platform/x86: intel_pmc_core: Add ICL platform support

Icelake can resue most of the CNL PCH IPs as they are mostly similar.
This patch enables the PMC Core driver for ICL family.

It also addresses few other minor issues like upper case conversions and
some tab alignments.

Cc: "David E. Box" <david.e.box@intel.com>
Cc: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Acked-and-tested-by: Anshuman Gupta <anshuman.gupta@intel.com>
Signed-off-by: Rajneesh Bhardwaj <rajneesh.bhardwaj@linux.intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>

drivers/platform/x86/intel_pmc_core.c

@@ -166,25 +166,26 @@ static const struct pmc_bit_map cnp_pfear_map[] = {
 	{"SDX",                 BIT(4)},
 	{"SPE",                 BIT(5)},
 	{"Fuse",                BIT(6)},
-	{"Res_23",              BIT(7)},
+	/* Reserved for Cannonlake but valid for Icelake */
+	{"SBR8",		BIT(7)},
 
 	{"CSME_FSC",            BIT(0)},
 	{"USB3_OTG",            BIT(1)},
 	{"EXI",                 BIT(2)},
 	{"CSE",                 BIT(3)},
-	{"csme_kvm",            BIT(4)},
-	{"csme_pmt",            BIT(5)},
-	{"csme_clink",          BIT(6)},
-	{"csme_ptio",           BIT(7)},
-
-	{"csme_usbr",           BIT(0)},
-	{"csme_susram",         BIT(1)},
-	{"csme_smt1",           BIT(2)},
+	{"CSME_KVM",            BIT(4)},
+	{"CSME_PMT",            BIT(5)},
+	{"CSME_CLINK",          BIT(6)},
+	{"CSME_PTIO",           BIT(7)},
+
+	{"CSME_USBR",           BIT(0)},
+	{"CSME_SUSRAM",         BIT(1)},
+	{"CSME_SMT1",           BIT(2)},
 	{"CSME_SMT4",           BIT(3)},
-	{"csme_sms2",           BIT(4)},
-	{"csme_sms1",           BIT(5)},
-	{"csme_rtc",            BIT(6)},
-	{"csme_psf",            BIT(7)},
+	{"CSME_SMS2",           BIT(4)},
+	{"CSME_SMS1",           BIT(5)},
+	{"CSME_RTC",            BIT(6)},
+	{"CSME_PSF",            BIT(7)},
 
 	{"SBR0",                BIT(0)},
 	{"SBR1",                BIT(1)},
@@ -209,6 +210,20 @@ 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 */
+	{"PSF6",		BIT(5)},
+	{"PSF7",		BIT(6)},
+	{"PSF8",		BIT(7)},
+
+	/* Icelake generation onwards only */
+	{"RES_65",		BIT(0)},
+	{"RES_66",		BIT(1)},
+	{"RES_67",		BIT(2)},
+	{"TAM",			BIT(3)},
+	{"GBETSN",		BIT(4)},
+	{"TBTLSX",		BIT(5)},
+	{"RES_71",		BIT(6)},
+	{"RES_72",		BIT(7)},
 	{}
 };
 
@@ -290,6 +305,8 @@ static const struct pmc_bit_map cnp_ltr_show_map[] = {
 	{"ISH",			CNP_PMC_LTR_ISH},
 	{"UFSX2",		CNP_PMC_LTR_UFSX2},
 	{"EMMC",		CNP_PMC_LTR_EMMC},
+	/* Reserved for Cannonlake but valid for Icelake */
+	{"WIGIG",		ICL_PMC_LTR_WIGIG},
 	/* Below two cannot be used for LTR_IGNORE */
 	{"CURRENT_PLATFORM",	CNP_PMC_LTR_CUR_PLT},
 	{"AGGREGATED_SYSTEM",	CNP_PMC_LTR_CUR_ASLT},
@@ -311,6 +328,21 @@ static const struct pmc_reg_map cnp_reg_map = {
 	.ltr_ignore_max = CNP_NUM_IP_IGN_ALLOWED,
 };
 
+static const struct pmc_reg_map icl_reg_map = {
+	.pfear_sts = cnp_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,
+	.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);
@@ -740,6 +772,7 @@ static const struct x86_cpu_id intel_pmc_core_ids[] = {
 	INTEL_CPU_FAM6(KABYLAKE_MOBILE, spt_reg_map),
 	INTEL_CPU_FAM6(KABYLAKE_DESKTOP, spt_reg_map),
 	INTEL_CPU_FAM6(CANNONLAKE_MOBILE, cnp_reg_map),
+	INTEL_CPU_FAM6(ICELAKE_MOBILE, icl_reg_map),
 	{}
 };
 

drivers/platform/x86/intel_pmc_core.h

@@ -178,6 +178,10 @@ enum ppfear_regs {
 #define LTR_REQ_SNOOP				BIT(15)
 #define LTR_REQ_NONSNOOP			BIT(31)
 
+#define ICL_PPFEAR_NUM_ENTRIES			9
+#define ICL_NUM_IP_IGN_ALLOWED			20
+#define ICL_PMC_LTR_WIGIG			0x1BFC
+
 struct pmc_bit_map {
 	const char *name;
 	u32 bit_mask;