[PATCH V2 03/27] mmc: mmci: convert dma_setup callback to return an int

From: Ludovic Barre
Date: Tue Sep 18 2018 - 06:59:09 EST


From: Ludovic Barre <ludovic.barre@xxxxxx>

This patch converts dma_setup callback to return an integer
This patch is needed to prepare sdmmc variant with internal dma

Signed-off-by: Ludovic Barre <ludovic.barre@xxxxxx>
---
drivers/mmc/host/mmci.c | 16 +++++++++++-----
drivers/mmc/host/mmci.h | 2 +-
drivers/mmc/host/mmci_qcom_dml.c | 6 ++++--
3 files changed, 16 insertions(+), 8 deletions(-)

diff --git a/drivers/mmc/host/mmci.c b/drivers/mmc/host/mmci.c
index 7d22cb9..077d4a7 100644
--- a/drivers/mmc/host/mmci.c
+++ b/drivers/mmc/host/mmci.c
@@ -415,7 +415,7 @@ static void mmci_init_sg(struct mmci_host *host, struct mmc_data *data)
* no custom DMA interfaces are supported.
*/
#ifdef CONFIG_DMA_ENGINE
-static void mmci_dma_setup(struct mmci_host *host)
+static int mmci_dma_setup(struct mmci_host *host)
{
const char *rxname, *txname;

@@ -466,7 +466,9 @@ static void mmci_dma_setup(struct mmci_host *host)
}

if (host->ops && host->ops->dma_setup)
- host->ops->dma_setup(host);
+ return host->ops->dma_setup(host);
+
+ return 0;
}

/*
@@ -515,7 +517,7 @@ static void mmci_dma_finalize(struct mmci_host *host, struct mmc_data *data)
u32 status;
int i;

- if (!__dma_inprogress(dmae))
+ if (!__dma_inprogress(host))
return;

/* Wait up to 1ms for the DMA to complete */
@@ -741,8 +743,10 @@ static void mmci_post_request(struct mmc_host *mmc, struct mmc_request *mrq,
static void mmci_get_next_data(struct mmci_host *host, struct mmc_data *data)
{
}
-static inline void mmci_dma_setup(struct mmci_host *host)
+
+static inline int mmci_dma_setup(struct mmci_host *host)
{
+ return 0;
}

static inline void mmci_dma_release(struct mmci_host *host)
@@ -1796,7 +1800,9 @@ static int mmci_probe(struct amba_device *dev,
amba_rev(dev), (unsigned long long)dev->res.start,
dev->irq[0], dev->irq[1]);

- mmci_dma_setup(host);
+ ret = mmci_dma_setup(host);
+ if (ret)
+ goto clk_disable;

pm_runtime_set_autosuspend_delay(&dev->dev, 50);
pm_runtime_use_autosuspend(&dev->dev);
diff --git a/drivers/mmc/host/mmci.h b/drivers/mmc/host/mmci.h
index f1ec066..312ad5c 100644
--- a/drivers/mmc/host/mmci.h
+++ b/drivers/mmc/host/mmci.h
@@ -273,7 +273,7 @@ struct variant_data {

/* mmci variant callbacks */
struct mmci_host_ops {
- void (*dma_setup)(struct mmci_host *host);
+ int (*dma_setup)(struct mmci_host *host);
};

struct mmci_host_next {
diff --git a/drivers/mmc/host/mmci_qcom_dml.c b/drivers/mmc/host/mmci_qcom_dml.c
index be3fab5..1bb59cf 100644
--- a/drivers/mmc/host/mmci_qcom_dml.c
+++ b/drivers/mmc/host/mmci_qcom_dml.c
@@ -119,7 +119,7 @@ static int of_get_dml_pipe_index(struct device_node *np, const char *name)
}

/* Initialize the dml hardware connected to SD Card controller */
-static void qcom_dma_setup(struct mmci_host *host)
+static int qcom_dma_setup(struct mmci_host *host)
{
u32 config;
void __iomem *base;
@@ -131,7 +131,7 @@ static void qcom_dma_setup(struct mmci_host *host)

if (producer_id < 0 || consumer_id < 0) {
host->variant->qcom_dml = false;
- return;
+ return -EINVAL;
}

base = host->base + DML_OFFSET;
@@ -175,6 +175,8 @@ static void qcom_dma_setup(struct mmci_host *host)

/* Make sure dml initialization is finished */
mb();
+
+ return 0;
}

static struct mmci_host_ops qcom_variant_ops = {
--
2.7.4