From 019e442bb0d5e7f25ada8eb4252e22e62d17a95e Mon Sep 17 00:00:00 2001 From: Axe Yang Date: Tue, 26 Jul 2022 14:28:41 +0800 Subject: mmc: core: Add support for SDIO wakeup interrupt If wakeup-source flag is set in host dts node, parse EAI information from SDIO CCCR interrupt externsion segment for in-band wakeup. If async interrupt is supported by SDIO card then enable it and set enable_async_irq flag in sdio_cccr structure to 1. The parse flow is implemented in sdio_read_cccr(). Reviewed-by: AngeloGioacchino Del Regno Signed-off-by: Axe Yang Link: https://lore.kernel.org/r/20220726062842.18846-3-axe.yang@mediatek.com Signed-off-by: Ulf Hansson --- include/linux/mmc/card.h | 8 +++++++- include/linux/mmc/sdio.h | 5 +++++ 2 files changed, 12 insertions(+), 1 deletion(-) (limited to 'include/linux/mmc') diff --git a/include/linux/mmc/card.h b/include/linux/mmc/card.h index 156a7b673a28..8a30de08e913 100644 --- a/include/linux/mmc/card.h +++ b/include/linux/mmc/card.h @@ -219,7 +219,8 @@ struct sdio_cccr { wide_bus:1, high_power:1, high_speed:1, - disable_cd:1; + disable_cd:1, + enable_async_irq:1; }; struct sdio_cis { @@ -343,6 +344,11 @@ static inline bool mmc_large_sector(struct mmc_card *card) return card->ext_csd.data_sector_size == 4096; } +static inline int mmc_card_enable_async_irq(struct mmc_card *card) +{ + return card->cccr.enable_async_irq; +} + bool mmc_card_is_blockaddr(struct mmc_card *card); #define mmc_card_mmc(c) ((c)->type == MMC_TYPE_MMC) diff --git a/include/linux/mmc/sdio.h b/include/linux/mmc/sdio.h index 2a05d1ac4f0e..1ef400f28642 100644 --- a/include/linux/mmc/sdio.h +++ b/include/linux/mmc/sdio.h @@ -159,6 +159,11 @@ #define SDIO_DTSx_SET_TYPE_A (1 << SDIO_DRIVE_DTSx_SHIFT) #define SDIO_DTSx_SET_TYPE_C (2 << SDIO_DRIVE_DTSx_SHIFT) #define SDIO_DTSx_SET_TYPE_D (3 << SDIO_DRIVE_DTSx_SHIFT) + +#define SDIO_CCCR_INTERRUPT_EXT 0x16 +#define SDIO_INTERRUPT_EXT_SAI (1 << 0) +#define SDIO_INTERRUPT_EXT_EAI (1 << 1) + /* * Function Basic Registers (FBR) */ -- cgit v1.2.3-70-g09d2