On 20 March 2015 at 15:53, Andreas Fenkart <[email protected]> wrote:
> board-rx51 has no card detect pin in the mmc slot, but can detect that
> the (cell-phone) cover has been removed and the card is accessible.
> The semantics between cover/card detect differ, the gpio on the slot
> informs you after the card has been removed, cover removal does not
> necessarily mean that the card has been removed.
> This means different code paths are necessary. To complete this we
> also want different fields in the platform data for cover and card
> detect. This separation is not pushed all the way down into struct
> omap2_hsmmc_info which is used to initialize the platform data.
> If we did that we had to go over all board files and set the new
> gpio_cod pin to -EINVAL. If we forget one board or some out-of-tree
> archicture forgets that the default '0' is used which is a valid pin
> number.
>
> Signed-off-by: Andreas Fenkart <[email protected]>
Tony, are you fine with this change? I believe I should take it
through my mmc tree due to that I have other omap_hsmmc patches
already queued.
Kind regards
Uffe
> ---
> arch/arm/mach-omap2/hsmmc.c | 33
> ++++++++++++++++++++++++--------
> drivers/mmc/host/omap_hsmmc.c | 11 ++++++-----
> include/linux/platform_data/hsmmc-omap.h | 6 ++----
> 3 files changed, 33 insertions(+), 17 deletions(-)
>
> diff --git a/arch/arm/mach-omap2/hsmmc.c b/arch/arm/mach-omap2/hsmmc.c
> index dc6e79c..9a8611a 100644
> --- a/arch/arm/mach-omap2/hsmmc.c
> +++ b/arch/arm/mach-omap2/hsmmc.c
> @@ -150,9 +150,13 @@ static int nop_mmc_set_power(struct device *dev, int
> power_on, int vdd)
> static inline void omap_hsmmc_mux(struct omap_hsmmc_platform_data
> *mmc_controller, int controller_nr)
> {
> - if (gpio_is_valid(mmc_controller->switch_pin) &&
> - (mmc_controller->switch_pin < OMAP_MAX_GPIO_LINES))
> - omap_mux_init_gpio(mmc_controller->switch_pin,
> + if (gpio_is_valid(mmc_controller->gpio_cd) &&
> + (mmc_controller->gpio_cd < OMAP_MAX_GPIO_LINES))
> + omap_mux_init_gpio(mmc_controller->gpio_cd,
> + OMAP_PIN_INPUT_PULLUP);
> + if (gpio_is_valid(mmc_controller->gpio_cod) &&
> + (mmc_controller->gpio_cod < OMAP_MAX_GPIO_LINES))
> + omap_mux_init_gpio(mmc_controller->gpio_cod,
> OMAP_PIN_INPUT_PULLUP);
> if (gpio_is_valid(mmc_controller->gpio_wp) &&
> (mmc_controller->gpio_wp < OMAP_MAX_GPIO_LINES))
> @@ -250,15 +254,20 @@ static int __init omap_hsmmc_pdata_init(struct
> omap2_hsmmc_info *c,
> mmc->internal_clock = !c->ext_clock;
> mmc->reg_offset = 0;
>
> - mmc->switch_pin = c->gpio_cd;
> + if (c->cover_only) {
> + /* detect if mobile phone cover removed */
> + mmc->gpio_cd = -EINVAL;
> + mmc->gpio_cod = c->gpio_cd;
> + } else {
> + /* card detect pin on the mmc socket itself */
> + mmc->gpio_cd = c->gpio_cd;
> + mmc->gpio_cod = -EINVAL;
> + }
> mmc->gpio_wp = c->gpio_wp;
>
> mmc->remux = c->remux;
> mmc->init_card = c->init_card;
>
> - if (c->cover_only)
> - mmc->cover = 1;
> -
> if (c->nonremovable)
> mmc->nonremovable = 1;
>
> @@ -358,7 +367,15 @@ void omap_hsmmc_late_init(struct omap2_hsmmc_info *c)
> if (!mmc_pdata)
> continue;
>
> - mmc_pdata->switch_pin = c->gpio_cd;
> + if (c->cover_only) {
> + /* detect if mobile phone cover removed */
> + mmc_pdata->gpio_cd = -EINVAL;
> + mmc_pdata->gpio_cod = c->gpio_cd;
> + } else {
> + /* card detect pin on the mmc socket itself */
> + mmc_pdata->gpio_cd = c->gpio_cd;
> + mmc_pdata->gpio_cod = -EINVAL;
> + }
> mmc_pdata->gpio_wp = c->gpio_wp;
>
> res = omap_device_register(pdev);
> diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c
> index 053cd38..265391f 100644
> --- a/drivers/mmc/host/omap_hsmmc.c
> +++ b/drivers/mmc/host/omap_hsmmc.c
> @@ -427,15 +427,15 @@ static int omap_hsmmc_gpio_init(struct mmc_host *mmc,
> {
> int ret;
>
> - if (pdata->cover && gpio_is_valid(pdata->switch_pin)) {
> - ret = mmc_gpio_request_cd(mmc, pdata->switch_pin, 0);
> + if (gpio_is_valid(pdata->gpio_cod)) {
> + ret = mmc_gpio_request_cd(mmc, pdata->gpio_cod, 0);
> if (ret)
> return ret;
>
> host->get_cover_state = omap_hsmmc_get_cover_state;
> mmc_gpio_set_cd_isr(mmc, omap_hsmmc_cover_irq);
> - } else if (!pdata->cover && gpio_is_valid(pdata->switch_pin)) {
> - ret = mmc_gpio_request_cd(mmc, pdata->switch_pin, 0);
> + } else if (gpio_is_valid(pdata->gpio_cd)) {
> + ret = mmc_gpio_request_cd(mmc, pdata->gpio_cd, 0);
> if (ret)
> return ret;
>
> @@ -1932,7 +1932,8 @@ static struct omap_hsmmc_platform_data
> *of_get_hsmmc_pdata(struct device *dev)
> if (of_find_property(np, "ti,dual-volt", NULL))
> pdata->controller_flags |= OMAP_HSMMC_SUPPORTS_DUAL_VOLT;
>
> - pdata->switch_pin = -EINVAL;
> + pdata->gpio_cd = -EINVAL;
> + pdata->gpio_cod = -EINVAL;
> pdata->gpio_wp = -EINVAL;
>
> if (of_find_property(np, "ti,non-removable", NULL)) {
> diff --git a/include/linux/platform_data/hsmmc-omap.h
> b/include/linux/platform_data/hsmmc-omap.h
> index 67bbcf0..8e981be 100644
> --- a/include/linux/platform_data/hsmmc-omap.h
> +++ b/include/linux/platform_data/hsmmc-omap.h
> @@ -55,9 +55,6 @@ struct omap_hsmmc_platform_data {
> u32 caps; /* Used for the MMC driver on 2430 and later */
> u32 pm_caps; /* PM capabilities of the mmc */
>
> - /* switch pin can be for card detect (default) or card cover */
> - unsigned cover:1;
> -
> /* use the internal clock */
> unsigned internal_clock:1;
>
> @@ -73,7 +70,8 @@ struct omap_hsmmc_platform_data {
> #define HSMMC_HAS_HSPE_SUPPORT (1 << 2)
> unsigned features;
>
> - int switch_pin; /* gpio (card detect) */
> + int gpio_cd; /* gpio (card detect) */
> + int gpio_cod; /* gpio (cover detect) */
> int gpio_wp; /* gpio (write protect) */
>
> int (*set_power)(struct device *dev, int power_on, int vdd);
> --
> 2.1.4
>
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