linux-kernel - [PATCH 4.19 82/99] platform/x86: intel_pmc

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Message-Id: <20190506143101.471445067@linuxfoundation.org>
Date:   Mon,  6 May 2019 16:32:55 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, "David E. Box" <david.e.box@...el.com>,
        Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>,
        "David E. Box" <david.e.box@...ux.intel.com>,
        Rajneesh Bhardwaj <rajneesh.bhardwaj@...ux.intel.com>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Subject: [PATCH 4.19 82/99] platform/x86: intel_pmc_core: Handle CFL regmap properly

From: Rajneesh Bhardwaj <rajneesh.bhardwaj@...ux.intel.com>

commit e50af8332785355de3cb40d9f5e8c45dbfc86f53 upstream.

Only Coffeelake should use Cannonlake regmap other than Cannonlake
platform. This allows Coffeelake special handling only when there is no
matching PCI device and default reg map selected as per CPUID is for
Sunrisepoint PCH. This change is needed to enable support for newer SoCs
such as Icelake.

Cc: "David E. Box" <david.e.box@...el.com>
Cc: Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>
Fixes: 661405bd817b ("platform/x86: intel_pmc_core: Special case for Coffeelake")
Acked-by: "David E. Box" <david.e.box@...ux.intel.com>
Signed-off-by: Rajneesh Bhardwaj <rajneesh.bhardwaj@...ux.intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/platform/x86/intel_pmc_core.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/platform/x86/intel_pmc_core.c
+++ b/drivers/platform/x86/intel_pmc_core.c
@@ -682,7 +682,7 @@ static int __init pmc_core_probe(void)
 	 * Sunrisepoint PCH regmap can't be used. Use Cannonlake PCH regmap
 	 * in this case.
 	 */
-	if (!pci_dev_present(pmc_pci_ids))
+	if (pmcdev->map == &spt_reg_map && !pci_dev_present(pmc_pci_ids))
 		pmcdev->map = &cnp_reg_map;

 	if (lpit_read_residency_count_address(&slp_s0_addr))