Commit eb1577b7 authored by Rafał Miłecki's avatar Rafał Miłecki Committed by John W. Linville
Browse files

bcma: handle alternative SPROM location 



Some cards do not use additional 0x30 offset for SPROM location. We do
not know the real condition for it yet, make it BCM4331 specific for
now.

Signed-off-by: default avatarRafał Miłecki <zajec5@gmail.com>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent b473bc17

drivers/bcma/sprom.c

+9 −3
Original line number Diff line number Diff line
@@ -20,12 +20,12 @@ 
 * R/W ops.

 **************************************************/



static void bcma_sprom_read(struct bcma_bus *bus, u16 *sprom)

static void bcma_sprom_read(struct bcma_bus *bus, u16 offset, u16 *sprom)

{

	int i;

	for (i = 0; i < SSB_SPROMSIZE_WORDS_R4; i++)

		sprom[i] = bcma_read16(bus->drv_cc.core,

				       BCMA_CC_SPROM + (i * 2));

				       offset + (i * 2));

}



/**************************************************
@@ -137,6 +137,7 @@ static void bcma_sprom_extract_r8(struct bcma_bus *bus, const u16 *sprom) 


int bcma_sprom_get(struct bcma_bus *bus)

{

	u16 offset;

	u16 *sprom;

	int err = 0;
@@ -151,7 +152,12 @@ int bcma_sprom_get(struct bcma_bus *bus) 
	if (!sprom)

		return -ENOMEM;



	bcma_sprom_read(bus, sprom);

	/* Most cards have SPROM moved by additional offset 0x30 (48 dwords).

	 * According to brcm80211 this applies to cards with PCIe rev >= 6

	 * TODO: understand this condition and use it */

	offset = (bus->chipinfo.id == 0x4331) ? BCMA_CC_SPROM :

		BCMA_CC_SPROM_PCIE6;

	bcma_sprom_read(bus, offset, sprom);



	err = bcma_sprom_valid(sprom);

	if (err)

include/linux/bcma/bcma_driver_chipcommon.h

+2 −1
Original line number Diff line number Diff line
@@ -244,7 +244,8 @@ 
#define BCMA_CC_REGCTL_DATA		0x065C

#define BCMA_CC_PLLCTL_ADDR		0x0660

#define BCMA_CC_PLLCTL_DATA		0x0664

#define BCMA_CC_SPROM			0x0830 /* SPROM beginning */

#define BCMA_CC_SPROM			0x0800 /* SPROM beginning */

#define BCMA_CC_SPROM_PCIE6		0x0830 /* SPROM beginning on PCIe rev >= 6 */



/* Data for the PMU, if available.

 * Check availability with ((struct bcma_chipcommon)->capabilities & BCMA_CC_CAP_PMU)