Merge branch 'iomap-write' into linux-gfs2/for-next

Pull in the gfs2 iomap-write changes: Tweak the existing code to
properly support iomap write and eliminate an unnecessary special case
in gfs2_block_map.  Implement iomap write support for buffered and
direct I/O.  Simplify some of the existing code and eliminate code that
is no longer used:

  gfs2: Remove gfs2_write_{begin,end}
  gfs2: iomap direct I/O support
  gfs2: gfs2_extent_length cleanup
  gfs2: iomap buffered write support
  gfs2: Further iomap cleanups

This is based on the following changes on the xfs 'iomap-4.19-merge'
branch:

  iomap: add private pointer to struct iomap
  iomap: add a page_done callback
  iomap: generic inline data handling
  iomap: complete partial direct I/O writes synchronously
  iomap: mark newly allocated buffer heads as new
  fs: factor out a __generic_write_end helper

Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>

5 files changed, 445 insertions, 111 deletions

diff --git a/drivers/bus/Kconfig b/drivers/bus/Kconfig
index 6dc177bf4c42..d1c0b60e9326 100644
--- a/drivers/bus/Kconfig
+++ b/drivers/bus/Kconfig
@@ -33,7 +33,6 @@ config HISILICON_LPC
 	bool "Support for ISA I/O space on HiSilicon Hip06/7"
 	depends on ARM64 && (ARCH_HISI || COMPILE_TEST)
 	select INDIRECT_PIO
-	select MFD_CORE if ACPI
 	help
 	  Driver to enable I/O access to devices attached to the Low Pin
 	  Count bus on the HiSilicon Hip06/7 SoC.
diff --git a/drivers/bus/arm-cci.c b/drivers/bus/arm-cci.c
index 443e4c3fd357..b8184a903583 100644
--- a/drivers/bus/arm-cci.c
+++ b/drivers/bus/arm-cci.c
@@ -371,8 +371,6 @@ asmlinkage void __naked cci_enable_port_for_self(void)
 	[sizeof_struct_cpu_port] "i" (sizeof(struct cpu_port)),
 	[sizeof_struct_ace_port] "i" (sizeof(struct cci_ace_port)),
 	[offsetof_port_phys] "i" (offsetof(struct cci_ace_port, phys)) );
-
-	unreachable();
 }
 
 /**
diff --git a/drivers/bus/fsl-mc/fsl-mc-allocator.c b/drivers/bus/fsl-mc/fsl-mc-allocator.c
index fb1442b08962..e906ecfe23dd 100644
--- a/drivers/bus/fsl-mc/fsl-mc-allocator.c
+++ b/drivers/bus/fsl-mc/fsl-mc-allocator.c
@@ -354,8 +354,8 @@ int fsl_mc_populate_irq_pool(struct fsl_mc_bus *mc_bus,
 	if (error < 0)
 		return error;
 
-	irq_resources = devm_kzalloc(&mc_bus_dev->dev,
-				     sizeof(*irq_resources) * irq_count,
+	irq_resources = devm_kcalloc(&mc_bus_dev->dev,
+				     irq_count, sizeof(*irq_resources),
 				     GFP_KERNEL);
 	if (!irq_resources) {
 		error = -ENOMEM;
@@ -455,7 +455,7 @@ int __must_check fsl_mc_allocate_irqs(struct fsl_mc_device *mc_dev)
 		return -ENOSPC;
 	}
 
-	irqs = devm_kzalloc(&mc_dev->dev, irq_count * sizeof(irqs[0]),
+	irqs = devm_kcalloc(&mc_dev->dev, irq_count, sizeof(irqs[0]),
 			    GFP_KERNEL);
 	if (!irqs)
 		return -ENOMEM;
diff --git a/drivers/bus/hisi_lpc.c b/drivers/bus/hisi_lpc.c
index 2d4611e4c339..d5f85455fa62 100644
--- a/drivers/bus/hisi_lpc.c
+++ b/drivers/bus/hisi_lpc.c
@@ -11,12 +11,12 @@
 #include <linux/delay.h>
 #include <linux/io.h>
 #include <linux/logic_pio.h>
-#include <linux/mfd/core.h>
 #include <linux/module.h>
 #include <linux/of.h>
 #include <linux/of_address.h>
 #include <linux/of_platform.h>
 #include <linux/pci.h>
+#include <linux/serial_8250.h>
 #include <linux/slab.h>
 
 #define DRV_NAME "hisi-lpc"
@@ -341,15 +341,6 @@ static const struct logic_pio_host_ops hisi_lpc_ops = {
 };
 
 #ifdef CONFIG_ACPI
-#define MFD_CHILD_NAME_PREFIX DRV_NAME"-"
-#define MFD_CHILD_NAME_LEN (ACPI_ID_LEN + sizeof(MFD_CHILD_NAME_PREFIX) - 1)
-
-struct hisi_lpc_mfd_cell {
-	struct mfd_cell_acpi_match acpi_match;
-	char name[MFD_CHILD_NAME_LEN];
-	char pnpid[ACPI_ID_LEN];
-};
-
 static int hisi_lpc_acpi_xlat_io_res(struct acpi_device *adev,
 				     struct acpi_device *host,
 				     struct resource *res)
@@ -368,7 +359,7 @@ static int hisi_lpc_acpi_xlat_io_res(struct acpi_device *adev,
 }
 
 /*
- * hisi_lpc_acpi_set_io_res - set the resources for a child's MFD
+ * hisi_lpc_acpi_set_io_res - set the resources for a child
  * @child: the device node to be updated the I/O resource
  * @hostdev: the device node associated with host controller
  * @res: double pointer to be set to the address of translated resources
@@ -452,78 +443,122 @@ static int hisi_lpc_acpi_set_io_res(struct device *child,
 	return 0;
 }
 
+static int hisi_lpc_acpi_remove_subdev(struct device *dev, void *unused)
+{
+	platform_device_unregister(to_platform_device(dev));
+	return 0;
+}
+
+struct hisi_lpc_acpi_cell {
+	const char *hid;
+	const char *name;
+	void *pdata;
+	size_t pdata_size;
+};
+
 /*
  * hisi_lpc_acpi_probe - probe children for ACPI FW
  * @hostdev: LPC host device pointer
  *
  * Returns 0 when successful, and a negative value for failure.
  *
- * Scan all child devices and create a per-device MFD with
- * logical PIO translated IO resources.
+ * Create a platform device per child, fixing up the resources
+ * from bus addresses to Logical PIO addresses.
+ *
  */
 static int hisi_lpc_acpi_probe(struct device *hostdev)
 {
 	struct acpi_device *adev = ACPI_COMPANION(hostdev);
-	struct hisi_lpc_mfd_cell *hisi_lpc_mfd_cells;
-	struct mfd_cell *mfd_cells;
 	struct acpi_device *child;
-	int size, ret, count = 0, cell_num = 0;
-
-	list_for_each_entry(child, &adev->children, node)
-		cell_num++;
-
-	/* allocate the mfd cell and companion ACPI info, one per child */
-	size = sizeof(*mfd_cells) + sizeof(*hisi_lpc_mfd_cells);
-	mfd_cells = devm_kcalloc(hostdev, cell_num, size, GFP_KERNEL);
-	if (!mfd_cells)
-		return -ENOMEM;
+	int ret;
 
-	hisi_lpc_mfd_cells = (struct hisi_lpc_mfd_cell *)&mfd_cells[cell_num];
 	/* Only consider the children of the host */
 	list_for_each_entry(child, &adev->children, node) {
-		struct mfd_cell *mfd_cell = &mfd_cells[count];
-		struct hisi_lpc_mfd_cell *hisi_lpc_mfd_cell =
-					&hisi_lpc_mfd_cells[count];
-		struct mfd_cell_acpi_match *acpi_match =
-					&hisi_lpc_mfd_cell->acpi_match;
-		char *name = hisi_lpc_mfd_cell[count].name;
-		char *pnpid = hisi_lpc_mfd_cell[count].pnpid;
-		struct mfd_cell_acpi_match match = {
-			.pnpid = pnpid,
+		const char *hid = acpi_device_hid(child);
+		const struct hisi_lpc_acpi_cell *cell;
+		struct platform_device *pdev;
+		const struct resource *res;
+		bool found = false;
+		int num_res;
+
+		ret = hisi_lpc_acpi_set_io_res(&child->dev, &adev->dev, &res,
+					       &num_res);
+		if (ret) {
+			dev_warn(hostdev, "set resource fail (%d)\n", ret);
+			goto fail;
+		}
+
+		cell = (struct hisi_lpc_acpi_cell []){
+			/* ipmi */
+			{
+				.hid = "IPI0001",
+				.name = "hisi-lpc-ipmi",
+			},
+			/* 8250-compatible uart */
+			{
+				.hid = "HISI1031",
+				.name = "serial8250",
+				.pdata = (struct plat_serial8250_port []) {
+					{
+						.iobase = res->start,
+						.uartclk = 1843200,
+						.iotype = UPIO_PORT,
+						.flags = UPF_BOOT_AUTOCONF,
+					},
+					{}
+				},
+				.pdata_size = 2 *
+					sizeof(struct plat_serial8250_port),
+			},
+			{}
 		};
 
-		/*
-		 * For any instances of this host controller (Hip06 and Hip07
-		 * are the only chipsets), we would not have multiple slaves
-		 * with the same HID. And in any system we would have just one
-		 * controller active. So don't worrry about MFD name clashes.
-		 */
-		snprintf(name, MFD_CHILD_NAME_LEN, MFD_CHILD_NAME_PREFIX"%s",
-			 acpi_device_hid(child));
-		snprintf(pnpid, ACPI_ID_LEN, "%s", acpi_device_hid(child));
-
-		memcpy(acpi_match, &match, sizeof(*acpi_match));
-		mfd_cell->name = name;
-		mfd_cell->acpi_match = acpi_match;
-
-		ret = hisi_lpc_acpi_set_io_res(&child->dev, &adev->dev,
-					       &mfd_cell->resources,
-					       &mfd_cell->num_resources);
-		if (ret) {
-			dev_warn(&child->dev, "set resource fail (%d)\n", ret);
-			return ret;
+		for (; cell && cell->name; cell++) {
+			if (!strcmp(cell->hid, hid)) {
+				found = true;
+				break;
+			}
 		}
-		count++;
-	}
 
-	ret = mfd_add_devices(hostdev, PLATFORM_DEVID_NONE,
-			      mfd_cells, cell_num, NULL, 0, NULL);
-	if (ret) {
-		dev_err(hostdev, "failed to add mfd cells (%d)\n", ret);
-		return ret;
+		if (!found) {
+			dev_warn(hostdev,
+				 "could not find cell for child device (%s)\n",
+				 hid);
+			ret = -ENODEV;
+			goto fail;
+		}
+
+		pdev = platform_device_alloc(cell->name, PLATFORM_DEVID_AUTO);
+		if (!pdev) {
+			ret = -ENOMEM;
+			goto fail;
+		}
+
+		pdev->dev.parent = hostdev;
+		ACPI_COMPANION_SET(&pdev->dev, child);
+
+		ret = platform_device_add_resources(pdev, res, num_res);
+		if (ret)
+			goto fail;
+
+		ret = platform_device_add_data(pdev, cell->pdata,
+					       cell->pdata_size);
+		if (ret)
+			goto fail;
+
+		ret = platform_device_add(pdev);
+		if (ret)
+			goto fail;
+
+		acpi_device_set_enumerated(child);
 	}
 
 	return 0;
+
+fail:
+	device_for_each_child(hostdev, NULL,
+			      hisi_lpc_acpi_remove_subdev);
+	return ret;
 }
 
 static const struct acpi_device_id hisi_lpc_acpi_match[] = {
diff --git a/drivers/bus/ti-sysc.c b/drivers/bus/ti-sysc.c
index 7cd2fd04b212..1cc29629d238 100644
--- a/drivers/bus/ti-sysc.c
+++ b/drivers/bus/ti-sysc.c
@@ -19,6 +19,7 @@
 #include <linux/platform_device.h>
 #include <linux/pm_domain.h>
 #include <linux/pm_runtime.h>
+#include <linux/reset.h>
 #include <linux/of_address.h>
 #include <linux/of_platform.h>
 #include <linux/slab.h>
@@ -32,10 +33,18 @@ static const char * const reg_names[] = { "rev", "sysc", "syss", };
 enum sysc_clocks {
 	SYSC_FCK,
 	SYSC_ICK,
+	SYSC_OPTFCK0,
+	SYSC_OPTFCK1,
+	SYSC_OPTFCK2,
+	SYSC_OPTFCK3,
+	SYSC_OPTFCK4,
+	SYSC_OPTFCK5,
+	SYSC_OPTFCK6,
+	SYSC_OPTFCK7,
 	SYSC_MAX_CLOCKS,
 };
 
-static const char * const clock_names[] = { "fck", "ick", };
+static const char * const clock_names[SYSC_ICK + 1] = { "fck", "ick", };
 
 #define SYSC_IDLEMODE_MASK		3
 #define SYSC_CLOCKACTIVITY_MASK		3
@@ -48,6 +57,8 @@ static const char * const clock_names[] = { "fck", "ick", };
  * @module_va: virtual address of the interconnect target module
  * @offsets: register offsets from module base
  * @clocks: clocks used by the interconnect target module
+ * @clock_roles: clock role names for the found clocks
+ * @nr_clocks: number of clocks used by the interconnect target module
  * @legacy_mode: configured for legacy mode if set
  * @cap: interconnect target module capabilities
  * @cfg: interconnect target module configuration
@@ -61,7 +72,10 @@ struct sysc {
 	u32 module_size;
 	void __iomem *module_va;
 	int offsets[SYSC_MAX_REGS];
-	struct clk *clocks[SYSC_MAX_CLOCKS];
+	struct clk **clocks;
+	const char **clock_roles;
+	int nr_clocks;
+	struct reset_control *rsts;
 	const char *legacy_mode;
 	const struct sysc_capabilities *cap;
 	struct sysc_config cfg;
@@ -88,6 +102,11 @@ static u32 sysc_read(struct sysc *ddata, int offset)
 	return readl_relaxed(ddata->module_va + offset);
 }
 
+static bool sysc_opt_clks_needed(struct sysc *ddata)
+{
+	return !!(ddata->cfg.quirks & SYSC_QUIRK_OPT_CLKS_NEEDED);
+}
+
 static u32 sysc_read_revision(struct sysc *ddata)
 {
 	int offset = ddata->offsets[SYSC_REVISION];
@@ -98,21 +117,28 @@ static u32 sysc_read_revision(struct sysc *ddata)
 	return sysc_read(ddata, offset);
 }
 
-static int sysc_get_one_clock(struct sysc *ddata,
-			      enum sysc_clocks index)
+static int sysc_get_one_clock(struct sysc *ddata, const char *name)
 {
-	const char *name;
-	int error;
+	int error, i, index = -ENODEV;
+
+	if (!strncmp(clock_names[SYSC_FCK], name, 3))
+		index = SYSC_FCK;
+	else if (!strncmp(clock_names[SYSC_ICK], name, 3))
+		index = SYSC_ICK;
+
+	if (index < 0) {
+		for (i = SYSC_OPTFCK0; i < SYSC_MAX_CLOCKS; i++) {
+			if (!ddata->clocks[i]) {
+				index = i;
+				break;
+			}
+		}
+	}
 
-	switch (index) {
-	case SYSC_FCK:
-		break;
-	case SYSC_ICK:
-		break;
-	default:
-		return -EINVAL;
+	if (index < 0) {
+		dev_err(ddata->dev, "clock %s not added\n", name);
+		return index;
 	}
-	name = clock_names[index];
 
 	ddata->clocks[index] = devm_clk_get(ddata->dev, name);
 	if (IS_ERR(ddata->clocks[index])) {
@@ -138,10 +164,50 @@ static int sysc_get_one_clock(struct sysc *ddata,
 
 static int sysc_get_clocks(struct sysc *ddata)
 {
-	int i, error;
+	struct device_node *np = ddata->dev->of_node;
+	struct property *prop;
+	const char *name;
+	int nr_fck = 0, nr_ick = 0, i, error = 0;
 
-	for (i = 0; i < SYSC_MAX_CLOCKS; i++) {
-		error = sysc_get_one_clock(ddata, i);
+	ddata->clock_roles = devm_kzalloc(ddata->dev,
+					  sizeof(*ddata->clock_roles) *
+					  SYSC_MAX_CLOCKS,
+					  GFP_KERNEL);
+	if (!ddata->clock_roles)
+		return -ENOMEM;
+
+	of_property_for_each_string(np, "clock-names", prop, name) {
+		if (!strncmp(clock_names[SYSC_FCK], name, 3))
+			nr_fck++;
+		if (!strncmp(clock_names[SYSC_ICK], name, 3))
+			nr_ick++;
+		ddata->clock_roles[ddata->nr_clocks] = name;
+		ddata->nr_clocks++;
+	}
+
+	if (ddata->nr_clocks < 1)
+		return 0;
+
+	if (ddata->nr_clocks > SYSC_MAX_CLOCKS) {
+		dev_err(ddata->dev, "too many clocks for %pOF\n", np);
+
+		return -EINVAL;
+	}
+
+	if (nr_fck > 1 || nr_ick > 1) {
+		dev_err(ddata->dev, "max one fck and ick for %pOF\n", np);
+
+		return -EINVAL;
+	}
+
+	ddata->clocks = devm_kzalloc(ddata->dev,
+				     sizeof(*ddata->clocks) * ddata->nr_clocks,
+				     GFP_KERNEL);
+	if (!ddata->clocks)
+		return -ENOMEM;
+
+	for (i = 0; i < ddata->nr_clocks; i++) {
+		error = sysc_get_one_clock(ddata, ddata->clock_roles[i]);
 		if (error && error != -ENOENT)
 			return error;
 	}
@@ -150,6 +216,42 @@ static int sysc_get_clocks(struct sysc *ddata)
 }
 
 /**
+ * sysc_init_resets - reset module on init
+ * @ddata: device driver data
+ *
+ * A module can have both OCP softreset control and external rstctrl.
+ * If more complicated rstctrl resets are needed, please handle these
+ * directly from the child device driver and map only the module reset
+ * for the parent interconnect target module device.
+ *
+ * Automatic reset of the module on init can be skipped with the
+ * "ti,no-reset-on-init" device tree property.
+ */
+static int sysc_init_resets(struct sysc *ddata)
+{
+	int error;
+
+	ddata->rsts =
+		devm_reset_control_array_get_optional_exclusive(ddata->dev);
+	if (IS_ERR(ddata->rsts))
+		return PTR_ERR(ddata->rsts);
+
+	if (ddata->cfg.quirks & SYSC_QUIRK_NO_RESET_ON_INIT)
+		goto deassert;
+
+	error = reset_control_assert(ddata->rsts);
+	if (error)
+		return error;
+
+deassert:
+	error = reset_control_deassert(ddata->rsts);
+	if (error)
+		return error;
+
+	return 0;
+}
+
+/**
  * sysc_parse_and_check_child_range - parses module IO region from ranges
  * @ddata: device driver data
  *
@@ -533,9 +635,13 @@ static int __maybe_unused sysc_runtime_suspend(struct device *dev)
 		goto idled;
 	}
 
-	for (i = 0; i < SYSC_MAX_CLOCKS; i++) {
+	for (i = 0; i < ddata->nr_clocks; i++) {
 		if (IS_ERR_OR_NULL(ddata->clocks[i]))
 			continue;
+
+		if (i >= SYSC_OPTFCK0 && !sysc_opt_clks_needed(ddata))
+			break;
+
 		clk_disable(ddata->clocks[i]);
 	}
 
@@ -572,9 +678,13 @@ static int __maybe_unused sysc_runtime_resume(struct device *dev)
 		goto awake;
 	}
 
-	for (i = 0; i < SYSC_MAX_CLOCKS; i++) {
+	for (i = 0; i < ddata->nr_clocks; i++) {
 		if (IS_ERR_OR_NULL(ddata->clocks[i]))
 			continue;
+
+		if (i >= SYSC_OPTFCK0 && !sysc_opt_clks_needed(ddata))
+			break;
+
 		error = clk_enable(ddata->clocks[i]);
 		if (error)
 			return error;
@@ -590,23 +700,103 @@ awake:
 static int sysc_suspend(struct device *dev)
 {
 	struct sysc *ddata;
+	int error;
 
 	ddata = dev_get_drvdata(dev);
 
+	if (ddata->cfg.quirks & (SYSC_QUIRK_RESOURCE_PROVIDER |
+				 SYSC_QUIRK_LEGACY_IDLE))
+		return 0;
+
 	if (!ddata->enabled)
 		return 0;
 
+	dev_dbg(ddata->dev, "%s %s\n", __func__,
+		ddata->name ? ddata->name : "");
+
+	error = pm_runtime_put_sync_suspend(dev);
+	if (error < 0) {
+		dev_warn(ddata->dev, "%s not idle %i %s\n",
+			 __func__, error,
+			 ddata->name ? ddata->name : "");
+
+		return 0;
+	}
+
 	ddata->needs_resume = true;
 
-	return sysc_runtime_suspend(dev);
+	return 0;
 }
 
 static int sysc_resume(struct device *dev)
 {
 	struct sysc *ddata;
+	int error;
+
+	ddata = dev_get_drvdata(dev);
+
+	if (ddata->cfg.quirks & (SYSC_QUIRK_RESOURCE_PROVIDER |
+				 SYSC_QUIRK_LEGACY_IDLE))
+		return 0;
+
+	if (ddata->needs_resume) {
+		dev_dbg(ddata->dev, "%s %s\n", __func__,
+			ddata->name ? ddata->name : "");
+
+		error = pm_runtime_get_sync(dev);
+		if (error < 0) {
+			dev_err(ddata->dev, "%s  error %i %s\n",
+				__func__, error,
+				 ddata->name ? ddata->name : "");
+
+			return error;
+		}
+
+		ddata->needs_resume = false;
+	}
+
+	return 0;
+}
+
+static int sysc_noirq_suspend(struct device *dev)
+{
+	struct sysc *ddata;
 
 	ddata = dev_get_drvdata(dev);
+
+	if (ddata->cfg.quirks & SYSC_QUIRK_LEGACY_IDLE)
+		return 0;
+
+	if (!(ddata->cfg.quirks & SYSC_QUIRK_RESOURCE_PROVIDER))
+		return 0;
+
+	if (!ddata->enabled)
+		return 0;
+
+	dev_dbg(ddata->dev, "%s %s\n", __func__,
+		ddata->name ? ddata->name : "");
+
+	ddata->needs_resume = true;
+
+	return sysc_runtime_suspend(dev);
+}
+
+static int sysc_noirq_resume(struct device *dev)
+{
+	struct sysc *ddata;
+
+	ddata = dev_get_drvdata(dev);
+
+	if (ddata->cfg.quirks & SYSC_QUIRK_LEGACY_IDLE)
+		return 0;
+
+	if (!(ddata->cfg.quirks & SYSC_QUIRK_RESOURCE_PROVIDER))
+		return 0;
+
 	if (ddata->needs_resume) {
+		dev_dbg(ddata->dev, "%s %s\n", __func__,
+			ddata->name ? ddata->name : "");
+
 		ddata->needs_resume = false;
 
 		return sysc_runtime_resume(dev);
@@ -618,6 +808,7 @@ static int sysc_resume(struct device *dev)
 
 static const struct dev_pm_ops sysc_pm_ops = {
 	SET_SYSTEM_SLEEP_PM_OPS(sysc_suspend, sysc_resume)
+	SET_NOIRQ_SYSTEM_SLEEP_PM_OPS(sysc_noirq_suspend, sysc_noirq_resume)
 	SET_RUNTIME_PM_OPS(sysc_runtime_suspend,
 			   sysc_runtime_resume,
 			   NULL)
@@ -649,9 +840,29 @@ struct sysc_revision_quirk {
 	}
 
 static const struct sysc_revision_quirk sysc_revision_quirks[] = {
+	/* These need to use noirq_suspend */
+	SYSC_QUIRK("control", 0, 0, 0x10, -1, 0x40000900, 0xffffffff,
+		   SYSC_QUIRK_RESOURCE_PROVIDER),
+	SYSC_QUIRK("i2c", 0, 0, 0x10, 0x90, 0x5040000a, 0xffffffff,
+		   SYSC_QUIRK_RESOURCE_PROVIDER),
+	SYSC_QUIRK("mcspi", 0, 0, 0x10, -1, 0x40300a0b, 0xffffffff,
+		   SYSC_QUIRK_RESOURCE_PROVIDER),
+	SYSC_QUIRK("prcm", 0, 0, -1, -1, 0x40000100, 0xffffffff,
+		   SYSC_QUIRK_RESOURCE_PROVIDER),
+	SYSC_QUIRK("ocp2scp", 0, 0, 0x10, 0x14, 0x50060005, 0xffffffff,
+		   SYSC_QUIRK_RESOURCE_PROVIDER),
+	SYSC_QUIRK("padconf", 0, 0, 0x10, -1, 0x4fff0800, 0xffffffff,
+		   SYSC_QUIRK_RESOURCE_PROVIDER),
+	SYSC_QUIRK("scm", 0, 0, 0x10, -1, 0x40000900, 0xffffffff,
+		   SYSC_QUIRK_RESOURCE_PROVIDER),
+	SYSC_QUIRK("scrm", 0, 0, -1, -1, 0x00000010, 0xffffffff,
+		   SYSC_QUIRK_RESOURCE_PROVIDER),
+	SYSC_QUIRK("sdma", 0, 0, 0x2c, 0x28, 0x00010900, 0xffffffff,
+		   SYSC_QUIRK_RESOURCE_PROVIDER),
+
 	/* These drivers need to be fixed to not use pm_runtime_irq_safe() */
 	SYSC_QUIRK("gpio", 0, 0, 0x10, 0x114, 0x50600801, 0xffffffff,
-		   SYSC_QUIRK_LEGACY_IDLE),
+		   SYSC_QUIRK_LEGACY_IDLE | SYSC_QUIRK_OPT_CLKS_IN_RESET),
 	SYSC_QUIRK("mmu", 0, 0, 0x10, 0x14, 0x00000020, 0xffffffff,
 		   SYSC_QUIRK_LEGACY_IDLE),
 	SYSC_QUIRK("mmu", 0, 0, 0x10, 0x14, 0x00000030, 0xffffffff,
@@ -664,8 +875,40 @@ static const struct sysc_revision_quirk sysc_revision_quirks[] = {
 		   SYSC_QUIRK_LEGACY_IDLE),
 	SYSC_QUIRK("timer", 0, 0, 0x10, 0x14, 0x00000015, 0xffffffff,
 		   SYSC_QUIRK_LEGACY_IDLE),
+	/* Some timers on omap4 and later */
+	SYSC_QUIRK("timer", 0, 0, 0x10, -1, 0x4fff1301, 0xffffffff,
+		   SYSC_QUIRK_LEGACY_IDLE),
 	SYSC_QUIRK("uart", 0, 0x50, 0x54, 0x58, 0x00000052, 0xffffffff,
 		   SYSC_QUIRK_LEGACY_IDLE),
+	/* Uarts on omap4 and later */
+	SYSC_QUIRK("uart", 0, 0x50, 0x54, 0x58, 0x50411e03, 0xffffffff,
+		   SYSC_QUIRK_LEGACY_IDLE),
+
+	/* These devices don't yet suspend properly without legacy setting */
+	SYSC_QUIRK("sdio", 0, 0, 0x10, -1, 0x40202301, 0xffffffff,
+		   SYSC_QUIRK_LEGACY_IDLE),
+	SYSC_QUIRK("wdt", 0, 0, 0x10, 0x14, 0x502a0500, 0xffffffff,
+		   SYSC_QUIRK_LEGACY_IDLE),
+	SYSC_QUIRK("wdt", 0, 0, 0x10, 0x14, 0x502a0d00, 0xffffffff,
+		   SYSC_QUIRK_LEGACY_IDLE),
+
+#ifdef DEBUG
+	SYSC_QUIRK("aess", 0, 0, 0x10, -1, 0x40000000, 0xffffffff, 0),
+	SYSC_QUIRK("gpu", 0, 0x1fc00, 0x1fc10, -1, 0, 0, 0),
+	SYSC_QUIRK("hdq1w", 0, 0, 0x14, 0x18, 0x00000006, 0xffffffff, 0),
+	SYSC_QUIRK("hsi", 0, 0, 0x10, 0x14, 0x50043101, 0xffffffff, 0),
+	SYSC_QUIRK("iss", 0, 0, 0x10, -1, 0x40000101, 0xffffffff, 0),
+	SYSC_QUIRK("mcasp", 0, 0, 0x4, -1, 0x44306302, 0xffffffff, 0),
+	SYSC_QUIRK("mcbsp", 0, -1, 0x8c, -1, 0, 0, 0),
+	SYSC_QUIRK("mailbox", 0, 0, 0x10, -1, 0x00000400, 0xffffffff, 0),
+	SYSC_QUIRK("slimbus", 0, 0, 0x10, -1, 0x40000902, 0xffffffff, 0),
+	SYSC_QUIRK("slimbus", 0, 0, 0x10, -1, 0x40002903, 0xffffffff, 0),
+	SYSC_QUIRK("spinlock", 0, 0, 0x10, -1, 0x50020000, 0xffffffff, 0),
+	SYSC_QUIRK("usbhstll", 0, 0, 0x10, 0x14, 0x00000004, 0xffffffff, 0),
+	SYSC_QUIRK("usb_host_hs", 0, 0, 0x10, 0x14, 0x50700100, 0xffffffff, 0),
+	SYSC_QUIRK("usb_otg_hs", 0, 0x400, 0x404, 0x408, 0x00000050,
+		   0xffffffff, 0),
+#endif
 };
 
 static void sysc_init_revision_quirks(struct sysc *ddata)
@@ -716,6 +959,7 @@ static int sysc_init_module(struct sysc *ddata)
 
 		return 0;
 	}
+
 	ddata->revision = sysc_read_revision(ddata);
 	pm_runtime_put_sync(ddata->dev);
 
@@ -811,29 +1055,58 @@ static int sysc_init_syss_mask(struct sysc *ddata)
 }
 
 /*
- * Many child device drivers need to have fck available to get the clock
- * rate for device internal configuration.
+ * Many child device drivers need to have fck and opt clocks available
+ * to get the clock rate for device internal configuration etc.
  */
-static int sysc_child_add_fck(struct sysc *ddata,
-			      struct device *child)
+static int sysc_child_add_named_clock(struct sysc *ddata,
+				      struct device *child,
+				      const char *name)
 {
-	struct clk *fck;
+	struct clk *clk;
 	struct clk_lookup *l;
-	const char *name = clock_names[SYSC_FCK];
+	int error = 0;
 
-	if (IS_ERR_OR_NULL(ddata->clocks[SYSC_FCK]))
+	if (!name)
 		return 0;
 
-	fck = clk_get(child, name);
-	if (!IS_ERR(fck)) {
-		clk_put(fck);
+	clk = clk_get(child, name);
+	if (!IS_ERR(clk)) {
+		clk_put(clk);
 
 		return -EEXIST;
 	}
 
-	l = clkdev_create(ddata->clocks[SYSC_FCK], name, dev_name(child));
+	clk = clk_get(ddata->dev, name);
+	if (IS_ERR(clk))
+		return -ENODEV;
+
+	l = clkdev_create(clk, name, dev_name(child));
+	if (!l)
+		error = -ENOMEM;
+
+	clk_put(clk);
+
+	return error;
+}
+
+static int sysc_child_add_clocks(struct sysc *ddata,
+				 struct device *child)
+{
+	int i, error;
+
+	for (i = 0; i < ddata->nr_clocks; i++) {
+		error = sysc_child_add_named_clock(ddata,
+						   child,
+						   ddata->clock_roles[i]);
+		if (error && error != -EEXIST) {
+			dev_err(ddata->dev, "could not add child clock %s: %i\n",
+				ddata->clock_roles[i], error);
+
+			return error;
+		}
+	}
 
-	return l ? 0 : -ENODEV;
+	return 0;
 }
 
 static struct device_type sysc_device_type = {
@@ -891,18 +1164,33 @@ static int sysc_child_suspend_noirq(struct device *dev)
 
 	ddata = sysc_child_to_parent(dev);
 
+	dev_dbg(ddata->dev, "%s %s\n", __func__,
+		ddata->name ? ddata->name : "");
+
 	error = pm_generic_suspend_noirq(dev);
-	if (error)
+	if (error) {
+		dev_err(dev, "%s error at %i: %i\n",
+			__func__, __LINE__, error);
+
 		return error;
+	}
 
 	if (!pm_runtime_status_suspended(dev)) {
 		error = pm_generic_runtime_suspend(dev);
-		if (error)
+		if (error) {
+			dev_err(dev, "%s error at %i: %i\n",
+				__func__, __LINE__, error);
+
 			return error;
+		}
 
 		error = sysc_runtime_suspend(ddata->dev);
-		if (error)
+		if (error) {
+			dev_err(dev, "%s error at %i: %i\n",
+				__func__, __LINE__, error);
+
 			return error;
+		}
 
 		ddata->child_needs_resume = true;
 	}
@@ -917,6 +1205,9 @@ static int sysc_child_resume_noirq(struct device *dev)
 
 	ddata = sysc_child_to_parent(dev);
 
+	dev_dbg(ddata->dev, "%s %s\n", __func__,
+		ddata->name ? ddata->name : "");
+
 	if (ddata->child_needs_resume) {
 		ddata->child_needs_resume = false;
 
@@ -983,10 +1274,9 @@ static int sysc_notifier_call(struct notifier_block *nb,
 
 	switch (event) {
 	case BUS_NOTIFY_ADD_DEVICE:
-		error = sysc_child_add_fck(ddata, dev);
-		if (error && error != -EEXIST)
-			dev_warn(ddata->dev, "could not add %s fck: %i\n",
-				 dev_name(dev), error);
+		error = sysc_child_add_clocks(ddata, dev);
+		if (error)
+			return error;
 		sysc_legacy_idle_quirk(ddata, dev);
 		break;
 	default:
@@ -1314,6 +1604,11 @@ static void ti_sysc_idle(struct work_struct *work)
 		pm_runtime_put_sync(ddata->dev);
 }
 
+static const struct of_device_id sysc_match_table[] = {
+	{ .compatible = "simple-bus", },
+	{ /* sentinel */ },
+};
+
 static int sysc_probe(struct platform_device *pdev)
 {
 	struct ti_sysc_platform_data *pdata = dev_get_platdata(&pdev->dev);
@@ -1359,8 +1654,11 @@ static int sysc_probe(struct platform_device *pdev)
 	if (error)
 		goto unprepare;
 
-	pm_runtime_enable(ddata->dev);
+	error = sysc_init_resets(ddata);
+	if (error)
+		return error;
 
+	pm_runtime_enable(ddata->dev);
 	error = sysc_init_module(ddata);
 	if (error)
 		goto unprepare;
@@ -1375,8 +1673,8 @@ static int sysc_probe(struct platform_device *pdev)
 	sysc_show_registers(ddata);
 
 	ddata->dev->type = &sysc_device_type;
-	error = of_platform_populate(ddata->dev->of_node,
-				     NULL, pdata ? pdata->auxdata : NULL,
+	error = of_platform_populate(ddata->dev->of_node, sysc_match_table,
+				     pdata ? pdata->auxdata : NULL,
 				     ddata->dev);
 	if (error)
 		goto err;
@@ -1391,6 +1689,9 @@ static int sysc_probe(struct platform_device *pdev)
 		pm_runtime_put(&pdev->dev);
 	}
 
+	if (!of_get_available_child_count(ddata->dev->of_node))
+		reset_control_assert(ddata->rsts);
+
 	return 0;
 
 err:
@@ -1420,6 +1721,7 @@ static int sysc_remove(struct platform_device *pdev)
 
 	pm_runtime_put_sync(&pdev->dev);
 	pm_runtime_disable(&pdev->dev);
+	reset_control_assert(ddata->rsts);
 
 unprepare:
 	sysc_unprepare(ddata);