linux-kernel - [PATCH v1 4/5] platform/x86: Add Tiger Lake(TGL) platform support to intel_pmc

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Date:   Thu, 26 Sep 2019 12:26:02 -0700
From:   Gayatri Kammela <gayatri.kammela@...el.com>
To:     platform-driver-x86@...r.kernel.org
Cc:     vishwanath.somayaji@...el.com, dvhart@...radead.org,
        linux-kernel@...r.kernel.org, charles.d.prestopine@...el.com,
        Gayatri Kammela <gayatri.kammela@...el.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Srinivas Pandruvada <srinivas.pandruvada@...el.com>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Kan Liang <kan.liang@...el.com>,
        "David E . Box" <david.e.box@...el.com>,
        Rajneesh Bhardwaj <rajneesh.bhardwaj@...el.com>,
        Tony Luck <tony.luck@...el.com>
Subject: [PATCH v1 4/5] platform/x86: Add Tiger Lake(TGL) platform support to intel_pmc_core driver

Add Tiger Lake to the list of the platforms that intel_pmc_core driver
supports for the pmc_core device.

Just like ICL, TGL can also reuse all the CNL PCH IPs. Since TGL has
almost the same number of PCH IPs as ICL, reuse ICL's PPFEAR_NUM_ENTRIES
instead of defining a new macro.

Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Srinivas Pandruvada <srinivas.pandruvada@...el.com>
Cc: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Cc: Kan Liang <kan.liang@...el.com>
Cc: David E. Box <david.e.box@...el.com>
Cc: Rajneesh Bhardwaj <rajneesh.bhardwaj@...el.com>
Cc: Tony Luck <tony.luck@...el.com>
Reviewed-by: Tony Luck <tony.luck@...el.com>
Signed-off-by: Gayatri Kammela <gayatri.kammela@...el.com>
---
 drivers/platform/x86/intel_pmc_core.c | 40 +++++++++++++++++++++++++--
 1 file changed, 38 insertions(+), 2 deletions(-)

diff --git a/drivers/platform/x86/intel_pmc_core.c b/drivers/platform/x86/intel_pmc_core.c
index ea43a5989c96..aef8f6d8bddb 100644
--- a/drivers/platform/x86/intel_pmc_core.c
+++ b/drivers/platform/x86/intel_pmc_core.c
@@ -190,7 +190,7 @@ static const struct pmc_bit_map cnp_pfear_map[] = {
 	{"SDX",                 BIT(4)},
 	{"SPE",                 BIT(5)},
 	{"Fuse",                BIT(6)},
-	/* Reserved for Cannonlake but valid for Icelake */
+	/* Reserved for Cannonlake but valid for Icelake and Tigerlake */
 	{"SBR8",		BIT(7)},
 
 	{"CSME_FSC",            BIT(0)},
@@ -234,7 +234,7 @@ static const struct pmc_bit_map cnp_pfear_map[] = {
 	{"HDA_PGD4",            BIT(2)},
 	{"HDA_PGD5",            BIT(3)},
 	{"HDA_PGD6",            BIT(4)},
-	/* Reserved for Cannonlake but valid for Icelake */
+	/* Reserved for Cannonlake but valid for Icelake and Tigerlake */
 	{"PSF6",		BIT(5)},
 	{"PSF7",		BIT(6)},
 	{"PSF8",		BIT(7)},
@@ -265,6 +265,24 @@ static const struct pmc_bit_map *ext_icl_pfear_map[] = {
 	NULL
 };
 
+static const struct pmc_bit_map tgl_pfear_map[] = {
+	/* Tigerlake generation onwards only */
+	{"PSF9",		BIT(0)},
+	{"RES_66",		BIT(1)},
+	{"RES_67",		BIT(2)},
+	{"RES_68",		BIT(3)},
+	{"RES_69",		BIT(4)},
+	{"RES_70",		BIT(5)},
+	{"TBTLSX",		BIT(6)},
+	{}
+};
+
+static const struct pmc_bit_map *ext_tgl_pfear_map[] = {
+	cnp_pfear_map,
+	tgl_pfear_map,
+	NULL
+};
+
 static const struct pmc_bit_map cnp_slps0_dbg0_map[] = {
 	{"AUDIO_D3",		BIT(0)},
 	{"OTG_D3",		BIT(1)},
@@ -383,6 +401,22 @@ static const struct pmc_reg_map icl_reg_map = {
 	.ltr_ignore_max = ICL_NUM_IP_IGN_ALLOWED,
 };
 
+static const struct pmc_reg_map tgl_reg_map = {
+	.pfear_sts = ext_tgl_pfear_map,
+	.slp_s0_offset = CNP_PMC_SLP_S0_RES_COUNTER_OFFSET,
+	.slps0_dbg_maps = cnp_slps0_dbg_maps,
+	.ltr_show_sts = cnp_ltr_show_map,
+	.msr_sts = msr_map,
+	.slps0_dbg_offset = CNP_PMC_SLPS0_DBG_OFFSET,
+	.ltr_ignore_offset = CNP_PMC_LTR_IGNORE_OFFSET,
+	.regmap_length = CNP_PMC_MMIO_REG_LEN,
+	.ppfear0_offset = CNP_PMC_HOST_PPFEAR0A,
+	.ppfear_buckets = ICL_PPFEAR_NUM_ENTRIES,
+	.pm_cfg_offset = CNP_PMC_PM_CFG_OFFSET,
+	.pm_read_disable_bit = CNP_PMC_READ_DISABLE_BIT,
+	.ltr_ignore_max = ICL_NUM_IP_IGN_ALLOWED,
+};
+
 static inline u8 pmc_core_reg_read_byte(struct pmc_dev *pmcdev, int offset)
 {
 	return readb(pmcdev->regbase + offset);
@@ -836,6 +870,8 @@ static const struct x86_cpu_id intel_pmc_core_ids[] = {
 	INTEL_CPU_FAM6(CANNONLAKE_L, cnp_reg_map),
 	INTEL_CPU_FAM6(ICELAKE_L, icl_reg_map),
 	INTEL_CPU_FAM6(ICELAKE_NNPI, icl_reg_map),
+	INTEL_CPU_FAM6(TIGERLAKE_L, tgl_reg_map),
+	INTEL_CPU_FAM6(TIGERLAKE, tgl_reg_map),
 	{}
 };
 
-- 
2.17.1