[U-Boot] [PATCH 4/4] exynos: fix and cleanup do_sdhci_init()

[Jaehoon Chung <jh80.chung@samsung.com>]

Hi,

On 09/23/2015 06:48 PM, Lukasz Majewski wrote:
> Hi Lukasz,
> 
>> Hi Tobias,
>>
>>> The CD check is currently inverted. dm_gpio_get_value() returns
>>> one when a card is detected. All other values (zero when there
>>> is no card, or negative values for the internal errors) indicate
>>> failure.
>>>
>>> Signed-off-by: Tobias Jakobi <tjakobi@math.uni-bielefeld.de>
>>> ---
>>>  drivers/mmc/s5p_sdhci.c | 20 +++++++++++---------
>>>  1 file changed, 11 insertions(+), 9 deletions(-)
>>>
>>> diff --git a/drivers/mmc/s5p_sdhci.c b/drivers/mmc/s5p_sdhci.c
>>> index 6be3609..bc04370 100644
>>> --- a/drivers/mmc/s5p_sdhci.c
>>> +++ b/drivers/mmc/s5p_sdhci.c
>>> @@ -102,29 +102,31 @@ struct sdhci_host sdhci_host[SDHCI_MAX_HOSTS];
>>>  
>>>  static int do_sdhci_init(struct sdhci_host *host)
>>>  {
>>> -	int dev_id, flag;
>>> -	int err = 0;
>>> +	int dev_id, flag, ret;
>>>  
>>>  	flag = host->bus_width == 8 ? PINMUX_FLAG_8BIT_MODE :
>>> PINMUX_FLAG_NONE; dev_id = host->index + PERIPH_ID_SDMMC0;
>>>  
>>>  	if (dm_gpio_is_valid(&host->pwr_gpio)) {
>>>  		dm_gpio_set_value(&host->pwr_gpio, 1);
>>> -		err = exynos_pinmux_config(dev_id, flag);
>>> -		if (err) {
>>> +		ret = exynos_pinmux_config(dev_id, flag);
>>> +		if (ret) {
>>>  			debug("MMC not configured\n");
>>> -			return err;
>>> +			return ret;
>>>  		}
>>>  	}
>>>  
>>>  	if (dm_gpio_is_valid(&host->cd_gpio)) {
>>> -		if (dm_gpio_get_value(&host->cd_gpio))
>>> +		ret = dm_gpio_get_value(&host->cd_gpio);
>>> +		if (ret != 1) {
>>> +			debug("No card detected (%d)\n", ret);
>>>  			return -ENODEV;
>>> +		}
>>>  
>>> -		err = exynos_pinmux_config(dev_id, flag);
>>> -		if (err) {
>>> +		ret = exynos_pinmux_config(dev_id, flag);
>>> +		if (ret) {
>>>  			printf("external SD not configured\n");
>>> -			return err;
>>> +			return ret;
>>>  		}
>>>  	}
>>>  
>>
>> Reviewed-by: Lukasz Majewski <l.majewski@samsung.com>
>>
> 
> Sorry, I was too fast. I've read the whole thread and I can confirm
> that your change would break Trats board.
> ry
> I hope that we will come up with proper solution.

We can use the "cd-inverted" property like linux-kernel.
Then i think that all board based on exynos4412 can cover.
how about?

Best Regards,
Jaehoon Chung


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