diff options
Diffstat (limited to '')
| -rw-r--r-- | drivers/mmc/host/mtk-sd.c | 554 |
1 files changed, 290 insertions, 264 deletions
diff --git a/drivers/mmc/host/mtk-sd.c b/drivers/mmc/host/mtk-sd.c index 943940b44e83..65037e1d7723 100644 --- a/drivers/mmc/host/mtk-sd.c +++ b/drivers/mmc/host/mtk-sd.c @@ -5,6 +5,7 @@ */ #include <linux/module.h> +#include <linux/bitops.h> #include <linux/clk.h> #include <linux/delay.h> #include <linux/dma-mapping.h> @@ -98,226 +99,226 @@ /*--------------------------------------------------------------------------*/ /* MSDC_CFG mask */ -#define MSDC_CFG_MODE (0x1 << 0) /* RW */ -#define MSDC_CFG_CKPDN (0x1 << 1) /* RW */ -#define MSDC_CFG_RST (0x1 << 2) /* RW */ -#define MSDC_CFG_PIO (0x1 << 3) /* RW */ -#define MSDC_CFG_CKDRVEN (0x1 << 4) /* RW */ -#define MSDC_CFG_BV18SDT (0x1 << 5) /* RW */ -#define MSDC_CFG_BV18PSS (0x1 << 6) /* R */ -#define MSDC_CFG_CKSTB (0x1 << 7) /* R */ -#define MSDC_CFG_CKDIV (0xff << 8) /* RW */ -#define MSDC_CFG_CKMOD (0x3 << 16) /* RW */ -#define MSDC_CFG_HS400_CK_MODE (0x1 << 18) /* RW */ -#define MSDC_CFG_HS400_CK_MODE_EXTRA (0x1 << 22) /* RW */ -#define MSDC_CFG_CKDIV_EXTRA (0xfff << 8) /* RW */ -#define MSDC_CFG_CKMOD_EXTRA (0x3 << 20) /* RW */ +#define MSDC_CFG_MODE BIT(0) /* RW */ +#define MSDC_CFG_CKPDN BIT(1) /* RW */ +#define MSDC_CFG_RST BIT(2) /* RW */ +#define MSDC_CFG_PIO BIT(3) /* RW */ +#define MSDC_CFG_CKDRVEN BIT(4) /* RW */ +#define MSDC_CFG_BV18SDT BIT(5) /* RW */ +#define MSDC_CFG_BV18PSS BIT(6) /* R */ +#define MSDC_CFG_CKSTB BIT(7) /* R */ +#define MSDC_CFG_CKDIV GENMASK(15, 8) /* RW */ +#define MSDC_CFG_CKMOD GENMASK(17, 16) /* RW */ +#define MSDC_CFG_HS400_CK_MODE BIT(18) /* RW */ +#define MSDC_CFG_HS400_CK_MODE_EXTRA BIT(22) /* RW */ +#define MSDC_CFG_CKDIV_EXTRA GENMASK(19, 8) /* RW */ +#define MSDC_CFG_CKMOD_EXTRA GENMASK(21, 20) /* RW */ /* MSDC_IOCON mask */ -#define MSDC_IOCON_SDR104CKS (0x1 << 0) /* RW */ -#define MSDC_IOCON_RSPL (0x1 << 1) /* RW */ -#define MSDC_IOCON_DSPL (0x1 << 2) /* RW */ -#define MSDC_IOCON_DDLSEL (0x1 << 3) /* RW */ -#define MSDC_IOCON_DDR50CKD (0x1 << 4) /* RW */ -#define MSDC_IOCON_DSPLSEL (0x1 << 5) /* RW */ -#define MSDC_IOCON_W_DSPL (0x1 << 8) /* RW */ -#define MSDC_IOCON_D0SPL (0x1 << 16) /* RW */ -#define MSDC_IOCON_D1SPL (0x1 << 17) /* RW */ -#define MSDC_IOCON_D2SPL (0x1 << 18) /* RW */ -#define MSDC_IOCON_D3SPL (0x1 << 19) /* RW */ -#define MSDC_IOCON_D4SPL (0x1 << 20) /* RW */ -#define MSDC_IOCON_D5SPL (0x1 << 21) /* RW */ -#define MSDC_IOCON_D6SPL (0x1 << 22) /* RW */ -#define MSDC_IOCON_D7SPL (0x1 << 23) /* RW */ -#define MSDC_IOCON_RISCSZ (0x3 << 24) /* RW */ +#define MSDC_IOCON_SDR104CKS BIT(0) /* RW */ +#define MSDC_IOCON_RSPL BIT(1) /* RW */ +#define MSDC_IOCON_DSPL BIT(2) /* RW */ +#define MSDC_IOCON_DDLSEL BIT(3) /* RW */ +#define MSDC_IOCON_DDR50CKD BIT(4) /* RW */ +#define MSDC_IOCON_DSPLSEL BIT(5) /* RW */ +#define MSDC_IOCON_W_DSPL BIT(8) /* RW */ +#define MSDC_IOCON_D0SPL BIT(16) /* RW */ +#define MSDC_IOCON_D1SPL BIT(17) /* RW */ +#define MSDC_IOCON_D2SPL BIT(18) /* RW */ +#define MSDC_IOCON_D3SPL BIT(19) /* RW */ +#define MSDC_IOCON_D4SPL BIT(20) /* RW */ +#define MSDC_IOCON_D5SPL BIT(21) /* RW */ +#define MSDC_IOCON_D6SPL BIT(22) /* RW */ +#define MSDC_IOCON_D7SPL BIT(23) /* RW */ +#define MSDC_IOCON_RISCSZ GENMASK(25, 24) /* RW */ /* MSDC_PS mask */ -#define MSDC_PS_CDEN (0x1 << 0) /* RW */ -#define MSDC_PS_CDSTS (0x1 << 1) /* R */ -#define MSDC_PS_CDDEBOUNCE (0xf << 12) /* RW */ -#define MSDC_PS_DAT (0xff << 16) /* R */ -#define MSDC_PS_DATA1 (0x1 << 17) /* R */ -#define MSDC_PS_CMD (0x1 << 24) /* R */ -#define MSDC_PS_WP (0x1 << 31) /* R */ +#define MSDC_PS_CDEN BIT(0) /* RW */ +#define MSDC_PS_CDSTS BIT(1) /* R */ +#define MSDC_PS_CDDEBOUNCE GENMASK(15, 12) /* RW */ +#define MSDC_PS_DAT GENMASK(23, 16) /* R */ +#define MSDC_PS_DATA1 BIT(17) /* R */ +#define MSDC_PS_CMD BIT(24) /* R */ +#define MSDC_PS_WP BIT(31) /* R */ /* MSDC_INT mask */ -#define MSDC_INT_MMCIRQ (0x1 << 0) /* W1C */ -#define MSDC_INT_CDSC (0x1 << 1) /* W1C */ -#define MSDC_INT_ACMDRDY (0x1 << 3) /* W1C */ -#define MSDC_INT_ACMDTMO (0x1 << 4) /* W1C */ -#define MSDC_INT_ACMDCRCERR (0x1 << 5) /* W1C */ -#define MSDC_INT_DMAQ_EMPTY (0x1 << 6) /* W1C */ -#define MSDC_INT_SDIOIRQ (0x1 << 7) /* W1C */ -#define MSDC_INT_CMDRDY (0x1 << 8) /* W1C */ -#define MSDC_INT_CMDTMO (0x1 << 9) /* W1C */ -#define MSDC_INT_RSPCRCERR (0x1 << 10) /* W1C */ -#define MSDC_INT_CSTA (0x1 << 11) /* R */ -#define MSDC_INT_XFER_COMPL (0x1 << 12) /* W1C */ -#define MSDC_INT_DXFER_DONE (0x1 << 13) /* W1C */ -#define MSDC_INT_DATTMO (0x1 << 14) /* W1C */ -#define MSDC_INT_DATCRCERR (0x1 << 15) /* W1C */ -#define MSDC_INT_ACMD19_DONE (0x1 << 16) /* W1C */ -#define MSDC_INT_DMA_BDCSERR (0x1 << 17) /* W1C */ -#define MSDC_INT_DMA_GPDCSERR (0x1 << 18) /* W1C */ -#define MSDC_INT_DMA_PROTECT (0x1 << 19) /* W1C */ -#define MSDC_INT_CMDQ (0x1 << 28) /* W1C */ +#define MSDC_INT_MMCIRQ BIT(0) /* W1C */ +#define MSDC_INT_CDSC BIT(1) /* W1C */ +#define MSDC_INT_ACMDRDY BIT(3) /* W1C */ +#define MSDC_INT_ACMDTMO BIT(4) /* W1C */ +#define MSDC_INT_ACMDCRCERR BIT(5) /* W1C */ +#define MSDC_INT_DMAQ_EMPTY BIT(6) /* W1C */ +#define MSDC_INT_SDIOIRQ BIT(7) /* W1C */ +#define MSDC_INT_CMDRDY BIT(8) /* W1C */ +#define MSDC_INT_CMDTMO BIT(9) /* W1C */ +#define MSDC_INT_RSPCRCERR BIT(10) /* W1C */ +#define MSDC_INT_CSTA BIT(11) /* R */ +#define MSDC_INT_XFER_COMPL BIT(12) /* W1C */ +#define MSDC_INT_DXFER_DONE BIT(13) /* W1C */ +#define MSDC_INT_DATTMO BIT(14) /* W1C */ +#define MSDC_INT_DATCRCERR BIT(15) /* W1C */ +#define MSDC_INT_ACMD19_DONE BIT(16) /* W1C */ +#define MSDC_INT_DMA_BDCSERR BIT(17) /* W1C */ +#define MSDC_INT_DMA_GPDCSERR BIT(18) /* W1C */ +#define MSDC_INT_DMA_PROTECT BIT(19) /* W1C */ +#define MSDC_INT_CMDQ BIT(28) /* W1C */ /* MSDC_INTEN mask */ -#define MSDC_INTEN_MMCIRQ (0x1 << 0) /* RW */ -#define MSDC_INTEN_CDSC (0x1 << 1) /* RW */ -#define MSDC_INTEN_ACMDRDY (0x1 << 3) /* RW */ -#define MSDC_INTEN_ACMDTMO (0x1 << 4) /* RW */ -#define MSDC_INTEN_ACMDCRCERR (0x1 << 5) /* RW */ -#define MSDC_INTEN_DMAQ_EMPTY (0x1 << 6) /* RW */ -#define MSDC_INTEN_SDIOIRQ (0x1 << 7) /* RW */ -#define MSDC_INTEN_CMDRDY (0x1 << 8) /* RW */ -#define MSDC_INTEN_CMDTMO (0x1 << 9) /* RW */ -#define MSDC_INTEN_RSPCRCERR (0x1 << 10) /* RW */ -#define MSDC_INTEN_CSTA (0x1 << 11) /* RW */ -#define MSDC_INTEN_XFER_COMPL (0x1 << 12) /* RW */ -#define MSDC_INTEN_DXFER_DONE (0x1 << 13) /* RW */ -#define MSDC_INTEN_DATTMO (0x1 << 14) /* RW */ -#define MSDC_INTEN_DATCRCERR (0x1 << 15) /* RW */ -#define MSDC_INTEN_ACMD19_DONE (0x1 << 16) /* RW */ -#define MSDC_INTEN_DMA_BDCSERR (0x1 << 17) /* RW */ -#define MSDC_INTEN_DMA_GPDCSERR (0x1 << 18) /* RW */ -#define MSDC_INTEN_DMA_PROTECT (0x1 << 19) /* RW */ +#define MSDC_INTEN_MMCIRQ BIT(0) /* RW */ +#define MSDC_INTEN_CDSC BIT(1) /* RW */ +#define MSDC_INTEN_ACMDRDY BIT(3) /* RW */ +#define MSDC_INTEN_ACMDTMO BIT(4) /* RW */ +#define MSDC_INTEN_ACMDCRCERR BIT(5) /* RW */ +#define MSDC_INTEN_DMAQ_EMPTY BIT(6) /* RW */ +#define MSDC_INTEN_SDIOIRQ BIT(7) /* RW */ +#define MSDC_INTEN_CMDRDY BIT(8) /* RW */ +#define MSDC_INTEN_CMDTMO BIT(9) /* RW */ +#define MSDC_INTEN_RSPCRCERR BIT(10) /* RW */ +#define MSDC_INTEN_CSTA BIT(11) /* RW */ +#define MSDC_INTEN_XFER_COMPL BIT(12) /* RW */ +#define MSDC_INTEN_DXFER_DONE BIT(13) /* RW */ +#define MSDC_INTEN_DATTMO BIT(14) /* RW */ +#define MSDC_INTEN_DATCRCERR BIT(15) /* RW */ +#define MSDC_INTEN_ACMD19_DONE BIT(16) /* RW */ +#define MSDC_INTEN_DMA_BDCSERR BIT(17) /* RW */ +#define MSDC_INTEN_DMA_GPDCSERR BIT(18) /* RW */ +#define MSDC_INTEN_DMA_PROTECT BIT(19) /* RW */ /* MSDC_FIFOCS mask */ -#define MSDC_FIFOCS_RXCNT (0xff << 0) /* R */ -#define MSDC_FIFOCS_TXCNT (0xff << 16) /* R */ -#define MSDC_FIFOCS_CLR (0x1 << 31) /* RW */ +#define MSDC_FIFOCS_RXCNT GENMASK(7, 0) /* R */ +#define MSDC_FIFOCS_TXCNT GENMASK(23, 16) /* R */ +#define MSDC_FIFOCS_CLR BIT(31) /* RW */ /* SDC_CFG mask */ -#define SDC_CFG_SDIOINTWKUP (0x1 << 0) /* RW */ -#define SDC_CFG_INSWKUP (0x1 << 1) /* RW */ -#define SDC_CFG_WRDTOC (0x1fff << 2) /* RW */ -#define SDC_CFG_BUSWIDTH (0x3 << 16) /* RW */ -#define SDC_CFG_SDIO (0x1 << 19) /* RW */ -#define SDC_CFG_SDIOIDE (0x1 << 20) /* RW */ -#define SDC_CFG_INTATGAP (0x1 << 21) /* RW */ -#define SDC_CFG_DTOC (0xff << 24) /* RW */ +#define SDC_CFG_SDIOINTWKUP BIT(0) /* RW */ +#define SDC_CFG_INSWKUP BIT(1) /* RW */ +#define SDC_CFG_WRDTOC GENMASK(14, 2) /* RW */ +#define SDC_CFG_BUSWIDTH GENMASK(17, 16) /* RW */ +#define SDC_CFG_SDIO BIT(19) /* RW */ +#define SDC_CFG_SDIOIDE BIT(20) /* RW */ +#define SDC_CFG_INTATGAP BIT(21) /* RW */ +#define SDC_CFG_DTOC GENMASK(31, 24) /* RW */ /* SDC_STS mask */ -#define SDC_STS_SDCBUSY (0x1 << 0) /* RW */ -#define SDC_STS_CMDBUSY (0x1 << 1) /* RW */ -#define SDC_STS_SWR_COMPL (0x1 << 31) /* RW */ +#define SDC_STS_SDCBUSY BIT(0) /* RW */ +#define SDC_STS_CMDBUSY BIT(1) /* RW */ +#define SDC_STS_SWR_COMPL BIT(31) /* RW */ -#define SDC_DAT1_IRQ_TRIGGER (0x1 << 19) /* RW */ +#define SDC_DAT1_IRQ_TRIGGER BIT(19) /* RW */ /* SDC_ADV_CFG0 mask */ -#define SDC_RX_ENHANCE_EN (0x1 << 20) /* RW */ +#define SDC_RX_ENHANCE_EN BIT(20) /* RW */ /* DMA_SA_H4BIT mask */ -#define DMA_ADDR_HIGH_4BIT (0xf << 0) /* RW */ +#define DMA_ADDR_HIGH_4BIT GENMASK(3, 0) /* RW */ /* MSDC_DMA_CTRL mask */ -#define MSDC_DMA_CTRL_START (0x1 << 0) /* W */ -#define MSDC_DMA_CTRL_STOP (0x1 << 1) /* W */ -#define MSDC_DMA_CTRL_RESUME (0x1 << 2) /* W */ -#define MSDC_DMA_CTRL_MODE (0x1 << 8) /* RW */ -#define MSDC_DMA_CTRL_LASTBUF (0x1 << 10) /* RW */ -#define MSDC_DMA_CTRL_BRUSTSZ (0x7 << 12) /* RW */ +#define MSDC_DMA_CTRL_START BIT(0) /* W */ +#define MSDC_DMA_CTRL_STOP BIT(1) /* W */ +#define MSDC_DMA_CTRL_RESUME BIT(2) /* W */ +#define MSDC_DMA_CTRL_MODE BIT(8) /* RW */ +#define MSDC_DMA_CTRL_LASTBUF BIT(10) /* RW */ +#define MSDC_DMA_CTRL_BRUSTSZ GENMASK(14, 12) /* RW */ /* MSDC_DMA_CFG mask */ -#define MSDC_DMA_CFG_STS (0x1 << 0) /* R */ -#define MSDC_DMA_CFG_DECSEN (0x1 << 1) /* RW */ -#define MSDC_DMA_CFG_AHBHPROT2 (0x2 << 8) /* RW */ -#define MSDC_DMA_CFG_ACTIVEEN (0x2 << 12) /* RW */ -#define MSDC_DMA_CFG_CS12B16B (0x1 << 16) /* RW */ +#define MSDC_DMA_CFG_STS BIT(0) /* R */ +#define MSDC_DMA_CFG_DECSEN BIT(1) /* RW */ +#define MSDC_DMA_CFG_AHBHPROT2 BIT(9) /* RW */ +#define MSDC_DMA_CFG_ACTIVEEN BIT(13) /* RW */ +#define MSDC_DMA_CFG_CS12B16B BIT(16) /* RW */ /* MSDC_PATCH_BIT mask */ -#define MSDC_PATCH_BIT_ODDSUPP (0x1 << 1) /* RW */ -#define MSDC_INT_DAT_LATCH_CK_SEL (0x7 << 7) -#define MSDC_CKGEN_MSDC_DLY_SEL (0x1f << 10) -#define MSDC_PATCH_BIT_IODSSEL (0x1 << 16) /* RW */ -#define MSDC_PATCH_BIT_IOINTSEL (0x1 << 17) /* RW */ -#define MSDC_PATCH_BIT_BUSYDLY (0xf << 18) /* RW */ -#define MSDC_PATCH_BIT_WDOD (0xf << 22) /* RW */ -#define MSDC_PATCH_BIT_IDRTSEL (0x1 << 26) /* RW */ -#define MSDC_PATCH_BIT_CMDFSEL (0x1 << 27) /* RW */ -#define MSDC_PATCH_BIT_INTDLSEL (0x1 << 28) /* RW */ -#define MSDC_PATCH_BIT_SPCPUSH (0x1 << 29) /* RW */ -#define MSDC_PATCH_BIT_DECRCTMO (0x1 << 30) /* RW */ - -#define MSDC_PATCH_BIT1_CMDTA (0x7 << 3) /* RW */ -#define MSDC_PB1_BUSY_CHECK_SEL (0x1 << 7) /* RW */ -#define MSDC_PATCH_BIT1_STOP_DLY (0xf << 8) /* RW */ - -#define MSDC_PATCH_BIT2_CFGRESP (0x1 << 15) /* RW */ -#define MSDC_PATCH_BIT2_CFGCRCSTS (0x1 << 28) /* RW */ -#define MSDC_PB2_SUPPORT_64G (0x1 << 1) /* RW */ -#define MSDC_PB2_RESPWAIT (0x3 << 2) /* RW */ -#define MSDC_PB2_RESPSTSENSEL (0x7 << 16) /* RW */ -#define MSDC_PB2_CRCSTSENSEL (0x7 << 29) /* RW */ - -#define MSDC_PAD_TUNE_DATWRDLY (0x1f << 0) /* RW */ -#define MSDC_PAD_TUNE_DATRRDLY (0x1f << 8) /* RW */ -#define MSDC_PAD_TUNE_CMDRDLY (0x1f << 16) /* RW */ -#define MSDC_PAD_TUNE_CMDRRDLY (0x1f << 22) /* RW */ -#define MSDC_PAD_TUNE_CLKTDLY (0x1f << 27) /* RW */ -#define MSDC_PAD_TUNE_RXDLYSEL (0x1 << 15) /* RW */ -#define MSDC_PAD_TUNE_RD_SEL (0x1 << 13) /* RW */ -#define MSDC_PAD_TUNE_CMD_SEL (0x1 << 21) /* RW */ - -#define PAD_DS_TUNE_DLY_SEL (0x1 << 0) /* RW */ -#define PAD_DS_TUNE_DLY1 (0x1f << 2) /* RW */ -#define PAD_DS_TUNE_DLY2 (0x1f << 7) /* RW */ -#define PAD_DS_TUNE_DLY3 (0x1f << 12) /* RW */ - -#define PAD_CMD_TUNE_RX_DLY3 (0x1f << 1) /* RW */ +#define MSDC_PATCH_BIT_ODDSUPP BIT(1) /* RW */ +#define MSDC_INT_DAT_LATCH_CK_SEL GENMASK(9, 7) +#define MSDC_CKGEN_MSDC_DLY_SEL GENMASK(14, 10) +#define MSDC_PATCH_BIT_IODSSEL BIT(16) /* RW */ +#define MSDC_PATCH_BIT_IOINTSEL BIT(17) /* RW */ +#define MSDC_PATCH_BIT_BUSYDLY GENMASK(21, 18) /* RW */ +#define MSDC_PATCH_BIT_WDOD GENMASK(25, 22) /* RW */ +#define MSDC_PATCH_BIT_IDRTSEL BIT(26) /* RW */ +#define MSDC_PATCH_BIT_CMDFSEL BIT(27) /* RW */ +#define MSDC_PATCH_BIT_INTDLSEL BIT(28) /* RW */ +#define MSDC_PATCH_BIT_SPCPUSH BIT(29) /* RW */ +#define MSDC_PATCH_BIT_DECRCTMO BIT(30) /* RW */ + +#define MSDC_PATCH_BIT1_CMDTA GENMASK(5, 3) /* RW */ +#define MSDC_PB1_BUSY_CHECK_SEL BIT(7) /* RW */ +#define MSDC_PATCH_BIT1_STOP_DLY GENMASK(11, 8) /* RW */ + +#define MSDC_PATCH_BIT2_CFGRESP BIT(15) /* RW */ +#define MSDC_PATCH_BIT2_CFGCRCSTS BIT(28) /* RW */ +#define MSDC_PB2_SUPPORT_64G BIT(1) /* RW */ +#define MSDC_PB2_RESPWAIT GENMASK(3, 2) /* RW */ +#define MSDC_PB2_RESPSTSENSEL GENMASK(18, 16) /* RW */ +#define MSDC_PB2_CRCSTSENSEL GENMASK(31, 29) /* RW */ + +#define MSDC_PAD_TUNE_DATWRDLY GENMASK(4, 0) /* RW */ +#define MSDC_PAD_TUNE_DATRRDLY GENMASK(12, 8) /* RW */ +#define MSDC_PAD_TUNE_CMDRDLY GENMASK(20, 16) /* RW */ +#define MSDC_PAD_TUNE_CMDRRDLY GENMASK(26, 22) /* RW */ +#define MSDC_PAD_TUNE_CLKTDLY GENMASK(31, 27) /* RW */ +#define MSDC_PAD_TUNE_RXDLYSEL BIT(15) /* RW */ +#define MSDC_PAD_TUNE_RD_SEL BIT(13) /* RW */ +#define MSDC_PAD_TUNE_CMD_SEL BIT(21) /* RW */ + +#define PAD_DS_TUNE_DLY_SEL BIT(0) /* RW */ +#define PAD_DS_TUNE_DLY1 GENMASK(6, 2) /* RW */ +#define PAD_DS_TUNE_DLY2 GENMASK(11, 7) /* RW */ +#define PAD_DS_TUNE_DLY3 GENMASK(16, 12) /* RW */ + +#define PAD_CMD_TUNE_RX_DLY3 GENMASK(5, 1) /* RW */ /* EMMC51_CFG0 mask */ -#define CMDQ_RDAT_CNT (0x3ff << 12) /* RW */ +#define CMDQ_RDAT_CNT GENMASK(21, 12) /* RW */ -#define EMMC50_CFG_PADCMD_LATCHCK (0x1 << 0) /* RW */ -#define EMMC50_CFG_CRCSTS_EDGE (0x1 << 3) /* RW */ -#define EMMC50_CFG_CFCSTS_SEL (0x1 << 4) /* RW */ -#define EMMC50_CFG_CMD_RESP_SEL (0x1 << 9) /* RW */ +#define EMMC50_CFG_PADCMD_LATCHCK BIT(0) /* RW */ +#define EMMC50_CFG_CRCSTS_EDGE BIT(3) /* RW */ +#define EMMC50_CFG_CFCSTS_SEL BIT(4) /* RW */ +#define EMMC50_CFG_CMD_RESP_SEL BIT(9) /* RW */ /* EMMC50_CFG1 mask */ -#define EMMC50_CFG1_DS_CFG (0x1 << 28) /* RW */ +#define EMMC50_CFG1_DS_CFG BIT(28) /* RW */ -#define EMMC50_CFG3_OUTS_WR (0x1f << 0) /* RW */ +#define EMMC50_CFG3_OUTS_WR GENMASK(4, 0) /* RW */ -#define SDC_FIFO_CFG_WRVALIDSEL (0x1 << 24) /* RW */ -#define SDC_FIFO_CFG_RDVALIDSEL (0x1 << 25) /* RW */ +#define SDC_FIFO_CFG_WRVALIDSEL BIT(24) /* RW */ +#define SDC_FIFO_CFG_RDVALIDSEL BIT(25) /* RW */ /* CQHCI_SETTING */ -#define CQHCI_RD_CMD_WND_SEL (0x1 << 14) /* RW */ -#define CQHCI_WR_CMD_WND_SEL (0x1 << 15) /* RW */ +#define CQHCI_RD_CMD_WND_SEL BIT(14) /* RW */ +#define CQHCI_WR_CMD_WND_SEL BIT(15) /* RW */ /* EMMC_TOP_CONTROL mask */ -#define PAD_RXDLY_SEL (0x1 << 0) /* RW */ -#define DELAY_EN (0x1 << 1) /* RW */ -#define PAD_DAT_RD_RXDLY2 (0x1f << 2) /* RW */ -#define PAD_DAT_RD_RXDLY (0x1f << 7) /* RW */ -#define PAD_DAT_RD_RXDLY2_SEL (0x1 << 12) /* RW */ -#define PAD_DAT_RD_RXDLY_SEL (0x1 << 13) /* RW */ -#define DATA_K_VALUE_SEL (0x1 << 14) /* RW */ -#define SDC_RX_ENH_EN (0x1 << 15) /* TW */ +#define PAD_RXDLY_SEL BIT(0) /* RW */ +#define DELAY_EN BIT(1) /* RW */ +#define PAD_DAT_RD_RXDLY2 GENMASK(6, 2) /* RW */ +#define PAD_DAT_RD_RXDLY GENMASK(11, 7) /* RW */ +#define PAD_DAT_RD_RXDLY2_SEL BIT(12) /* RW */ +#define PAD_DAT_RD_RXDLY_SEL BIT(13) /* RW */ +#define DATA_K_VALUE_SEL BIT(14) /* RW */ +#define SDC_RX_ENH_EN BIT(15) /* TW */ /* EMMC_TOP_CMD mask */ -#define PAD_CMD_RXDLY2 (0x1f << 0) /* RW */ -#define PAD_CMD_RXDLY (0x1f << 5) /* RW */ -#define PAD_CMD_RD_RXDLY2_SEL (0x1 << 10) /* RW */ -#define PAD_CMD_RD_RXDLY_SEL (0x1 << 11) /* RW */ -#define PAD_CMD_TX_DLY (0x1f << 12) /* RW */ +#define PAD_CMD_RXDLY2 GENMASK(4, 0) /* RW */ +#define PAD_CMD_RXDLY GENMASK(9, 5) /* RW */ +#define PAD_CMD_RD_RXDLY2_SEL BIT(10) /* RW */ +#define PAD_CMD_RD_RXDLY_SEL BIT(11) /* RW */ +#define PAD_CMD_TX_DLY GENMASK(16, 12) /* RW */ /* EMMC50_PAD_DS_TUNE mask */ -#define PAD_DS_DLY_SEL (0x1 << 16) /* RW */ -#define PAD_DS_DLY1 (0x1f << 10) /* RW */ -#define PAD_DS_DLY3 (0x1f << 0) /* RW */ +#define PAD_DS_DLY_SEL BIT(16) /* RW */ +#define PAD_DS_DLY1 GENMASK(14, 10) /* RW */ +#define PAD_DS_DLY3 GENMASK(4, 0) /* RW */ -#define REQ_CMD_EIO (0x1 << 0) -#define REQ_CMD_TMO (0x1 << 1) -#define REQ_DAT_ERR (0x1 << 2) -#define REQ_STOP_EIO (0x1 << 3) -#define REQ_STOP_TMO (0x1 << 4) -#define REQ_CMD_BUSY (0x1 << 5) +#define REQ_CMD_EIO BIT(0) +#define REQ_CMD_TMO BIT(1) +#define REQ_DAT_ERR BIT(2) +#define REQ_STOP_EIO BIT(3) +#define REQ_STOP_TMO BIT(4) +#define REQ_CMD_BUSY BIT(5) -#define MSDC_PREPARE_FLAG (0x1 << 0) -#define MSDC_ASYNC_FLAG (0x1 << 1) -#define MSDC_MMAP_FLAG (0x1 << 2) +#define MSDC_PREPARE_FLAG BIT(0) +#define MSDC_ASYNC_FLAG BIT(1) +#define MSDC_MMAP_FLAG BIT(2) #define MTK_MMC_AUTOSUSPEND_DELAY 50 #define CMD_TIMEOUT (HZ/10 * 5) /* 100ms x5 */ @@ -331,17 +332,17 @@ /*--------------------------------------------------------------------------*/ struct mt_gpdma_desc { u32 gpd_info; -#define GPDMA_DESC_HWO (0x1 << 0) -#define GPDMA_DESC_BDP (0x1 << 1) -#define GPDMA_DESC_CHECKSUM (0xff << 8) /* bit8 ~ bit15 */ -#define GPDMA_DESC_INT (0x1 << 16) -#define GPDMA_DESC_NEXT_H4 (0xf << 24) -#define GPDMA_DESC_PTR_H4 (0xf << 28) +#define GPDMA_DESC_HWO BIT(0) +#define GPDMA_DESC_BDP BIT(1) +#define GPDMA_DESC_CHECKSUM GENMASK(15, 8) +#define GPDMA_DESC_INT BIT(16) +#define GPDMA_DESC_NEXT_H4 GENMASK(27, 24) +#define GPDMA_DESC_PTR_H4 GENMASK(31, 28) u32 next; u32 ptr; u32 gpd_data_len; -#define GPDMA_DESC_BUFLEN (0xffff) /* bit0 ~ bit15 */ -#define GPDMA_DESC_EXTLEN (0xff << 16) /* bit16 ~ bit23 */ +#define GPDMA_DESC_BUFLEN GENMASK(15, 0) +#define GPDMA_DESC_EXTLEN GENMASK(23, 16) u32 arg; u32 blknum; u32 cmd; @@ -349,17 +350,17 @@ struct mt_gpdma_desc { struct mt_bdma_desc { u32 bd_info; -#define BDMA_DESC_EOL (0x1 << 0) -#define BDMA_DESC_CHECKSUM (0xff << 8) /* bit8 ~ bit15 */ -#define BDMA_DESC_BLKPAD (0x1 << 17) -#define BDMA_DESC_DWPAD (0x1 << 18) -#define BDMA_DESC_NEXT_H4 (0xf << 24) -#define BDMA_DESC_PTR_H4 (0xf << 28) +#define BDMA_DESC_EOL BIT(0) +#define BDMA_DESC_CHECKSUM GENMASK(15, 8) +#define BDMA_DESC_BLKPAD BIT(17) +#define BDMA_DESC_DWPAD BIT(18) +#define BDMA_DESC_NEXT_H4 GENMASK(27, 24) +#define BDMA_DESC_PTR_H4 GENMASK(31, 28) u32 next; u32 ptr; u32 bd_data_len; -#define BDMA_DESC_BUFLEN (0xffff) /* bit0 ~ bit15 */ -#define BDMA_DESC_BUFLEN_EXT (0xffffff) /* bit0 ~ bit23 */ +#define BDMA_DESC_BUFLEN GENMASK(15, 0) +#define BDMA_DESC_BUFLEN_EXT GENMASK(23, 0) }; struct msdc_dma { @@ -636,12 +637,11 @@ static void msdc_reset_hw(struct msdc_host *host) u32 val; sdr_set_bits(host->base + MSDC_CFG, MSDC_CFG_RST); - while (readl(host->base + MSDC_CFG) & MSDC_CFG_RST) - cpu_relax(); + readl_poll_timeout(host->base + MSDC_CFG, val, !(val & MSDC_CFG_RST), 0, 0); sdr_set_bits(host->base + MSDC_FIFOCS, MSDC_FIFOCS_CLR); - while (readl(host->base + MSDC_FIFOCS) & MSDC_FIFOCS_CLR) - cpu_relax(); + readl_poll_timeout(host->base + MSDC_FIFOCS, val, + !(val & MSDC_FIFOCS_CLR), 0, 0); val = readl(host->base + MSDC_INT); writel(val, host->base + MSDC_INT); @@ -725,7 +725,7 @@ static inline void msdc_dma_setup(struct msdc_host *host, struct msdc_dma *dma, sdr_set_field(host->base + MSDC_DMA_CFG, MSDC_DMA_CFG_DECSEN, 1); dma_ctrl = readl_relaxed(host->base + MSDC_DMA_CTRL); dma_ctrl &= ~(MSDC_DMA_CTRL_BRUSTSZ | MSDC_DMA_CTRL_MODE); - dma_ctrl |= (MSDC_BURST_64B << 12 | 1 << 8); + dma_ctrl |= (MSDC_BURST_64B << 12 | BIT(8)); writel_relaxed(dma_ctrl, host->base + MSDC_DMA_CTRL); if (host->dev_comp->support_64g) sdr_set_field(host->base + DMA_SA_H4BIT, DMA_ADDR_HIGH_4BIT, @@ -769,7 +769,7 @@ static u64 msdc_timeout_cal(struct msdc_host *host, u64 ns, u64 clks) do_div(timeout, clk_ns); timeout += clks; /* in 1048576 sclk cycle unit */ - timeout = DIV_ROUND_UP(timeout, (0x1 << 20)); + timeout = DIV_ROUND_UP(timeout, BIT(20)); if (host->dev_comp->clk_div_bits == 8) sdr_get_field(host->base + MSDC_CFG, MSDC_CFG_CKMOD, &mode); @@ -814,8 +814,9 @@ static void msdc_gate_clock(struct msdc_host *host) clk_disable_unprepare(host->h_clk); } -static void msdc_ungate_clock(struct msdc_host *host) +static int msdc_ungate_clock(struct msdc_host *host) { + u32 val; int ret; clk_prepare_enable(host->h_clk); @@ -825,11 +826,11 @@ static void msdc_ungate_clock(struct msdc_host *host) ret = clk_bulk_prepare_enable(MSDC_NR_CLOCKS, host->bulk_clks); if (ret) { dev_err(host->dev, "Cannot enable pclk/axi/ahb clock gates\n"); - return; + return ret; } - while (!(readl(host->base + MSDC_CFG) & MSDC_CFG_CKSTB)) - cpu_relax(); + return readl_poll_timeout(host->base + MSDC_CFG, val, + (val & MSDC_CFG_CKSTB), 1, 20000); } static void msdc_set_mclk(struct msdc_host *host, unsigned char timing, u32 hz) @@ -840,6 +841,7 @@ static void msdc_set_mclk(struct msdc_host *host, unsigned char timing, u32 hz) u32 div; u32 sclk; u32 tune_reg = host->dev_comp->pad_tune_reg; + u32 val; if (!hz) { dev_dbg(host->dev, "set mclk to 0\n"); @@ -899,14 +901,8 @@ static void msdc_set_mclk(struct msdc_host *host, unsigned char timing, u32 hz) } } sdr_clr_bits(host->base + MSDC_CFG, MSDC_CFG_CKPDN); - /* - * As src_clk/HCLK use the same bit to gate/ungate, - * So if want to only gate src_clk, need gate its parent(mux). - */ - if (host->src_clk_cg) - clk_disable_unprepare(host->src_clk_cg); - else - clk_disable_unprepare(clk_get_parent(host->src_clk)); + + clk_disable_unprepare(host->src_clk_cg); if (host->dev_comp->clk_div_bits == 8) sdr_set_field(host->base + MSDC_CFG, MSDC_CFG_CKMOD | MSDC_CFG_CKDIV, @@ -915,13 +911,9 @@ static void msdc_set_mclk(struct msdc_host *host, unsigned char timing, u32 hz) sdr_set_field(host->base + MSDC_CFG, MSDC_CFG_CKMOD_EXTRA | MSDC_CFG_CKDIV_EXTRA, (mode << 12) | div); - if (host->src_clk_cg) - clk_prepare_enable(host->src_clk_cg); - else - clk_prepare_enable(clk_get_parent(host->src_clk)); - while (!(readl(host->base + MSDC_CFG) & MSDC_CFG_CKSTB)) - cpu_relax(); + clk_prepare_enable(host->src_clk_cg); + readl_poll_timeout(host->base + MSDC_CFG, val, (val & MSDC_CFG_CKSTB), 0, 0); sdr_set_bits(host->base + MSDC_CFG, MSDC_CFG_CKPDN); mmc->actual_clock = sclk; host->mclk = hz; @@ -1013,15 +1005,15 @@ static inline u32 msdc_cmd_prepare_raw_cmd(struct msdc_host *host, if ((opcode == SD_IO_RW_DIRECT && cmd->flags == (unsigned int) -1) || opcode == MMC_STOP_TRANSMISSION) - rawcmd |= (0x1 << 14); + rawcmd |= BIT(14); else if (opcode == SD_SWITCH_VOLTAGE) - rawcmd |= (0x1 << 30); + rawcmd |= BIT(30); else if (opcode == SD_APP_SEND_SCR || opcode == SD_APP_SEND_NUM_WR_BLKS || (opcode == SD_SWITCH && mmc_cmd_type(cmd) == MMC_CMD_ADTC) || (opcode == SD_APP_SD_STATUS && mmc_cmd_type(cmd) == MMC_CMD_ADTC) || (opcode == MMC_SEND_EXT_CSD && mmc_cmd_type(cmd) == MMC_CMD_ADTC)) - rawcmd |= (0x1 << 11); + rawcmd |= BIT(11); if (cmd->data) { struct mmc_data *data = cmd->data; @@ -1029,16 +1021,16 @@ static inline u32 msdc_cmd_prepare_raw_cmd(struct msdc_host *host, if (mmc_op_multi(opcode)) { if (mmc_card_mmc(mmc->card) && mrq->sbc && !(mrq->sbc->arg & 0xFFFF0000)) - rawcmd |= 0x2 << 28; /* AutoCMD23 */ + rawcmd |= BIT(29); /* AutoCMD23 */ } rawcmd |= ((data->blksz & 0xFFF) << 16); if (data->flags & MMC_DATA_WRITE) - rawcmd |= (0x1 << 13); + rawcmd |= BIT(13); if (data->blocks > 1) - rawcmd |= (0x2 << 11); + rawcmd |= BIT(12); else - rawcmd |= (0x1 << 11); + rawcmd |= BIT(11); /* Always use dma mode */ sdr_clr_bits(host->base + MSDC_CFG, MSDC_CFG_PIO); @@ -1231,13 +1223,13 @@ static bool msdc_cmd_done(struct msdc_host *host, int events, static inline bool msdc_cmd_is_ready(struct msdc_host *host, struct mmc_request *mrq, struct mmc_command *cmd) { - /* The max busy time we can endure is 20ms */ - unsigned long tmo = jiffies + msecs_to_jiffies(20); + u32 val; + int ret; - while ((readl(host->base + SDC_STS) & SDC_STS_CMDBUSY) && - time_before(jiffies, tmo)) - cpu_relax(); - if (readl(host->base + SDC_STS) & SDC_STS_CMDBUSY) { + /* The max busy time we can endure is 20ms */ + ret = readl_poll_timeout_atomic(host->base + SDC_STS, val, + !(val & SDC_STS_CMDBUSY), 1, 20000); + if (ret) { dev_err(host->dev, "CMD bus busy detected\n"); host->error |= REQ_CMD_BUSY; msdc_cmd_done(host, MSDC_INT_CMDTMO, mrq, cmd); @@ -1245,12 +1237,10 @@ static inline bool msdc_cmd_is_ready(struct msdc_host *host, } if (mmc_resp_type(cmd) == MMC_RSP_R1B || cmd->data) { - tmo = jiffies + msecs_to_jiffies(20); /* R1B or with data, should check SDCBUSY */ - while ((readl(host->base + SDC_STS) & SDC_STS_SDCBUSY) && - time_before(jiffies, tmo)) - cpu_relax(); - if (readl(host->base + SDC_STS) & SDC_STS_SDCBUSY) { + ret = readl_poll_timeout_atomic(host->base + SDC_STS, val, + !(val & SDC_STS_SDCBUSY), 1, 20000); + if (ret) { dev_err(host->dev, "Controller busy detected\n"); host->error |= REQ_CMD_BUSY; msdc_cmd_done(host, MSDC_INT_CMDTMO, mrq, cmd); @@ -1376,6 +1366,8 @@ static bool msdc_data_xfer_done(struct msdc_host *host, u32 events, (MSDC_INT_XFER_COMPL | MSDC_INT_DATCRCERR | MSDC_INT_DATTMO | MSDC_INT_DMA_BDCSERR | MSDC_INT_DMA_GPDCSERR | MSDC_INT_DMA_PROTECT); + u32 val; + int ret; spin_lock_irqsave(&host->lock, flags); done = !host->data; @@ -1392,8 +1384,14 @@ static bool msdc_data_xfer_done(struct msdc_host *host, u32 events, readl(host->base + MSDC_DMA_CFG)); sdr_set_field(host->base + MSDC_DMA_CTRL, MSDC_DMA_CTRL_STOP, 1); - while (readl(host->base + MSDC_DMA_CFG) & MSDC_DMA_CFG_STS) - cpu_relax(); + + ret = readl_poll_timeout_atomic(host->base + MSDC_DMA_CFG, val, + !(val & MSDC_DMA_CFG_STS), 1, 20000); + if (ret) { + dev_dbg(host->dev, "DMA stop timed out\n"); + return false; + } + sdr_clr_bits(host->base + MSDC_INTEN, data_ints_mask); dev_dbg(host->dev, "DMA stop\n"); @@ -1631,6 +1629,7 @@ static void msdc_init_hw(struct msdc_host *host) { u32 val; u32 tune_reg = host->dev_comp->pad_tune_reg; + struct mmc_host *mmc = mmc_from_priv(host); if (host->reset) { reset_control_assert(host->reset); @@ -1685,7 +1684,7 @@ static void msdc_init_hw(struct msdc_host *host) } if (host->dev_comp->busy_check) - sdr_clr_bits(host->base + MSDC_PATCH_BIT1, (1 << 7)); + sdr_clr_bits(host->base + MSDC_PATCH_BIT1, BIT(7)); if (host->dev_comp->async_fifo) { sdr_set_field(host->base + MSDC_PATCH_BIT2, @@ -1736,14 +1735,18 @@ static void msdc_init_hw(struct msdc_host *host) MSDC_PAD_TUNE_RXDLYSEL); } - /* Configure to enable SDIO mode. - * it's must otherwise sdio cmd5 failed - */ - sdr_set_bits(host->base + SDC_CFG, SDC_CFG_SDIO); + if (mmc->caps2 & MMC_CAP2_NO_SDIO) { + sdr_clr_bits(host->base + SDC_CFG, SDC_CFG_SDIO); + sdr_clr_bits(host->base + MSDC_INTEN, MSDC_INTEN_SDIOIRQ); + sdr_clr_bits(host->base + SDC_ADV_CFG0, SDC_DAT1_IRQ_TRIGGER); + } else { + /* Configure to enable SDIO mode, otherwise SDIO CMD5 fails */ + sdr_set_bits(host->base + SDC_CFG, SDC_CFG_SDIO); - /* Config SDIO device detect interrupt function */ - sdr_clr_bits(host->base + SDC_CFG, SDC_CFG_SDIOIDE); - sdr_set_bits(host->base + SDC_ADV_CFG0, SDC_DAT1_IRQ_TRIGGER); + /* Config SDIO device detect interrupt function */ + sdr_clr_bits(host->base + SDC_CFG, SDC_CFG_SDIOIDE); + sdr_set_bits(host->base + SDC_ADV_CFG0, SDC_DAT1_IRQ_TRIGGER); + } /* Configure to default data timeout */ sdr_set_field(host->base + SDC_CFG, SDC_CFG_DTOC, 3); @@ -1865,7 +1868,7 @@ static void msdc_ops_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) static u32 test_delay_bit(u32 delay, u32 bit) { bit %= PAD_DELAY_MAX; - return delay & (1 << bit); + return delay & BIT(bit); } static int get_delay_len(u32 delay, u32 start_bit) @@ -1970,9 +1973,9 @@ static int msdc_tune_response(struct mmc_host *mmc, u32 opcode) for (j = 0; j < 3; j++) { mmc_send_tuning(mmc, opcode, &cmd_err); if (!cmd_err) { - rise_delay |= (1 << i); + rise_delay |= BIT(i); } else { - rise_delay &= ~(1 << i); + rise_delay &= ~BIT(i); break; } } @@ -1994,9 +1997,9 @@ static int msdc_tune_response(struct mmc_host *mmc, u32 opcode) for (j = 0; j < 3; j++) { mmc_send_tuning(mmc, opcode, &cmd_err); if (!cmd_err) { - fall_delay |= (1 << i); + fall_delay |= BIT(i); } else { - fall_delay &= ~(1 << i); + fall_delay &= ~BIT(i); break; } } @@ -2024,7 +2027,7 @@ skip_fall: MSDC_PAD_TUNE_CMDRRDLY, i); mmc_send_tuning(mmc, opcode, &cmd_err); if (!cmd_err) - internal_delay |= (1 << i); + internal_delay |= BIT(i); } dev_dbg(host->dev, "Final internal delay: 0x%x\n", internal_delay); internal_delay_phase = get_best_delay(host, internal_delay); @@ -2069,9 +2072,9 @@ static int hs400_tune_response(struct mmc_host *mmc, u32 opcode) for (j = 0; j < 3; j++) { mmc_send_tuning(mmc, opcode, &cmd_err); if (!cmd_err) { - cmd_delay |= (1 << i); + cmd_delay |= BIT(i); } else { - cmd_delay &= ~(1 << i); + cmd_delay &= ~BIT(i); break; } } @@ -2101,7 +2104,7 @@ static int msdc_tune_data(struct mmc_host *mmc, u32 opcode) msdc_set_data_delay(host, i); ret = mmc_send_tuning(mmc, opcode, NULL); if (!ret) - rise_delay |= (1 << i); + rise_delay |= BIT(i); } final_rise_delay = get_best_delay(host, rise_delay); /* if rising edge has enough margin, then do not scan falling edge */ @@ -2115,7 +2118,7 @@ static int msdc_tune_data(struct mmc_host *mmc, u32 opcode) msdc_set_data_delay(host, i); ret = mmc_send_tuning(mmc, opcode, NULL); if (!ret) - fall_delay |= (1 << i); + fall_delay |= BIT(i); } final_fall_delay = get_best_delay(host, fall_delay); @@ -2159,7 +2162,7 @@ static int msdc_tune_together(struct mmc_host *mmc, u32 opcode) msdc_set_data_delay(host, i); ret = mmc_send_tuning(mmc, opcode, NULL); if (!ret) - rise_delay |= (1 << i); + rise_delay |= BIT(i); } final_rise_delay = get_best_delay(host, rise_delay); /* if rising edge has enough margin, then do not scan falling edge */ @@ -2175,7 +2178,7 @@ static int msdc_tune_together(struct mmc_host *mmc, u32 opcode) msdc_set_data_delay(host, i); ret = mmc_send_tuning(mmc, opcode, NULL); if (!ret) - fall_delay |= (1 << i); + fall_delay |= BIT(i); } final_fall_delay = get_best_delay(host, fall_delay); @@ -2291,8 +2294,10 @@ static int msdc_execute_hs400_tuning(struct mmc_host *mmc, struct mmc_card *card sdr_set_field(host->base + PAD_DS_TUNE, PAD_DS_TUNE_DLY1, i); ret = mmc_get_ext_csd(card, &ext_csd); - if (!ret) - result_dly1 |= (1 << i); + if (!ret) { + result_dly1 |= BIT(i); + kfree(ext_csd); + } } host->hs400_tuning = false; @@ -2514,7 +2519,20 @@ static int msdc_of_clock_parse(struct platform_device *pdev, /*source clock control gate is optional clock*/ host->src_clk_cg = devm_clk_get_optional(&pdev->dev, "source_cg"); if (IS_ERR(host->src_clk_cg)) - host->src_clk_cg = NULL; + return PTR_ERR(host->src_clk_cg); + + /* + * Fallback for legacy device-trees: src_clk and HCLK use the same + * bit to control gating but they are parented to a different mux, + * hence if our intention is to gate only the source, required + * during a clk mode switch to avoid hw hangs, we need to gate + * its parent (specified as a different clock only on new DTs). + */ + if (!host->src_clk_cg) { + host->src_clk_cg = clk_get_parent(host->src_clk); + if (IS_ERR(host->src_clk_cg)) + return PTR_ERR(host->src_clk_cg); + } host->sys_clk_cg = devm_clk_get_optional(&pdev->dev, "sys_cg"); if (IS_ERR(host->sys_clk_cg)) @@ -2672,7 +2690,11 @@ static int msdc_drv_probe(struct platform_device *pdev) spin_lock_init(&host->lock); platform_set_drvdata(pdev, mmc); - msdc_ungate_clock(host); + ret = msdc_ungate_clock(host); + if (ret) { + dev_err(&pdev->dev, "Cannot ungate clocks!\n"); + goto release_mem; + } msdc_init_hw(host); if (mmc->caps2 & MMC_CAP2_CQE) { @@ -2831,8 +2853,12 @@ static int __maybe_unused msdc_runtime_resume(struct device *dev) { struct mmc_host *mmc = dev_get_drvdata(dev); struct msdc_host *host = mmc_priv(mmc); + int ret; + + ret = msdc_ungate_clock(host); + if (ret) + return ret; - msdc_ungate_clock(host); msdc_restore_reg(host); return 0; } |