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mmc: mtk-sd: add a dts property cd-active-high for builtin-cd mode

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This patch adds a dts property cd-active-high for builtin-cd mode to make
it configurable instead of using hardcoded active-low.

Signed-off-by: Weijie Gao <weijie.gao@mediatek.com>
This commit is contained in:
Weijie Gao
2019-09-25 17:45:38 +08:00
committed by Daniel Schwierzeck
parent 3c92a957ee
commit 77ebea23c3
1 changed files with 5 additions and 1 deletions
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6
drivers/mmc/mtk-sd.c
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@@ -270,6 +270,7 @@ struct msdc_host {
/* whether to use gpio detection or built-in hw detection */ /* whether to use gpio detection or built-in hw detection */
bool builtin_cd; bool builtin_cd;
bool cd_active_high;
/* card detection / write protection GPIOs */ /* card detection / write protection GPIOs */
#if CONFIG_IS_ENABLED(DM_GPIO) #if CONFIG_IS_ENABLED(DM_GPIO)
@@ -852,7 +853,9 @@ static int msdc_ops_get_cd(struct udevice *dev)
if (host->builtin_cd) { if (host->builtin_cd) {
val = readl(&host->base->msdc_ps); val = readl(&host->base->msdc_ps);
return !(val & MSDC_PS_CDSTS); val = !!(val & MSDC_PS_CDSTS);
return !val ^ host->cd_active_high;
} }
#if CONFIG_IS_ENABLED(DM_GPIO) #if CONFIG_IS_ENABLED(DM_GPIO)
@@ -1355,6 +1358,7 @@ static int msdc_ofdata_to_platdata(struct udevice *dev)
host->latch_ck = dev_read_u32_default(dev, "latch-ck", 0); host->latch_ck = dev_read_u32_default(dev, "latch-ck", 0);
host->r_smpl = dev_read_u32_default(dev, "r_smpl", 0); host->r_smpl = dev_read_u32_default(dev, "r_smpl", 0);
host->builtin_cd = dev_read_u32_default(dev, "builtin-cd", 0); host->builtin_cd = dev_read_u32_default(dev, "builtin-cd", 0);
host->cd_active_high = dev_read_bool(dev, "cd-active-high");
return 0; return 0;
} }