[PATCH v4 1/2] usb: musb: dsps, debugfs files

[Felipe Balbi]

On Fri, Jan 17, 2014 at 10:22:35AM +0100, Markus Pargmann wrote:
> debugfs files to show the contents of important dsps registers.
> 
> Signed-off-by: Markus Pargmann <mpa at pengutronix.de>
> ---
>  drivers/usb/musb/musb_dsps.c | 54 ++++++++++++++++++++++++++++++++++++++++++++
>  1 file changed, 54 insertions(+)
> 
> diff --git a/drivers/usb/musb/musb_dsps.c b/drivers/usb/musb/musb_dsps.c
> index 593d3c9..d0a97d6 100644
> --- a/drivers/usb/musb/musb_dsps.c
> +++ b/drivers/usb/musb/musb_dsps.c
> @@ -46,6 +46,8 @@
>  #include <linux/of_irq.h>
>  #include <linux/usb/of.h>
>  
> +#include <linux/debugfs.h>
> +
>  #include "musb_core.h"
>  
>  static const struct of_device_id musb_dsps_of_match[];
> @@ -137,6 +139,26 @@ struct dsps_glue {
>  	unsigned long last_timer;    /* last timer data for each instance */
>  
>  	struct dsps_context context;
> +	struct debugfs_regset32 regset;
> +	struct dentry *dbgfs_root;
> +};
> +
> +static const struct debugfs_reg32 dsps_musb_regs[] = {
> +	{ "revision",		0x00 },
> +	{ "control",		0x14 },
> +	{ "status",		0x18 },
> +	{ "eoi",		0x24 },
> +	{ "intr0_stat",		0x30 },
> +	{ "intr1_stat",		0x34 },
> +	{ "intr0_set",		0x38 },
> +	{ "intr1_set",		0x3c },
> +	{ "txmode",		0x70 },
> +	{ "rxmode",		0x74 },
> +	{ "autoreq",		0xd0 },
> +	{ "srpfixtime",		0xd4 },
> +	{ "tdown",		0xd8 },
> +	{ "phy_utmi",		0xe0 },
> +	{ "mode",		0xe8 },
>  };
>  
>  static void dsps_musb_try_idle(struct musb *musb, unsigned long timeout)
> @@ -369,6 +391,30 @@ out:
>  	return ret;
>  }
>  
> +static int dsps_musb_dbg_init(struct musb *musb, struct dsps_glue *glue)
> +{
> +	struct dentry *root;
> +	struct dentry *file;
> +	char buf[128];
> +
> +	sprintf(buf, "%s.dsps", dev_name(musb->controller));
> +	root = debugfs_create_dir(buf, NULL);
> +	if (!root)

wrong, you should be using IS_ERR()

-- 
balbi
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