diff options
author | Gayatri Kammela <gayatri.kammela@linux.intel.com> | 2022-11-14 21:32:57 +0300 |
---|---|---|
committer | Hans de Goede <hdegoede@redhat.com> | 2022-11-21 12:42:52 +0300 |
commit | c5ad454a12c6a6d08dd67c971a0b12adc9953304 (patch) | |
tree | 565fe294e2cab2bff297d3149a6b4b9544eb6d3b /drivers/platform/x86/intel/pmc | |
parent | 08876884b9eac0666a510ef4f7e7a7c2d377aae5 (diff) | |
download | linux-c5ad454a12c6a6d08dd67c971a0b12adc9953304.tar.xz |
platform/x86: intel/pmc/core: Add Meteor Lake support to pmc core driver
Add Meteor Lake client and mobile support to pmc core driver. This patch
adds legacy support.
Cc: David E Box <david.e.box@linux.intel.com>
Suggested-by: David E Box <david.e.box@linux.intel.com>
Reviewed-by: "David E. Box" <david.e.box@linux.intel.com>
Signed-off-by: Sukumar Ghorai <sukumar.ghorai@intel.com>
Signed-off-by: Gayatri Kammela <gayatri.kammela@linux.intel.com>
Signed-off-by: "David E. Box" <david.e.box@linux.intel.com>
Link: https://lore.kernel.org/r/20221114183257.2067662-9-gayatri.kammela@linux.intel.com
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Diffstat (limited to 'drivers/platform/x86/intel/pmc')
-rw-r--r-- | drivers/platform/x86/intel/pmc/Makefile | 2 | ||||
-rw-r--r-- | drivers/platform/x86/intel/pmc/core.c | 7 | ||||
-rw-r--r-- | drivers/platform/x86/intel/pmc/core.h | 13 | ||||
-rw-r--r-- | drivers/platform/x86/intel/pmc/mtl.c | 52 |
4 files changed, 72 insertions, 2 deletions
diff --git a/drivers/platform/x86/intel/pmc/Makefile b/drivers/platform/x86/intel/pmc/Makefile index 0135918ea718..f96bc2e19503 100644 --- a/drivers/platform/x86/intel/pmc/Makefile +++ b/drivers/platform/x86/intel/pmc/Makefile @@ -4,7 +4,7 @@ # intel_pmc_core-y := core.o spt.o cnp.o icl.o tgl.o \ - adl.o + adl.o mtl.o obj-$(CONFIG_INTEL_PMC_CORE) += intel_pmc_core.o intel_pmc_core_pltdrv-y := pltdrv.o obj-$(CONFIG_INTEL_PMC_CORE) += intel_pmc_core_pltdrv.o diff --git a/drivers/platform/x86/intel/pmc/core.c b/drivers/platform/x86/intel/pmc/core.c index 14dfeac73521..f1d802f6ec3f 100644 --- a/drivers/platform/x86/intel/pmc/core.c +++ b/drivers/platform/x86/intel/pmc/core.c @@ -901,7 +901,11 @@ static void pmc_core_get_low_power_modes(struct platform_device *pdev) return; lpm_en = pmc_core_reg_read(pmcdev, pmcdev->map->lpm_en_offset); - pmcdev->num_lpm_modes = hweight32(lpm_en); + /* For MTL, BIT 31 is not an lpm mode but a enable bit. + * Lower byte is enough to cover the number of lpm modes for all + * platforms and hence mask the upper 3 bytes. + */ + pmcdev->num_lpm_modes = hweight32(lpm_en & 0xFF); /* Read 32 bit LPM_PRI register */ lpm_pri = pmc_core_reg_read(pmcdev, pmcdev->map->lpm_priority_offset); @@ -1024,6 +1028,7 @@ static const struct x86_cpu_id intel_pmc_core_ids[] = { X86_MATCH_INTEL_FAM6_MODEL(RAPTORLAKE_P, tgl_core_init), X86_MATCH_INTEL_FAM6_MODEL(RAPTORLAKE, adl_core_init), X86_MATCH_INTEL_FAM6_MODEL(RAPTORLAKE_S, adl_core_init), + X86_MATCH_INTEL_FAM6_MODEL(METEORLAKE, mtl_core_init), {} }; diff --git a/drivers/platform/x86/intel/pmc/core.h b/drivers/platform/x86/intel/pmc/core.h index 129c0c98f1a6..810204d758ab 100644 --- a/drivers/platform/x86/intel/pmc/core.h +++ b/drivers/platform/x86/intel/pmc/core.h @@ -238,6 +238,16 @@ enum ppfear_regs { #define ADL_LPM_STATUS_LATCH_EN_OFFSET 0x1704 #define ADL_LPM_LIVE_STATUS_OFFSET 0x1764 +/* Meteor Lake Power Management Controller register offsets */ +#define MTL_LPM_EN_OFFSET 0x1798 +#define MTL_LPM_RESIDENCY_OFFSET 0x17A0 + +/* Meteor Lake Low Power Mode debug registers */ +#define MTL_LPM_PRI_OFFSET 0x179C +#define MTL_LPM_STATUS_LATCH_EN_OFFSET 0x16F8 +#define MTL_LPM_STATUS_OFFSET 0x1700 +#define MTL_LPM_LIVE_STATUS_OFFSET 0x175C + extern const char *pmc_lpm_modes[]; struct pmc_bit_map { @@ -383,6 +393,7 @@ extern const struct pmc_bit_map adl_vnn_req_status_3_map[]; extern const struct pmc_bit_map adl_vnn_misc_status_map[]; extern const struct pmc_bit_map *adl_lpm_maps[]; extern const struct pmc_reg_map adl_reg_map; +extern const struct pmc_reg_map mtl_reg_map; extern void pmc_core_get_tgl_lpm_reqs(struct platform_device *pdev); extern int pmc_core_send_ltr_ignore(struct pmc_dev *pmcdev, u32 value); @@ -392,8 +403,10 @@ void cnp_core_init(struct pmc_dev *pmcdev); void icl_core_init(struct pmc_dev *pmcdev); void tgl_core_init(struct pmc_dev *pmcdev); void adl_core_init(struct pmc_dev *pmcdev); +void mtl_core_init(struct pmc_dev *pmcdev); void tgl_core_configure(struct pmc_dev *pmcdev); void adl_core_configure(struct pmc_dev *pmcdev); +void mtl_core_configure(struct pmc_dev *pmcdev); #define pmc_for_each_mode(i, mode, pmcdev) \ for (i = 0, mode = pmcdev->lpm_en_modes[i]; \ diff --git a/drivers/platform/x86/intel/pmc/mtl.c b/drivers/platform/x86/intel/pmc/mtl.c new file mode 100644 index 000000000000..eeb3bd8c2502 --- /dev/null +++ b/drivers/platform/x86/intel/pmc/mtl.c @@ -0,0 +1,52 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * This file contains platform specific structure definitions + * and init function used by Meteor Lake PCH. + * + * Copyright (c) 2022, Intel Corporation. + * All Rights Reserved. + * + */ + +#include "core.h" + +const struct pmc_reg_map mtl_reg_map = { + .pfear_sts = ext_tgl_pfear_map, + .slp_s0_offset = CNP_PMC_SLP_S0_RES_COUNTER_OFFSET, + .slp_s0_res_counter_step = TGL_PMC_SLP_S0_RES_COUNTER_STEP, + .ltr_show_sts = adl_ltr_show_map, + .msr_sts = msr_map, + .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 = ADL_NUM_IP_IGN_ALLOWED, + .lpm_num_modes = ADL_LPM_NUM_MODES, + .lpm_num_maps = ADL_LPM_NUM_MAPS, + .lpm_res_counter_step_x2 = TGL_PMC_LPM_RES_COUNTER_STEP_X2, + .etr3_offset = ETR3_OFFSET, + .lpm_sts_latch_en_offset = MTL_LPM_STATUS_LATCH_EN_OFFSET, + .lpm_priority_offset = MTL_LPM_PRI_OFFSET, + .lpm_en_offset = MTL_LPM_EN_OFFSET, + .lpm_residency_offset = MTL_LPM_RESIDENCY_OFFSET, + .lpm_sts = adl_lpm_maps, + .lpm_status_offset = MTL_LPM_STATUS_OFFSET, + .lpm_live_status_offset = MTL_LPM_LIVE_STATUS_OFFSET, +}; + +void mtl_core_configure(struct pmc_dev *pmcdev) +{ + /* Due to a hardware limitation, the GBE LTR blocks PC10 + * when a cable is attached. Tell the PMC to ignore it. + */ + dev_dbg(&pmcdev->pdev->dev, "ignoring GBE LTR\n"); + pmc_core_send_ltr_ignore(pmcdev, 3); +} + +void mtl_core_init(struct pmc_dev *pmcdev) +{ + pmcdev->map = &mtl_reg_map; + pmcdev->core_configure = mtl_core_configure; +} |