Commit 6997af7c authored by David Woodhouse's avatar David Woodhouse
Browse files

Merge commit '371a0044' of... 

Merge commit '371a0044' of 'git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git

'

We need the following 2 patches from the 'net-next' tree for the BCMA flash
driver:

371a0044 bcma: detect and register NAND flash device
d57ef3a6 bcma: detect and register serial flash device

and this is why we are merging the net-next tree (presumably persistent)
up to commit '371a0044'.

Signed-off-by: default avatarArtem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: default avatarDavid Woodhouse <David.Woodhouse@intel.com>
parents 1749c00f 371a0044

drivers/bcma/Kconfig

+2 −2
Original line number Diff line number Diff line
@@ -48,12 +48,12 @@ config BCMA_DRIVER_MIPS 


config BCMA_SFLASH

	bool

	depends on BCMA_DRIVER_MIPS && BROKEN

	depends on BCMA_DRIVER_MIPS

	default y



config BCMA_NFLASH

	bool

	depends on BCMA_DRIVER_MIPS && BROKEN

	depends on BCMA_DRIVER_MIPS

	default y



config BCMA_DRIVER_GMAC_CMN

drivers/bcma/bcma_private.h

+2 −0
Original line number Diff line number Diff line
@@ -54,6 +54,7 @@ u32 bcma_pmu_get_clockcpu(struct bcma_drv_cc *cc); 
#ifdef CONFIG_BCMA_SFLASH

/* driver_chipcommon_sflash.c */

int bcma_sflash_init(struct bcma_drv_cc *cc);

extern struct platform_device bcma_sflash_dev;

#else

static inline int bcma_sflash_init(struct bcma_drv_cc *cc)

{
@@ -65,6 +66,7 @@ static inline int bcma_sflash_init(struct bcma_drv_cc *cc) 
#ifdef CONFIG_BCMA_NFLASH

/* driver_chipcommon_nflash.c */

int bcma_nflash_init(struct bcma_drv_cc *cc);

extern struct platform_device bcma_nflash_dev;

#else

static inline int bcma_nflash_init(struct bcma_drv_cc *cc)

{

drivers/bcma/driver_chipcommon_nflash.c

+25 −3
Original line number Diff line number Diff line
@@ -5,15 +5,37 @@ 
 * Licensed under the GNU/GPL. See COPYING for details.

 */



#include <linux/platform_device.h>

#include <linux/bcma/bcma.h>

#include <linux/bcma/bcma_driver_chipcommon.h>

#include <linux/delay.h>



#include "bcma_private.h"



struct platform_device bcma_nflash_dev = {

	.name		= "bcma_nflash",

	.num_resources	= 0,

};



/* Initialize NAND flash access */

int bcma_nflash_init(struct bcma_drv_cc *cc)

{

	bcma_err(cc->core->bus, "NAND flash support is broken\n");

	struct bcma_bus *bus = cc->core->bus;



	if (bus->chipinfo.id != BCMA_CHIP_ID_BCM4706 &&

	    cc->core->id.rev != 0x38) {

		bcma_err(bus, "NAND flash on unsupported board!\n");

		return -ENOTSUPP;

	}



	if (!(cc->capabilities & BCMA_CC_CAP_NFLASH)) {

		bcma_err(bus, "NAND flash not present according to ChipCommon\n");

		return -ENODEV;

	}



	cc->nflash.present = true;



	/* Prepare platform device, but don't register it yet. It's too early,

	 * malloc (required by device_private_init) is not available yet. */

	bcma_nflash_dev.dev.platform_data = &cc->nflash;



	return 0;

}

drivers/bcma/driver_chipcommon_pmu.c

+2 −2
Original line number Diff line number Diff line
@@ -101,7 +101,7 @@ void bcma_chipco_bcm4331_ext_pa_lines_ctl(struct bcma_drv_cc *cc, bool enable) 
	bcma_cc_write32(cc, BCMA_CC_CHIPCTL, val);

}



void bcma_pmu_workarounds(struct bcma_drv_cc *cc)

static void bcma_pmu_workarounds(struct bcma_drv_cc *cc)

{

	struct bcma_bus *bus = cc->core->bus;
@@ -257,7 +257,7 @@ static u32 bcma_pmu_clock_bcm4706(struct bcma_drv_cc *cc, u32 pll0, u32 m) 
}



/* query bus clock frequency for PMU-enabled chipcommon */

u32 bcma_pmu_get_clockcontrol(struct bcma_drv_cc *cc)

static u32 bcma_pmu_get_clockcontrol(struct bcma_drv_cc *cc)

{

	struct bcma_bus *bus = cc->core->bus;

drivers/bcma/driver_chipcommon_sflash.c

+120 −3
Original line number Diff line number Diff line
@@ -5,15 +5,132 @@ 
 * Licensed under the GNU/GPL. See COPYING for details.

 */



#include <linux/platform_device.h>

#include <linux/bcma/bcma.h>

#include <linux/bcma/bcma_driver_chipcommon.h>

#include <linux/delay.h>



#include "bcma_private.h"



static struct resource bcma_sflash_resource = {

	.name	= "bcma_sflash",

	.start	= BCMA_SFLASH,

	.end	= 0,

	.flags  = IORESOURCE_MEM | IORESOURCE_READONLY,

};



struct platform_device bcma_sflash_dev = {

	.name		= "bcma_sflash",

	.resource	= &bcma_sflash_resource,

	.num_resources	= 1,

};



struct bcma_sflash_tbl_e {

	char *name;

	u32 id;

	u32 blocksize;

	u16 numblocks;

};



static struct bcma_sflash_tbl_e bcma_sflash_st_tbl[] = {

	{ "", 0x14, 0x10000, 32, },

	{ 0 },

};



static struct bcma_sflash_tbl_e bcma_sflash_sst_tbl[] = {

	{ 0 },

};



static struct bcma_sflash_tbl_e bcma_sflash_at_tbl[] = {

	{ 0 },

};



static void bcma_sflash_cmd(struct bcma_drv_cc *cc, u32 opcode)

{

	int i;

	bcma_cc_write32(cc, BCMA_CC_FLASHCTL,

			BCMA_CC_FLASHCTL_START | opcode);

	for (i = 0; i < 1000; i++) {

		if (!(bcma_cc_read32(cc, BCMA_CC_FLASHCTL) &

		      BCMA_CC_FLASHCTL_BUSY))

			return;

		cpu_relax();

	}

	bcma_err(cc->core->bus, "SFLASH control command failed (timeout)!\n");

}



/* Initialize serial flash access */

int bcma_sflash_init(struct bcma_drv_cc *cc)

{

	bcma_err(cc->core->bus, "Serial flash support is broken\n");

	struct bcma_bus *bus = cc->core->bus;

	struct bcma_sflash *sflash = &cc->sflash;

	struct bcma_sflash_tbl_e *e;

	u32 id, id2;



	switch (cc->capabilities & BCMA_CC_CAP_FLASHT) {

	case BCMA_CC_FLASHT_STSER:

		bcma_sflash_cmd(cc, BCMA_CC_FLASHCTL_ST_DP);



		bcma_cc_write32(cc, BCMA_CC_FLASHADDR, 0);

		bcma_sflash_cmd(cc, BCMA_CC_FLASHCTL_ST_RES);

		id = bcma_cc_read32(cc, BCMA_CC_FLASHDATA);



		bcma_cc_write32(cc, BCMA_CC_FLASHADDR, 1);

		bcma_sflash_cmd(cc, BCMA_CC_FLASHCTL_ST_RES);

		id2 = bcma_cc_read32(cc, BCMA_CC_FLASHDATA);



		switch (id) {

		case 0xbf:

			for (e = bcma_sflash_sst_tbl; e->name; e++) {

				if (e->id == id2)

					break;

			}

			break;

		default:

			for (e = bcma_sflash_st_tbl; e->name; e++) {

				if (e->id == id)

					break;

			}

			break;

		}

		if (!e->name) {

			bcma_err(bus, "Unsupported ST serial flash (id: 0x%X, id2: 0x%X)\n", id, id2);

			return -ENOTSUPP;

		}



		break;

	case BCMA_CC_FLASHT_ATSER:

		bcma_sflash_cmd(cc, BCMA_CC_FLASHCTL_AT_STATUS);

		id = bcma_cc_read32(cc, BCMA_CC_FLASHDATA) & 0x3c;



		for (e = bcma_sflash_at_tbl; e->name; e++) {

			if (e->id == id)

				break;

		}

		if (!e->name) {

			bcma_err(bus, "Unsupported Atmel serial flash (id: 0x%X)\n", id);

			return -ENOTSUPP;

		}



		break;

	default:

		bcma_err(bus, "Unsupported flash type\n");

		return -ENOTSUPP;

	}



	sflash->window = BCMA_SFLASH;

	sflash->blocksize = e->blocksize;

	sflash->numblocks = e->numblocks;

	sflash->size = sflash->blocksize * sflash->numblocks;

	sflash->present = true;



	bcma_info(bus, "Found %s serial flash (size: %dKiB, blocksize: 0x%X, blocks: %d)\n",

		  e->name, sflash->size / 1024, sflash->blocksize,

		  sflash->numblocks);



	/* Prepare platform device, but don't register it yet. It's too early,

	 * malloc (required by device_private_init) is not available yet. */

	bcma_sflash_dev.resource[0].end = bcma_sflash_dev.resource[0].start +

					  sflash->size;

	bcma_sflash_dev.dev.platform_data = sflash;



	return 0;

}

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