v4.19.13 snapshot.
diff --git a/drivers/mmc/host/tmio_mmc.h b/drivers/mmc/host/tmio_mmc.h
new file mode 100644
index 0000000..5d141f7
--- /dev/null
+++ b/drivers/mmc/host/tmio_mmc.h
@@ -0,0 +1,288 @@
+/*
+ * Driver for the MMC / SD / SDIO cell found in:
+ *
+ * TC6393XB TC6391XB TC6387XB T7L66XB ASIC3
+ *
+ * Copyright (C) 2015-17 Renesas Electronics Corporation
+ * Copyright (C) 2016-17 Sang Engineering, Wolfram Sang
+ * Copyright (C) 2016-17 Horms Solutions, Simon Horman
+ * Copyright (C) 2007 Ian Molton
+ * Copyright (C) 2004 Ian Molton
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ */
+
+#ifndef TMIO_MMC_H
+#define TMIO_MMC_H
+
+#include <linux/dmaengine.h>
+#include <linux/highmem.h>
+#include <linux/mutex.h>
+#include <linux/pagemap.h>
+#include <linux/scatterlist.h>
+#include <linux/spinlock.h>
+#include <linux/interrupt.h>
+
+#define CTL_SD_CMD 0x00
+#define CTL_ARG_REG 0x04
+#define CTL_STOP_INTERNAL_ACTION 0x08
+#define CTL_XFER_BLK_COUNT 0xa
+#define CTL_RESPONSE 0x0c
+/* driver merges STATUS and following STATUS2 */
+#define CTL_STATUS 0x1c
+/* driver merges IRQ_MASK and following IRQ_MASK2 */
+#define CTL_IRQ_MASK 0x20
+#define CTL_SD_CARD_CLK_CTL 0x24
+#define CTL_SD_XFER_LEN 0x26
+#define CTL_SD_MEM_CARD_OPT 0x28
+#define CTL_SD_ERROR_DETAIL_STATUS 0x2c
+#define CTL_SD_DATA_PORT 0x30
+#define CTL_TRANSACTION_CTL 0x34
+#define CTL_SDIO_STATUS 0x36
+#define CTL_SDIO_IRQ_MASK 0x38
+#define CTL_DMA_ENABLE 0xd8
+#define CTL_RESET_SD 0xe0
+#define CTL_VERSION 0xe2
+#define CTL_SDIF_MODE 0xe6
+#define CTL_SDIO_REGS 0x100
+#define CTL_CLK_AND_WAIT_CTL 0x138
+#define CTL_RESET_SDIO 0x1e0
+
+/* Definitions for values the CTL_STOP_INTERNAL_ACTION register can take */
+#define TMIO_STOP_STP BIT(0)
+#define TMIO_STOP_SEC BIT(8)
+
+/* Definitions for values the CTL_STATUS register can take */
+#define TMIO_STAT_CMDRESPEND BIT(0)
+#define TMIO_STAT_DATAEND BIT(2)
+#define TMIO_STAT_CARD_REMOVE BIT(3)
+#define TMIO_STAT_CARD_INSERT BIT(4)
+#define TMIO_STAT_SIGSTATE BIT(5)
+#define TMIO_STAT_WRPROTECT BIT(7)
+#define TMIO_STAT_CARD_REMOVE_A BIT(8)
+#define TMIO_STAT_CARD_INSERT_A BIT(9)
+#define TMIO_STAT_SIGSTATE_A BIT(10)
+
+/* These belong technically to CTL_STATUS2, but the driver merges them */
+#define TMIO_STAT_CMD_IDX_ERR BIT(16)
+#define TMIO_STAT_CRCFAIL BIT(17)
+#define TMIO_STAT_STOPBIT_ERR BIT(18)
+#define TMIO_STAT_DATATIMEOUT BIT(19)
+#define TMIO_STAT_RXOVERFLOW BIT(20)
+#define TMIO_STAT_TXUNDERRUN BIT(21)
+#define TMIO_STAT_CMDTIMEOUT BIT(22)
+#define TMIO_STAT_DAT0 BIT(23) /* only known on R-Car so far */
+#define TMIO_STAT_RXRDY BIT(24)
+#define TMIO_STAT_TXRQ BIT(25)
+#define TMIO_STAT_ILL_FUNC BIT(29) /* only when !TMIO_MMC_HAS_IDLE_WAIT */
+#define TMIO_STAT_SCLKDIVEN BIT(29) /* only when TMIO_MMC_HAS_IDLE_WAIT */
+#define TMIO_STAT_CMD_BUSY BIT(30)
+#define TMIO_STAT_ILL_ACCESS BIT(31)
+
+/* Definitions for values the CTL_SD_CARD_CLK_CTL register can take */
+#define CLK_CTL_DIV_MASK 0xff
+#define CLK_CTL_SCLKEN BIT(8)
+
+/* Definitions for values the CTL_SD_MEM_CARD_OPT register can take */
+#define CARD_OPT_WIDTH8 BIT(13)
+#define CARD_OPT_WIDTH BIT(15)
+
+/* Definitions for values the CTL_SDIO_STATUS register can take */
+#define TMIO_SDIO_STAT_IOIRQ 0x0001
+#define TMIO_SDIO_STAT_EXPUB52 0x4000
+#define TMIO_SDIO_STAT_EXWT 0x8000
+#define TMIO_SDIO_MASK_ALL 0xc007
+
+#define TMIO_SDIO_SETBITS_MASK 0x0006
+
+/* Definitions for values the CTL_DMA_ENABLE register can take */
+#define DMA_ENABLE_DMASDRW BIT(1)
+
+/* Define some IRQ masks */
+/* This is the mask used at reset by the chip */
+#define TMIO_MASK_ALL 0x837f031d
+#define TMIO_MASK_READOP (TMIO_STAT_RXRDY | TMIO_STAT_DATAEND)
+#define TMIO_MASK_WRITEOP (TMIO_STAT_TXRQ | TMIO_STAT_DATAEND)
+#define TMIO_MASK_CMD (TMIO_STAT_CMDRESPEND | TMIO_STAT_CMDTIMEOUT | \
+ TMIO_STAT_CARD_REMOVE | TMIO_STAT_CARD_INSERT)
+#define TMIO_MASK_IRQ (TMIO_MASK_READOP | TMIO_MASK_WRITEOP | TMIO_MASK_CMD)
+
+struct tmio_mmc_data;
+struct tmio_mmc_host;
+
+struct tmio_mmc_dma_ops {
+ void (*start)(struct tmio_mmc_host *host, struct mmc_data *data);
+ void (*enable)(struct tmio_mmc_host *host, bool enable);
+ void (*request)(struct tmio_mmc_host *host,
+ struct tmio_mmc_data *pdata);
+ void (*release)(struct tmio_mmc_host *host);
+ void (*abort)(struct tmio_mmc_host *host);
+ void (*dataend)(struct tmio_mmc_host *host);
+};
+
+struct tmio_mmc_host {
+ void __iomem *ctl;
+ struct mmc_command *cmd;
+ struct mmc_request *mrq;
+ struct mmc_data *data;
+ struct mmc_host *mmc;
+ struct mmc_host_ops ops;
+
+ /* Callbacks for clock / power control */
+ void (*set_pwr)(struct platform_device *host, int state);
+ void (*set_clk_div)(struct platform_device *host, int state);
+
+ /* pio related stuff */
+ struct scatterlist *sg_ptr;
+ struct scatterlist *sg_orig;
+ unsigned int sg_len;
+ unsigned int sg_off;
+ unsigned int bus_shift;
+
+ struct platform_device *pdev;
+ struct tmio_mmc_data *pdata;
+
+ /* DMA support */
+ bool force_pio;
+ struct dma_chan *chan_rx;
+ struct dma_chan *chan_tx;
+ struct tasklet_struct dma_issue;
+ struct scatterlist bounce_sg;
+ u8 *bounce_buf;
+
+ /* Track lost interrupts */
+ struct delayed_work delayed_reset_work;
+ struct work_struct done;
+
+ /* Cache */
+ u32 sdcard_irq_mask;
+ u32 sdio_irq_mask;
+ unsigned int clk_cache;
+
+ spinlock_t lock; /* protect host private data */
+ unsigned long last_req_ts;
+ struct mutex ios_lock; /* protect set_ios() context */
+ bool native_hotplug;
+ bool sdio_irq_enabled;
+
+ /* Mandatory callback */
+ int (*clk_enable)(struct tmio_mmc_host *host);
+
+ /* Optional callbacks */
+ unsigned int (*clk_update)(struct tmio_mmc_host *host,
+ unsigned int new_clock);
+ void (*clk_disable)(struct tmio_mmc_host *host);
+ int (*multi_io_quirk)(struct mmc_card *card,
+ unsigned int direction, int blk_size);
+ int (*write16_hook)(struct tmio_mmc_host *host, int addr);
+ void (*hw_reset)(struct tmio_mmc_host *host);
+ void (*prepare_tuning)(struct tmio_mmc_host *host, unsigned long tap);
+ bool (*check_scc_error)(struct tmio_mmc_host *host);
+
+ /*
+ * Mandatory callback for tuning to occur which is optional for SDR50
+ * and mandatory for SDR104.
+ */
+ unsigned int (*init_tuning)(struct tmio_mmc_host *host);
+ int (*select_tuning)(struct tmio_mmc_host *host);
+
+ /* Tuning values: 1 for success, 0 for failure */
+ DECLARE_BITMAP(taps, BITS_PER_BYTE * sizeof(long));
+ unsigned int tap_num;
+ unsigned long tap_set;
+
+ void (*prepare_hs400_tuning)(struct tmio_mmc_host *host);
+ void (*hs400_downgrade)(struct tmio_mmc_host *host);
+ void (*hs400_complete)(struct tmio_mmc_host *host);
+
+ const struct tmio_mmc_dma_ops *dma_ops;
+};
+
+struct tmio_mmc_host *tmio_mmc_host_alloc(struct platform_device *pdev,
+ struct tmio_mmc_data *pdata);
+void tmio_mmc_host_free(struct tmio_mmc_host *host);
+int tmio_mmc_host_probe(struct tmio_mmc_host *host);
+void tmio_mmc_host_remove(struct tmio_mmc_host *host);
+void tmio_mmc_do_data_irq(struct tmio_mmc_host *host);
+
+void tmio_mmc_enable_mmc_irqs(struct tmio_mmc_host *host, u32 i);
+void tmio_mmc_disable_mmc_irqs(struct tmio_mmc_host *host, u32 i);
+irqreturn_t tmio_mmc_irq(int irq, void *devid);
+
+static inline char *tmio_mmc_kmap_atomic(struct scatterlist *sg,
+ unsigned long *flags)
+{
+ local_irq_save(*flags);
+ return kmap_atomic(sg_page(sg)) + sg->offset;
+}
+
+static inline void tmio_mmc_kunmap_atomic(struct scatterlist *sg,
+ unsigned long *flags, void *virt)
+{
+ kunmap_atomic(virt - sg->offset);
+ local_irq_restore(*flags);
+}
+
+#ifdef CONFIG_PM
+int tmio_mmc_host_runtime_suspend(struct device *dev);
+int tmio_mmc_host_runtime_resume(struct device *dev);
+#endif
+
+static inline u16 sd_ctrl_read16(struct tmio_mmc_host *host, int addr)
+{
+ return ioread16(host->ctl + (addr << host->bus_shift));
+}
+
+static inline void sd_ctrl_read16_rep(struct tmio_mmc_host *host, int addr,
+ u16 *buf, int count)
+{
+ ioread16_rep(host->ctl + (addr << host->bus_shift), buf, count);
+}
+
+static inline u32 sd_ctrl_read16_and_16_as_32(struct tmio_mmc_host *host,
+ int addr)
+{
+ return ioread16(host->ctl + (addr << host->bus_shift)) |
+ ioread16(host->ctl + ((addr + 2) << host->bus_shift)) << 16;
+}
+
+static inline void sd_ctrl_read32_rep(struct tmio_mmc_host *host, int addr,
+ u32 *buf, int count)
+{
+ ioread32_rep(host->ctl + (addr << host->bus_shift), buf, count);
+}
+
+static inline void sd_ctrl_write16(struct tmio_mmc_host *host, int addr,
+ u16 val)
+{
+ /* If there is a hook and it returns non-zero then there
+ * is an error and the write should be skipped
+ */
+ if (host->write16_hook && host->write16_hook(host, addr))
+ return;
+ iowrite16(val, host->ctl + (addr << host->bus_shift));
+}
+
+static inline void sd_ctrl_write16_rep(struct tmio_mmc_host *host, int addr,
+ u16 *buf, int count)
+{
+ iowrite16_rep(host->ctl + (addr << host->bus_shift), buf, count);
+}
+
+static inline void sd_ctrl_write32_as_16_and_16(struct tmio_mmc_host *host,
+ int addr, u32 val)
+{
+ iowrite16(val & 0xffff, host->ctl + (addr << host->bus_shift));
+ iowrite16(val >> 16, host->ctl + ((addr + 2) << host->bus_shift));
+}
+
+static inline void sd_ctrl_write32_rep(struct tmio_mmc_host *host, int addr,
+ const u32 *buf, int count)
+{
+ iowrite32_rep(host->ctl + (addr << host->bus_shift), buf, count);
+}
+
+#endif