From patchwork Sun Jun 2 22:59:03 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Heiko Stuebner X-Patchwork-Id: 2650161 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork2.kernel.org Received: from casper.infradead.org (casper.infradead.org [85.118.1.10]) by patchwork2.kernel.org (Postfix) with ESMTP id C4AC0DFB78 for ; Sun, 2 Jun 2013 23:02:05 +0000 (UTC) Received: from merlin.infradead.org ([2001:4978:20e::2]) by casper.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1UjHGC-0006c8-ME; Sun, 02 Jun 2013 23:00:26 +0000 Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1UjHFK-0001lE-8O; Sun, 02 Jun 2013 22:59:30 +0000 Received: from gloria.sntech.de ([95.129.55.99]) by merlin.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1UjHFH-0001kL-7y for linux-arm-kernel@lists.infradead.org; Sun, 02 Jun 2013 22:59:28 +0000 Received: from 178-24-182-1-dynip.superkabel.de ([178.24.182.1] helo=marty.localnet) by gloria.sntech.de with esmtpsa (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.72) (envelope-from ) id 1UjHEv-0007UQ-FG; Mon, 03 Jun 2013 00:59:05 +0200 From: Heiko =?utf-8?q?St=C3=BCbner?= To: "linux-arm-kernel@lists.infradead.org" Subject: [PATCH 06/10] mmc: dw_mmc-pltfm: add Rockchip variant Date: Mon, 3 Jun 2013 00:59:03 +0200 User-Agent: KMail/1.13.7 (Linux/3.2.0-3-686-pae; KDE/4.8.4; i686; ; ) References: <201306030055.15413.heiko@sntech.de> In-Reply-To: <201306030055.15413.heiko@sntech.de> MIME-Version: 1.0 Message-Id: <201306030059.03783.heiko@sntech.de> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20130602_185927_430182_BAD36038 X-CRM114-Status: GOOD ( 17.29 ) X-Spam-Score: -2.4 (--) X-Spam-Report: SpamAssassin version 3.3.2 on merlin.infradead.org summary: Content analysis details: (-2.4 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.5 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: Mike Turquette , Arnd Bergmann , Seungwon Jeon , Linus Walleij , linux-mmc@vger.kernel.org, "linux-kernel@vger.kernel.org" , Rob Herring , Jaehoon Chung , Olof Johansson , John Stultz , Grant Likely , Russell King , Thomas Gleixner , Chris Ball , devicetree-discuss@lists.ozlabs.org X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org Cortex-A9 SoCs from Rockchip use a slightly modified variant of dw_mmc controllers that seems to require the SDMMC_CMD_USE_HOLD_REG bit to always be set. There also seem to be no other modifications (additional register etc) present, so to keep the footprint low, add this small variant to the pltfm driver. Signed-off-by: Heiko Stuebner --- drivers/mmc/host/dw_mmc-pltfm.c | 48 +++++++++++++++++++++++++++----------- 1 files changed, 34 insertions(+), 14 deletions(-) diff --git a/drivers/mmc/host/dw_mmc-pltfm.c b/drivers/mmc/host/dw_mmc-pltfm.c index 0048da8..7d041b5 100644 --- a/drivers/mmc/host/dw_mmc-pltfm.c +++ b/drivers/mmc/host/dw_mmc-pltfm.c @@ -24,6 +24,16 @@ #include "dw_mmc.h" + +static void dw_mci_rockchip_prepare_command(struct dw_mci *host, u32 *cmdr) +{ + *cmdr |= SDMMC_CMD_USE_HOLD_REG; +} + +static const struct dw_mci_drv_data rockchip_drv_data = { + .prepare_command = dw_mci_rockchip_prepare_command, +}; + int dw_mci_pltfm_register(struct platform_device *pdev, const struct dw_mci_drv_data *drv_data) { @@ -63,20 +73,6 @@ int dw_mci_pltfm_register(struct platform_device *pdev, } EXPORT_SYMBOL_GPL(dw_mci_pltfm_register); -static int dw_mci_pltfm_probe(struct platform_device *pdev) -{ - return dw_mci_pltfm_register(pdev, NULL); -} - -int dw_mci_pltfm_remove(struct platform_device *pdev) -{ - struct dw_mci *host = platform_get_drvdata(pdev); - - dw_mci_remove(host); - return 0; -} -EXPORT_SYMBOL_GPL(dw_mci_pltfm_remove); - #ifdef CONFIG_PM_SLEEP /* * TODO: we should probably disable the clock to the card in the suspend path. @@ -114,10 +110,34 @@ EXPORT_SYMBOL_GPL(dw_mci_pltfm_pmops); static const struct of_device_id dw_mci_pltfm_match[] = { { .compatible = "snps,dw-mshc", }, + { .compatible = "rockchip,cortex-a9-dw-mshc", + .data = &rockchip_drv_data }, {}, }; MODULE_DEVICE_TABLE(of, dw_mci_pltfm_match); +static int dw_mci_pltfm_probe(struct platform_device *pdev) +{ + const struct dw_mci_drv_data *drv_data = NULL; + const struct of_device_id *match; + + if (pdev->dev.of_node) { + match = of_match_node(dw_mci_pltfm_match, pdev->dev.of_node); + drv_data = match->data; + } + + return dw_mci_pltfm_register(pdev, drv_data); +} + +int dw_mci_pltfm_remove(struct platform_device *pdev) +{ + struct dw_mci *host = platform_get_drvdata(pdev); + + dw_mci_remove(host); + return 0; +} +EXPORT_SYMBOL_GPL(dw_mci_pltfm_remove); + static struct platform_driver dw_mci_pltfm_driver = { .probe = dw_mci_pltfm_probe, .remove = dw_mci_pltfm_remove,