msm: spm-v2: Add API to enable PFM mode on PMIC
When the Kraits are drawing the least power, the Krait buck can be put
in low power mode (PFM) as well.
The msm_spm_enable_fts_lpm() API will allow the PFM mode to be enabled
through the SPM PMIC interface.
Change-Id: Ia5fd16e27e2c90683f6ae93b1e909fa79722a091
Signed-off-by: Praveen Chidambaram <pchidamb@codeaurora.org>
diff --git a/arch/arm/mach-msm/spm_devices.c b/arch/arm/mach-msm/spm_devices.c
index 12a6f08..152e2e9 100644
--- a/arch/arm/mach-msm/spm_devices.c
+++ b/arch/arm/mach-msm/spm_devices.c
@@ -260,10 +260,18 @@
int msm_spm_apcs_set_phase(unsigned int phase_cnt)
{
- return msm_spm_drv_set_phase(&msm_spm_l2_device.reg_data, phase_cnt);
+ return msm_spm_drv_set_pmic_data(&msm_spm_l2_device.reg_data,
+ MSM_SPM_PMIC_PHASE_PORT, phase_cnt);
}
EXPORT_SYMBOL(msm_spm_apcs_set_phase);
+int msm_spm_enable_fts_lpm(uint32_t mode)
+{
+ return msm_spm_drv_set_pmic_data(&msm_spm_l2_device.reg_data,
+ MSM_SPM_PMIC_PFM_PORT, mode);
+}
+EXPORT_SYMBOL(msm_spm_enable_fts_lpm);
+
/* Board file init function */
int __init msm_spm_l2_init(struct msm_spm_platform_data *data)
{
@@ -361,25 +369,6 @@
if (!ret)
spm_data.vctl_timeout_us = val;
- /* optional */
- key = "qcom,vctl-port";
- ret = of_property_read_u32(node, key, &val);
- if (!ret)
- spm_data.vctl_port = val;
-
- /* optional */
- key = "qcom,phase-port";
- ret = of_property_read_u32(node, key, &val);
- if (!ret)
- spm_data.phase_port = val;
-
- for (i = 0; i < ARRAY_SIZE(spm_of_data); i++) {
- ret = of_property_read_u32(node, spm_of_data[i].key, &val);
- if (ret)
- continue;
- spm_data.reg_init_values[spm_of_data[i].id] = val;
- }
-
/*
* Device with id 0..NR_CPUS are SPM for apps cores
* Device with id 0xFFFF is for L2 SPM.
@@ -395,6 +384,35 @@
dev = &msm_spm_l2_device;
}
+ spm_data.vctl_port = -1;
+ spm_data.phase_port = -1;
+ spm_data.pfm_port = -1;
+
+ /* optional */
+ if (dev == &msm_spm_l2_device) {
+ key = "qcom,vctl-port";
+ ret = of_property_read_u32(node, key, &val);
+ if (!ret)
+ spm_data.vctl_port = val;
+
+ key = "qcom,phase-port";
+ ret = of_property_read_u32(node, key, &val);
+ if (!ret)
+ spm_data.phase_port = val;
+
+ key = "qcom,pfm-port";
+ ret = of_property_read_u32(node, key, &val);
+ if (!ret)
+ spm_data.pfm_port = val;
+ }
+
+ for (i = 0; i < ARRAY_SIZE(spm_of_data); i++) {
+ ret = of_property_read_u32(node, spm_of_data[i].key, &val);
+ if (ret)
+ continue;
+ spm_data.reg_init_values[spm_of_data[i].id] = val;
+ }
+
for (i = 0; i < num_modes; i++) {
key = mode_of_data[i].key;
modes[mode_count].cmd =