From: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
To: rjw@rjwysocki.net, viresh.kumar@linaro.org
Cc: linux-acpi@vger.kernel.org, linux-pm@vger.kernel.org,
ashwin.chaugule@linaro.org,
Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Subject: [PATCH 2/5] acpi: cpcc: Add integer read support
Date: Wed, 10 Aug 2016 17:17:23 -0700 [thread overview]
Message-ID: <1470874646-70570-3-git-send-email-srinivas.pandruvada@linux.intel.com> (raw)
In-Reply-To: <1470874646-70570-1-git-send-email-srinivas.pandruvada@linux.intel.com>
The _CPC performance limits can also be simple integer not just buffer
with register information. Add support for integer read via cpc_read.
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
---
drivers/acpi/cppc_acpi.c | 21 ++++++++++++++-------
1 file changed, 14 insertions(+), 7 deletions(-)
diff --git a/drivers/acpi/cppc_acpi.c b/drivers/acpi/cppc_acpi.c
index 2e98173..34209f5 100644
--- a/drivers/acpi/cppc_acpi.c
+++ b/drivers/acpi/cppc_acpi.c
@@ -651,11 +651,18 @@ EXPORT_SYMBOL_GPL(acpi_cppc_processor_exit);
* we can directly write to it.
*/
-static int cpc_read(struct cpc_reg *reg, u64 *val)
+static int cpc_read(struct cpc_register_resource *res, u64 *val)
{
+ struct cpc_reg *reg = &res->cpc_entry.reg;
int ret_val = 0;
*val = 0;
+
+ if (res->type == ACPI_TYPE_INTEGER) {
+ *val = res->cpc_entry.int_value;
+ return 0;
+ }
+
if (reg->space_id == ACPI_ADR_SPACE_PLATFORM_COMM) {
void __iomem *vaddr = GET_PCC_VADDR(reg->address);
@@ -754,16 +761,16 @@ int cppc_get_perf_caps(int cpunum, struct cppc_perf_caps *perf_caps)
}
}
- cpc_read(&highest_reg->cpc_entry.reg, &high);
+ cpc_read(highest_reg, &high);
perf_caps->highest_perf = high;
- cpc_read(&lowest_reg->cpc_entry.reg, &low);
+ cpc_read(lowest_reg, &low);
perf_caps->lowest_perf = low;
- cpc_read(&ref_perf->cpc_entry.reg, &ref);
+ cpc_read(ref_perf, &ref);
perf_caps->reference_perf = ref;
- cpc_read(&nom_perf->cpc_entry.reg, &nom);
+ cpc_read(nom_perf, &nom);
perf_caps->nominal_perf = nom;
if (!ref)
@@ -812,8 +819,8 @@ int cppc_get_perf_ctrs(int cpunum, struct cppc_perf_fb_ctrs *perf_fb_ctrs)
}
}
- cpc_read(&delivered_reg->cpc_entry.reg, &delivered);
- cpc_read(&reference_reg->cpc_entry.reg, &reference);
+ cpc_read(delivered_reg, &delivered);
+ cpc_read(reference_reg, &reference);
if (!delivered || !reference) {
ret = -EFAULT;
--
2.7.4
next prev parent reply other threads:[~2016-08-11 0:17 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-08-11 0:17 [PATCH 0/5] x86 CPPC usage Srinivas Pandruvada
2016-08-11 0:17 ` [PATCH 1/5] acpi: cppc: Allow build with ACPI_CPU_FREQ_PSS config Srinivas Pandruvada
2016-08-12 9:13 ` Alexey Klimov
2016-08-12 12:34 ` Srinivas Pandruvada
2016-08-12 16:04 ` Prakash, Prashanth
2016-08-12 16:32 ` Hoan Tran
2016-08-12 16:53 ` Srinivas Pandruvada
2016-08-12 16:35 ` Hoan Tran
2016-08-12 16:52 ` Srinivas Pandruvada
2016-08-12 16:58 ` Hoan Tran
2016-08-12 17:16 ` Srinivas Pandruvada
2016-08-11 0:17 ` Srinivas Pandruvada [this message]
2016-08-11 0:17 ` [PATCH 3/5] acpi: cppc: Add support for function fixed hardware address Srinivas Pandruvada
2016-08-11 0:17 ` [PATCH 4/5] acpi: cppc: Add prefix cppc to cpudata structure name Srinivas Pandruvada
2016-08-11 0:17 ` [PATCH 5/5] acpi: bus: Enable HWP CPPC objects Srinivas Pandruvada
2016-08-16 14:32 ` Alexey Klimov
2016-08-16 16:50 ` Srinivas Pandruvada
2016-08-18 21:14 ` [PATCH 0/5] x86 CPPC usage Srinivas Pandruvada
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