spi: reorganize drivers

Sort the SPI makefile and enforce the naming convention spi_*.c for
spi drivers.

This change also rolls the contents of atmel_spi.h into the .c file
since there is only one user of that particular include file.

v2: - Use 'spi-' prefix instead of 'spi_' to match what seems to be
      be the predominant pattern for subsystem prefixes.
    - Clean up filenames in Kconfig and header comment blocks

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Wolfram Sang <w.sang@pengutronix.de>
Acked-by: Linus Walleij <linus.walleij@linaro.org>

1 files changed, 0 insertions, 232 deletions

diff --git a/drivers/spi/dw_spi.h b/drivers/spi/dw_spi.h
deleted file mode 100644
index 7a5e78d2a5c..00000000000
--- a/drivers/spi/dw_spi.h
+++ /dev/null
@@ -1,232 +0,0 @@
-#ifndef DW_SPI_HEADER_H
-#define DW_SPI_HEADER_H
-
-#include <linux/io.h>
-#include <linux/scatterlist.h>
-
-/* Bit fields in CTRLR0 */
-#define SPI_DFS_OFFSET			0
-
-#define SPI_FRF_OFFSET			4
-#define SPI_FRF_SPI			0x0
-#define SPI_FRF_SSP			0x1
-#define SPI_FRF_MICROWIRE		0x2
-#define SPI_FRF_RESV			0x3
-
-#define SPI_MODE_OFFSET			6
-#define SPI_SCPH_OFFSET			6
-#define SPI_SCOL_OFFSET			7
-
-#define SPI_TMOD_OFFSET			8
-#define SPI_TMOD_MASK			(0x3 << SPI_TMOD_OFFSET)
-#define	SPI_TMOD_TR			0x0		/* xmit & recv */
-#define SPI_TMOD_TO			0x1		/* xmit only */
-#define SPI_TMOD_RO			0x2		/* recv only */
-#define SPI_TMOD_EPROMREAD		0x3		/* eeprom read mode */
-
-#define SPI_SLVOE_OFFSET		10
-#define SPI_SRL_OFFSET			11
-#define SPI_CFS_OFFSET			12
-
-/* Bit fields in SR, 7 bits */
-#define SR_MASK				0x7f		/* cover 7 bits */
-#define SR_BUSY				(1 << 0)
-#define SR_TF_NOT_FULL			(1 << 1)
-#define SR_TF_EMPT			(1 << 2)
-#define SR_RF_NOT_EMPT			(1 << 3)
-#define SR_RF_FULL			(1 << 4)
-#define SR_TX_ERR			(1 << 5)
-#define SR_DCOL				(1 << 6)
-
-/* Bit fields in ISR, IMR, RISR, 7 bits */
-#define SPI_INT_TXEI			(1 << 0)
-#define SPI_INT_TXOI			(1 << 1)
-#define SPI_INT_RXUI			(1 << 2)
-#define SPI_INT_RXOI			(1 << 3)
-#define SPI_INT_RXFI			(1 << 4)
-#define SPI_INT_MSTI			(1 << 5)
-
-/* TX RX interrupt level threshold, max can be 256 */
-#define SPI_INT_THRESHOLD		32
-
-enum dw_ssi_type {
-	SSI_MOTO_SPI = 0,
-	SSI_TI_SSP,
-	SSI_NS_MICROWIRE,
-};
-
-struct dw_spi_reg {
-	u32	ctrl0;
-	u32	ctrl1;
-	u32	ssienr;
-	u32	mwcr;
-	u32	ser;
-	u32	baudr;
-	u32	txfltr;
-	u32	rxfltr;
-	u32	txflr;
-	u32	rxflr;
-	u32	sr;
-	u32	imr;
-	u32	isr;
-	u32	risr;
-	u32	txoicr;
-	u32	rxoicr;
-	u32	rxuicr;
-	u32	msticr;
-	u32	icr;
-	u32	dmacr;
-	u32	dmatdlr;
-	u32	dmardlr;
-	u32	idr;
-	u32	version;
-	u32	dr;		/* Currently oper as 32 bits,
-				though only low 16 bits matters */
-} __packed;
-
-struct dw_spi;
-struct dw_spi_dma_ops {
-	int (*dma_init)(struct dw_spi *dws);
-	void (*dma_exit)(struct dw_spi *dws);
-	int (*dma_transfer)(struct dw_spi *dws, int cs_change);
-};
-
-struct dw_spi {
-	struct spi_master	*master;
-	struct spi_device	*cur_dev;
-	struct device		*parent_dev;
-	enum dw_ssi_type	type;
-
-	void __iomem		*regs;
-	unsigned long		paddr;
-	u32			iolen;
-	int			irq;
-	u32			fifo_len;	/* depth of the FIFO buffer */
-	u32			max_freq;	/* max bus freq supported */
-
-	u16			bus_num;
-	u16			num_cs;		/* supported slave numbers */
-
-	/* Driver message queue */
-	struct workqueue_struct	*workqueue;
-	struct work_struct	pump_messages;
-	spinlock_t		lock;
-	struct list_head	queue;
-	int			busy;
-	int			run;
-
-	/* Message Transfer pump */
-	struct tasklet_struct	pump_transfers;
-
-	/* Current message transfer state info */
-	struct spi_message	*cur_msg;
-	struct spi_transfer	*cur_transfer;
-	struct chip_data	*cur_chip;
-	struct chip_data	*prev_chip;
-	size_t			len;
-	void			*tx;
-	void			*tx_end;
-	void			*rx;
-	void			*rx_end;
-	int			dma_mapped;
-	dma_addr_t		rx_dma;
-	dma_addr_t		tx_dma;
-	size_t			rx_map_len;
-	size_t			tx_map_len;
-	u8			n_bytes;	/* current is a 1/2 bytes op */
-	u8			max_bits_per_word;	/* maxim is 16b */
-	u32			dma_width;
-	int			cs_change;
-	irqreturn_t		(*transfer_handler)(struct dw_spi *dws);
-	void			(*cs_control)(u32 command);
-
-	/* Dma info */
-	int			dma_inited;
-	struct dma_chan		*txchan;
-	struct scatterlist	tx_sgl;
-	struct dma_chan		*rxchan;
-	struct scatterlist	rx_sgl;
-	int			dma_chan_done;
-	struct device		*dma_dev;
-	dma_addr_t		dma_addr; /* phy address of the Data register */
-	struct dw_spi_dma_ops	*dma_ops;
-	void			*dma_priv; /* platform relate info */
-	struct pci_dev		*dmac;
-
-	/* Bus interface info */
-	void			*priv;
-#ifdef CONFIG_DEBUG_FS
-	struct dentry *debugfs;
-#endif
-};
-
-#define dw_readl(dw, name) \
-	__raw_readl(&(((struct dw_spi_reg *)dw->regs)->name))
-#define dw_writel(dw, name, val) \
-	__raw_writel((val), &(((struct dw_spi_reg *)dw->regs)->name))
-#define dw_readw(dw, name) \
-	__raw_readw(&(((struct dw_spi_reg *)dw->regs)->name))
-#define dw_writew(dw, name, val) \
-	__raw_writew((val), &(((struct dw_spi_reg *)dw->regs)->name))
-
-static inline void spi_enable_chip(struct dw_spi *dws, int enable)
-{
-	dw_writel(dws, ssienr, (enable ? 1 : 0));
-}
-
-static inline void spi_set_clk(struct dw_spi *dws, u16 div)
-{
-	dw_writel(dws, baudr, div);
-}
-
-static inline void spi_chip_sel(struct dw_spi *dws, u16 cs)
-{
-	if (cs > dws->num_cs)
-		return;
-
-	if (dws->cs_control)
-		dws->cs_control(1);
-
-	dw_writel(dws, ser, 1 << cs);
-}
-
-/* Disable IRQ bits */
-static inline void spi_mask_intr(struct dw_spi *dws, u32 mask)
-{
-	u32 new_mask;
-
-	new_mask = dw_readl(dws, imr) & ~mask;
-	dw_writel(dws, imr, new_mask);
-}
-
-/* Enable IRQ bits */
-static inline void spi_umask_intr(struct dw_spi *dws, u32 mask)
-{
-	u32 new_mask;
-
-	new_mask = dw_readl(dws, imr) | mask;
-	dw_writel(dws, imr, new_mask);
-}
-
-/*
- * Each SPI slave device to work with dw_api controller should
- * has such a structure claiming its working mode (PIO/DMA etc),
- * which can be save in the "controller_data" member of the
- * struct spi_device
- */
-struct dw_spi_chip {
-	u8 poll_mode;	/* 0 for contoller polling mode */
-	u8 type;	/* SPI/SSP/Micrwire */
-	u8 enable_dma;
-	void (*cs_control)(u32 command);
-};
-
-extern int dw_spi_add_host(struct dw_spi *dws);
-extern void dw_spi_remove_host(struct dw_spi *dws);
-extern int dw_spi_suspend_host(struct dw_spi *dws);
-extern int dw_spi_resume_host(struct dw_spi *dws);
-extern void dw_spi_xfer_done(struct dw_spi *dws);
-
-/* platform related setup */
-extern int dw_spi_mid_init(struct dw_spi *dws); /* Intel MID platforms */
-#endif /* DW_SPI_HEADER_H */