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Message-Id: <20221114183257.2067662-2-gayatri.kammela@linux.intel.com>
Date: Mon, 14 Nov 2022 10:32:50 -0800
From: Gayatri Kammela <gayatri.kammela@...ux.intel.com>
To: hdegoede@...hat.com
Cc: irenic.rajneesh@...il.com, markgross@...nel.org,
linux-kernel@...r.kernel.org, platform-driver-x86@...r.kernel.org,
sukumar.ghorai@...el.com, xi.pardee@...el.com,
rajvi.jingar@...el.com,
Gayatri Kammela <gayatri.kammela@...ux.intel.com>,
David E Box <david.e.box@...ux.intel.com>
Subject: [PATCH v1 1/8] platform/x86: intel/pmc: Replace all the reg_map with init functions
The current implementation of pmc core driver has the reg_map assigned
to the CPUID of each platform. Replace the reg_map with init functions
that are defined for each platform.
This is a preparatory patch for redesigning the pmc core driver.
Cc: David E Box <david.e.box@...ux.intel.com>
Reviewed-by: "David E. Box" <david.e.box@...ux.intel.com>
Signed-off-by: Gayatri Kammela <gayatri.kammela@...ux.intel.com>
Signed-off-by: "David E. Box" <david.e.box@...ux.intel.com>
---
drivers/platform/x86/intel/pmc/core.c | 114 +++++++++++++++++---------
drivers/platform/x86/intel/pmc/core.h | 13 +++
2 files changed, 90 insertions(+), 37 deletions(-)
diff --git a/drivers/platform/x86/intel/pmc/core.c b/drivers/platform/x86/intel/pmc/core.c
index 17ec5825d13d..b434cf5b094b 100644
--- a/drivers/platform/x86/intel/pmc/core.c
+++ b/drivers/platform/x86/intel/pmc/core.c
@@ -19,7 +19,6 @@
#include <linux/io.h>
#include <linux/module.h>
#include <linux/pci.h>
-#include <linux/platform_device.h>
#include <linux/slab.h>
#include <linux/suspend.h>
#include <linux/uaccess.h>
@@ -1895,27 +1894,73 @@ static void pmc_core_dbgfs_register(struct pmc_dev *pmcdev)
}
}
+void spt_core_init(struct pmc_dev *pmcdev)
+{
+ pmcdev->map = &spt_reg_map;
+}
+
+void cnp_core_init(struct pmc_dev *pmcdev)
+{
+ pmcdev->map = &cnp_reg_map;
+}
+
+void icl_core_init(struct pmc_dev *pmcdev)
+{
+ pmcdev->map = &icl_reg_map;
+}
+
+void tgl_core_configure(struct pmc_dev *pmcdev)
+{
+ pmc_core_get_tgl_lpm_reqs(pmcdev->pdev);
+ /* 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 tgl_core_init(struct pmc_dev *pmcdev)
+{
+ pmcdev->map = &tgl_reg_map;
+ pmcdev->core_configure = tgl_core_configure;
+}
+
+void adl_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 adl_core_init(struct pmc_dev *pmcdev)
+{
+ pmcdev->map = &adl_reg_map;
+ pmcdev->core_configure = adl_core_configure;
+}
+
static const struct x86_cpu_id intel_pmc_core_ids[] = {
- X86_MATCH_INTEL_FAM6_MODEL(SKYLAKE_L, &spt_reg_map),
- X86_MATCH_INTEL_FAM6_MODEL(SKYLAKE, &spt_reg_map),
- X86_MATCH_INTEL_FAM6_MODEL(KABYLAKE_L, &spt_reg_map),
- X86_MATCH_INTEL_FAM6_MODEL(KABYLAKE, &spt_reg_map),
- X86_MATCH_INTEL_FAM6_MODEL(CANNONLAKE_L, &cnp_reg_map),
- X86_MATCH_INTEL_FAM6_MODEL(ICELAKE_L, &icl_reg_map),
- X86_MATCH_INTEL_FAM6_MODEL(ICELAKE_NNPI, &icl_reg_map),
- X86_MATCH_INTEL_FAM6_MODEL(COMETLAKE, &cnp_reg_map),
- X86_MATCH_INTEL_FAM6_MODEL(COMETLAKE_L, &cnp_reg_map),
- X86_MATCH_INTEL_FAM6_MODEL(TIGERLAKE_L, &tgl_reg_map),
- X86_MATCH_INTEL_FAM6_MODEL(TIGERLAKE, &tgl_reg_map),
- X86_MATCH_INTEL_FAM6_MODEL(ATOM_TREMONT, &tgl_reg_map),
- X86_MATCH_INTEL_FAM6_MODEL(ATOM_TREMONT_L, &icl_reg_map),
- X86_MATCH_INTEL_FAM6_MODEL(ROCKETLAKE, &tgl_reg_map),
- X86_MATCH_INTEL_FAM6_MODEL(ALDERLAKE_L, &tgl_reg_map),
- X86_MATCH_INTEL_FAM6_MODEL(ALDERLAKE_N, &tgl_reg_map),
- X86_MATCH_INTEL_FAM6_MODEL(ALDERLAKE, &adl_reg_map),
- X86_MATCH_INTEL_FAM6_MODEL(RAPTORLAKE_P, &tgl_reg_map),
- X86_MATCH_INTEL_FAM6_MODEL(RAPTORLAKE, &adl_reg_map),
- X86_MATCH_INTEL_FAM6_MODEL(RAPTORLAKE_S, &adl_reg_map),
+ X86_MATCH_INTEL_FAM6_MODEL(SKYLAKE_L, spt_core_init),
+ X86_MATCH_INTEL_FAM6_MODEL(SKYLAKE, spt_core_init),
+ X86_MATCH_INTEL_FAM6_MODEL(KABYLAKE_L, spt_core_init),
+ X86_MATCH_INTEL_FAM6_MODEL(KABYLAKE, spt_core_init),
+ X86_MATCH_INTEL_FAM6_MODEL(CANNONLAKE_L, cnp_core_init),
+ X86_MATCH_INTEL_FAM6_MODEL(ICELAKE_L, icl_core_init),
+ X86_MATCH_INTEL_FAM6_MODEL(ICELAKE_NNPI, icl_core_init),
+ X86_MATCH_INTEL_FAM6_MODEL(COMETLAKE, cnp_core_init),
+ X86_MATCH_INTEL_FAM6_MODEL(COMETLAKE_L, cnp_core_init),
+ X86_MATCH_INTEL_FAM6_MODEL(TIGERLAKE_L, tgl_core_init),
+ X86_MATCH_INTEL_FAM6_MODEL(TIGERLAKE, tgl_core_init),
+ X86_MATCH_INTEL_FAM6_MODEL(ATOM_TREMONT, tgl_core_init),
+ X86_MATCH_INTEL_FAM6_MODEL(ATOM_TREMONT_L, icl_core_init),
+ X86_MATCH_INTEL_FAM6_MODEL(ROCKETLAKE, tgl_core_init),
+ X86_MATCH_INTEL_FAM6_MODEL(ALDERLAKE_L, tgl_core_init),
+ X86_MATCH_INTEL_FAM6_MODEL(ALDERLAKE_N, tgl_core_init),
+ X86_MATCH_INTEL_FAM6_MODEL(ALDERLAKE, adl_core_init),
+ 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),
{}
};
@@ -1975,6 +2020,7 @@ static int pmc_core_probe(struct platform_device *pdev)
static bool device_initialized;
struct pmc_dev *pmcdev;
const struct x86_cpu_id *cpu_id;
+ void (*core_init)(struct pmc_dev *pmcdev);
u64 slp_s0_addr;
if (device_initialized)
@@ -1985,20 +2031,25 @@ static int pmc_core_probe(struct platform_device *pdev)
return -ENOMEM;
platform_set_drvdata(pdev, pmcdev);
+ pmcdev->pdev = pdev;
cpu_id = x86_match_cpu(intel_pmc_core_ids);
if (!cpu_id)
return -ENODEV;
- pmcdev->map = (struct pmc_reg_map *)cpu_id->driver_data;
+ core_init = (void (*)(struct pmc_dev *))cpu_id->driver_data;
/*
* Coffee Lake has CPU ID of Kaby Lake and Cannon Lake PCH. So here
* Sunrisepoint PCH regmap can't be used. Use Cannon Lake PCH regmap
* in this case.
*/
- if (pmcdev->map == &spt_reg_map && !pci_dev_present(pmc_pci_ids))
- pmcdev->map = &cnp_reg_map;
+ if (core_init == spt_core_init && !pci_dev_present(pmc_pci_ids))
+ core_init = cnp_core_init;
+
+ mutex_init(&pmcdev->lock);
+ core_init(pmcdev);
+
if (lpit_read_residency_count_address(&slp_s0_addr)) {
pmcdev->base_addr = PMC_BASE_ADDR_DEFAULT;
@@ -2014,24 +2065,13 @@ static int pmc_core_probe(struct platform_device *pdev)
if (!pmcdev->regbase)
return -ENOMEM;
- mutex_init(&pmcdev->lock);
+ if (pmcdev->core_configure)
+ pmcdev->core_configure(pmcdev);
pmcdev->pmc_xram_read_bit = pmc_core_check_read_lock_bit(pmcdev);
pmc_core_get_low_power_modes(pdev);
pmc_core_do_dmi_quirks(pmcdev);
- if (pmcdev->map == &tgl_reg_map)
- pmc_core_get_tgl_lpm_reqs(pdev);
-
- /*
- * On TGL and ADL, due to a hardware limitation, the GBE LTR blocks PC10
- * when a cable is attached. Tell the PMC to ignore it.
- */
- if (pmcdev->map == &tgl_reg_map || pmcdev->map == &adl_reg_map) {
- dev_dbg(&pdev->dev, "ignoring GBE LTR\n");
- pmc_core_send_ltr_ignore(pmcdev, 3);
- }
-
pmc_core_dbgfs_register(pmcdev);
device_initialized = true;
diff --git a/drivers/platform/x86/intel/pmc/core.h b/drivers/platform/x86/intel/pmc/core.h
index 4c7e77f1ccac..e64b33e46397 100644
--- a/drivers/platform/x86/intel/pmc/core.h
+++ b/drivers/platform/x86/intel/pmc/core.h
@@ -13,6 +13,7 @@
#define PMC_CORE_H
#include <linux/bits.h>
+#include <linux/platform_device.h>
#define PMC_BASE_ADDR_DEFAULT 0xFE000000
@@ -312,6 +313,7 @@ struct pmc_reg_map {
* @regbase: pointer to io-remapped memory location
* @map: pointer to pmc_reg_map struct that contains platform
* specific attributes
+ * @pdev: pointer to platform_device struct
* @dbgfs_dir: path to debugfs interface
* @pmc_xram_read_bit: flag to indicate whether PMC XRAM shadow registers
* used to read MPHY PG and PLL status are available
@@ -322,6 +324,7 @@ struct pmc_reg_map {
* @num_lpm_modes: Count of enabled modes
* @lpm_en_modes: Array of enabled modes from lowest to highest priority
* @lpm_req_regs: List of substate requirements
+ * @core_configure: Function pointer to configure the platform
*
* pmc_dev contains info about power management controller device.
*/
@@ -330,6 +333,7 @@ struct pmc_dev {
void __iomem *regbase;
const struct pmc_reg_map *map;
struct dentry *dbgfs_dir;
+ struct platform_device *pdev;
int pmc_xram_read_bit;
struct mutex lock; /* generic mutex lock for PMC Core */
@@ -339,8 +343,17 @@ struct pmc_dev {
int num_lpm_modes;
int lpm_en_modes[LPM_MAX_NUM_MODES];
u32 *lpm_req_regs;
+ void (*core_configure)(struct pmc_dev *pmcdev);
};
+void spt_core_init(struct pmc_dev *pmcdev);
+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 tgl_core_configure(struct pmc_dev *pmcdev);
+void adl_core_configure(struct pmc_dev *pmcdev);
+
#define pmc_for_each_mode(i, mode, pmcdev) \
for (i = 0, mode = pmcdev->lpm_en_modes[i]; \
i < pmcdev->num_lpm_modes; \
--
2.34.1
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