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authorLinus Torvalds <torvalds@linux-foundation.org>2018-08-23 13:52:46 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2018-08-23 13:52:46 -0700
commitf3ea496213819c80ce9c49a9b65f9261da713d11 (patch)
tree1c8fad9c5c609504c2916ad3844494093f89f8f1 /drivers/memory
parent9e259f9352d52053058a234f7c062c4e4f56dc85 (diff)
parent29ed45fff05899f6f39d05fe1c32b1bc51f8926b (diff)
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Merge tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC driver updates from Olof Johansson: "Some of the larger changes this merge window: - Removal of drivers for Exynos5440, a Samsung SoC that never saw widespread use. - Uniphier support for USB3 and SPI reset handling - Syste control and SRAM drivers and bindings for Allwinner platforms - Qualcomm AOSS (Always-on subsystem) reset controller drivers - Raspberry Pi hwmon driver for voltage - Mediatek pwrap (pmic) support for MT6797 SoC" * tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (52 commits) drivers/firmware: psci_checker: stash and use topology_core_cpumask for hotplug tests soc: fsl: cleanup Kconfig menu soc: fsl: dpio: Convert DPIO documentation to .rst staging: fsl-mc: Remove remaining files staging: fsl-mc: Move DPIO from staging to drivers/soc/fsl staging: fsl-dpaa2: eth: move generic FD defines to DPIO soc: fsl: qe: gpio: Add qe_gpio_set_multiple usb: host: exynos: Remove support for Exynos5440 clk: samsung: Remove support for Exynos5440 soc: sunxi: Add the A13, A23 and H3 system control compatibles reset: uniphier: add reset control support for SPI cpufreq: exynos: Remove support for Exynos5440 ata: ahci-platform: Remove support for Exynos5440 soc: imx6qp: Use GENPD_FLAG_ALWAYS_ON for PU errata soc: mediatek: pwrap: add mt6351 driver for mt6797 SoCs soc: mediatek: pwrap: add pwrap driver for mt6797 SoCs soc: mediatek: pwrap: fix cipher init setting error dt-bindings: pwrap: mediatek: add pwrap support for MT6797 reset: uniphier: add USB3 core reset control dt-bindings: reset: uniphier: add USB3 core reset support ...
Diffstat (limited to 'drivers/memory')
-rw-r--r--drivers/memory/tegra/mc.c16
-rw-r--r--drivers/memory/ti-emif-pm.c33
2 files changed, 39 insertions, 10 deletions
diff --git a/drivers/memory/tegra/mc.c b/drivers/memory/tegra/mc.c
index bb93cc53554e..bd25faf6d13d 100644
--- a/drivers/memory/tegra/mc.c
+++ b/drivers/memory/tegra/mc.c
@@ -672,13 +672,6 @@ static int tegra_mc_probe(struct platform_device *pdev)
return err;
}
- err = tegra_mc_reset_setup(mc);
- if (err < 0) {
- dev_err(&pdev->dev, "failed to register reset controller: %d\n",
- err);
- return err;
- }
-
mc->irq = platform_get_irq(pdev, 0);
if (mc->irq < 0) {
dev_err(&pdev->dev, "interrupt not specified\n");
@@ -697,13 +690,16 @@ static int tegra_mc_probe(struct platform_device *pdev)
return err;
}
+ err = tegra_mc_reset_setup(mc);
+ if (err < 0)
+ dev_err(&pdev->dev, "failed to register reset controller: %d\n",
+ err);
+
if (IS_ENABLED(CONFIG_TEGRA_IOMMU_SMMU)) {
mc->smmu = tegra_smmu_probe(&pdev->dev, mc->soc->smmu, mc);
- if (IS_ERR(mc->smmu)) {
+ if (IS_ERR(mc->smmu))
dev_err(&pdev->dev, "failed to probe SMMU: %ld\n",
PTR_ERR(mc->smmu));
- return PTR_ERR(mc->smmu);
- }
}
return 0;
diff --git a/drivers/memory/ti-emif-pm.c b/drivers/memory/ti-emif-pm.c
index 632651f4b6e8..2250d03ea17f 100644
--- a/drivers/memory/ti-emif-pm.c
+++ b/drivers/memory/ti-emif-pm.c
@@ -249,6 +249,34 @@ static const struct of_device_id ti_emif_of_match[] = {
};
MODULE_DEVICE_TABLE(of, ti_emif_of_match);
+#ifdef CONFIG_PM_SLEEP
+static int ti_emif_resume(struct device *dev)
+{
+ unsigned long tmp =
+ __raw_readl((void *)emif_instance->ti_emif_sram_virt);
+
+ /*
+ * Check to see if what we are copying is already present in the
+ * first byte at the destination, only copy if it is not which
+ * indicates we have lost context and sram no longer contains
+ * the PM code
+ */
+ if (tmp != ti_emif_sram)
+ ti_emif_push_sram(dev, emif_instance);
+
+ return 0;
+}
+
+static int ti_emif_suspend(struct device *dev)
+{
+ /*
+ * The contents will be present in DDR hence no need to
+ * explicitly save
+ */
+ return 0;
+}
+#endif /* CONFIG_PM_SLEEP */
+
static int ti_emif_probe(struct platform_device *pdev)
{
int ret;
@@ -308,12 +336,17 @@ static int ti_emif_remove(struct platform_device *pdev)
return 0;
}
+static const struct dev_pm_ops ti_emif_pm_ops = {
+ SET_SYSTEM_SLEEP_PM_OPS(ti_emif_suspend, ti_emif_resume)
+};
+
static struct platform_driver ti_emif_driver = {
.probe = ti_emif_probe,
.remove = ti_emif_remove,
.driver = {
.name = KBUILD_MODNAME,
.of_match_table = of_match_ptr(ti_emif_of_match),
+ .pm = &ti_emif_pm_ops,
},
};
module_platform_driver(ti_emif_driver);