leandrof/linux
1
0
Fork 0
forked from Minki/linux
Code Issues Pull Requests Packages Projects Releases Wiki Activity

brcmfmac: Add drive strength programming for SDIO 43143.

Browse Source 
Reviewed-by: Arend Van Spriel <arend@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Reviewed-by: Piotr Haber <phaber@broadcom.com>
Signed-off-by: Hante Meuleman <meuleman@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Hante Meuleman 2013-04-11 13:28:55 +02:00 committed by John W. Linville
parent 369508c565
commit 979c29205f
1 changed files with 34 additions and 19 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

53
drivers/net/wireless/brcm80211/brcmfmac/sdio_chip.c
View File

@ -82,6 +82,14 @@ static const struct sdiod_drive_str sdiod_drvstr_tab1_1v8[] = {
{0, 0x1}
};
/* SDIO Drive Strength to sel value table for 43143 PMU Rev 17 (3.3V) */
static const struct sdiod_drive_str sdiod_drvstr_tab2_3v3[] = {
{16, 0x7},
{12, 0x5},
{8, 0x3},
{4, 0x1}
};
u8
brcmf_sdio_chip_getinfidx(struct chip_info *ci, u16 coreid)
{
@ -702,21 +710,37 @@ 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;
const struct sdiod_drive_str *str_tab = NULL;
u32 str_mask;
u32 str_shift;
char chn[8];
u32 base = ci->c_inf[0].base;
u32 i;
u32 drivestrength_sel = 0;
u32 cc_data_temp;
u32 addr;
if (!(ci->c_inf[0].caps & CC_CAP_PMU))
return;
switch (SDIOD_DRVSTR_KEY(ci->chip, ci->pmurev)) {
case SDIOD_DRVSTR_KEY(BCM4330_CHIP_ID, 12):
str_tab = (struct sdiod_drive_str *)&sdiod_drvstr_tab1_1v8;
str_tab = sdiod_drvstr_tab1_1v8;
str_mask = 0x00003800;
str_shift = 11;
break;
case SDIOD_DRVSTR_KEY(BCM43143_CHIP_ID, 17):
/* note: 43143 does not support tristate */
i = ARRAY_SIZE(sdiod_drvstr_tab2_3v3) - 1;
if (drivestrength >= sdiod_drvstr_tab2_3v3[i].strength) {
str_tab = sdiod_drvstr_tab2_3v3;
str_mask = 0x00000007;
str_shift = 0;
} else
brcmf_err("Invalid SDIO Drive strength for chip %s, strength=%d\n",
brcmf_sdio_chip_name(ci->chip, chn, 8),
drivestrength);
break;
default:
brcmf_err("No SDIO Drive strength init done for chip %s rev %d pmurev %d\n",
brcmf_sdio_chip_name(ci->chip, chn, 8),
@ -725,31 +749,22 @@ brcmf_sdio_chip_drivestrengthinit(struct brcmf_sdio_dev *sdiodev,
}
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_sdio_regwl(sdiodev, CORE_CC_REG(base, chipcontrol_addr),
1, NULL);
cc_data_temp =
brcmf_sdio_regrl(sdiodev,
CORE_CC_REG(base, chipcontrol_addr),
NULL);
addr = CORE_CC_REG(base, chipcontrol_addr);
brcmf_sdio_regwl(sdiodev, addr, 1, NULL);
cc_data_temp = brcmf_sdio_regrl(sdiodev, addr, NULL);
cc_data_temp &= ~str_mask;
drivestrength_sel <<= str_shift;
cc_data_temp |= drivestrength_sel;
brcmf_sdio_regwl(sdiodev, CORE_CC_REG(base, chipcontrol_addr),
cc_data_temp, NULL);
brcmf_sdio_regwl(sdiodev, addr, cc_data_temp, NULL);
brcmf_dbg(INFO, "SDIO: %dmA drive strength selected, set to 0x%08x\n",
drivestrength, cc_data_temp);
brcmf_dbg(INFO, "SDIO: %d mA (req=%d mA) drive strength selected, set to 0x%08x\n",
str_tab[i].strength, drivestrength, cc_data_temp);
}
}