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Commit 9c8f8e75 authored by Haavard Skinnemoen's avatar Haavard Skinnemoen
Browse files

[AVR32] Add basic HMATRIX support 



This adds register and clock definitions for the High-speed bus Matrix
(HMATRIX) as well as a function that can be used to configure special
EBI functionality like CompactFlash and NAND flash support.

Signed-off-by: default avatarHaavard Skinnemoen <hskinnemoen@atmel.com>
parent de46c337

arch/avr32/mach-at32ap/at32ap7000.c

+38 −0
Original line number Diff line number Diff line
@@ -18,6 +18,7 @@ 
#include <asm/arch/sm.h>



#include "clock.h"

#include "hmatrix.h"

#include "pio.h"

#include "sm.h"
@@ -466,6 +467,42 @@ static struct clk pico_clk = { 
	.users		= 1,

};



/* --------------------------------------------------------------------

 * HMATRIX

 * -------------------------------------------------------------------- */



static struct clk hmatrix_clk = {

	.name		= "hmatrix_clk",

	.parent		= &pbb_clk,

	.mode		= pbb_clk_mode,

	.get_rate	= pbb_clk_get_rate,

	.index		= 2,

	.users		= 1,

};

#define HMATRIX_BASE	((void __iomem *)0xfff00800)



#define hmatrix_readl(reg)					\

	__raw_readl((HMATRIX_BASE) + HMATRIX_##reg)

#define hmatrix_writel(reg,value)				\

	__raw_writel((value), (HMATRIX_BASE) + HMATRIX_##reg)



/*

 * Set bits in the HMATRIX Special Function Register (SFR) used by the

 * External Bus Interface (EBI). This can be used to enable special

 * features like CompactFlash support, NAND Flash support, etc. on

 * certain chipselects.

 */

static inline void set_ebi_sfr_bits(u32 mask)

{

	u32 sfr;



	clk_enable(&hmatrix_clk);

	sfr = hmatrix_readl(SFR4);

	sfr |= mask;

	hmatrix_writel(SFR4, sfr);

	clk_disable(&hmatrix_clk);

}



/* --------------------------------------------------------------------

 *  PIO

 * -------------------------------------------------------------------- */
@@ -950,6 +987,7 @@ struct clk *at32_clock_list[] = { 
	&pbb_clk,

	&at32_sm_pclk,

	&at32_intc0_pclk,

	&hmatrix_clk,

	&ebi_clk,

	&hramc_clk,

	&smc0_pclk,

arch/avr32/mach-at32ap/hmatrix.h

0 → 100644
+182 −0
Original line number Diff line number Diff line 
/*

 * Register definitions for High-Speed Bus Matrix

 */

#ifndef __HMATRIX_H

#define __HMATRIX_H



/* HMATRIX register offsets */

#define HMATRIX_MCFG0				0x0000

#define HMATRIX_MCFG1				0x0004

#define HMATRIX_MCFG2				0x0008

#define HMATRIX_MCFG3				0x000c

#define HMATRIX_MCFG4				0x0010

#define HMATRIX_MCFG5				0x0014

#define HMATRIX_MCFG6				0x0018

#define HMATRIX_MCFG7				0x001c

#define HMATRIX_MCFG8				0x0020

#define HMATRIX_MCFG9				0x0024

#define HMATRIX_MCFG10				0x0028

#define HMATRIX_MCFG11				0x002c

#define HMATRIX_MCFG12				0x0030

#define HMATRIX_MCFG13				0x0034

#define HMATRIX_MCFG14				0x0038

#define HMATRIX_MCFG15				0x003c

#define HMATRIX_SCFG0				0x0040

#define HMATRIX_SCFG1				0x0044

#define HMATRIX_SCFG2				0x0048

#define HMATRIX_SCFG3				0x004c

#define HMATRIX_SCFG4				0x0050

#define HMATRIX_SCFG5				0x0054

#define HMATRIX_SCFG6				0x0058

#define HMATRIX_SCFG7				0x005c

#define HMATRIX_SCFG8				0x0060

#define HMATRIX_SCFG9				0x0064

#define HMATRIX_SCFG10				0x0068

#define HMATRIX_SCFG11				0x006c

#define HMATRIX_SCFG12				0x0070

#define HMATRIX_SCFG13				0x0074

#define HMATRIX_SCFG14				0x0078

#define HMATRIX_SCFG15				0x007c

#define HMATRIX_PRAS0				0x0080

#define HMATRIX_PRBS0				0x0084

#define HMATRIX_PRAS1				0x0088

#define HMATRIX_PRBS1				0x008c

#define HMATRIX_PRAS2				0x0090

#define HMATRIX_PRBS2				0x0094

#define HMATRIX_PRAS3				0x0098

#define HMATRIX_PRBS3				0x009c

#define HMATRIX_PRAS4				0x00a0

#define HMATRIX_PRBS4				0x00a4

#define HMATRIX_PRAS5				0x00a8

#define HMATRIX_PRBS5				0x00ac

#define HMATRIX_PRAS6				0x00b0

#define HMATRIX_PRBS6				0x00b4

#define HMATRIX_PRAS7				0x00b8

#define HMATRIX_PRBS7				0x00bc

#define HMATRIX_PRAS8				0x00c0

#define HMATRIX_PRBS8				0x00c4

#define HMATRIX_PRAS9				0x00c8

#define HMATRIX_PRBS9				0x00cc

#define HMATRIX_PRAS10				0x00d0

#define HMATRIX_PRBS10				0x00d4

#define HMATRIX_PRAS11				0x00d8

#define HMATRIX_PRBS11				0x00dc

#define HMATRIX_PRAS12				0x00e0

#define HMATRIX_PRBS12				0x00e4

#define HMATRIX_PRAS13				0x00e8

#define HMATRIX_PRBS13				0x00ec

#define HMATRIX_PRAS14				0x00f0

#define HMATRIX_PRBS14				0x00f4

#define HMATRIX_PRAS15				0x00f8

#define HMATRIX_PRBS15				0x00fc

#define HMATRIX_MRCR				0x0100

#define HMATRIX_SFR0				0x0110

#define HMATRIX_SFR1				0x0114

#define HMATRIX_SFR2				0x0118

#define HMATRIX_SFR3				0x011c

#define HMATRIX_SFR4				0x0120

#define HMATRIX_SFR5				0x0124

#define HMATRIX_SFR6				0x0128

#define HMATRIX_SFR7				0x012c

#define HMATRIX_SFR8				0x0130

#define HMATRIX_SFR9				0x0134

#define HMATRIX_SFR10				0x0138

#define HMATRIX_SFR11				0x013c

#define HMATRIX_SFR12				0x0140

#define HMATRIX_SFR13				0x0144

#define HMATRIX_SFR14				0x0148

#define HMATRIX_SFR15				0x014c



/* Bitfields in MCFGx */

#define HMATRIX_ULBT_OFFSET			0

#define HMATRIX_ULBT_SIZE			3



/* Bitfields in SCFGx */

#define HMATRIX_SLOT_CYCLE_OFFSET		0

#define HMATRIX_SLOT_CYCLE_SIZE			8

#define HMATRIX_DEFMSTR_TYPE_OFFSET		16

#define HMATRIX_DEFMSTR_TYPE_SIZE		2

#define HMATRIX_FIXED_DEFMSTR_OFFSET		18

#define HMATRIX_FIXED_DEFMSTR_SIZE		4

#define HMATRIX_ARBT_OFFSET			24

#define HMATRIX_ARBT_SIZE			2



/* Bitfields in PRASx */

#define HMATRIX_M0PR_OFFSET			0

#define HMATRIX_M0PR_SIZE			4

#define HMATRIX_M1PR_OFFSET			4

#define HMATRIX_M1PR_SIZE			4

#define HMATRIX_M2PR_OFFSET			8

#define HMATRIX_M2PR_SIZE			4

#define HMATRIX_M3PR_OFFSET			12

#define HMATRIX_M3PR_SIZE			4

#define HMATRIX_M4PR_OFFSET			16

#define HMATRIX_M4PR_SIZE			4

#define HMATRIX_M5PR_OFFSET			20

#define HMATRIX_M5PR_SIZE			4

#define HMATRIX_M6PR_OFFSET			24

#define HMATRIX_M6PR_SIZE			4

#define HMATRIX_M7PR_OFFSET			28

#define HMATRIX_M7PR_SIZE			4



/* Bitfields in PRBSx */

#define HMATRIX_M8PR_OFFSET			0

#define HMATRIX_M8PR_SIZE			4

#define HMATRIX_M9PR_OFFSET			4

#define HMATRIX_M9PR_SIZE			4

#define HMATRIX_M10PR_OFFSET			8

#define HMATRIX_M10PR_SIZE			4

#define HMATRIX_M11PR_OFFSET			12

#define HMATRIX_M11PR_SIZE			4

#define HMATRIX_M12PR_OFFSET			16

#define HMATRIX_M12PR_SIZE			4

#define HMATRIX_M13PR_OFFSET			20

#define HMATRIX_M13PR_SIZE			4

#define HMATRIX_M14PR_OFFSET			24

#define HMATRIX_M14PR_SIZE			4

#define HMATRIX_M15PR_OFFSET			28

#define HMATRIX_M15PR_SIZE			4



/* Bitfields in SFR4 */

#define HMATRIX_CS1A_OFFSET			1

#define HMATRIX_CS1A_SIZE			1

#define HMATRIX_CS3A_OFFSET			3

#define HMATRIX_CS3A_SIZE			1

#define HMATRIX_CS4A_OFFSET			4

#define HMATRIX_CS4A_SIZE			1

#define HMATRIX_CS5A_OFFSET			5

#define HMATRIX_CS5A_SIZE			1

#define HMATRIX_DBPUC_OFFSET			8

#define HMATRIX_DBPUC_SIZE			1



/* Constants for ULBT */

#define HMATRIX_ULBT_INFINITE			0

#define HMATRIX_ULBT_SINGLE			1

#define HMATRIX_ULBT_FOUR_BEAT			2

#define HMATRIX_ULBT_EIGHT_BEAT			3

#define HMATRIX_ULBT_SIXTEEN_BEAT		4



/* Constants for DEFMSTR_TYPE */

#define HMATRIX_DEFMSTR_TYPE_NO_DEFAULT		0

#define HMATRIX_DEFMSTR_TYPE_LAST_DEFAULT	1

#define HMATRIX_DEFMSTR_TYPE_FIXED_DEFAULT	2



/* Constants for ARBT */

#define HMATRIX_ARBT_ROUND_ROBIN		0

#define HMATRIX_ARBT_FIXED_PRIORITY		1



/* Bit manipulation macros */

#define HMATRIX_BIT(name)					\

	(1 << HMATRIX_##name##_OFFSET)

#define HMATRIX_BF(name,value)					\

	(((value) & ((1 << HMATRIX_##name##_SIZE) - 1))		\

	 << HMATRIX_##name##_OFFSET)

#define HMATRIX_BFEXT(name,value)				\

	(((value) >> HMATRIX_##name##_OFFSET)			\

	 & ((1 << HMATRIX_##name##_SIZE) - 1))

#define HMATRIX_BFINS(name,value,old)				\

	(((old) & ~(((1 << HMATRIX_##name##_SIZE) - 1)		\

		    << HMATRIX_##name##_OFFSET))		\

	 | HMATRIX_BF(name,value))



#endif /* __HMATRIX_H */