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

Commit Message

Kuninori Morimoto Jan. 5, 2015, 7:02 a.m. UTC

From: Kuninori Morimoto <[e-mail]>

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 <[e-mail]>
---
 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(-)

Comments

Geert Uytterhoeven Jan. 5, 2015, 8:35 a.m. UTC | #1

Hi Morimoto-san,

On Mon, Jan 5, 2015 at 8:02 AM, Kuninori Morimoto
<[e-mail]> wrote:
> --- 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)

I think it would be better to match the naming in the mmc core layer, i.e.
tmio_mmc_alloc_host().

>  {
> -       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)

tmio_mmc_free_host

> +{
> +       mmc_free_host(host->mmc);
> +
> +       host->mmc = NULL;
> +}

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- [e-mail]

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds
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Kuninori Morimoto Jan. 5, 2015, 8:39 a.m. UTC | #2

Hi Geert

> > -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)
> 
> I think it would be better to match the naming in the mmc core layer, i.e.
> tmio_mmc_alloc_host().
> 
> >  {
> > -       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)
> 
> tmio_mmc_free_host

I don't care so match, but these are based on tmio_mmc_host_xxx naming rule
which is used in tmio_mmc driver.

Best regards
---
Kuninori Morimoto
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Patch

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);