include/linux/via-core.h - third_party/kernel - Git at Google

 /* SPDX-License-Identifier: GPL-2.0-or-later */
 /*
  * Copyright 1998-2009 VIA Technologies, Inc. All Rights Reserved.
  * Copyright 2001-2008 S3 Graphics, Inc. All Rights Reserved.
  * Copyright 2009-2010 Jonathan Corbet <corbet@lwn.net>
  * Copyright 2010 Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
  */

 #ifndef __VIA_CORE_H__
 #define __VIA_CORE_H__
 #include <linux/types.h>
 #include <linux/io.h>
 #include <linux/spinlock.h>
 #include <linux/pci.h>

 /*
  * A description of each known serial I2C/GPIO port.
  */
 enum via_port_type {
 	VIA_PORT_NONE = 0,
 	VIA_PORT_I2C,
 	VIA_PORT_GPIO,
 };

 enum via_port_mode {
 	VIA_MODE_OFF = 0,
 	VIA_MODE_I2C,		/* Used as I2C port */
 	VIA_MODE_GPIO,	/* Two GPIO ports */
 };

 enum viafb_i2c_adap {
 	VIA_PORT_26 = 0,
 	VIA_PORT_31,
 	VIA_PORT_25,
 	VIA_PORT_2C,
 	VIA_PORT_3D,
 };
 #define VIAFB_NUM_PORTS 5

 struct via_port_cfg {
 	enum via_port_type	type;
 	enum via_port_mode	mode;
 	u16			io_port;
 	u8			ioport_index;
 };

 /*
  * Allow subdevs to register suspend/resume hooks.
  */
 struct viafb_pm_hooks {
 	struct list_head list;
 	int (*suspend)(void *private);
 	int (*resume)(void *private);
 	void *private;
 };

 void viafb_pm_register(struct viafb_pm_hooks *hooks);
 void viafb_pm_unregister(struct viafb_pm_hooks *hooks);

 /*
  * This is the global viafb "device" containing stuff needed by
  * all subdevs.
  */
 struct viafb_dev {
 	struct pci_dev *pdev;
 	int chip_type;
 	struct via_port_cfg *port_cfg;
 	/*
 	 * Spinlock for access to device registers.  Not yet
 	 * globally used.
 	 */
 	spinlock_t reg_lock;
 	/*
 	 * The framebuffer MMIO region.  Little, if anything, touches
 	 * this memory directly, and certainly nothing outside of the
 	 * framebuffer device itself.  We *do* have to be able to allocate
 	 * chunks of this memory for other devices, though.
 	 */
 	unsigned long fbmem_start;
 	long fbmem_len;
 	void __iomem *fbmem;
 #if defined(CONFIG_VIDEO_VIA_CAMERA) || defined(CONFIG_VIDEO_VIA_CAMERA_MODULE)
 	long camera_fbmem_offset;
 	long camera_fbmem_size;
 #endif
 	/*
 	 * The MMIO region for device registers.
 	 */
 	unsigned long engine_start;
 	unsigned long engine_len;
 	void __iomem *engine_mmio;

 };

 /*
  * Interrupt management.
  */

 void viafb_irq_enable(u32 mask);
 void viafb_irq_disable(u32 mask);

 /*
  * The global interrupt control register and its bits.
  */
 #define VDE_INTERRUPT	0x200	/* Video interrupt flags/masks */
 #define   VDE_I_DVISENSE  0x00000001  /* DVI sense int status */
 #define   VDE_I_VBLANK    0x00000002  /* Vertical blank status */
 #define   VDE_I_MCCFI	  0x00000004  /* MCE compl. frame int status */
 #define   VDE_I_VSYNC	  0x00000008  /* VGA VSYNC int status */
 #define   VDE_I_DMA0DDONE 0x00000010  /* DMA 0 descr done */
 #define   VDE_I_DMA0TDONE 0x00000020  /* DMA 0 transfer done */
 #define   VDE_I_DMA1DDONE 0x00000040  /* DMA 1 descr done */
 #define   VDE_I_DMA1TDONE 0x00000080  /* DMA 1 transfer done */
 #define   VDE_I_C1AV      0x00000100  /* Cap Eng 1 act vid end */
 #define   VDE_I_HQV0	  0x00000200  /* First HQV engine */
 #define   VDE_I_HQV1      0x00000400  /* Second HQV engine */
 #define   VDE_I_HQV1EN	  0x00000800  /* Second HQV engine enable */
 #define   VDE_I_C0AV      0x00001000  /* Cap Eng 0 act vid end */
 #define   VDE_I_C0VBI     0x00002000  /* Cap Eng 0 VBI end */
 #define   VDE_I_C1VBI     0x00004000  /* Cap Eng 1 VBI end */
 #define   VDE_I_VSYNC2    0x00008000  /* Sec. Disp. VSYNC */
 #define   VDE_I_DVISNSEN  0x00010000  /* DVI sense enable */
 #define   VDE_I_VSYNC2EN  0x00020000  /* Sec Disp VSYNC enable */
 #define   VDE_I_MCCFIEN	  0x00040000  /* MC comp frame int mask enable */
 #define   VDE_I_VSYNCEN   0x00080000  /* VSYNC enable */
 #define   VDE_I_DMA0DDEN  0x00100000  /* DMA 0 descr done enable */
 #define   VDE_I_DMA0TDEN  0x00200000  /* DMA 0 trans done enable */
 #define   VDE_I_DMA1DDEN  0x00400000  /* DMA 1 descr done enable */
 #define   VDE_I_DMA1TDEN  0x00800000  /* DMA 1 trans done enable */
 #define   VDE_I_C1AVEN    0x01000000  /* cap 1 act vid end enable */
 #define   VDE_I_HQV0EN	  0x02000000  /* First hqv engine enable */
 #define   VDE_I_C1VBIEN	  0x04000000  /* Cap 1 VBI end enable */
 #define   VDE_I_LVDSSI    0x08000000  /* LVDS sense interrupt */
 #define   VDE_I_C0AVEN    0x10000000  /* Cap 0 act vid end enable */
 #define   VDE_I_C0VBIEN   0x20000000  /* Cap 0 VBI end enable */
 #define   VDE_I_LVDSSIEN  0x40000000  /* LVDS Sense enable */
 #define   VDE_I_ENABLE	  0x80000000  /* Global interrupt enable */

 #if defined(CONFIG_VIDEO_VIA_CAMERA) || defined(CONFIG_VIDEO_VIA_CAMERA_MODULE)
 /*
  * DMA management.
  */
 int viafb_request_dma(void);
 void viafb_release_dma(void);
 /* void viafb_dma_copy_out(unsigned int offset, dma_addr_t paddr, int len); */
 int viafb_dma_copy_out_sg(unsigned int offset, struct scatterlist *sg, int nsg);

 /*
  * DMA Controller registers.
  */
 #define VDMA_MR0	0xe00		/* Mod reg 0 */
 #define   VDMA_MR_CHAIN   0x01		/* Chaining mode */
 #define   VDMA_MR_TDIE    0x02		/* Transfer done int enable */
 #define VDMA_CSR0	0xe04		/* Control/status */
 #define	  VDMA_C_ENABLE	  0x01		  /* DMA Enable */
 #define	  VDMA_C_START	  0x02		  /* Start a transfer */
 #define	  VDMA_C_ABORT	  0x04		  /* Abort a transfer */
 #define	  VDMA_C_DONE	  0x08		  /* Transfer is done */
 #define VDMA_MARL0	0xe20		/* Mem addr low */
 #define VDMA_MARH0	0xe24		/* Mem addr high */
 #define VDMA_DAR0	0xe28		/* Device address */
 #define VDMA_DQWCR0	0xe2c		/* Count (16-byte) */
 #define VDMA_TMR0	0xe30		/* Tile mode reg */
 #define VDMA_DPRL0	0xe34		/* Not sure */
 #define	  VDMA_DPR_IN	  0x08		/* Inbound transfer to FB */
 #define VDMA_DPRH0	0xe38
 #define VDMA_PMR0	(0xe00 + 0x134) /* Pitch mode */

 /*
  * Useful stuff that probably belongs somewhere global.
  */
 #define VGA_WIDTH	640
 #define VGA_HEIGHT	480
 #endif /* CONFIG_VIDEO_VIA_CAMERA */

 /*
  * Indexed port operations.  Note that these are all multi-op
  * functions; every invocation will be racy if you're not holding
  * reg_lock.
  */

 #define VIAStatus   0x3DA  /* Non-indexed port */
 #define VIACR       0x3D4
 #define VIASR       0x3C4
 #define VIAGR       0x3CE
 #define VIAAR       0x3C0

 static inline u8 via_read_reg(u16 port, u8 index)
 {
 	outb(index, port);
 	return inb(port + 1);
 }

 static inline void via_write_reg(u16 port, u8 index, u8 data)
 {
 	outb(index, port);
 	outb(data, port + 1);
 }

 static inline void via_write_reg_mask(u16 port, u8 index, u8 data, u8 mask)
 {
 	u8 old;

 	outb(index, port);
 	old = inb(port + 1);
 	outb((data & mask) | (old & ~mask), port + 1);
 }

 #define VIA_MISC_REG_READ	0x03CC
 #define VIA_MISC_REG_WRITE	0x03C2

 static inline void via_write_misc_reg_mask(u8 data, u8 mask)
 {
 	u8 old = inb(VIA_MISC_REG_READ);
 	outb((data & mask) | (old & ~mask), VIA_MISC_REG_WRITE);
 }


 #endif /* __VIA_CORE_H__ */
	/* SPDX-License-Identifier: GPL-2.0-or-later */
	/*
	* Copyright 1998-2009 VIA Technologies, Inc. All Rights Reserved.
	* Copyright 2001-2008 S3 Graphics, Inc. All Rights Reserved.
	* Copyright 2009-2010 Jonathan Corbet <corbet@lwn.net>
	* Copyright 2010 Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
	*/

	#ifndef __VIA_CORE_H__
	#define __VIA_CORE_H__
	#include <linux/types.h>
	#include <linux/io.h>
	#include <linux/spinlock.h>
	#include <linux/pci.h>

	/*
	* A description of each known serial I2C/GPIO port.
	*/
	enum via_port_type {
	VIA_PORT_NONE = 0,
	VIA_PORT_I2C,
	VIA_PORT_GPIO,
	};

	enum via_port_mode {
	VIA_MODE_OFF = 0,
	VIA_MODE_I2C, /* Used as I2C port */
	VIA_MODE_GPIO, /* Two GPIO ports */
	};

	enum viafb_i2c_adap {
	VIA_PORT_26 = 0,
	VIA_PORT_31,
	VIA_PORT_25,
	VIA_PORT_2C,
	VIA_PORT_3D,
	};
	#define VIAFB_NUM_PORTS 5

	struct via_port_cfg {
	enum via_port_type type;
	enum via_port_mode mode;
	u16 io_port;
	u8 ioport_index;
	};

	/*
	* Allow subdevs to register suspend/resume hooks.
	*/
	struct viafb_pm_hooks {
	struct list_head list;
	int (suspend)(void private);
	int (resume)(void private);
	void *private;
	};

	void viafb_pm_register(struct viafb_pm_hooks *hooks);
	void viafb_pm_unregister(struct viafb_pm_hooks *hooks);

	/*
	* This is the global viafb "device" containing stuff needed by
	* all subdevs.
	*/
	struct viafb_dev {
	struct pci_dev *pdev;
	int chip_type;
	struct via_port_cfg *port_cfg;
	/*
	* Spinlock for access to device registers. Not yet
	* globally used.
	*/
	spinlock_t reg_lock;
	/*
	* The framebuffer MMIO region. Little, if anything, touches
	* this memory directly, and certainly nothing outside of the
	* framebuffer device itself. We do have to be able to allocate
	* chunks of this memory for other devices, though.
	*/
	unsigned long fbmem_start;
	long fbmem_len;
	void __iomem *fbmem;
	#if defined(CONFIG_VIDEO_VIA_CAMERA) \|\| defined(CONFIG_VIDEO_VIA_CAMERA_MODULE)
	long camera_fbmem_offset;
	long camera_fbmem_size;
	#endif
	/*
	* The MMIO region for device registers.
	*/
	unsigned long engine_start;
	unsigned long engine_len;
	void __iomem *engine_mmio;

	};

	/*
	* Interrupt management.
	*/

	void viafb_irq_enable(u32 mask);
	void viafb_irq_disable(u32 mask);

	/*
	* The global interrupt control register and its bits.
	*/
	#define VDE_INTERRUPT 0x200 /* Video interrupt flags/masks */
	#define VDE_I_DVISENSE 0x00000001 /* DVI sense int status */
	#define VDE_I_VBLANK 0x00000002 /* Vertical blank status */
	#define VDE_I_MCCFI 0x00000004 /* MCE compl. frame int status */
	#define VDE_I_VSYNC 0x00000008 /* VGA VSYNC int status */
	#define VDE_I_DMA0DDONE 0x00000010 /* DMA 0 descr done */
	#define VDE_I_DMA0TDONE 0x00000020 /* DMA 0 transfer done */
	#define VDE_I_DMA1DDONE 0x00000040 /* DMA 1 descr done */
	#define VDE_I_DMA1TDONE 0x00000080 /* DMA 1 transfer done */
	#define VDE_I_C1AV 0x00000100 /* Cap Eng 1 act vid end */
	#define VDE_I_HQV0 0x00000200 /* First HQV engine */
	#define VDE_I_HQV1 0x00000400 /* Second HQV engine */
	#define VDE_I_HQV1EN 0x00000800 /* Second HQV engine enable */
	#define VDE_I_C0AV 0x00001000 /* Cap Eng 0 act vid end */
	#define VDE_I_C0VBI 0x00002000 /* Cap Eng 0 VBI end */
	#define VDE_I_C1VBI 0x00004000 /* Cap Eng 1 VBI end */
	#define VDE_I_VSYNC2 0x00008000 /* Sec. Disp. VSYNC */
	#define VDE_I_DVISNSEN 0x00010000 /* DVI sense enable */
	#define VDE_I_VSYNC2EN 0x00020000 /* Sec Disp VSYNC enable */
	#define VDE_I_MCCFIEN 0x00040000 /* MC comp frame int mask enable */
	#define VDE_I_VSYNCEN 0x00080000 /* VSYNC enable */
	#define VDE_I_DMA0DDEN 0x00100000 /* DMA 0 descr done enable */
	#define VDE_I_DMA0TDEN 0x00200000 /* DMA 0 trans done enable */
	#define VDE_I_DMA1DDEN 0x00400000 /* DMA 1 descr done enable */
	#define VDE_I_DMA1TDEN 0x00800000 /* DMA 1 trans done enable */
	#define VDE_I_C1AVEN 0x01000000 /* cap 1 act vid end enable */
	#define VDE_I_HQV0EN 0x02000000 /* First hqv engine enable */
	#define VDE_I_C1VBIEN 0x04000000 /* Cap 1 VBI end enable */
	#define VDE_I_LVDSSI 0x08000000 /* LVDS sense interrupt */
	#define VDE_I_C0AVEN 0x10000000 /* Cap 0 act vid end enable */
	#define VDE_I_C0VBIEN 0x20000000 /* Cap 0 VBI end enable */
	#define VDE_I_LVDSSIEN 0x40000000 /* LVDS Sense enable */
	#define VDE_I_ENABLE 0x80000000 /* Global interrupt enable */

	#if defined(CONFIG_VIDEO_VIA_CAMERA) \|\| defined(CONFIG_VIDEO_VIA_CAMERA_MODULE)
	/*
	* DMA management.
	*/
	int viafb_request_dma(void);
	void viafb_release_dma(void);
	/* void viafb_dma_copy_out(unsigned int offset, dma_addr_t paddr, int len); */
	int viafb_dma_copy_out_sg(unsigned int offset, struct scatterlist *sg, int nsg);

	/*
	* DMA Controller registers.
	*/
	#define VDMA_MR0 0xe00 /* Mod reg 0 */
	#define VDMA_MR_CHAIN 0x01 /* Chaining mode */
	#define VDMA_MR_TDIE 0x02 /* Transfer done int enable */
	#define VDMA_CSR0 0xe04 /* Control/status */
	#define VDMA_C_ENABLE 0x01 /* DMA Enable */
	#define VDMA_C_START 0x02 /* Start a transfer */
	#define VDMA_C_ABORT 0x04 /* Abort a transfer */
	#define VDMA_C_DONE 0x08 /* Transfer is done */
	#define VDMA_MARL0 0xe20 /* Mem addr low */
	#define VDMA_MARH0 0xe24 /* Mem addr high */
	#define VDMA_DAR0 0xe28 /* Device address */
	#define VDMA_DQWCR0 0xe2c /* Count (16-byte) */
	#define VDMA_TMR0 0xe30 /* Tile mode reg */
	#define VDMA_DPRL0 0xe34 /* Not sure */
	#define VDMA_DPR_IN 0x08 /* Inbound transfer to FB */
	#define VDMA_DPRH0 0xe38
	#define VDMA_PMR0 (0xe00 + 0x134) /* Pitch mode */

	/*
	* Useful stuff that probably belongs somewhere global.
	*/
	#define VGA_WIDTH 640
	#define VGA_HEIGHT 480
	#endif /* CONFIG_VIDEO_VIA_CAMERA */

	/*
	* Indexed port operations. Note that these are all multi-op
	* functions; every invocation will be racy if you're not holding
	* reg_lock.
	*/

	#define VIAStatus 0x3DA /* Non-indexed port */
	#define VIACR 0x3D4
	#define VIASR 0x3C4
	#define VIAGR 0x3CE
	#define VIAAR 0x3C0

	static inline u8 via_read_reg(u16 port, u8 index)
	{
	outb(index, port);
	return inb(port + 1);
	}

	static inline void via_write_reg(u16 port, u8 index, u8 data)
	{
	outb(index, port);
	outb(data, port + 1);
	}

	static inline void via_write_reg_mask(u16 port, u8 index, u8 data, u8 mask)
	{
	u8 old;

	outb(index, port);
	old = inb(port + 1);
	outb((data & mask) \| (old & ~mask), port + 1);
	}

	#define VIA_MISC_REG_READ 0x03CC
	#define VIA_MISC_REG_WRITE 0x03C2

	static inline void via_write_misc_reg_mask(u8 data, u8 mask)
	{
	u8 old = inb(VIA_MISC_REG_READ);
	outb((data & mask) \| (old & ~mask), VIA_MISC_REG_WRITE);
	}


	#endif /* __VIA_CORE_H__ */