1,
|
|
.cfifo_byte_addr = 1,
|
|
.has_new_pipe_configs = 1,
|
|
}
|
|
};
|
|
|
|
/*
|
|
* platform functions
|
|
*/
|
|
static const struct of_device_id usbhs_of_match[] = {
|
|
{
|
|
.compatible = "renesas,usbhs-r8a774c0",
|
|
.data = &rcar_gen3_with_pll_data,
|
|
},
|
|
{
|
|
.compatible = "renesas,usbhs-r8a7790",
|
|
.data = &rcar_gen2_data,
|
|
},
|
|
{
|
|
.compatible = "renesas,usbhs-r8a7791",
|
|
.data = &rcar_gen2_data,
|
|
},
|
|
{
|
|
.compatible = "renesas,usbhs-r8a7794",
|
|
.data = &rcar_gen2_data,
|
|
},
|
|
{
|
|
.compatible = "renesas,usbhs-r8a7795",
|
|
.data = &rcar_gen3_data,
|
|
},
|
|
{
|
|
.compatible = "renesas,usbhs-r8a7796",
|
|
.data = &rcar_gen3_data,
|
|
},
|
|
{
|
|
.compatible = "renesas,usbhs-r8a77990",
|
|
.data = &rcar_gen3_with_pll_data,
|
|
},
|
|
{
|
|
.compatible = "renesas,usbhs-r8a77995",
|
|
.data = &rcar_gen3_with_pll_data,
|
|
},
|
|
{
|
|
.compatible = "renesas,rcar-gen2-usbhs",
|
|
.data = &rcar_gen2_data,
|
|
},
|
|
{
|
|
.compatible = "renesas,rcar-gen3-usbhs",
|
|
.data = &rcar_gen3_data,
|
|
},
|
|
{
|
|
.compatible = "renesas,rza1-usbhs",
|
|
.data = &rza1_data,
|
|
},
|
|
{
|
|
.compatible = "renesas,rza2-usbhs",
|
|
.data = &rza2_data,
|
|
},
|
|
{ },
|
|
};
|
|
MODULE_DEVICE_TABLE(of, usbhs_of_match);
|
|
|
|
static struct renesas_usbhs_platform_info *usbhs_parse_dt(struct device *dev)
|
|
{
|
|
struct renesas_usbhs_platform_info *info;
|
|
struct renesas_usbhs_driver_param *dparam;
|
|
const struct usbhs_of_data *data;
|
|
|
|
info = devm_kzalloc(dev, sizeof(*info), GFP_KERNEL);
|
|
if (!info)
|
|
return NULL;
|
|
|
|
data = of_device_get_match_data(dev);
|
|
if (!data)
|
|
return NULL;
|
|
|
|
dparam = &info->driver_param;
|
|
*dparam = data->param;
|
|
info->platform_callback = *data->platform_callback;
|
|
|
|
return info;
|
|
}
|
|
|
|
static int usbhs_probe(struct platform_device *pdev)
|
|
{
|
|
struct renesas_usbhs_platform_info *info = renesas_usbhs_get_info(pdev);
|
|
struct usbhs_priv *priv;
|
|
struct resource *res, *irq_res;
|
|
struct device *dev = &pdev->dev;
|
|
int ret, gpio;
|
|
u32 tmp;
|
|
|
|
/* check device node */
|
|
if (dev_of_node(dev))
|
|
info = pdev->dev.platform_data = usbhs_parse_dt(&pdev->dev);
|
|
|
|
/* check platform information */
|
|
if (!info) {
|
|
dev_err(dev, "no platform information\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* platform data */
|
|
irq_res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
|
|
if (!irq_res) {
|
|
dev_err(dev, "Not enough Renesas USB platform resources.\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
/* usb private data */
|
|
priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
|
|
if (!priv)
|
|
return -ENOMEM;
|
|
|
|
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
|
priv->base = devm_ioremap_resource(&pdev->dev, res);
|
|
if (IS_ERR(priv->base))
|
|
return PTR_ERR(priv->base);
|
|
|
|
if (of_property_read_bool(dev_of_node(dev), "extcon")) {
|
|
priv->edev = extcon_get_edev_by_phandle(dev, 0);
|
|
if (IS_ERR(priv->edev))
|
|
return PTR_ERR(priv->edev);
|
|
}
|
|
|
|
priv->rsts = devm_reset_control_array_get_optional_shared(dev);
|
|
if (IS_ERR(priv->rsts))
|
|
return PTR_ERR(priv->rsts);
|
|
|
|
/*
|
|
* care platform info
|
|
*/
|
|
|
|
priv->dparam = info->driver_param;
|
|
|
|
if (!info->platform_callback.get_id) {
|
|
dev_err(dev, "no platform callbacks\n");
|
|
return -EINVAL;
|
|
}
|
|
priv->pfunc = info->platform_callback;
|
|
|
|
/* set default param if platform doesn't have */
|
|
if (usbhs_get_dparam(priv, has_new_pipe_configs)) {
|
|
priv->dparam.pipe_configs = usbhsc_new_pipe;
|
|
priv->dparam.pipe_size = ARRAY_SIZE(usbhsc_new_pipe);
|
|
} else if (!priv->dparam.pipe_configs) {
|
|
priv->dparam.pipe_configs = usbhsc_default_pipe;
|
|
priv->dparam.pipe_size = ARRAY_SIZE(usbhsc_default_pipe);
|
|
}
|
|
if (!priv->dparam.pio_dma_border)
|
|
priv->dparam.pio_dma_border = 64; /* 64byte */
|
|
if (!of_property_read_u32(dev_of_node(dev), "renesas,buswait", &tmp))
|
|
priv->dparam.buswait_bwait = tmp;
|
|
gpio = of_get_named_gpio_flags(dev_of_node(dev), "renesas,enable-gpio",
|
|
0, NULL);
|
|
if (gpio > 0)
|
|
priv->dparam.enable_gpio = gpio;
|
|
|
|
/* FIXME */
|
|
/* runtime power control ? */
|
|
if (priv->pfunc.get_vbus)
|
|
usbhs_get_dparam(priv, runtime_pwctrl) = 1;
|
|
|
|
/*
|
|
* priv settings
|
|
*/
|
|
priv->irq = irq_res->start;
|
|
if (irq_res->flags & IORESOURCE_IRQ_SHAREABLE)
|
|
priv->irqflags = IRQF_SHARED;
|
|
priv->pdev = pdev;
|
|
INIT_DELAYED_WORK(&priv->notify_hotplug_work, usbhsc_notify_hotplug);
|
|
spin_lock_init(usbhs_priv_to_lock(priv));
|
|
|
|
/* call pipe and module init */
|
|
ret = usbhs_pipe_probe(priv);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = usbhs_fifo_probe(priv);
|
|
if (ret < 0)
|
|
goto probe_end_pipe_exit;
|
|
|
|
ret = usbhs_mod_probe(priv);
|
|
if (ret < 0)
|
|
goto probe_end_fifo_exit;
|
|
|
|
/* dev_set_drvdata should be called after usbhs_mod_init */
|
|
platform_set_drvdata(pdev, priv);
|
|
|
|
ret = reset_control_deassert(priv->rsts);
|
|
if (ret)
|
|
goto probe_fail_rst;
|
|
|
|
ret = usbhsc_clk_get(dev, priv);
|
|
if (ret)
|
|
goto probe_fail_clks;
|
|
|
|
/*
|
|
* deviece reset here because
|
|
* USB device might be used in boot loader.
|
|
*/
|
|
usbhs_sys_clock_ctrl(priv, 0);
|
|
|
|
/* check GPIO determining if USB function should be enabled */
|
|
if (priv->dparam.enable_gpio) {
|
|
gpio_request_one(priv->dparam.enable_gpio, GPIOF_IN, NULL);
|
|
ret = !gpio_get_value(priv->dparam.enable_gpio);
|
|
gpio_free(priv->dparam.enable_gpio);
|
|
if (ret) {
|
|
dev_warn(dev, "USB function not selected (GPIO %d)\n",
|
|
priv->dparam.enable_gpio);
|
|
ret = -ENOTSUPP;
|
|
goto probe_end_mod_exit;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* platform call
|
|
*
|
|
* USB phy setup might depend on CPU/Board.
|
|
* If platform has its callback functions,
|
|
* call it here.
|
|
*/
|
|
ret = usbhs_platform_call(priv, hardware_init, pdev);
|
|
if (ret < 0) {
|
|
dev_err(dev, "platform init failed.\n");
|
|
goto probe_end_mod_exit;
|
|
}
|
|
|
|
/* reset phy for connection */
|
|
usbhs_platform_call(priv, phy_reset, pdev);
|
|
|
|
/* power control */
|
|
pm_runtime_enable(dev);
|
|
if (!usbhs_get_dparam(priv, runtime_pwctrl)) {
|
|
usbhsc_power_ctrl(priv, 1);
|
|
usbhs_mod_autonomy_mode(priv);
|
|
} else {
|
|
usbhs_mod_non_autonomy_mode(priv);
|
|
}
|
|
|
|
/*
|
|
* manual call notify_hotplug for cold plug
|
|
*/
|
|
usbhsc_schedule_notify_hotplug(pdev);
|
|
|
|
dev_info(dev, "probed\n");
|
|
|
|
return ret;
|
|
|
|
probe_end_mod_exit:
|
|
usbhsc_clk_put(priv);
|
|
probe_fail_clks:
|
|
reset_control_assert(priv->rsts);
|
|
probe_fail_rst:
|
|
usbhs_mod_remove(priv);
|
|
probe_end_fifo_exit:
|
|
usbhs_fifo_remove(priv);
|
|
probe_end_pipe_exit:
|
|
usbhs_pipe_remove(priv);
|
|
|
|
dev_info(dev, "probe failed (%d)\n", ret);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int usbhs_remove(struct platform_device *pdev)
|
|
{
|
|
struct usbhs_priv *priv = usbhs_pdev_to_priv(pdev);
|
|
|
|
dev_dbg(&pdev->dev, "usb remove\n");
|
|
|
|
/* power off */
|
|
if (!usbhs_get_dparam(priv, runtime_pwctrl))
|
|
usbhsc_power_ctrl(priv, 0);
|
|
|
|
pm_runtime_disable(&pdev->dev);
|
|
|
|
usbhs_platform_call(priv, hardware_exit, pdev);
|
|
usbhsc_clk_put(priv);
|
|
reset_control_assert(priv->rsts);
|
|
usbhs_mod_remove(priv);
|
|
usbhs_fifo_remove(priv);
|
|
usbhs_pipe_remove(priv);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static __maybe_unused int usbhsc_suspend(struct device *dev)
|
|
{
|
|
struct usbhs_priv *priv = dev_get_drvdata(dev);
|
|
struct usbhs_mod *mod = usbhs_mod_get_current(priv);
|
|
|
|
if (mod) {
|
|
usbhs_mod_call(priv, stop, priv);
|
|
usbhs_mod_change(priv, -1);
|
|
}
|
|
|
|
if (mod || !usbhs_get_dparam(priv, runtime_pwctrl))
|
|
usbhsc_power_ctrl(priv, 0);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static __maybe_unused int usbhsc_resume(struct device *dev)
|
|
{
|
|
struct usbhs_priv *priv = dev_get_drvdata(dev);
|
|
struct platform_device *pdev = usbhs_priv_to_pdev(priv);
|
|
|
|
if (!usbhs_get_dparam(priv, runtime_pwctrl)) {
|
|
usbhsc_power_ctrl(priv, 1);
|
|
usbhs_mod_autonomy_mode(priv);
|
|
}
|
|
|
|
usbhs_platform_call(priv, phy_reset, pdev);
|
|
|
|
usbhsc_schedule_notify_hotplug(pdev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static SIMPLE_DEV_PM_OPS(usbhsc_pm_ops, usbhsc_suspend, usbhsc_resume);
|
|
|
|
static struct platform_driver renesas_usbhs_driver = {
|
|
.driver = {
|
|
.name = "renesas_usbhs",
|
|
.pm = &usbhsc_pm_ops,
|
|
.of_match_table = of_match_ptr(usbhs_of_match),
|
|
},
|
|
.probe = usbhs_probe,
|
|
.remove = usbhs_remove,
|
|
};
|
|
|
|
module_platform_driver(renesas_usbhs_driver);
|
|
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_DESCRIPTION("Renesas USB driver");
|
|
MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");
|