diff options
Diffstat (limited to 'drivers/usb/musb/musb_dsps.c')
| -rw-r--r-- | drivers/usb/musb/musb_dsps.c | 61 |
1 files changed, 40 insertions, 21 deletions
diff --git a/drivers/usb/musb/musb_dsps.c b/drivers/usb/musb/musb_dsps.c index 4ffbaace7913..4047cbb91bac 100644 --- a/drivers/usb/musb/musb_dsps.c +++ b/drivers/usb/musb/musb_dsps.c @@ -44,6 +44,7 @@ #include <linux/of_device.h> #include <linux/of_address.h> #include <linux/of_irq.h> +#include <linux/usb/of.h> #include "musb_core.h" @@ -230,6 +231,8 @@ static void dsps_musb_try_idle(struct musb *musb, unsigned long timeout) glue->last_timer = jiffies; return; } + if (musb->port_mode == MUSB_PORT_MODE_HOST) + return; if (time_after(glue->last_timer, timeout) && timer_pending(&glue->timer)) { @@ -313,7 +316,6 @@ static irqreturn_t dsps_interrupt(int irq, void *hci) jiffies + wrp->poll_seconds * HZ); WARNING("VBUS error workaround (delay coming)\n"); } else if (drvvbus) { - musb->is_active = 1; MUSB_HST_MODE(musb); musb->xceiv->otg->default_a = 1; musb->xceiv->state = OTG_STATE_A_WAIT_VRISE; @@ -361,8 +363,8 @@ static int dsps_musb_init(struct musb *musb) return -EINVAL; reg_base = devm_ioremap_resource(dev, r); - if (!musb->ctrl_base) - return -EINVAL; + if (IS_ERR(reg_base)) + return PTR_ERR(reg_base); musb->ctrl_base = reg_base; /* NOP driver needs change if supporting dual instance */ @@ -425,35 +427,51 @@ static int get_int_prop(struct device_node *dn, const char *s) return val; } +static int get_musb_port_mode(struct device *dev) +{ + enum usb_dr_mode mode; + + mode = of_usb_get_dr_mode(dev->of_node); + switch (mode) { + case USB_DR_MODE_HOST: + return MUSB_PORT_MODE_HOST; + + case USB_DR_MODE_PERIPHERAL: + return MUSB_PORT_MODE_GADGET; + + case USB_DR_MODE_UNKNOWN: + case USB_DR_MODE_OTG: + default: + return MUSB_PORT_MODE_DUAL_ROLE; + }; +} + static int dsps_create_musb_pdev(struct dsps_glue *glue, struct platform_device *parent) { struct musb_hdrc_platform_data pdata; struct resource resources[2]; + struct resource *res; struct device *dev = &parent->dev; struct musb_hdrc_config *config; struct platform_device *musb; struct device_node *dn = parent->dev.of_node; - struct device_node *child_node; int ret; - child_node = of_get_child_by_name(dn, "usb"); - if (!child_node) - return -EINVAL; - memset(resources, 0, sizeof(resources)); - ret = of_address_to_resource(child_node, 0, &resources[0]); - if (ret) { + res = platform_get_resource_byname(parent, IORESOURCE_MEM, "mc"); + if (!res) { dev_err(dev, "failed to get memory.\n"); - return ret; + return -EINVAL; } + resources[0] = *res; - ret = of_irq_to_resource(child_node, 0, &resources[1]); - if (ret == 0) { + res = platform_get_resource_byname(parent, IORESOURCE_IRQ, "mc"); + if (!res) { dev_err(dev, "failed to get irq.\n"); - ret = -EINVAL; - return ret; + return -EINVAL; } + resources[1] = *res; /* allocate the child platform device */ musb = platform_device_alloc("musb-hdrc", PLATFORM_DEVID_AUTO); @@ -465,7 +483,7 @@ static int dsps_create_musb_pdev(struct dsps_glue *glue, musb->dev.parent = dev; musb->dev.dma_mask = &musb_dmamask; musb->dev.coherent_dma_mask = musb_dmamask; - musb->dev.of_node = of_node_get(child_node); + musb->dev.of_node = of_node_get(dn); glue->musb = musb; @@ -485,11 +503,12 @@ static int dsps_create_musb_pdev(struct dsps_glue *glue, pdata.config = config; pdata.platform_ops = &dsps_ops; - config->num_eps = get_int_prop(child_node, "num-eps"); - config->ram_bits = get_int_prop(child_node, "ram-bits"); - pdata.mode = get_int_prop(child_node, "port-mode"); - pdata.power = get_int_prop(child_node, "power"); - config->multipoint = of_property_read_bool(child_node, "multipoint"); + config->num_eps = get_int_prop(dn, "mentor,num-eps"); + config->ram_bits = get_int_prop(dn, "mentor,ram-bits"); + 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; + config->multipoint = of_property_read_bool(dn, "mentor,multipoint"); ret = platform_device_add_data(musb, &pdata, sizeof(pdata)); if (ret) { |