linux-kernel - [PATCH V2 8/9] platform/x86: intel_pmc_core: Add LTR registers for Tiger Lake

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Message-Id: <20210417031252.3020837-9-david.e.box@linux.intel.com>
Date:   Fri, 16 Apr 2021 20:12:51 -0700
From:   "David E. Box" <david.e.box@...ux.intel.com>
To:     irenic.rajneesh@...il.com, david.e.box@...ux.intel.com,
        hdegoede@...hat.com, mgross@...ux.intel.com,
        gayatri.kammela@...el.com
Cc:     platform-driver-x86@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH V2 8/9] platform/x86: intel_pmc_core: Add LTR registers for Tiger Lake

From: Gayatri Kammela <gayatri.kammela@...el.com>

Just like Ice Lake, Tiger Lake uses Cannon Lake's LTR information
and supports a few additional registers. Hence add the LTR registers
specific to Tiger Lake to the cnp_ltr_show_map[].

Also adjust the number of LTR IPs for Tiger Lake to the correct amount.

Signed-off-by: Gayatri Kammela <gayatri.kammela@...el.com>
Signed-off-by: David E. Box <david.e.box@...ux.intel.com>
Reviewed-by: Hans de Goede <hdegoede@...hat.com>
Acked-by: Rajneesh Bhardwaj <irenic.rajneesh@...il.com>
---

V2:	No change

 drivers/platform/x86/intel_pmc_core.c | 2 ++
 drivers/platform/x86/intel_pmc_core.h | 4 +++-
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/platform/x86/intel_pmc_core.c b/drivers/platform/x86/intel_pmc_core.c
index 97cf3384c4c0..786b67171ddc 100644
--- a/drivers/platform/x86/intel_pmc_core.c
+++ b/drivers/platform/x86/intel_pmc_core.c
@@ -383,6 +383,8 @@ static const struct pmc_bit_map cnp_ltr_show_map[] = {
 	 * a list of core SoCs using this.
 	 */
 	{"WIGIG",		ICL_PMC_LTR_WIGIG},
+	{"THC0",                TGL_PMC_LTR_THC0},
+	{"THC1",                TGL_PMC_LTR_THC1},
 	/* Below two cannot be used for LTR_IGNORE */
 	{"CURRENT_PLATFORM",	CNP_PMC_LTR_CUR_PLT},
 	{"AGGREGATED_SYSTEM",	CNP_PMC_LTR_CUR_ASLT},
diff --git a/drivers/platform/x86/intel_pmc_core.h b/drivers/platform/x86/intel_pmc_core.h
index c45805671c4a..e8dae9c6c45f 100644
--- a/drivers/platform/x86/intel_pmc_core.h
+++ b/drivers/platform/x86/intel_pmc_core.h
@@ -191,8 +191,10 @@ enum ppfear_regs {
 #define GET_X2_COUNTER(v)			((v) >> 1)
 #define LPM_STS_LATCH_MODE			BIT(31)
 
-#define TGL_NUM_IP_IGN_ALLOWED			22
 #define TGL_PMC_SLP_S0_RES_COUNTER_STEP		0x7A
+#define TGL_PMC_LTR_THC0			0x1C04
+#define TGL_PMC_LTR_THC1			0x1C08
+#define TGL_NUM_IP_IGN_ALLOWED			23
 #define TGL_PMC_LPM_RES_COUNTER_STEP_X2		61	/* 30.5us * 2 */
 
 /*
-- 
2.25.1