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brcm80211: fmac: move chip drive strength related code to sdio_chip.c
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This patch is part of the abstracting chip backplane handle code
series.

Reviewed-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: Franky Lin <frankyl@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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Franky Lin authored and John W. Linville committed Nov 9, 2011
1 parent a8a6c04 commit e12afb6
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Showing 3 changed files with 117 additions and 115 deletions.
117 changes: 2 additions & 115 deletions drivers/net/wireless/brcm80211/brcmfmac/dhd_sdio.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -3704,120 +3704,6 @@ static bool brcmf_sdbrcm_probe_malloc(struct brcmf_bus *bus)
return false;
}

/* SDIO Pad drive strength to select value mappings */
struct sdiod_drive_str {
u8 strength; /* Pad Drive Strength in mA */
u8 sel; /* Chip-specific select value */
};

/* SDIO Drive Strength to sel value table for PMU Rev 1 */
static const struct sdiod_drive_str sdiod_drive_strength_tab1[] = {
{
4, 0x2}, {
2, 0x3}, {
1, 0x0}, {
0, 0x0}
};

/* SDIO Drive Strength to sel value table for PMU Rev 2, 3 */
static const struct sdiod_drive_str sdiod_drive_strength_tab2[] = {
{
12, 0x7}, {
10, 0x6}, {
8, 0x5}, {
6, 0x4}, {
4, 0x2}, {
2, 0x1}, {
0, 0x0}
};

/* SDIO Drive Strength to sel value table for PMU Rev 8 (1.8V) */
static const struct sdiod_drive_str sdiod_drive_strength_tab3[] = {
{
32, 0x7}, {
26, 0x6}, {
22, 0x5}, {
16, 0x4}, {
12, 0x3}, {
8, 0x2}, {
4, 0x1}, {
0, 0x0}
};

#define SDIOD_DRVSTR_KEY(chip, pmu) (((chip) << 16) | (pmu))

static char *brcmf_chipname(uint chipid, char *buf, uint len)
{
const char *fmt;

fmt = ((chipid > 0xa000) || (chipid < 0x4000)) ? "%d" : "%x";
snprintf(buf, len, fmt, chipid);
return buf;
}

static void brcmf_sdbrcm_sdiod_drive_strength_init(struct brcmf_bus *bus,
u32 drivestrength) {
struct sdiod_drive_str *str_tab = NULL;
u32 str_mask = 0;
u32 str_shift = 0;
char chn[8];

if (!(bus->ci->cccaps & CC_CAP_PMU))
return;

switch (SDIOD_DRVSTR_KEY(bus->ci->chip, bus->ci->pmurev)) {
case SDIOD_DRVSTR_KEY(BCM4325_CHIP_ID, 1):
str_tab = (struct sdiod_drive_str *)&sdiod_drive_strength_tab1;
str_mask = 0x30000000;
str_shift = 28;
break;
case SDIOD_DRVSTR_KEY(BCM4325_CHIP_ID, 2):
case SDIOD_DRVSTR_KEY(BCM4325_CHIP_ID, 3):
str_tab = (struct sdiod_drive_str *)&sdiod_drive_strength_tab2;
str_mask = 0x00003800;
str_shift = 11;
break;
case SDIOD_DRVSTR_KEY(BCM4336_CHIP_ID, 8):
str_tab = (struct sdiod_drive_str *)&sdiod_drive_strength_tab3;
str_mask = 0x00003800;
str_shift = 11;
break;
default:
brcmf_dbg(ERROR, "No SDIO Drive strength init done for chip %s rev %d pmurev %d\n",
brcmf_chipname(bus->ci->chip, chn, 8),
bus->ci->chiprev, bus->ci->pmurev);
break;
}

if (str_tab != NULL) {
u32 drivestrength_sel = 0;
u32 cc_data_temp;
int i;

for (i = 0; str_tab[i].strength != 0; i++) {
if (drivestrength >= str_tab[i].strength) {
drivestrength_sel = str_tab[i].sel;
break;
}
}

brcmf_sdcard_reg_write(bus->sdiodev,
CORE_CC_REG(bus->ci->cccorebase, chipcontrol_addr),
4, 1);
cc_data_temp = brcmf_sdcard_reg_read(bus->sdiodev,
CORE_CC_REG(bus->ci->cccorebase, chipcontrol_addr), 4);
cc_data_temp &= ~str_mask;
drivestrength_sel <<= str_shift;
cc_data_temp |= drivestrength_sel;
brcmf_sdcard_reg_write(bus->sdiodev,
CORE_CC_REG(bus->ci->cccorebase, chipcontrol_addr),
4, cc_data_temp);

brcmf_dbg(INFO, "SDIO: %dmA drive strength selected, set to 0x%08x\n",
drivestrength, cc_data_temp);
}
}

static bool
brcmf_sdbrcm_probe_attach(struct brcmf_bus *bus, u32 regsva)
{
Expand Down Expand Up @@ -3867,7 +3753,8 @@ brcmf_sdbrcm_probe_attach(struct brcmf_bus *bus, u32 regsva)
goto fail;
}

brcmf_sdbrcm_sdiod_drive_strength_init(bus, SDIO_DRIVE_STRENGTH);
brcmf_sdio_chip_drivestrengthinit(bus->sdiodev, bus->ci,
SDIO_DRIVE_STRENGTH);

/* Get info on the SOCRAM cores... */
bus->ramsize = bus->ci->ramsize;
Expand Down
112 changes: 112 additions & 0 deletions drivers/net/wireless/brcm80211/brcmfmac/sdio_chip.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -52,6 +52,44 @@
#define SBIDH_VC_MASK 0xffff0000 /* vendor code */
#define SBIDH_VC_SHIFT 16

#define SDIOD_DRVSTR_KEY(chip, pmu) (((chip) << 16) | (pmu))
/* SDIO Pad drive strength to select value mappings */
struct sdiod_drive_str {
u8 strength; /* Pad Drive Strength in mA */
u8 sel; /* Chip-specific select value */
};
/* SDIO Drive Strength to sel value table for PMU Rev 1 */
static const struct sdiod_drive_str sdiod_drive_strength_tab1[] = {
{
4, 0x2}, {
2, 0x3}, {
1, 0x0}, {
0, 0x0}
};
/* SDIO Drive Strength to sel value table for PMU Rev 2, 3 */
static const struct sdiod_drive_str sdiod_drive_strength_tab2[] = {
{
12, 0x7}, {
10, 0x6}, {
8, 0x5}, {
6, 0x4}, {
4, 0x2}, {
2, 0x1}, {
0, 0x0}
};
/* SDIO Drive Strength to sel value table for PMU Rev 8 (1.8V) */
static const struct sdiod_drive_str sdiod_drive_strength_tab3[] = {
{
32, 0x7}, {
26, 0x6}, {
22, 0x5}, {
16, 0x4}, {
12, 0x3}, {
8, 0x2}, {
4, 0x1}, {
0, 0x0}
};

static u32
brcmf_sdio_chip_corerev(struct brcmf_sdio_dev *sdiodev,
u32 corebase)
Expand Down Expand Up @@ -363,3 +401,77 @@ brcmf_sdio_chip_detach(struct chip_info **ci_ptr)
kfree(*ci_ptr);
*ci_ptr = NULL;
}

static char *brcmf_sdio_chip_name(uint chipid, char *buf, uint len)
{
const char *fmt;

fmt = ((chipid > 0xa000) || (chipid < 0x4000)) ? "%d" : "%x";
snprintf(buf, len, fmt, chipid);
return buf;
}

void
brcmf_sdio_chip_drivestrengthinit(struct brcmf_sdio_dev *sdiodev,
struct chip_info *ci, u32 drivestrength)
{
struct sdiod_drive_str *str_tab = NULL;
u32 str_mask = 0;
u32 str_shift = 0;
char chn[8];

if (!(ci->cccaps & CC_CAP_PMU))
return;

switch (SDIOD_DRVSTR_KEY(ci->chip, ci->pmurev)) {
case SDIOD_DRVSTR_KEY(BCM4325_CHIP_ID, 1):
str_tab = (struct sdiod_drive_str *)&sdiod_drive_strength_tab1;
str_mask = 0x30000000;
str_shift = 28;
break;
case SDIOD_DRVSTR_KEY(BCM4325_CHIP_ID, 2):
case SDIOD_DRVSTR_KEY(BCM4325_CHIP_ID, 3):
str_tab = (struct sdiod_drive_str *)&sdiod_drive_strength_tab2;
str_mask = 0x00003800;
str_shift = 11;
break;
case SDIOD_DRVSTR_KEY(BCM4336_CHIP_ID, 8):
str_tab = (struct sdiod_drive_str *)&sdiod_drive_strength_tab3;
str_mask = 0x00003800;
str_shift = 11;
break;
default:
brcmf_dbg(ERROR, "No SDIO Drive strength init done for chip %s rev %d pmurev %d\n",
brcmf_sdio_chip_name(ci->chip, chn, 8),
ci->chiprev, ci->pmurev);
break;
}

if (str_tab != NULL) {
u32 drivestrength_sel = 0;
u32 cc_data_temp;
int i;

for (i = 0; str_tab[i].strength != 0; i++) {
if (drivestrength >= str_tab[i].strength) {
drivestrength_sel = str_tab[i].sel;
break;
}
}

brcmf_sdcard_reg_write(sdiodev,
CORE_CC_REG(ci->cccorebase, chipcontrol_addr),
4, 1);
cc_data_temp = brcmf_sdcard_reg_read(sdiodev,
CORE_CC_REG(ci->cccorebase, chipcontrol_addr), 4);
cc_data_temp &= ~str_mask;
drivestrength_sel <<= str_shift;
cc_data_temp |= drivestrength_sel;
brcmf_sdcard_reg_write(sdiodev,
CORE_CC_REG(ci->cccorebase, chipcontrol_addr),
4, cc_data_temp);

brcmf_dbg(INFO, "SDIO: %dmA drive strength selected, set to 0x%08x\n",
drivestrength, cc_data_temp);
}
}
3 changes: 3 additions & 0 deletions drivers/net/wireless/brcm80211/brcmfmac/sdio_chip.h
View file
Original file line number Diff line number Diff line change
Expand Up @@ -142,5 +142,8 @@ extern void brcmf_sdio_chip_coredisable(struct brcmf_sdio_dev *sdiodev,
extern int brcmf_sdio_chip_attach(struct brcmf_sdio_dev *sdiodev,
struct chip_info **ci_ptr, u32 regs);
extern void brcmf_sdio_chip_detach(struct chip_info **ci_ptr);
extern void brcmf_sdio_chip_drivestrengthinit(struct brcmf_sdio_dev *sdiodev,
struct chip_info *ci,
u32 drivestrength);

#endif /* _BRCMFMAC_SDIO_CHIP_H_ */

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