diff options
Diffstat (limited to 'drivers/net/wireless/bcmdhd/hndpmu.c')
| -rwxr-xr-x | drivers/net/wireless/bcmdhd/hndpmu.c | 197 |
1 files changed, 197 insertions, 0 deletions
diff --git a/drivers/net/wireless/bcmdhd/hndpmu.c b/drivers/net/wireless/bcmdhd/hndpmu.c new file mode 100755 index 0000000..eeee5ea --- /dev/null +++ b/drivers/net/wireless/bcmdhd/hndpmu.c @@ -0,0 +1,197 @@ +/* + * Misc utility routines for accessing PMU corerev specific features + * of the SiliconBackplane-based Broadcom chips. + * + * Copyright (C) 1999-2012, Broadcom Corporation + * + * Unless you and Broadcom execute a separate written software license + * agreement governing use of this software, this software is licensed to you + * under the terms of the GNU General Public License version 2 (the "GPL"), + * available at http://www.broadcom.com/licenses/GPLv2.php, with the + * following added to such license: + * + * As a special exception, the copyright holders of this software give you + * permission to link this software with independent modules, and to copy and + * distribute the resulting executable under terms of your choice, provided that + * you also meet, for each linked independent module, the terms and conditions of + * the license of that module. An independent module is a module which is not + * derived from this software. The special exception does not apply to any + * modifications of the software. + * + * Notwithstanding the above, under no circumstances may you combine this + * software in any way with any other Broadcom software provided under a license + * other than the GPL, without Broadcom's express prior written consent. + * + * $Id: hndpmu.c 324060 2012-03-27 23:26:47Z $ + */ + +#include <bcm_cfg.h> +#include <typedefs.h> +#include <bcmdefs.h> +#include <osl.h> +#include <bcmutils.h> +#include <siutils.h> +#include <bcmdevs.h> +#include <hndsoc.h> +#include <sbchipc.h> +#include <hndpmu.h> + +#define PMU_ERROR(args) + +#define PMU_MSG(args) + +/* To check in verbose debugging messages not intended + * to be on except on private builds. + */ +#define PMU_NONE(args) + + +/* SDIO Pad drive strength to select value mappings. + * The last strength value in each table must be 0 (the tri-state value). + */ +typedef struct { + uint8 strength; /* Pad Drive Strength in mA */ + uint8 sel; /* Chip-specific select value */ +} sdiod_drive_str_t; + +/* SDIO Drive Strength to sel value table for PMU Rev 1 */ +static const sdiod_drive_str_t 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 sdiod_drive_str_t 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 sdiod_drive_str_t sdiod_drive_strength_tab3[] = { + {32, 0x7}, + {26, 0x6}, + {22, 0x5}, + {16, 0x4}, + {12, 0x3}, + {8, 0x2}, + {4, 0x1}, + {0, 0x0} }; + +/* SDIO Drive Strength to sel value table for PMU Rev 11 (1.8v) */ +static const sdiod_drive_str_t sdiod_drive_strength_tab4_1v8[] = { + {32, 0x6}, + {26, 0x7}, + {22, 0x4}, + {16, 0x5}, + {12, 0x2}, + {8, 0x3}, + {4, 0x0}, + {0, 0x1} }; + +/* SDIO Drive Strength to sel value table for PMU Rev 11 (1.2v) */ + +/* SDIO Drive Strength to sel value table for PMU Rev 11 (2.5v) */ + +/* SDIO Drive Strength to sel value table for PMU Rev 13 (1.8v) */ +static const sdiod_drive_str_t sdiod_drive_strength_tab5_1v8[] = { + {6, 0x7}, + {5, 0x6}, + {4, 0x5}, + {3, 0x4}, + {2, 0x2}, + {1, 0x1}, + {0, 0x0} }; + +/* SDIO Drive Strength to sel value table for PMU Rev 13 (3.3v) */ + + +#define SDIOD_DRVSTR_KEY(chip, pmu) (((chip) << 16) | (pmu)) + +void +si_sdiod_drive_strength_init(si_t *sih, osl_t *osh, uint32 drivestrength) +{ + chipcregs_t *cc; + uint origidx, intr_val = 0; + sdiod_drive_str_t *str_tab = NULL; + uint32 str_mask = 0; + uint32 str_shift = 0; + + if (!(sih->cccaps & CC_CAP_PMU)) { + return; + } + + /* Remember original core before switch to chipc */ + cc = (chipcregs_t *) si_switch_core(sih, CC_CORE_ID, &origidx, &intr_val); + + switch (SDIOD_DRVSTR_KEY(sih->chip, sih->pmurev)) { + case SDIOD_DRVSTR_KEY(BCM4325_CHIP_ID, 1): + str_tab = (sdiod_drive_str_t *)&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): + case SDIOD_DRVSTR_KEY(BCM4315_CHIP_ID, 4): + str_tab = (sdiod_drive_str_t *)&sdiod_drive_strength_tab2; + str_mask = 0x00003800; + str_shift = 11; + break; + case SDIOD_DRVSTR_KEY(BCM4336_CHIP_ID, 8): + case SDIOD_DRVSTR_KEY(BCM4336_CHIP_ID, 11): + if (sih->pmurev == 8) { + str_tab = (sdiod_drive_str_t *)&sdiod_drive_strength_tab3; + } + else if (sih->pmurev == 11) { + str_tab = (sdiod_drive_str_t *)&sdiod_drive_strength_tab4_1v8; + } + str_mask = 0x00003800; + str_shift = 11; + break; + case SDIOD_DRVSTR_KEY(BCM4330_CHIP_ID, 12): + str_tab = (sdiod_drive_str_t *)&sdiod_drive_strength_tab4_1v8; + str_mask = 0x00003800; + str_shift = 11; + break; + case SDIOD_DRVSTR_KEY(BCM43362_CHIP_ID, 13): + str_tab = (sdiod_drive_str_t *)&sdiod_drive_strength_tab5_1v8; + str_mask = 0x00003800; + str_shift = 11; + break; + default: + PMU_MSG(("No SDIO Drive strength init done for chip %s rev %d pmurev %d\n", + bcm_chipname(sih->chip, chn, 8), sih->chiprev, sih->pmurev)); + + break; + } + + if (str_tab != NULL) { + uint32 cc_data_temp; + int i; + + /* Pick the lowest available drive strength equal or greater than the + * requested strength. Drive strength of 0 requests tri-state. + */ + for (i = 0; drivestrength < str_tab[i].strength; i++) + ; + + if (i > 0 && drivestrength > str_tab[i].strength) + i--; + + W_REG(osh, &cc->chipcontrol_addr, 1); + cc_data_temp = R_REG(osh, &cc->chipcontrol_data); + cc_data_temp &= ~str_mask; + cc_data_temp |= str_tab[i].sel << str_shift; + W_REG(osh, &cc->chipcontrol_data, cc_data_temp); + + PMU_MSG(("SDIO: %dmA drive strength requested; set to %dmA\n", + drivestrength, str_tab[i].strength)); + } + + /* Return to original core */ + si_restore_core(sih, origidx, intr_val); +} |