[PATCH v4 14/23] mfd: omap-usb-host: override number of ports from platform data
From: Roger Quadros <hidden>
Date: 2012-12-10 10:21:35
Also in:
linux-omap, lkml
Subsystem:
arm port, multifunction devices (mfd), omap usb support, omap2+ support, the rest · Maintainers:
Russell King, 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> --- arch/arm/mach-omap2/usb-host.c | 1 + arch/arm/mach-omap2/usb.h | 1 + drivers/mfd/omap-usb-host.c | 34 +++++++++++++++++++------------ include/linux/platform_data/usb-omap.h | 1 + 4 files changed, 24 insertions(+), 13 deletions(-)
diff --git a/arch/arm/mach-omap2/usb-host.c b/arch/arm/mach-omap2/usb-host.c
index 2e44e8a..ee8c473 100644
--- a/arch/arm/mach-omap2/usb-host.c
+++ b/arch/arm/mach-omap2/usb-host.c@@ -504,6 +504,7 @@ void __init usbhs_init(const struct usbhs_omap_board_data *pdata) ohci_data.es2_compatibility = pdata->es2_compatibility; usbhs_data.ehci_data = &ehci_data; usbhs_data.ohci_data = &ohci_data; + usbhs_data.nports = pdata->nports; if (cpu_is_omap34xx()) { setup_ehci_io_mux(pdata->port_mode);
diff --git a/arch/arm/mach-omap2/usb.h b/arch/arm/mach-omap2/usb.h
index 9b986ea..7dc0f04 100644
--- a/arch/arm/mach-omap2/usb.h
+++ b/arch/arm/mach-omap2/usb.h@@ -54,6 +54,7 @@ #define USBPHY_DATA_POLARITY (1 << 23) struct usbhs_omap_board_data { + int nports; enum usbhs_omap_port_mode port_mode[OMAP3_HS_USB_PORTS]; /* have to be valid if phy_reset is true and portx is in phy mode */
diff --git a/drivers/mfd/omap-usb-host.c b/drivers/mfd/omap-usb-host.c
index 9c23a08..714b2f1 100644
--- a/drivers/mfd/omap-usb-host.c
+++ b/drivers/mfd/omap-usb-host.c@@ -498,19 +498,27 @@ static int __devinit 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 ef65b67..57707c7 100644
--- a/include/linux/platform_data/usb-omap.h
+++ b/include/linux/platform_data/usb-omap.h@@ -55,6 +55,7 @@ struct ohci_hcd_omap_platform_data { }; struct usbhs_omap_platform_data { + int nports; enum usbhs_omap_port_mode port_mode[OMAP3_HS_USB_PORTS]; struct ehci_hcd_omap_platform_data *ehci_data;
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1.7.4.1