From patchwork Fri Oct 12 12:29:23 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chris Brandt X-Patchwork-Id: 10638621 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 931A413AD for ; Fri, 12 Oct 2018 12:29:54 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 839AE2BC01 for ; Fri, 12 Oct 2018 12:29:54 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 775DA2BC11; Fri, 12 Oct 2018 12:29:54 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 092A72BC01 for ; Fri, 12 Oct 2018 12:29:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728472AbeJLUCI (ORCPT ); Fri, 12 Oct 2018 16:02:08 -0400 Received: from relmlor4.renesas.com ([210.160.252.174]:13898 "EHLO relmlie3.idc.renesas.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1728131AbeJLUCI (ORCPT ); Fri, 12 Oct 2018 16:02:08 -0400 Received: from unknown (HELO relmlir2.idc.renesas.com) ([10.200.68.152]) by relmlie3.idc.renesas.com with ESMTP; 12 Oct 2018 21:29:51 +0900 Received: from relmlii1.idc.renesas.com (relmlii1.idc.renesas.com [10.200.68.65]) by relmlir2.idc.renesas.com (Postfix) with ESMTP id 9CCFE8ECB3; Fri, 12 Oct 2018 21:29:51 +0900 (JST) X-IronPort-AV: E=Sophos;i="5.54,372,1534777200"; d="scan'208";a="293392938" Received: from unknown (HELO rtamta01.rta.renesas.com) ([143.103.48.75]) by relmlii1.idc.renesas.com with ESMTP; 12 Oct 2018 21:29:49 +0900 Received: from ubuntu.localdomain (unknown [143.103.58.43]) by rtamta01.rta.renesas.com (Postfix) with ESMTP id 1559F1FD; Fri, 12 Oct 2018 12:29:43 +0000 (UTC) From: Chris Brandt To: Ulf Hansson , Rob Herring , Mark Rutland , Geert Uytterhoeven , Michael Turquette , Stephen Boyd Cc: Wolfram Sang , linux-clk@vger.kernel.org, linux-mmc@vger.kernel.org, devicetree@vger.kernel.org, linux-renesas-soc@vger.kernel.org, Chris Brandt Subject: [PATCH v4 2/3] mmc: renesas_sdhi_internal_dmac: Add R7S9210 support Date: Fri, 12 Oct 2018 07:29:23 -0500 Message-Id: <20181012122924.5543-3-chris.brandt@renesas.com> X-Mailer: git-send-email 2.16.1 In-Reply-To: <20181012122924.5543-1-chris.brandt@renesas.com> References: <20181012122924.5543-1-chris.brandt@renesas.com> Sender: linux-clk-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-clk@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP The SDHI/MMC controller in the RZ/A2 is almost the same as R-Car gen3, but with some minor differences. Signed-off-by: Chris Brandt --- v4: * Fixed spelling in #define v3: * Removed extra space in Kconfig * Removed unneeded parentheses v2: * Made comment clearer --- drivers/mmc/host/Kconfig | 5 +++-- drivers/mmc/host/renesas_sdhi_internal_dmac.c | 28 +++++++++++++++++++++++++-- 2 files changed, 29 insertions(+), 4 deletions(-) diff --git a/drivers/mmc/host/Kconfig b/drivers/mmc/host/Kconfig index cf984f0f0246..b69d5cd45d0f 100644 --- a/drivers/mmc/host/Kconfig +++ b/drivers/mmc/host/Kconfig @@ -636,13 +636,14 @@ config MMC_SDHI_SYS_DMAC config MMC_SDHI_INTERNAL_DMAC tristate "DMA for SDHI SD/SDIO controllers using on-chip bus mastering" - depends on ARM64 || COMPILE_TEST + depends on ARM64 || ARCH_R7S9210 || COMPILE_TEST depends on MMC_SDHI default MMC_SDHI if ARM64 help This provides DMA support for SDHI SD/SDIO controllers using on-chip bus mastering. This supports the controllers - found in arm64 based SoCs. + found in arm64 based SoCs. This controller is also found in + RZ/A2 series SoCs. config MMC_UNIPHIER tristate "UniPhier SD/eMMC Host Controller support" diff --git a/drivers/mmc/host/renesas_sdhi_internal_dmac.c b/drivers/mmc/host/renesas_sdhi_internal_dmac.c index e5e5015ca680..065dc527291c 100644 --- a/drivers/mmc/host/renesas_sdhi_internal_dmac.c +++ b/drivers/mmc/host/renesas_sdhi_internal_dmac.c @@ -34,7 +34,7 @@ #define DTRAN_MODE_CH_NUM_CH0 0 /* "downstream" = for write commands */ #define DTRAN_MODE_CH_NUM_CH1 BIT(16) /* "upstream" = for read commands */ #define DTRAN_MODE_BUS_WIDTH (BIT(5) | BIT(4)) -#define DTRAN_MODE_ADDR_MODE BIT(0) /* 1 = Increment address */ +#define DTRAN_MODE_ADDR_MODE BIT(0) /* 1 = Increment address, 0 = Fixed */ /* DM_CM_DTRAN_CTRL */ #define DTRAN_CTRL_DM_START BIT(0) @@ -73,6 +73,9 @@ static unsigned long global_flags; #define SDHI_INTERNAL_DMAC_ONE_RX_ONLY 0 #define SDHI_INTERNAL_DMAC_RX_IN_USE 1 +/* RZ/A2 does not have the ADRR_MODE bit */ +#define SDHI_INTERNAL_DMAC_ADDR_MODE_FIXED_ONLY 2 + /* Definitions for sampling clocks */ static struct renesas_sdhi_scc rcar_gen3_scc_taps[] = { { @@ -81,6 +84,21 @@ static struct renesas_sdhi_scc rcar_gen3_scc_taps[] = { }, }; +static const struct renesas_sdhi_of_data of_rza2_compatible = { + .tmio_flags = TMIO_MMC_HAS_IDLE_WAIT | TMIO_MMC_CLK_ACTUAL | + TMIO_MMC_HAVE_CBSY, + .tmio_ocr_mask = MMC_VDD_32_33, + .capabilities = MMC_CAP_SD_HIGHSPEED | MMC_CAP_SDIO_IRQ | + MMC_CAP_CMD23, + .bus_shift = 2, + .scc_offset = 0 - 0x1000, + .taps = rcar_gen3_scc_taps, + .taps_num = ARRAY_SIZE(rcar_gen3_scc_taps), + /* DMAC can handle 0xffffffff blk count but only 1 segment */ + .max_blk_count = 0xffffffff, + .max_segs = 1, +}; + static const struct renesas_sdhi_of_data of_rcar_r8a7795_compatible = { .tmio_flags = TMIO_MMC_HAS_IDLE_WAIT | TMIO_MMC_CLK_ACTUAL | TMIO_MMC_HAVE_CBSY | TMIO_MMC_MIN_RCAR2 | @@ -113,6 +131,7 @@ static const struct renesas_sdhi_of_data of_rcar_gen3_compatible = { }; static const struct of_device_id renesas_sdhi_internal_dmac_of_match[] = { + { .compatible = "renesas,sdhi-r7s9210", .data = &of_rza2_compatible, }, { .compatible = "renesas,sdhi-r8a7795", .data = &of_rcar_r8a7795_compatible, }, { .compatible = "renesas,sdhi-r8a7796", .data = &of_rcar_r8a7795_compatible, }, { .compatible = "renesas,rcar-gen3-sdhi", .data = &of_rcar_gen3_compatible, }, @@ -171,7 +190,10 @@ renesas_sdhi_internal_dmac_start_dma(struct tmio_mmc_host *host, struct mmc_data *data) { struct scatterlist *sg = host->sg_ptr; - u32 dtran_mode = DTRAN_MODE_BUS_WIDTH | DTRAN_MODE_ADDR_MODE; + u32 dtran_mode = DTRAN_MODE_BUS_WIDTH; + + if (!test_bit(SDHI_INTERNAL_DMAC_ADDR_MODE_FIXED_ONLY, &global_flags)) + dtran_mode |= DTRAN_MODE_ADDR_MODE; if (!dma_map_sg(&host->pdev->dev, sg, host->sg_len, mmc_get_dma_dir(data))) @@ -290,6 +312,8 @@ static const struct tmio_mmc_dma_ops renesas_sdhi_internal_dmac_dma_ops = { */ static const struct soc_device_attribute gen3_soc_whitelist[] = { /* specific ones */ + { .soc_id = "r7s9210", + .data = (void *)BIT(SDHI_INTERNAL_DMAC_ADDR_MODE_FIXED_ONLY) }, { .soc_id = "r8a7795", .revision = "ES1.*", .data = (void *)BIT(SDHI_INTERNAL_DMAC_ONE_RX_ONLY) }, { .soc_id = "r8a7796", .revision = "ES1.0",