diff options
Diffstat (limited to 'drivers/usb/musb')
| -rw-r--r-- | drivers/usb/musb/musb_core.c | 25 | ||||
| -rw-r--r-- | drivers/usb/musb/musb_dsps.c | 117 | ||||
| -rw-r--r-- | drivers/usb/musb/musb_gadget.c | 6 | ||||
| -rw-r--r-- | drivers/usb/musb/musb_host.c | 9 | ||||
| -rw-r--r-- | drivers/usb/musb/musb_host.h | 4 | ||||
| -rw-r--r-- | drivers/usb/musb/musb_virthub.c | 4 | ||||
| -rw-r--r-- | drivers/usb/musb/ux500_dma.c | 4 |
7 files changed, 158 insertions, 11 deletions
diff --git a/drivers/usb/musb/musb_core.c b/drivers/usb/musb/musb_core.c index 4d4499b80449..1ecdb94f3812 100644 --- a/drivers/usb/musb/musb_core.c +++ b/drivers/usb/musb/musb_core.c @@ -1940,17 +1940,26 @@ musb_init_controller(struct device *dev, int nIrq, void __iomem *ctrl) switch (musb->port_mode) { case MUSB_PORT_MODE_HOST: status = musb_host_setup(musb, plat->power); + if (status < 0) + goto fail3; + status = musb_platform_set_mode(musb, MUSB_HOST); break; case MUSB_PORT_MODE_GADGET: status = musb_gadget_setup(musb); + if (status < 0) + goto fail3; + status = musb_platform_set_mode(musb, MUSB_PERIPHERAL); break; case MUSB_PORT_MODE_DUAL_ROLE: status = musb_host_setup(musb, plat->power); if (status < 0) goto fail3; status = musb_gadget_setup(musb); - if (status) + if (status) { musb_host_cleanup(musb); + goto fail3; + } + status = musb_platform_set_mode(musb, MUSB_OTG); break; default: dev_err(dev, "unsupported port mode %d\n", musb->port_mode); @@ -2216,16 +2225,28 @@ static int musb_suspend(struct device *dev) */ } + musb_save_context(musb); + spin_unlock_irqrestore(&musb->lock, flags); return 0; } static int musb_resume_noirq(struct device *dev) { - /* for static cmos like DaVinci, register values were preserved + struct musb *musb = dev_to_musb(dev); + + /* + * For static cmos like DaVinci, register values were preserved * unless for some reason the whole soc powered down or the USB * module got reset through the PSC (vs just being disabled). + * + * For the DSPS glue layer though, a full register restore has to + * be done. As it shouldn't harm other platforms, we do it + * unconditionally. */ + + musb_restore_context(musb); + return 0; } diff --git a/drivers/usb/musb/musb_dsps.c b/drivers/usb/musb/musb_dsps.c index 1901f6fe5807..593d3c962565 100644 --- a/drivers/usb/musb/musb_dsps.c +++ b/drivers/usb/musb/musb_dsps.c @@ -83,6 +83,8 @@ struct dsps_musb_wrapper { u16 coreintr_status; u16 phy_utmi; u16 mode; + u16 tx_mode; + u16 rx_mode; /* bit positions for control */ unsigned reset:5; @@ -106,10 +108,24 @@ struct dsps_musb_wrapper { /* bit positions for mode */ unsigned iddig:5; + unsigned iddig_mux:5; /* miscellaneous stuff */ u8 poll_seconds; }; +/* + * register shadow for suspend + */ +struct dsps_context { + u32 control; + u32 epintr; + u32 coreintr; + u32 phy_utmi; + u32 mode; + u32 tx_mode; + u32 rx_mode; +}; + /** * DSPS glue structure. */ @@ -119,6 +135,8 @@ struct dsps_glue { const struct dsps_musb_wrapper *wrp; /* wrapper register offsets */ struct timer_list timer; /* otg_workaround timer */ unsigned long last_timer; /* last timer data for each instance */ + + struct dsps_context context; }; static void dsps_musb_try_idle(struct musb *musb, unsigned long timeout) @@ -341,8 +359,9 @@ static irqreturn_t dsps_interrupt(int irq, void *hci) if (musb->int_tx || musb->int_rx || musb->int_usb) ret |= musb_interrupt(musb); - /* Poll for ID change */ - if (musb->xceiv->state == OTG_STATE_B_IDLE) + /* Poll for ID change in OTG port mode */ + if (musb->xceiv->state == OTG_STATE_B_IDLE && + musb->port_mode == MUSB_PORT_MODE_DUAL_ROLE) mod_timer(&glue->timer, jiffies + wrp->poll_seconds * HZ); out: spin_unlock_irqrestore(&musb->lock, flags); @@ -406,6 +425,54 @@ static int dsps_musb_exit(struct musb *musb) return 0; } +static int dsps_musb_set_mode(struct musb *musb, u8 mode) +{ + struct device *dev = musb->controller; + struct dsps_glue *glue = dev_get_drvdata(dev->parent); + const struct dsps_musb_wrapper *wrp = glue->wrp; + void __iomem *ctrl_base = musb->ctrl_base; + void __iomem *base = musb->mregs; + u32 reg; + + reg = dsps_readl(base, wrp->mode); + + switch (mode) { + case MUSB_HOST: + reg &= ~(1 << wrp->iddig); + + /* + * if we're setting mode to host-only or device-only, we're + * going to ignore whatever the PHY sends us and just force + * ID pin status by SW + */ + reg |= (1 << wrp->iddig_mux); + + dsps_writel(base, wrp->mode, reg); + dsps_writel(ctrl_base, wrp->phy_utmi, 0x02); + break; + case MUSB_PERIPHERAL: + reg |= (1 << wrp->iddig); + + /* + * if we're setting mode to host-only or device-only, we're + * going to ignore whatever the PHY sends us and just force + * ID pin status by SW + */ + reg |= (1 << wrp->iddig_mux); + + dsps_writel(base, wrp->mode, reg); + break; + case MUSB_OTG: + dsps_writel(base, wrp->phy_utmi, 0x02); + break; + default: + dev_err(glue->dev, "unsupported mode %d\n", mode); + return -EINVAL; + } + + return 0; +} + static struct musb_platform_ops dsps_ops = { .init = dsps_musb_init, .exit = dsps_musb_exit, @@ -414,6 +481,7 @@ static struct musb_platform_ops dsps_ops = { .disable = dsps_musb_disable, .try_idle = dsps_musb_try_idle, + .set_mode = dsps_musb_set_mode, }; static u64 musb_dmamask = DMA_BIT_MASK(32); @@ -507,6 +575,7 @@ static int dsps_create_musb_pdev(struct dsps_glue *glue, config->num_eps = get_int_prop(dn, "mentor,num-eps"); config->ram_bits = get_int_prop(dn, "mentor,ram-bits"); + config->host_port_deassert_reset_at_resume = 1; pdata.mode = get_musb_port_mode(dev); /* DT keeps this entry in mA, musb expects it as per USB spec */ pdata.power = get_int_prop(dn, "mentor,power") / 2; @@ -605,9 +674,12 @@ static const struct dsps_musb_wrapper am33xx_driver_data = { .coreintr_status = 0x34, .phy_utmi = 0xe0, .mode = 0xe8, + .tx_mode = 0x70, + .rx_mode = 0x74, .reset = 0, .otg_disable = 21, .iddig = 8, + .iddig_mux = 7, .usb_shift = 0, .usb_mask = 0x1ff, .usb_bitmap = (0x1ff << 0), @@ -628,11 +700,52 @@ static const struct of_device_id musb_dsps_of_match[] = { }; MODULE_DEVICE_TABLE(of, musb_dsps_of_match); +#ifdef CONFIG_PM +static int dsps_suspend(struct device *dev) +{ + struct dsps_glue *glue = dev_get_drvdata(dev); + const struct dsps_musb_wrapper *wrp = glue->wrp; + struct musb *musb = platform_get_drvdata(glue->musb); + void __iomem *mbase = musb->ctrl_base; + + glue->context.control = dsps_readl(mbase, wrp->control); + glue->context.epintr = dsps_readl(mbase, wrp->epintr_set); + glue->context.coreintr = dsps_readl(mbase, wrp->coreintr_set); + glue->context.phy_utmi = dsps_readl(mbase, wrp->phy_utmi); + glue->context.mode = dsps_readl(mbase, wrp->mode); + glue->context.tx_mode = dsps_readl(mbase, wrp->tx_mode); + glue->context.rx_mode = dsps_readl(mbase, wrp->rx_mode); + + return 0; +} + +static int dsps_resume(struct device *dev) +{ + struct dsps_glue *glue = dev_get_drvdata(dev); + const struct dsps_musb_wrapper *wrp = glue->wrp; + struct musb *musb = platform_get_drvdata(glue->musb); + void __iomem *mbase = musb->ctrl_base; + + dsps_writel(mbase, wrp->control, glue->context.control); + dsps_writel(mbase, wrp->epintr_set, glue->context.epintr); + dsps_writel(mbase, wrp->coreintr_set, glue->context.coreintr); + dsps_writel(mbase, wrp->phy_utmi, glue->context.phy_utmi); + dsps_writel(mbase, wrp->mode, glue->context.mode); + dsps_writel(mbase, wrp->tx_mode, glue->context.tx_mode); + dsps_writel(mbase, wrp->rx_mode, glue->context.rx_mode); + + return 0; +} +#endif + +static SIMPLE_DEV_PM_OPS(dsps_pm_ops, dsps_suspend, dsps_resume); + static struct platform_driver dsps_usbss_driver = { .probe = dsps_probe, .remove = dsps_remove, .driver = { .name = "musb-dsps", + .pm = &dsps_pm_ops, .of_match_table = musb_dsps_of_match, }, }; diff --git a/drivers/usb/musb/musb_gadget.c b/drivers/usb/musb/musb_gadget.c index 32fb057c03f5..c410a7ff150b 100644 --- a/drivers/usb/musb/musb_gadget.c +++ b/drivers/usb/musb/musb_gadget.c @@ -1727,14 +1727,14 @@ init_peripheral_ep(struct musb *musb, struct musb_ep *ep, u8 epnum, int is_in) ep->end_point.name = ep->name; INIT_LIST_HEAD(&ep->end_point.ep_list); if (!epnum) { - ep->end_point.maxpacket = 64; + usb_ep_set_maxpacket_limit(&ep->end_point, 64); ep->end_point.ops = &musb_g_ep0_ops; musb->g.ep0 = &ep->end_point; } else { if (is_in) - ep->end_point.maxpacket = hw_ep->max_packet_sz_tx; + usb_ep_set_maxpacket_limit(&ep->end_point, hw_ep->max_packet_sz_tx); else - ep->end_point.maxpacket = hw_ep->max_packet_sz_rx; + usb_ep_set_maxpacket_limit(&ep->end_point, hw_ep->max_packet_sz_rx); ep->end_point.ops = &musb_ep_ops; list_add_tail(&ep->end_point.ep_list, &musb->g.ep_list); } diff --git a/drivers/usb/musb/musb_host.c b/drivers/usb/musb/musb_host.c index 6582a20bec05..822413899260 100644 --- a/drivers/usb/musb/musb_host.c +++ b/drivers/usb/musb/musb_host.c @@ -2433,6 +2433,8 @@ static int musb_bus_suspend(struct usb_hcd *hcd) struct musb *musb = hcd_to_musb(hcd); u8 devctl; + musb_port_suspend(musb, true); + if (!is_host_active(musb)) return 0; @@ -2462,7 +2464,12 @@ static int musb_bus_suspend(struct usb_hcd *hcd) static int musb_bus_resume(struct usb_hcd *hcd) { - /* resuming child port does the work */ + struct musb *musb = hcd_to_musb(hcd); + + if (musb->config && + musb->config->host_port_deassert_reset_at_resume) + musb_port_reset(musb, false); + return 0; } diff --git a/drivers/usb/musb/musb_host.h b/drivers/usb/musb/musb_host.h index 960d73570b2f..7436c24af0ff 100644 --- a/drivers/usb/musb/musb_host.h +++ b/drivers/usb/musb/musb_host.h @@ -92,6 +92,8 @@ extern void musb_host_rx(struct musb *, u8); extern void musb_root_disconnect(struct musb *musb); extern void musb_host_resume_root_hub(struct musb *musb); extern void musb_host_poke_root_hub(struct musb *musb); +extern void musb_port_suspend(struct musb *musb, bool do_suspend); +extern void musb_port_reset(struct musb *musb, bool do_reset); #else static inline struct musb *hcd_to_musb(struct usb_hcd *hcd) { @@ -121,6 +123,8 @@ static inline void musb_root_disconnect(struct musb *musb) {} static inline void musb_host_resume_root_hub(struct musb *musb) {} static inline void musb_host_poll_rh_status(struct musb *musb) {} static inline void musb_host_poke_root_hub(struct musb *musb) {} +static inline void musb_port_suspend(struct musb *musb, bool do_suspend) {} +static inline void musb_port_reset(struct musb *musb) {} #endif struct usb_hcd; diff --git a/drivers/usb/musb/musb_virthub.c b/drivers/usb/musb/musb_virthub.c index 9af6bba5eac9..24e46c0c84b5 100644 --- a/drivers/usb/musb/musb_virthub.c +++ b/drivers/usb/musb/musb_virthub.c @@ -44,7 +44,7 @@ #include "musb_core.h" -static void musb_port_suspend(struct musb *musb, bool do_suspend) +void musb_port_suspend(struct musb *musb, bool do_suspend) { struct usb_otg *otg = musb->xceiv->otg; u8 power; @@ -109,7 +109,7 @@ static void musb_port_suspend(struct musb *musb, bool do_suspend) } } -static void musb_port_reset(struct musb *musb, bool do_reset) +void musb_port_reset(struct musb *musb, bool do_reset) { u8 power; void __iomem *mbase = musb->mregs; diff --git a/drivers/usb/musb/ux500_dma.c b/drivers/usb/musb/ux500_dma.c index 3700e9713258..9aad00f11bd5 100644 --- a/drivers/usb/musb/ux500_dma.c +++ b/drivers/usb/musb/ux500_dma.c @@ -336,7 +336,9 @@ static int ux500_dma_controller_start(struct ux500_dma_controller *controller) data ? data->dma_filter : NULL, - param_array[ch_num]); + param_array ? + param_array[ch_num] : + NULL); if (!ux500_channel->dma_chan) { ERR("Dma pipe allocation error dir=%d ch=%d\n", |