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authorGábor Stefanik <netrolller.3d@gmail.com>2009-08-26 22:51:26 +0400
committerJohn W. Linville <linville@tuxdriver.com>2009-08-28 22:40:53 +0400
commit06e4da268c0e8f3b8408403d65e47d2885a78ff2 (patch)
tree971fffcefbe06c5bba590953a06ced39947f1198 /drivers/ssb
parent68ec53292c7f09056152efa9a6ee2591c794f08c (diff)
downloadlinux-06e4da268c0e8f3b8408403d65e47d2885a78ff2.tar.xz
ssb: Implement PMU LDO control and use it in b43
Implement the "PMU LDO set voltage" and "PMU LDO PA ref enable" functions, and use them during LP-PHY baseband init in b43. Signed-off-by: Gábor Stefanik <netrolller.3d@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/ssb')
-rw-r--r--drivers/ssb/driver_chipcommon_pmu.c94
1 files changed, 94 insertions, 0 deletions
diff --git a/drivers/ssb/driver_chipcommon_pmu.c b/drivers/ssb/driver_chipcommon_pmu.c
index 4aaddeec55a2..64abd11f6fbb 100644
--- a/drivers/ssb/driver_chipcommon_pmu.c
+++ b/drivers/ssb/driver_chipcommon_pmu.c
@@ -28,6 +28,21 @@ static void ssb_chipco_pll_write(struct ssb_chipcommon *cc,
chipco_write32(cc, SSB_CHIPCO_PLLCTL_DATA, value);
}
+static void ssb_chipco_regctl_maskset(struct ssb_chipcommon *cc,
+ u32 offset, u32 mask, u32 set)
+{
+ u32 value;
+
+ chipco_read32(cc, SSB_CHIPCO_REGCTL_ADDR);
+ chipco_write32(cc, SSB_CHIPCO_REGCTL_ADDR, offset);
+ chipco_read32(cc, SSB_CHIPCO_REGCTL_ADDR);
+ value = chipco_read32(cc, SSB_CHIPCO_REGCTL_DATA);
+ value &= mask;
+ value |= set;
+ chipco_write32(cc, SSB_CHIPCO_REGCTL_DATA, value);
+ chipco_read32(cc, SSB_CHIPCO_REGCTL_DATA);
+}
+
struct pmu0_plltab_entry {
u16 freq; /* Crystal frequency in kHz.*/
u8 xf; /* Crystal frequency value for PMU control */
@@ -506,3 +521,82 @@ void ssb_pmu_init(struct ssb_chipcommon *cc)
ssb_pmu_pll_init(cc);
ssb_pmu_resources_init(cc);
}
+
+void ssb_pmu_set_ldo_voltage(struct ssb_chipcommon *cc,
+ enum ssb_pmu_ldo_volt_id id, u32 voltage)
+{
+ struct ssb_bus *bus = cc->dev->bus;
+ u32 addr, shift, mask;
+
+ switch (bus->chip_id) {
+ case 0x4328:
+ case 0x5354:
+ switch (id) {
+ case LDO_VOLT1:
+ addr = 2;
+ shift = 25;
+ mask = 0xF;
+ break;
+ case LDO_VOLT2:
+ addr = 3;
+ shift = 1;
+ mask = 0xF;
+ break;
+ case LDO_VOLT3:
+ addr = 3;
+ shift = 9;
+ mask = 0xF;
+ break;
+ case LDO_PAREF:
+ addr = 3;
+ shift = 17;
+ mask = 0x3F;
+ break;
+ default:
+ SSB_WARN_ON(1);
+ return;
+ }
+ break;
+ case 0x4312:
+ if (SSB_WARN_ON(id != LDO_PAREF))
+ return;
+ addr = 0;
+ shift = 21;
+ mask = 0x3F;
+ break;
+ default:
+ return;
+ }
+
+ ssb_chipco_regctl_maskset(cc, addr, ~(mask << shift),
+ (voltage & mask) << shift);
+}
+
+void ssb_pmu_set_ldo_paref(struct ssb_chipcommon *cc, bool on)
+{
+ struct ssb_bus *bus = cc->dev->bus;
+ int ldo;
+
+ switch (bus->chip_id) {
+ case 0x4312:
+ ldo = SSB_PMURES_4312_PA_REF_LDO;
+ break;
+ case 0x4328:
+ ldo = SSB_PMURES_4328_PA_REF_LDO;
+ break;
+ case 0x5354:
+ ldo = SSB_PMURES_5354_PA_REF_LDO;
+ break;
+ default:
+ return;
+ }
+
+ if (on)
+ chipco_set32(cc, SSB_CHIPCO_PMU_MINRES_MSK, 1 << ldo);
+ else
+ chipco_mask32(cc, SSB_CHIPCO_PMU_MINRES_MSK, ~(1 << ldo));
+ chipco_read32(cc, SSB_CHIPCO_PMU_MINRES_MSK); //SPEC FIXME found via mmiotrace - dummy read?
+}
+
+EXPORT_SYMBOL(ssb_pmu_set_ldo_voltage);
+EXPORT_SYMBOL(ssb_pmu_set_ldo_paref);