From patchwork Fri Jan 18 12:17:21 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Roger Quadros X-Patchwork-Id: 2001831 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork2.kernel.org Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) by patchwork2.kernel.org (Postfix) with ESMTP id DF851DF280 for ; Fri, 18 Jan 2013 12:27:32 +0000 (UTC) Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.76 #1 (Red Hat Linux)) id 1TwB0F-0003Ra-DV; Fri, 18 Jan 2013 12:24:59 +0000 Received: from comal.ext.ti.com ([198.47.26.152]) by merlin.infradead.org with esmtps (Exim 4.76 #1 (Red Hat Linux)) id 1TwAtn-0006LD-V1 for linux-arm-kernel@lists.infradead.org; Fri, 18 Jan 2013 12:18:21 +0000 Received: from dlelxv30.itg.ti.com ([172.17.2.17]) by comal.ext.ti.com (8.13.7/8.13.7) with ESMTP id r0ICIFlQ025580; Fri, 18 Jan 2013 06:18:15 -0600 Received: from DLEE74.ent.ti.com (dlee74.ent.ti.com [157.170.170.8]) by dlelxv30.itg.ti.com (8.13.8/8.13.8) with ESMTP id r0ICIFsK003758; Fri, 18 Jan 2013 06:18:15 -0600 Received: from dlelxv22.itg.ti.com (172.17.1.197) by DLEE74.ent.ti.com (157.170.170.8) with Microsoft SMTP Server id 14.1.323.3; Fri, 18 Jan 2013 06:18:15 -0600 Received: from rockdesk.itg.ti.com (h0-82.vpn.ti.com [172.24.0.82]) by dlelxv22.itg.ti.com (8.13.8/8.13.8) with ESMTP id r0ICHPsB027831; Fri, 18 Jan 2013 06:18:13 -0600 From: Roger Quadros To: , , Subject: [PATCH v8 18/22] mfd: omap-usb-host: clean up omap_usbhs_init() Date: Fri, 18 Jan 2013 14:17:21 +0200 Message-ID: <1358511445-26656-19-git-send-email-rogerq@ti.com> X-Mailer: git-send-email 1.7.4.1 In-Reply-To: <1358511445-26656-1-git-send-email-rogerq@ti.com> References: <1358511445-26656-1-git-send-email-rogerq@ti.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20130118_071820_129257_E94D16DC X-CRM114-Status: GOOD ( 14.27 ) X-Spam-Score: -4.6 (----) X-Spam-Report: SpamAssassin version 3.3.2 on merlin.infradead.org summary: Content analysis details: (-4.6 points) pts rule name description ---- ---------------------- -------------------------------------------------- -5.0 RCVD_IN_DNSWL_HI RBL: Sender listed at http://www.dnswl.org/, high trust [198.47.26.152 listed in list.dnswl.org] 3.0 KHOP_BIG_TO_CC Sent to 10+ recipients instaed of Bcc or a list -0.0 SPF_PASS SPF: sender matches SPF record -0.7 RP_MATCHES_RCVD Envelope sender domain matches handover relay domain -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] Cc: linux@arm.linux.org.uk, sshtylyov@mvista.com, linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, kishon@ti.com, linux-arm-kernel@lists.infradead.org, bjorn@mork.no, rogerq@ti.com X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: linux-arm-kernel-bounces@lists.infradead.org Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org We split initializing revision 1 and revision 2 into different functions. Initialization is now done dynamically so that only the number of ports available on the system are initialized. Signed-off-by: Roger Quadros Reviewed-by: Felipe Balbi --- drivers/mfd/omap-usb-host.c | 129 +++++++++++++++++++++++++++---------------- 1 files changed, 81 insertions(+), 48 deletions(-) diff --git a/drivers/mfd/omap-usb-host.c b/drivers/mfd/omap-usb-host.c index fcace6f..9dea92c 100644 --- a/drivers/mfd/omap-usb-host.c +++ b/drivers/mfd/omap-usb-host.c @@ -358,6 +358,75 @@ static int usbhs_runtime_suspend(struct device *dev) return 0; } +static unsigned omap_usbhs_rev1_hostconfig(struct usbhs_hcd_omap *omap, + unsigned reg) +{ + struct usbhs_omap_platform_data *pdata = omap->pdata; + int i; + + for (i = 0; i < omap->nports; i++) { + switch (pdata->port_mode[i]) { + case OMAP_USBHS_PORT_MODE_UNUSED: + reg &= ~(OMAP_UHH_HOSTCONFIG_P1_CONNECT_STATUS << i); + break; + case OMAP_EHCI_PORT_MODE_PHY: + if (pdata->single_ulpi_bypass) + break; + + if (i == 0) + reg &= ~OMAP_UHH_HOSTCONFIG_ULPI_P1_BYPASS; + else + reg &= ~(OMAP_UHH_HOSTCONFIG_ULPI_P2_BYPASS + << (i-1)); + break; + default: + if (pdata->single_ulpi_bypass) + break; + + if (i == 0) + reg |= OMAP_UHH_HOSTCONFIG_ULPI_P1_BYPASS; + else + reg |= OMAP_UHH_HOSTCONFIG_ULPI_P2_BYPASS + << (i-1); + break; + } + } + + if (pdata->single_ulpi_bypass) { + /* bypass ULPI only if none of the ports use PHY mode */ + reg |= OMAP_UHH_HOSTCONFIG_ULPI_BYPASS; + + for (i = 0; i < omap->nports; i++) { + if (is_ehci_phy_mode(pdata->port_mode[i])) { + reg &= OMAP_UHH_HOSTCONFIG_ULPI_BYPASS; + break; + } + } + } + + return reg; +} + +static unsigned omap_usbhs_rev2_hostconfig(struct usbhs_hcd_omap *omap, + unsigned reg) +{ + struct usbhs_omap_platform_data *pdata = omap->pdata; + int i; + + for (i = 0; i < omap->nports; i++) { + /* Clear port mode fields for PHY mode */ + reg &= ~(OMAP4_P1_MODE_CLEAR << 2 * i); + + if (is_ehci_tll_mode(pdata->port_mode[i]) || + (is_ohci_port(pdata->port_mode[i]))) + reg |= OMAP4_P1_MODE_TLL << 2 * i; + else if (is_ehci_hsic_mode(pdata->port_mode[i])) + reg |= OMAP4_P1_MODE_HSIC << 2 * i; + } + + return reg; +} + static void omap_usbhs_init(struct device *dev) { struct usbhs_hcd_omap *omap = dev_get_drvdata(dev); @@ -389,54 +458,18 @@ static void omap_usbhs_init(struct device *dev) reg |= OMAP4_UHH_HOSTCONFIG_APP_START_CLK; reg &= ~OMAP_UHH_HOSTCONFIG_INCRX_ALIGN_EN; - if (is_omap_usbhs_rev1(omap)) { - if (pdata->port_mode[0] == OMAP_USBHS_PORT_MODE_UNUSED) - reg &= ~OMAP_UHH_HOSTCONFIG_P1_CONNECT_STATUS; - if (pdata->port_mode[1] == OMAP_USBHS_PORT_MODE_UNUSED) - reg &= ~OMAP_UHH_HOSTCONFIG_P2_CONNECT_STATUS; - if (pdata->port_mode[2] == OMAP_USBHS_PORT_MODE_UNUSED) - reg &= ~OMAP_UHH_HOSTCONFIG_P3_CONNECT_STATUS; - - /* Bypass the TLL module for PHY mode operation */ - if (pdata->single_ulpi_bypass) { - dev_dbg(dev, "OMAP3 ES version <= ES2.1\n"); - if (is_ehci_phy_mode(pdata->port_mode[0]) || - is_ehci_phy_mode(pdata->port_mode[1]) || - is_ehci_phy_mode(pdata->port_mode[2])) - reg &= ~OMAP_UHH_HOSTCONFIG_ULPI_BYPASS; - else - reg |= OMAP_UHH_HOSTCONFIG_ULPI_BYPASS; - } else { - dev_dbg(dev, "OMAP3 ES version > ES2.1\n"); - if (is_ehci_phy_mode(pdata->port_mode[0])) - reg &= ~OMAP_UHH_HOSTCONFIG_ULPI_P1_BYPASS; - else - reg |= OMAP_UHH_HOSTCONFIG_ULPI_P1_BYPASS; - if (is_ehci_phy_mode(pdata->port_mode[1])) - reg &= ~OMAP_UHH_HOSTCONFIG_ULPI_P2_BYPASS; - else - reg |= OMAP_UHH_HOSTCONFIG_ULPI_P2_BYPASS; - if (is_ehci_phy_mode(pdata->port_mode[2])) - reg &= ~OMAP_UHH_HOSTCONFIG_ULPI_P3_BYPASS; - else - reg |= OMAP_UHH_HOSTCONFIG_ULPI_P3_BYPASS; - } - } else if (is_omap_usbhs_rev2(omap)) { - /* Clear port mode fields for PHY mode*/ - reg &= ~OMAP4_P1_MODE_CLEAR; - reg &= ~OMAP4_P2_MODE_CLEAR; - - if (is_ehci_tll_mode(pdata->port_mode[0]) || - (is_ohci_port(pdata->port_mode[0]))) - reg |= OMAP4_P1_MODE_TLL; - else if (is_ehci_hsic_mode(pdata->port_mode[0])) - reg |= OMAP4_P1_MODE_HSIC; - - if (is_ehci_tll_mode(pdata->port_mode[1]) || - (is_ohci_port(pdata->port_mode[1]))) - reg |= OMAP4_P2_MODE_TLL; - else if (is_ehci_hsic_mode(pdata->port_mode[1])) - reg |= OMAP4_P2_MODE_HSIC; + switch (omap->usbhs_rev) { + case OMAP_USBHS_REV1: + omap_usbhs_rev1_hostconfig(omap, reg); + break; + + case OMAP_USBHS_REV2: + omap_usbhs_rev2_hostconfig(omap, reg); + break; + + default: /* newer revisions */ + omap_usbhs_rev2_hostconfig(omap, reg); + break; } usbhs_write(omap->uhh_base, OMAP_UHH_HOSTCONFIG, reg);