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Mon, 03 Jun 2019 17:55:32 +0200 Received: from zeta.dmz-eu.st.com (zeta.dmz-eu.st.com [164.129.230.9]) by beta.dmz-eu.st.com (STMicroelectronics) with ESMTP id 8A7D931; Mon, 3 Jun 2019 15:55:31 +0000 (GMT) Received: from Webmail-eu.st.com (Safex1hubcas21.st.com [10.75.90.44]) by zeta.dmz-eu.st.com (STMicroelectronics) with ESMTP id 69E414E66; Mon, 3 Jun 2019 15:55:31 +0000 (GMT) Received: from SAFEX1HUBCAS23.st.com (10.75.90.47) by SAFEX1HUBCAS21.st.com (10.75.90.44) with Microsoft SMTP Server (TLS) id 14.3.439.0; Mon, 3 Jun 2019 17:55:31 +0200 Received: from lmecxl0923.lme.st.com (10.48.0.237) by webmail-ga.st.com (10.75.90.48) with Microsoft SMTP Server (TLS) id 14.3.439.0; Mon, 3 Jun 2019 17:55:30 +0200 From: Ludovic Barre To: Ulf Hansson , Rob Herring Subject: [PATCH V3 3/3] mmc: mmci: add busy detect for stm32 sdmmc variant Date: Mon, 3 Jun 2019 17:55:25 +0200 Message-ID: <1559577325-19266-4-git-send-email-ludovic.Barre@st.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1559577325-19266-1-git-send-email-ludovic.Barre@st.com> References: <1559577325-19266-1-git-send-email-ludovic.Barre@st.com> MIME-Version: 1.0 X-Originating-IP: [10.48.0.237] X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:, , definitions=2019-06-03_12:, , signatures=0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190603_085537_484149_55E7832A X-CRM114-Status: GOOD ( 14.23 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, Alexandre Torgue , linux-mmc@vger.kernel.org, linux-kernel@vger.kernel.org, srinivas.kandagatla@linaro.org, Ludovic Barre , Maxime Coquelin , linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP From: Ludovic Barre This patch enables busy detection for stm32 sdmmc which requires to set data timer to define the busy timeout. sdmmc has 2 flags: -busyd0: inverted value of d0 line. -busyd0end which indicates only end of busy following a cmd response. Only one interrupt on busyd0end. Signed-off-by: Ludovic Barre --- drivers/mmc/host/mmci.c | 4 ++++ drivers/mmc/host/mmci.h | 1 + 2 files changed, 5 insertions(+) diff --git a/drivers/mmc/host/mmci.c b/drivers/mmc/host/mmci.c index 5a8b232..6210f1f 100644 --- a/drivers/mmc/host/mmci.c +++ b/drivers/mmc/host/mmci.c @@ -264,6 +264,10 @@ static struct variant_data variant_stm32_sdmmc = { .datalength_bits = 25, .datactrl_blocksz = 14, .stm32_idmabsize_mask = GENMASK(12, 5), + .busy_detect = true, + .busy_timeout = true, + .busy_detect_flag = MCI_STM32_BUSYD0, + .busy_detect_mask = MCI_STM32_BUSYD0ENDMASK, .init = sdmmc_variant_init, }; diff --git a/drivers/mmc/host/mmci.h b/drivers/mmc/host/mmci.h index b43a958..ac19de8 100644 --- a/drivers/mmc/host/mmci.h +++ b/drivers/mmc/host/mmci.h @@ -167,6 +167,7 @@ #define MCI_ST_CARDBUSY (1 << 24) /* Extended status bits for the STM32 variants */ #define MCI_STM32_BUSYD0 BIT(20) +#define MCI_STM32_BUSYD0END BIT(21) #define MMCICLEAR 0x038 #define MCI_CMDCRCFAILCLR (1 << 0)