brcm80211: fmac: move chip drive strength related code to sdio_chip.c
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>
diff --git a/drivers/net/wireless/brcm80211/brcmfmac/sdio_chip.c b/drivers/net/wireless/brcm80211/brcmfmac/sdio_chip.c
index ea12a4c..e068107 100644
--- a/drivers/net/wireless/brcm80211/brcmfmac/sdio_chip.c
+++ b/drivers/net/wireless/brcm80211/brcmfmac/sdio_chip.c
@@ -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)
@@ -363,3 +401,77 @@
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);
+ }
+}