Re: [PATCH] mfd: lpc_ich: Separate device cells for clarity

[Andy Shevchenko <andriy.shevchenko@linux.intel.com>]

On Sat, 2015-09-19 at 11:13 +0100, Lee Jones wrote:
> On Thu, 17 Sep 2015, Andy Shevchenko wrote:
> 
> > On Thu, 2015-09-03 at 14:14 -0500, Aaron Sierra wrote:
> > > The lpc_ich_cells array gives the wrong impression about the
> > > relationship between the watchdog and GPIO devices. They are
> > > completely distinct devices, so this patch separates the
> > > array into distinct mfd_cell structs per device.
> > > 
> > > A side effect of removing the array, is that the lpc_cells enum
> > > is no longer needed.
> > > 
> > 
> > Looks good for me.
> 
> Is that an Ack?  If so, can you formally provide one please?

Sorry, might be late. Was too busy by some hw quirks yesterday.

Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>

> 
> > > Signed-off-by: Aaron Sierra <asierra@xes-inc.com>
> > > ---
> > >  drivers/mfd/lpc_ich.c | 42 ++++++++++++++++++-------------------
> > > ----
> > > -
> > >  1 file changed, 18 insertions(+), 24 deletions(-)
> > > 
> > > diff --git a/drivers/mfd/lpc_ich.c b/drivers/mfd/lpc_ich.c
> > > index 8de3439..7a01d430 100644
> > > --- a/drivers/mfd/lpc_ich.c
> > > +++ b/drivers/mfd/lpc_ich.c
> > > @@ -131,24 +131,18 @@ static struct resource gpio_ich_res[] = {
> > >  	},
> > >  };
> > >  
> > > -enum lpc_cells {
> > > -	LPC_WDT = 0,
> > > -	LPC_GPIO,
> > > +static struct mfd_cell lpc_ich_wdt_cell = {
> > > +	.name = "iTCO_wdt",
> > > +	.num_resources = ARRAY_SIZE(wdt_ich_res),
> > > +	.resources = wdt_ich_res,
> > > +	.ignore_resource_conflicts = true,
> > >  };
> > >  
> > > -static struct mfd_cell lpc_ich_cells[] = {
> > > -	[LPC_WDT] = {
> > > -		.name = "iTCO_wdt",
> > > -		.num_resources = ARRAY_SIZE(wdt_ich_res),
> > > -		.resources = wdt_ich_res,
> > > -		.ignore_resource_conflicts = true,
> > > -	},
> > > -	[LPC_GPIO] = {
> > > -		.name = "gpio_ich",
> > > -		.num_resources = ARRAY_SIZE(gpio_ich_res),
> > > -		.resources = gpio_ich_res,
> > > -		.ignore_resource_conflicts = true,
> > > -	},
> > > +static struct mfd_cell lpc_ich_gpio_cell = {
> > > +	.name = "gpio_ich",
> > > +	.num_resources = ARRAY_SIZE(gpio_ich_res),
> > > +	.resources = gpio_ich_res,
> > > +	.ignore_resource_conflicts = true,
> > >  };
> > >  
> > >  /* chipset related info */
> > > @@ -881,7 +875,7 @@ static int lpc_ich_init_gpio(struct pci_dev 
> > > *dev)
> > >  	base_addr = base_addr_cfg & 0x0000ff80;
> > >  	if (!base_addr) {
> > >  		dev_notice(&dev->dev, "I/O space for ACPI 
> > > uninitialized\n");
> > > -		lpc_ich_cells[LPC_GPIO].num_resources--;
> > > +		lpc_ich_gpio_cell.num_resources--;
> > >  		goto gpe0_done;
> > >  	}
> > >  
> > > @@ -895,7 +889,7 @@ static int lpc_ich_init_gpio(struct pci_dev 
> > > *dev)
> > >  		 * the platform_device subsystem doesn't see 
> > > this 
> > > resource
> > >  		 * or it will register an invalid region.
> > >  		 */
> > > -		lpc_ich_cells[LPC_GPIO].num_resources--;
> > > +		lpc_ich_gpio_cell.num_resources--;
> > >  		acpi_conflict = true;
> > >  	} else {
> > >  		lpc_ich_enable_acpi_space(dev);
> > > @@ -933,14 +927,14 @@ gpe0_done:
> > >  	lpc_chipset_info[priv->chipset].use_gpio = ret;
> > >  	lpc_ich_enable_gpio_space(dev);
> > >  
> > > -	lpc_ich_finalize_cell(dev, &lpc_ich_cells[LPC_GPIO]);
> > > +	lpc_ich_finalize_cell(dev, &lpc_ich_gpio_cell);
> > >  	ret = mfd_add_devices(&dev->dev, PLATFORM_DEVID_AUTO,
> > > -			      &lpc_ich_cells[LPC_GPIO], 1, NULL, 
> > > 0, 
> > > NULL);
> > > +			      &lpc_ich_gpio_cell, 1, NULL, 0, 
> > > NULL);
> > >  
> > >  gpio_done:
> > >  	if (acpi_conflict)
> > >  		pr_warn("Resource conflict(s) found affecting 
> > > %s\n",
> > > -				lpc_ich_cells[LPC_GPIO].name);
> > > +				lpc_ich_gpio_cell.name);
> > >  	return ret;
> > >  }
> > >  
> > > @@ -984,7 +978,7 @@ static int lpc_ich_init_wdt(struct pci_dev 
> > > *dev)
> > >  	 */
> > >  	if (lpc_chipset_info[priv->chipset].iTCO_version == 1) {
> > >  		/* Don't register iomem for TCO ver 1 */
> > > -		lpc_ich_cells[LPC_WDT].num_resources--;
> > > +		lpc_ich_wdt_cell.num_resources--;
> > >  	} else if (lpc_chipset_info[priv->chipset].iTCO_version 
> > > == 
> > > 2) {
> > >  		pci_read_config_dword(dev, RCBABASE, 
> > > &base_addr_cfg);
> > >  		base_addr = base_addr_cfg & 0xffffc000;
> > > @@ -1007,9 +1001,9 @@ static int lpc_ich_init_wdt(struct pci_dev 
> > > *dev)
> > >  		res->end = base_addr + ACPIBASE_PMC_END;
> > >  	}
> > >  
> > > -	lpc_ich_finalize_cell(dev, &lpc_ich_cells[LPC_WDT]);
> > > +	lpc_ich_finalize_cell(dev, &lpc_ich_wdt_cell);
> > >  	ret = mfd_add_devices(&dev->dev, PLATFORM_DEVID_AUTO,
> > > -			      &lpc_ich_cells[LPC_WDT], 1, NULL, 
> > > 0, 
> > > NULL);
> > > +			      &lpc_ich_wdt_cell, 1, NULL, 0, 
> > > NULL);
> > >  
> > >  wdt_done:
> > >  	return ret;
> > 
> 

-- 
Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Intel Finland Oy