[PATCH v7 13/22] mfd: omap-usb-host: override number of ports from platform data
From: Roger Quadros <hidden>
Date: 2013-01-17 11:38:47
Also in:
lkml
Subsystem:
multifunction devices (mfd), omap2+ support, the rest · Maintainers:
Lee Jones, Aaro Koskinen, Andreas Kemnade, Kevin Hilman, Roger Quadros, Tony Lindgren, Linus Torvalds
Both OMAP4 and 5 exhibit the same revision ID in the REVISION register but they have different number of ports i.e. 2 and 3 respectively. So we can't rely on REVISION register for number of ports on OMAP5 and depend on platform data (or device tree) instead. Signed-off-by: Roger Quadros <redacted> --- drivers/mfd/omap-usb-host.c | 34 +++++++++++++++++++------------ include/linux/platform_data/usb-omap.h | 1 + 2 files changed, 22 insertions(+), 13 deletions(-)
diff --git a/drivers/mfd/omap-usb-host.c b/drivers/mfd/omap-usb-host.c
index 26319ca..779588b 100644
--- a/drivers/mfd/omap-usb-host.c
+++ b/drivers/mfd/omap-usb-host.c@@ -493,19 +493,27 @@ static int usbhs_omap_probe(struct platform_device *pdev) */ pm_runtime_put_sync(dev); - switch (omap->usbhs_rev) { - case OMAP_USBHS_REV1: - omap->nports = 3; - break; - case OMAP_USBHS_REV2: - omap->nports = 2; - break; - default: - omap->nports = OMAP3_HS_USB_PORTS; - dev_dbg(dev, - "USB HOST Rev : 0x%d not recognized, assuming %d ports\n", - omap->usbhs_rev, omap->nports); - break; + /* + * If platform data contains nports then use that + * else make out number of ports from USBHS revision + */ + if (pdata->nports) { + omap->nports = pdata->nports; + } else { + switch (omap->usbhs_rev) { + case OMAP_USBHS_REV1: + omap->nports = 3; + break; + case OMAP_USBHS_REV2: + omap->nports = 2; + break; + default: + omap->nports = OMAP3_HS_USB_PORTS; + dev_dbg(dev, + "USB HOST Rev:0x%d not recognized, assuming %d ports\n", + omap->usbhs_rev, omap->nports); + break; + } } for (i = 0; i < omap->nports; i++)
diff --git a/include/linux/platform_data/usb-omap.h b/include/linux/platform_data/usb-omap.h
index 04c7537..925a4a7 100644
--- a/include/linux/platform_data/usb-omap.h
+++ b/include/linux/platform_data/usb-omap.h@@ -39,6 +39,7 @@ enum usbhs_omap_port_mode { }; struct usbhs_omap_platform_data { + int nports; enum usbhs_omap_port_mode port_mode[OMAP3_HS_USB_PORTS]; int reset_gpio_port[OMAP3_HS_USB_PORTS]; struct regulator *regulator[OMAP3_HS_USB_PORTS];
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1.7.4.1