[PATCH 1/9] mmc: tmio: add tmio_mmc_host_alloc/free()

Kuninori Morimoto
2015-01-05T07:02:28Z

From: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>

Current tmio_mmc driver is using tmio_mmc_data for driver/platform
specific data/callback, and it is needed for tmio_mmc_host_probe()
function. Because of this style, include/linux/mfd/tmio.h header has
tmio driver/framework specific data which is not needed from platform.

This patch adds new tmio_mmc_host_alloc/free() as cleanup preparation.
tmio driver specific data/callback will be implemented in tmio_mmc_host,
and platform specific data/callback will be implemented in tmio_mmc_data
in this cleanup.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
---
drivers/mmc/host/sh_mobile_sdhi.c | 12 ++++++++---
drivers/mmc/host/tmio_mmc.c | 10 +++++++--
drivers/mmc/host/tmio_mmc.h | 5 +++--
drivers/mmc/host/tmio_mmc_pio.c | 42 ++++++++++++++++++++++++-------------
include/linux/mfd/tmio.h | 1 -
5 files changed, 47 insertions(+), 23 deletions(-)

diff --git a/drivers/mmc/host/sh_mobile_sdhi.c b/drivers/mmc/host/sh_mobile_sdhi.c
index 00c8ebd..b2cec5b 100644
--- a/drivers/mmc/host/sh_mobile_sdhi.c
+++ b/drivers/mmc/host/sh_mobile_sdhi.c
@@ -113,7 +113,7 @@ static int sh_mobile_sdhi_wait_idle(struct tmio_mmc_host *host)
udelay(1);

if (!timeout) {
- dev_warn(host->pdata->dev, "timeout waiting for SD bus idle\n");
+ dev_warn(&host->pdev->dev, "timeout waiting for SD bus idle\n");
return -EBUSY;
}

@@ -207,6 +207,10 @@ static int sh_mobile_sdhi_probe(struct platform_device *pdev)
goto eclkget;
}

+ host = tmio_mmc_host_alloc(pdev);
+ if (!host)
+ goto eprobe;
+
mmc_data->clk_enable = sh_mobile_sdhi_clk_enable;
mmc_data->clk_disable = sh_mobile_sdhi_clk_disable;
mmc_data->capabilities = MMC_CAP_MMC_HIGHSPEED;
@@ -274,9 +278,9 @@ static int sh_mobile_sdhi_probe(struct platform_device *pdev)
/* SD control register space size is 0x100, 0x200 for bus_shift=1 */
mmc_data->bus_shift = resource_size(res) >> 9;

- ret = tmio_mmc_host_probe(&host, pdev, mmc_data);
+ ret = tmio_mmc_host_probe(host, mmc_data);
if (ret < 0)
- goto eprobe;
+ goto efree;

/*
* FIXME:
@@ -351,6 +355,8 @@ static int sh_mobile_sdhi_probe(struct platform_device *pdev)

eirq:
tmio_mmc_host_remove(host);
+efree:
+ tmio_mmc_host_free(host);
eprobe:
eclkget:
if (p && p->cleanup)
diff --git a/drivers/mmc/host/tmio_mmc.c b/drivers/mmc/host/tmio_mmc.c
index 2616fdf..f47ae08 100644
--- a/drivers/mmc/host/tmio_mmc.c
+++ b/drivers/mmc/host/tmio_mmc.c
@@ -92,10 +92,14 @@ static int tmio_mmc_probe(struct platform_device *pdev)
pdata->bus_shift = resource_size(res) >> 10;
pdata->flags |= TMIO_MMC_HAVE_HIGH_REG;

- ret = tmio_mmc_host_probe(&host, pdev, pdata);
- if (ret)
+ host = tmio_mmc_host_alloc(pdev);
+ if (!host)
goto cell_disable;

+ ret = tmio_mmc_host_probe(host, pdata);
+ if (ret)
+ goto host_free;
+
ret = request_irq(irq, tmio_mmc_irq, IRQF_TRIGGER_FALLING,
dev_name(&pdev->dev), host);
if (ret)
@@ -108,6 +112,8 @@ static int tmio_mmc_probe(struct platform_device *pdev)

host_remove:
tmio_mmc_host_remove(host);
+host_free:
+ tmio_mmc_host_free(host);
cell_disable:
if (cell->disable)
cell->disable(pdev);
diff --git a/drivers/mmc/host/tmio_mmc.h b/drivers/mmc/host/tmio_mmc.h
index a34ecbe..3d02a3c1 100644
--- a/drivers/mmc/host/tmio_mmc.h
+++ b/drivers/mmc/host/tmio_mmc.h
@@ -85,8 +85,9 @@ struct tmio_mmc_host {
bool sdio_irq_enabled;
};

-int tmio_mmc_host_probe(struct tmio_mmc_host **host,
- struct platform_device *pdev,
+struct tmio_mmc_host* tmio_mmc_host_alloc(struct platform_device *pdev);
+void tmio_mmc_host_free(struct tmio_mmc_host *host);
+int tmio_mmc_host_probe(struct tmio_mmc_host *host,
struct tmio_mmc_data *pdata);
void tmio_mmc_host_remove(struct tmio_mmc_host *host);
void tmio_mmc_do_data_irq(struct tmio_mmc_host *host);
diff --git a/drivers/mmc/host/tmio_mmc_pio.c b/drivers/mmc/host/tmio_mmc_pio.c
index 250bf8c..580d00b 100644
--- a/drivers/mmc/host/tmio_mmc_pio.c
+++ b/drivers/mmc/host/tmio_mmc_pio.c
@@ -1054,12 +1054,35 @@ static void tmio_mmc_of_parse(struct platform_device *pdev,
pdata->flags |= TMIO_MMC_WRPROTECT_DISABLE;
}

-int tmio_mmc_host_probe(struct tmio_mmc_host **host,
- struct platform_device *pdev,
- struct tmio_mmc_data *pdata)
+struct tmio_mmc_host*
+tmio_mmc_host_alloc(struct platform_device *pdev)
{
- struct tmio_mmc_host *_host;
+ struct tmio_mmc_host *host;
struct mmc_host *mmc;
+
+ mmc = mmc_alloc_host(sizeof(struct tmio_mmc_host), &pdev->dev);
+ if (!mmc)
+ return NULL;
+
+ host = mmc_priv(mmc);
+ host->mmc = mmc;
+ host->pdev = pdev;
+
+ return host;
+}
+
+void tmio_mmc_host_free(struct tmio_mmc_host *host)
+{
+ mmc_free_host(host->mmc);
+
+ host->mmc = NULL;
+}
+
+int tmio_mmc_host_probe(struct tmio_mmc_host *_host,
+ struct tmio_mmc_data *pdata)
+{
+ struct platform_device *pdev = _host->pdev;
+ struct mmc_host *mmc = _host->mmc;
struct resource *res_ctl;
int ret;
u32 irq_mask = TMIO_MASK_CMD;
@@ -1073,19 +1096,11 @@ int tmio_mmc_host_probe(struct tmio_mmc_host **host,
if (!res_ctl)
return -EINVAL;

- mmc = mmc_alloc_host(sizeof(struct tmio_mmc_host), &pdev->dev);
- if (!mmc)
- return -ENOMEM;
-
ret = mmc_of_parse(mmc);
if (ret < 0)
goto host_free;

- pdata->dev = &pdev->dev;
- _host = mmc_priv(mmc);
_host->pdata = pdata;
- _host->mmc = mmc;
- _host->pdev = pdev;
platform_set_drvdata(pdev, mmc);

_host->set_pwr = pdata->set_pwr;
@@ -1192,8 +1207,6 @@ int tmio_mmc_host_probe(struct tmio_mmc_host **host,
mmc_gpiod_request_cd_irq(mmc);
}

- *host = _host;
-
return 0;

host_free:
@@ -1222,7 +1235,6 @@ void tmio_mmc_host_remove(struct tmio_mmc_host *host)
pm_runtime_disable(&pdev->dev);

iounmap(host->ctl);
- mmc_free_host(mmc);
}
EXPORT_SYMBOL(tmio_mmc_host_remove);

diff --git a/include/linux/mfd/tmio.h b/include/linux/mfd/tmio.h
index 5738817..c7d9af0 100644
--- a/include/linux/mfd/tmio.h
+++ b/include/linux/mfd/tmio.h
@@ -135,7 +135,6 @@ struct tmio_mmc_data {
unsigned long bus_shift;
u32 ocr_mask; /* available voltages */
struct tmio_mmc_dma *dma;
- struct device *dev;
unsigned int cd_gpio;
void (*set_pwr)(struct platform_device *host, int state);
void (*set_clk_div)(struct platform_device *host, int state);
--
1.7.9.5