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bcma: add mips driver

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This adds a mips driver to bcma. This is only found on embedded
devices. For now the driver just initializes the irqs used on this
system.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Acked-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Hauke Mehrtens 2011-07-23 01:20:09 +02:00 • committed by John W. Linville
commit 21e0534ad7
7 changed files with 333 additions and 0 deletions
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3
include/linux/bcma/bcma.h
View file

@ -6,6 +6,7 @@
#include <linux/bcma/bcma_driver_chipcommon.h>
#include <linux/bcma/bcma_driver_pci.h>
#include <linux/bcma/bcma_driver_mips.h>
#include <linux/ssb/ssb.h> /* SPROM sharing */
#include "bcma_regs.h"
@ -130,6 +131,7 @@ struct bcma_device {
struct device dev;
struct device *dma_dev;
unsigned int irq;
bool dev_registered;
@ -197,6 +199,7 @@ struct bcma_bus {
struct bcma_drv_cc drv_cc;
struct bcma_drv_pci drv_pci;
struct bcma_drv_mips drv_mips;
/* We decided to share SPROM struct with SSB as long as we do not need
* any hacks for BCMA. This simplifies drivers code. */

13
include/linux/bcma/bcma_driver_chipcommon.h
View file

@ -24,6 +24,7 @@
#define BCMA_CC_FLASHT_NONE 0x00000000 /* No flash */
#define BCMA_CC_FLASHT_STSER 0x00000100 /* ST serial flash */
#define BCMA_CC_FLASHT_ATSER 0x00000200 /* Atmel serial flash */
#define BCMA_CC_FLASHT_NFLASH 0x00000200
#define BCMA_CC_FLASHT_PARA 0x00000700 /* Parallel flash */
#define BCMA_CC_CAP_PLLT 0x00038000 /* PLL Type */
#define BCMA_PLLTYPE_NONE 0x00000000
@ -178,6 +179,7 @@
#define BCMA_CC_PROG_CFG 0x0120
#define BCMA_CC_PROG_WAITCNT 0x0124
#define BCMA_CC_FLASH_CFG 0x0128
#define BCMA_CC_FLASH_CFG_DS 0x0010 /* Data size, 0=8bit, 1=16bit */
#define BCMA_CC_FLASH_WAITCNT 0x012C
/* 0x1E0 is defined as shared BCMA_CLKCTLST */
#define BCMA_CC_HW_WORKAROUND 0x01E4 /* Hardware workaround (rev >= 20) */
@ -247,6 +249,14 @@ struct bcma_chipcommon_pmu {
u32 crystalfreq; /* The active crystal frequency (in kHz) */
};
#ifdef CONFIG_BCMA_DRIVER_MIPS
struct bcma_pflash {
u8 buswidth;
u32 window;
u32 window_size;
};
#endif /* CONFIG_BCMA_DRIVER_MIPS */
struct bcma_drv_cc {
struct bcma_device *core;
u32 status;
@ -256,6 +266,9 @@ struct bcma_drv_cc {
/* Fast Powerup Delay constant */
u16 fast_pwrup_delay;
struct bcma_chipcommon_pmu pmu;
#ifdef CONFIG_BCMA_DRIVER_MIPS
struct bcma_pflash pflash;
#endif /* CONFIG_BCMA_DRIVER_MIPS */
};
/* Register access */

49
include/linux/bcma/bcma_driver_mips.h Normal file
View file

@ -0,0 +1,49 @@
#ifndef LINUX_BCMA_DRIVER_MIPS_H_
#define LINUX_BCMA_DRIVER_MIPS_H_
#define BCMA_MIPS_IPSFLAG 0x0F08
/* which sbflags get routed to mips interrupt 1 */
#define BCMA_MIPS_IPSFLAG_IRQ1 0x0000003F
#define BCMA_MIPS_IPSFLAG_IRQ1_SHIFT 0
/* which sbflags get routed to mips interrupt 2 */
#define BCMA_MIPS_IPSFLAG_IRQ2 0x00003F00
#define BCMA_MIPS_IPSFLAG_IRQ2_SHIFT 8
/* which sbflags get routed to mips interrupt 3 */
#define BCMA_MIPS_IPSFLAG_IRQ3 0x003F0000
#define BCMA_MIPS_IPSFLAG_IRQ3_SHIFT 16
/* which sbflags get routed to mips interrupt 4 */
#define BCMA_MIPS_IPSFLAG_IRQ4 0x3F000000
#define BCMA_MIPS_IPSFLAG_IRQ4_SHIFT 24
/* MIPS 74K core registers */
#define BCMA_MIPS_MIPS74K_CORECTL 0x0000
#define BCMA_MIPS_MIPS74K_EXCEPTBASE 0x0004
#define BCMA_MIPS_MIPS74K_BIST 0x000C
#define BCMA_MIPS_MIPS74K_INTMASK_INT0 0x0014
#define BCMA_MIPS_MIPS74K_INTMASK(int) \
((int) * 4 + BCMA_MIPS_MIPS74K_INTMASK_INT0)
#define BCMA_MIPS_MIPS74K_NMIMASK 0x002C
#define BCMA_MIPS_MIPS74K_GPIOSEL 0x0040
#define BCMA_MIPS_MIPS74K_GPIOOUT 0x0044
#define BCMA_MIPS_MIPS74K_GPIOEN 0x0048
#define BCMA_MIPS_MIPS74K_CLKCTLST 0x01E0
#define BCMA_MIPS_OOBSELOUTA30 0x100
struct bcma_device;
struct bcma_drv_mips {
struct bcma_device *core;
u8 setup_done:1;
unsigned int assigned_irqs;
};
#ifdef CONFIG_BCMA_DRIVER_MIPS
extern void bcma_core_mips_init(struct bcma_drv_mips *mcore);
#else
static inline void bcma_core_mips_init(struct bcma_drv_mips *mcore) { }
#endif
extern unsigned int bcma_core_mips_irq(struct bcma_device *dev);
#endif /* LINUX_BCMA_DRIVER_MIPS_H_ */