diff options
| author | Mattias Nilsson <mattias.i.nilsson@stericsson.com> | 2012-01-13 16:20:10 +0100 |
|---|---|---|
| committer | Samuel Ortiz <sameo@linux.intel.com> | 2012-03-06 18:46:31 +0100 |
| commit | b58d12fe6ccd16030e1a69b5c443075f7bed0f6d (patch) | |
| tree | 13d9d0047374df218c92ed9f6080c20f1410f321 /drivers/mfd | |
| parent | c72fe851df21603cd149320df49064eb2f903707 (diff) | |
mfd: Function for obtaining the db8500 prcmu firmware version
This patch exports a function that can be used to tell which
version of the DB8500 PRCMU firmware is available, and revamps the
firmware detection code a bit.
Reviewed-by: Bengt Jonsson <bengt.g.jonsson@stericsson.com>
Reviewed-by: Jonas Aberg <jonas.aberg@stericsson.com>
Signed-off-by: Mattias Nilsson <mattias.i.nilsson@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Diffstat (limited to 'drivers/mfd')
| -rw-r--r-- | drivers/mfd/db8500-prcmu.c | 51 |
1 files changed, 33 insertions, 18 deletions
diff --git a/drivers/mfd/db8500-prcmu.c b/drivers/mfd/db8500-prcmu.c index b9119636850..12519935da6 100644 --- a/drivers/mfd/db8500-prcmu.c +++ b/drivers/mfd/db8500-prcmu.c @@ -39,11 +39,6 @@ /* Offset for the firmware version within the TCPM */ #define PRCMU_FW_VERSION_OFFSET 0xA4 -/* PRCMU project numbers, defined by PRCMU FW */ -#define PRCMU_PROJECT_ID_8500V1_0 1 -#define PRCMU_PROJECT_ID_8500V2_0 2 -#define PRCMU_PROJECT_ID_8400V2_0 3 - /* Index of different voltages to be used when accessing AVSData */ #define PRCM_AVS_BASE 0x2FC #define PRCM_AVS_VBB_RET (PRCM_AVS_BASE + 0x0) @@ -266,6 +261,11 @@ #define WAKEUP_BIT_GPIO7 BIT(30) #define WAKEUP_BIT_GPIO8 BIT(31) +static struct { + bool valid; + struct prcmu_fw_version version; +} fw_info; + /* * This vector maps irq numbers to the bits in the bit field used in * communication with the PRCMU firmware. @@ -522,14 +522,6 @@ static const char *hwacc_ret_regulator_name[NUM_HW_ACC] = { #define PRCMU_PLLDSI_LOCKP_LOCKED 0x3 -static struct { - u8 project_number; - u8 api_version; - u8 func_version; - u8 errata; -} prcmu_version; - - int db8500_prcmu_enable_dsipll(void) { int i; @@ -619,6 +611,11 @@ void prcmu_disable_spi2(void) spin_unlock_irqrestore(&gpiocr_lock, flags); } +struct prcmu_fw_version *prcmu_get_fw_version(void) +{ + return fw_info.valid ? &fw_info.version : NULL; +} + bool prcmu_has_arm_maxopp(void) { return (readb(tcdm_base + PRCM_AVS_VARM_MAX_OPP) & @@ -2077,6 +2074,22 @@ static struct irq_chip prcmu_irq_chip = { .irq_unmask = prcmu_irq_unmask, }; +static char *fw_project_name(u8 project) +{ + switch (project) { + case PRCMU_FW_PROJECT_U8500: + return "U8500"; + case PRCMU_FW_PROJECT_U8500_C2: + return "U8500 C2"; + case PRCMU_FW_PROJECT_U9500: + return "U9500"; + case PRCMU_FW_PROJECT_U9500_C2: + return "U9500 C2"; + default: + return "Unknown"; + } +} + void __init db8500_prcmu_early_init(void) { unsigned int i; @@ -2086,11 +2099,13 @@ void __init db8500_prcmu_early_init(void) if (tcpm_base != NULL) { u32 version; version = readl(tcpm_base + PRCMU_FW_VERSION_OFFSET); - prcmu_version.project_number = version & 0xFF; - prcmu_version.api_version = (version >> 8) & 0xFF; - prcmu_version.func_version = (version >> 16) & 0xFF; - prcmu_version.errata = (version >> 24) & 0xFF; - pr_info("PRCMU firmware version %d.%d.%d\n", + fw_info.version.project = version & 0xFF; + fw_info.version.api_version = (version >> 8) & 0xFF; + fw_info.version.func_version = (version >> 16) & 0xFF; + fw_info.version.errata = (version >> 24) & 0xFF; + fw_info.valid = true; + pr_info("PRCMU firmware: %s, version %d.%d.%d\n", + fw_project_name(fw_info.version.project), (version >> 8) & 0xFF, (version >> 16) & 0xFF, (version >> 24) & 0xFF); iounmap(tcpm_base); |