From: Alexander Kochetkov <al.kochet@gmail.com> To: Jaehoon Chung <jh80.chung@samsung.com>, Ulf Hansson <ulf.hansson@linaro.org>, Heiko Stuebner <heiko@sntech.de>, linux-mmc@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org Cc: Alexander Kochetkov <al.kochet@gmail.com> Subject: [PATCH 1/2] mmc: dw_mmc: add init_slot() hook to platform function table Date: Wed, 20 Mar 2019 20:48:04 +0300 [thread overview] Message-ID: <1553104085-32312-2-git-send-email-al.kochet@gmail.com> (raw) In-Reply-To: <1553104085-32312-1-git-send-email-al.kochet@gmail.com> The init_slot() hook allow platform driver override slot defaults provided by generic dw_mmc driver. It's required to fix EDMA based transfer hangs observed on rockchip rk3188. Signed-off-by: Alexander Kochetkov <al.kochet@gmail.com> --- drivers/mmc/host/dw_mmc.c | 4 ++++ drivers/mmc/host/dw_mmc.h | 2 ++ 2 files changed, 6 insertions(+) diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c index 80dc2fd..d3ecee9 100644 --- a/drivers/mmc/host/dw_mmc.c +++ b/drivers/mmc/host/dw_mmc.c @@ -2819,6 +2819,7 @@ static int dw_mci_init_slot_caps(struct dw_mci_slot *slot) static int dw_mci_init_slot(struct dw_mci *host) { + const struct dw_mci_drv_data *drv_data = host->drv_data; struct mmc_host *mmc; struct dw_mci_slot *slot; int ret; @@ -2876,6 +2877,9 @@ static int dw_mci_init_slot(struct dw_mci *host) mmc->max_seg_size = mmc->max_req_size; } + if (drv_data && drv_data->init_slot) + drv_data->init_slot(host); + dw_mci_get_cd(mmc); ret = mmc_add_host(mmc); diff --git a/drivers/mmc/host/dw_mmc.h b/drivers/mmc/host/dw_mmc.h index 46e9f8e..de51c59 100644 --- a/drivers/mmc/host/dw_mmc.h +++ b/drivers/mmc/host/dw_mmc.h @@ -548,6 +548,7 @@ struct dw_mci_slot { * @caps: mmc subsystem specified capabilities of the controller(s). * @num_caps: number of capabilities specified by @caps. * @init: early implementation specific initialization. + * @init_slot: platform specific slot initialization. * @set_ios: handle bus specific extensions. * @parse_dt: parse implementation specific device tree properties. * @execute_tuning: implementation specific tuning procedure. @@ -560,6 +561,7 @@ struct dw_mci_drv_data { unsigned long *caps; u32 num_caps; int (*init)(struct dw_mci *host); + void (*init_slot)(struct dw_mci *host); void (*set_ios)(struct dw_mci *host, struct mmc_ios *ios); int (*parse_dt)(struct dw_mci *host); int (*execute_tuning)(struct dw_mci_slot *slot, u32 opcode); -- 1.7.9.5
WARNING: multiple messages have this Message-ID (diff)
From: Alexander Kochetkov <al.kochet@gmail.com> To: Jaehoon Chung <jh80.chung@samsung.com>, Ulf Hansson <ulf.hansson@linaro.org>, Heiko Stuebner <heiko@sntech.de>, linux-mmc@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org Cc: Alexander Kochetkov <al.kochet@gmail.com> Subject: [PATCH 1/2] mmc: dw_mmc: add init_slot() hook to platform function table Date: Wed, 20 Mar 2019 20:48:04 +0300 [thread overview] Message-ID: <1553104085-32312-2-git-send-email-al.kochet@gmail.com> (raw) In-Reply-To: <1553104085-32312-1-git-send-email-al.kochet@gmail.com> The init_slot() hook allow platform driver override slot defaults provided by generic dw_mmc driver. It's required to fix EDMA based transfer hangs observed on rockchip rk3188. Signed-off-by: Alexander Kochetkov <al.kochet@gmail.com> --- drivers/mmc/host/dw_mmc.c | 4 ++++ drivers/mmc/host/dw_mmc.h | 2 ++ 2 files changed, 6 insertions(+) diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c index 80dc2fd..d3ecee9 100644 --- a/drivers/mmc/host/dw_mmc.c +++ b/drivers/mmc/host/dw_mmc.c @@ -2819,6 +2819,7 @@ static int dw_mci_init_slot_caps(struct dw_mci_slot *slot) static int dw_mci_init_slot(struct dw_mci *host) { + const struct dw_mci_drv_data *drv_data = host->drv_data; struct mmc_host *mmc; struct dw_mci_slot *slot; int ret; @@ -2876,6 +2877,9 @@ static int dw_mci_init_slot(struct dw_mci *host) mmc->max_seg_size = mmc->max_req_size; } + if (drv_data && drv_data->init_slot) + drv_data->init_slot(host); + dw_mci_get_cd(mmc); ret = mmc_add_host(mmc); diff --git a/drivers/mmc/host/dw_mmc.h b/drivers/mmc/host/dw_mmc.h index 46e9f8e..de51c59 100644 --- a/drivers/mmc/host/dw_mmc.h +++ b/drivers/mmc/host/dw_mmc.h @@ -548,6 +548,7 @@ struct dw_mci_slot { * @caps: mmc subsystem specified capabilities of the controller(s). * @num_caps: number of capabilities specified by @caps. * @init: early implementation specific initialization. + * @init_slot: platform specific slot initialization. * @set_ios: handle bus specific extensions. * @parse_dt: parse implementation specific device tree properties. * @execute_tuning: implementation specific tuning procedure. @@ -560,6 +561,7 @@ struct dw_mci_drv_data { unsigned long *caps; u32 num_caps; int (*init)(struct dw_mci *host); + void (*init_slot)(struct dw_mci *host); void (*set_ios)(struct dw_mci *host, struct mmc_ios *ios); int (*parse_dt)(struct dw_mci *host); int (*execute_tuning)(struct dw_mci_slot *slot, u32 opcode); -- 1.7.9.5 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2019-03-20 17:48 UTC|newest] Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top 2019-03-20 17:48 [PATCH 0/2] Fix eMMC hang on rk3188 and earlier Alexander Kochetkov 2019-03-20 17:48 ` Alexander Kochetkov 2019-03-20 17:48 ` Alexander Kochetkov [this message] 2019-03-20 17:48 ` [PATCH 1/2] mmc: dw_mmc: add init_slot() hook to platform function table Alexander Kochetkov 2019-03-20 17:48 ` [PATCH 2/2] mmc: dw_mmc-rockchip: fix transfer hangs on rk3188 Alexander Kochetkov 2019-03-20 17:48 ` Alexander Kochetkov 2019-03-21 2:31 ` [PATCH 2/2] mmc: dw_mmc-rockchip: fix transfer hangs on rk3188【请注意,邮件由linux-mmc-owner@vger.kernel.org代发】 Shawn Lin 2019-03-21 2:31 ` Shawn Lin 2019-03-21 10:32 ` Alexander Kochetkov 2019-03-21 10:32 ` Alexander Kochetkov
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