mirrors/linux
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git synced 2025-12-28 06:44:36 -05:00
Code Issues Packages Projects Releases Wiki Activity

ACPI: CPPC: Extract cppc_get_reg_val_in_pcc()

Browse Source 
Extract the operations if register is in pcc out from cppc_get_reg_val()
as cppc_get_reg_val_in_pcc().

Reviewed-by: Pierre Gondois <pierre.gondois@arm.com>
Signed-off-by: Lifeng Zheng <zhenglifeng1@huawei.com>
Reviewed-by: Mario Limonciello <mario.limonciello@amd.com>
Link: https://patch.msgid.link/20250411093855.982491-5-zhenglifeng1@huawei.com
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Lifeng Zheng
2025-04-11 17:38:51 +08:00
committed by Rafael J. Wysocki
parent 714d103ce8
commit b5ef45e6a1
1 changed files with 27 additions and 23 deletions
Download Patch File Download Diff File Expand all files Collapse all files

50
drivers/acpi/cppc_acpi.c
View File

@@ -1179,6 +1179,31 @@ static int cpc_write(int cpu, struct cpc_register_resource *reg_res, u64 val)
return ret_val;
}
static int cppc_get_reg_val_in_pcc(int cpu, struct cpc_register_resource *reg, u64 *val)
{
int pcc_ss_id = per_cpu(cpu_pcc_subspace_idx, cpu);
struct cppc_pcc_data *pcc_ss_data = NULL;
int ret;
if (pcc_ss_id < 0) {
pr_debug("Invalid pcc_ss_id\n");
return -ENODEV;
}
pcc_ss_data = pcc_data[pcc_ss_id];
down_write(&pcc_ss_data->pcc_lock);
if (send_pcc_cmd(pcc_ss_id, CMD_READ) >= 0)
ret = cpc_read(cpu, reg, val);
else
ret = -EIO;
up_write(&pcc_ss_data->pcc_lock);
return ret;
}
static int cppc_get_reg_val(int cpu, enum cppc_regs reg_idx, u64 *val)
{
struct cpc_desc *cpc_desc = per_cpu(cpc_desc_ptr, cpu);
@@ -1201,29 +1226,8 @@ static int cppc_get_reg_val(int cpu, enum cppc_regs reg_idx, u64 *val)
return -EOPNOTSUPP;
}
if (CPC_IN_PCC(reg)) {
int pcc_ss_id = per_cpu(cpu_pcc_subspace_idx, cpu);
struct cppc_pcc_data *pcc_ss_data = NULL;
int ret;
if (pcc_ss_id < 0) {
pr_debug("Invalid pcc_ss_id\n");
return -ENODEV;
}
pcc_ss_data = pcc_data[pcc_ss_id];
down_write(&pcc_ss_data->pcc_lock);
if (send_pcc_cmd(pcc_ss_id, CMD_READ) >= 0)
ret = cpc_read(cpu, reg, val);
else
ret = -EIO;
up_write(&pcc_ss_data->pcc_lock);
return ret;
}
if (CPC_IN_PCC(reg))
return cppc_get_reg_val_in_pcc(cpu, reg, val);
return cpc_read(cpu, reg, val);
}