Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756563Ab3HLNH0 (ORCPT ); Mon, 12 Aug 2013 09:07:26 -0400 Received: from hqemgate16.nvidia.com ([216.228.121.65]:14739 "EHLO hqemgate16.nvidia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756526Ab3HLNHT (ORCPT ); Mon, 12 Aug 2013 09:07:19 -0400 X-PGP-Universal: processed; by hqnvupgp07.nvidia.com on Mon, 12 Aug 2013 06:07:18 -0700 From: Tuomas Tynkkynen To: CC: , , , , , , Tuomas Tynkkynen Subject: [PATCH v3 6/6] usb: host: tegra: Tegra30 support Date: Mon, 12 Aug 2013 16:06:54 +0300 Message-ID: <1376312814-18992-7-git-send-email-ttynkkynen@nvidia.com> X-Mailer: git-send-email 1.8.1.5 In-Reply-To: <1376312814-18992-1-git-send-email-ttynkkynen@nvidia.com> References: <1376312814-18992-1-git-send-email-ttynkkynen@nvidia.com> X-NVConfidentiality: public MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3387 Lines: 104 The Tegra30 EHCI controller is mostly compatible with the Tegra20 controller, except Tegra30 includes the HOSTPC register extension. The has_hostpc capability bit must be set in the ehci_hcd structure if the controller has such extensions. The new tegra_ehci_soc_config structure is added to describe the differences between the SoCs. Signed-off-by: Tuomas Tynkkynen Tested-by: Stephen Warren Reviewed-by: Stephen Warren --- v3: Removed useless cast drivers/usb/host/ehci-tegra.c | 34 +++++++++++++++++++++++++++++----- 1 file changed, 29 insertions(+), 5 deletions(-) diff --git a/drivers/usb/host/ehci-tegra.c b/drivers/usb/host/ehci-tegra.c index db8031f..78fa76d 100644 --- a/drivers/usb/host/ehci-tegra.c +++ b/drivers/usb/host/ehci-tegra.c @@ -25,6 +25,7 @@ #include #include #include +#include #include #include #include @@ -50,6 +51,10 @@ static struct hc_driver __read_mostly tegra_ehci_hc_driver; +struct tegra_ehci_soc_config { + bool has_hostpc; +}; + static int (*orig_hub_control)(struct usb_hcd *hcd, u16 typeReq, u16 wValue, u16 wIndex, char *buf, u16 wLength); @@ -320,8 +325,24 @@ static void tegra_ehci_unmap_urb_for_dma(struct usb_hcd *hcd, struct urb *urb) free_dma_aligned_buffer(urb); } +static const struct tegra_ehci_soc_config tegra30_soc_config = { + .has_hostpc = true, +}; + +static const struct tegra_ehci_soc_config tegra20_soc_config = { + .has_hostpc = false, +}; + +static struct of_device_id tegra_ehci_of_match[] = { + { .compatible = "nvidia,tegra30-ehci", .data = &tegra30_soc_config }, + { .compatible = "nvidia,tegra20-ehci", .data = &tegra20_soc_config }, + { }, +}; + static int tegra_ehci_probe(struct platform_device *pdev) { + const struct of_device_id *match; + const struct tegra_ehci_soc_config *soc_config; struct resource *res; struct usb_hcd *hcd; struct ehci_hcd *ehci; @@ -330,6 +351,13 @@ static int tegra_ehci_probe(struct platform_device *pdev) int irq; struct usb_phy *u_phy; + match = of_match_device(tegra_ehci_of_match, &pdev->dev); + if (!match) { + dev_err(&pdev->dev, "Error: No device match found\n"); + return -ENODEV; + } + soc_config = match->data; + /* Right now device-tree probed devices don't get dma_mask set. * Since shared usb code relies on it, set it here for now. * Once we have dma capability bindings this can go away. @@ -391,6 +419,7 @@ static int tegra_ehci_probe(struct platform_device *pdev) goto cleanup_clk_en; } ehci->caps = hcd->regs + 0x100; + ehci->has_hostpc = soc_config->has_hostpc; err = usb_phy_init(hcd->phy); if (err) { @@ -468,11 +497,6 @@ static void tegra_ehci_hcd_shutdown(struct platform_device *pdev) hcd->driver->shutdown(hcd); } -static struct of_device_id tegra_ehci_of_match[] = { - { .compatible = "nvidia,tegra20-ehci", }, - { }, -}; - static struct platform_driver tegra_ehci_driver = { .probe = tegra_ehci_probe, .remove = tegra_ehci_remove, -- 1.8.1.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/