Merge tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC driver updates from Arnd Bergmann:
 "This branch contains platform-related driver updates for ARM and
  ARM64, these are the areas that bring the changes:

  New drivers:

   - driver support for Renesas R-Car V3M (R8A77970)

   - power management support for Amlogic GX

   - a new driver for the Tegra BPMP thermal sensor

   - a new bus driver for Technologic Systems NBUS

  Changes for subsystems that prefer to merge through arm-soc:

   - the usual updates for reset controller drivers from Philipp Zabel,
     with five added drivers for SoCs in the arc, meson, socfpa,
     uniphier and mediatek families

   - updates to the ARM SCPI and PSCI frameworks, from Sudeep Holla,
     Heiner Kallweit and Lorenzo Pieralisi

  Changes specific to some ARM-based SoC

   - the Freescale/NXP DPAA QBMan drivers from PowerPC can now work on
     ARM as well

   - several changes for power management on Broadcom SoCs

   - various improvements on Qualcomm, Broadcom, Amlogic, Atmel,
     Mediatek

   - minor Cleanups for Samsung, TI OMAP SoCs"

[ NOTE! This doesn't work without the previous ARM SoC device-tree pull,
  because the R8A77970 driver is missing a header file that came from
  that pull.

  The fact that this got merged afterwards only fixes it at this point,
  and bisection of that driver will fail if/when you walk into the
  history of that driver.           - Linus ]

* tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (96 commits)
  soc: amlogic: meson-gx-pwrc-vpu: fix power-off when powered by bootloader
  bus: add driver for the Technologic Systems NBUS
  memory: omap-gpmc: Remove deprecated gpmc_update_nand_reg()
  soc: qcom: remove unused label
  soc: amlogic: gx pm domain: add PM and OF dependencies
  drivers/firmware: psci_checker: Add missing destroy_timer_on_stack()
  dt-bindings: power: add amlogic meson power domain bindings
  soc: amlogic: add Meson GX VPU Domains driver
  soc: qcom: Remote filesystem memory driver
  dt-binding: soc: qcom: Add binding for rmtfs memory
  of: reserved_mem: Accessor for acquiring reserved_mem
  of/platform: Generalize /reserved-memory handling
  soc: mediatek: pwrap: fix fatal compiler error
  soc: mediatek: pwrap: fix compiler errors
  arm64: mediatek: cleanup message for platform selection
  soc: Allow test-building of MediaTek drivers
  soc: mediatek: place Kconfig for all SoC drivers under menu
  soc: mediatek: pwrap: add support for MT7622 SoC
  soc: mediatek: pwrap: add common way for setup CS timing extenstion
  soc: mediatek: pwrap: add MediaTek MT6380 as one slave of pwrap
  ..

1 files changed, 65 insertions, 30 deletions

diff --git a/drivers/soc/fsl/qbman/qman_ccsr.c b/drivers/soc/fsl/qbman/qman_ccsr.c
index 835ce947ffca..79cba58387a5 100644
--- a/drivers/soc/fsl/qbman/qman_ccsr.c
+++ b/drivers/soc/fsl/qbman/qman_ccsr.c
@@ -401,21 +401,42 @@ static int qm_init_pfdr(struct device *dev, u32 pfdr_start, u32 num)
 }
 
 /*
- * Ideally we would use the DMA API to turn rmem->base into a DMA address
- * (especially if iommu translations ever get involved).  Unfortunately, the
- * DMA API currently does not allow mapping anything that is not backed with
- * a struct page.
+ * QMan needs two global memory areas initialized at boot time:
+ *  1) FQD: Frame Queue Descriptors used to manage frame queues
+ *  2) PFDR: Packed Frame Queue Descriptor Records used to store frames
+ * Both areas are reserved using the device tree reserved memory framework
+ * and the addresses and sizes are initialized when the QMan device is probed
  */
 static dma_addr_t fqd_a, pfdr_a;
 static size_t fqd_sz, pfdr_sz;
 
+#ifdef CONFIG_PPC
+/*
+ * Support for PPC Device Tree backward compatibility when compatible
+ * string is set to fsl-qman-fqd and fsl-qman-pfdr
+ */
+static int zero_priv_mem(phys_addr_t addr, size_t sz)
+{
+	/* map as cacheable, non-guarded */
+	void __iomem *tmpp = ioremap_prot(addr, sz, 0);
+
+	if (!tmpp)
+		return -ENOMEM;
+
+	memset_io(tmpp, 0, sz);
+	flush_dcache_range((unsigned long)tmpp,
+			   (unsigned long)tmpp + sz);
+	iounmap(tmpp);
+
+	return 0;
+}
+
 static int qman_fqd(struct reserved_mem *rmem)
 {
 	fqd_a = rmem->base;
 	fqd_sz = rmem->size;
 
 	WARN_ON(!(fqd_a && fqd_sz));
-
 	return 0;
 }
 RESERVEDMEM_OF_DECLARE(qman_fqd, "fsl,qman-fqd", qman_fqd);
@@ -431,32 +452,13 @@ static int qman_pfdr(struct reserved_mem *rmem)
 }
 RESERVEDMEM_OF_DECLARE(qman_pfdr, "fsl,qman-pfdr", qman_pfdr);
 
+#endif
+
 static unsigned int qm_get_fqid_maxcnt(void)
 {
 	return fqd_sz / 64;
 }
 
-/*
- * Flush this memory range from data cache so that QMAN originated
- * transactions for this memory region could be marked non-coherent.
- */
-static int zero_priv_mem(struct device *dev, struct device_node *node,
-			 phys_addr_t addr, size_t sz)
-{
-	/* map as cacheable, non-guarded */
-	void __iomem *tmpp = ioremap_prot(addr, sz, 0);
-
-	if (!tmpp)
-		return -ENOMEM;
-
-	memset_io(tmpp, 0, sz);
-	flush_dcache_range((unsigned long)tmpp,
-			   (unsigned long)tmpp + sz);
-	iounmap(tmpp);
-
-	return 0;
-}
-
 static void log_edata_bits(struct device *dev, u32 bit_count)
 {
 	u32 i, j, mask = 0xffffffff;
@@ -717,6 +719,8 @@ static int fsl_qman_probe(struct platform_device *pdev)
 		qman_ip_rev = QMAN_REV30;
 	else if (major == 3 && minor == 1)
 		qman_ip_rev = QMAN_REV31;
+	else if (major == 3 && minor == 2)
+		qman_ip_rev = QMAN_REV32;
 	else {
 		dev_err(dev, "Unknown QMan version\n");
 		return -ENODEV;
@@ -727,10 +731,41 @@ static int fsl_qman_probe(struct platform_device *pdev)
 		qm_channel_caam = QMAN_CHANNEL_CAAM_REV3;
 	}
 
-	ret = zero_priv_mem(dev, node, fqd_a, fqd_sz);
-	WARN_ON(ret);
-	if (ret)
-		return -ENODEV;
+	if (fqd_a) {
+#ifdef CONFIG_PPC
+		/*
+		 * For PPC backward DT compatibility
+		 * FQD memory MUST be zero'd by software
+		 */
+		zero_priv_mem(fqd_a, fqd_sz);
+#else
+		WARN(1, "Unexpected architecture using non shared-dma-mem reservations");
+#endif
+	} else {
+		/*
+		 * Order of memory regions is assumed as FQD followed by PFDR
+		 * in order to ensure allocations from the correct regions the
+		 * driver initializes then allocates each piece in order
+		 */
+		ret = qbman_init_private_mem(dev, 0, &fqd_a, &fqd_sz);
+		if (ret) {
+			dev_err(dev, "qbman_init_private_mem() for FQD failed 0x%x\n",
+				ret);
+			return -ENODEV;
+		}
+	}
+	dev_dbg(dev, "Allocated FQD 0x%llx 0x%zx\n", fqd_a, fqd_sz);
+
+	if (!pfdr_a) {
+		/* Setup PFDR memory */
+		ret = qbman_init_private_mem(dev, 1, &pfdr_a, &pfdr_sz);
+		if (ret) {
+			dev_err(dev, "qbman_init_private_mem() for PFDR failed 0x%x\n",
+				ret);
+			return -ENODEV;
+		}
+	}
+	dev_dbg(dev, "Allocated PFDR 0x%llx 0x%zx\n", pfdr_a, pfdr_sz);
 
 	ret = qman_init_ccsr(dev);
 	if (ret) {