Add cs42l43 PC focused SoundWire CODEC

Merge series from Charles Keepax <ckeepax@opensource.cirrus.com>:

This patch chain adds support for the Cirrus Logic cs42l43 PC focused
SoundWire CODEC. The chain is currently based of Lee's for-mfd-next
branch.

This series is mostly just a resend keeping pace with the kernel under
it, except for a minor fixup in the ASoC stuff.

Thanks,
Charles

Charles Keepax (4):
  dt-bindings: mfd: cirrus,cs42l43: Add initial DT binding
  mfd: cs42l43: Add support for cs42l43 core driver
  pinctrl: cs42l43: Add support for the cs42l43
  ASoC: cs42l43: Add support for the cs42l43

Lucas Tanure (2):
  soundwire: bus: Allow SoundWire peripherals to register IRQ handlers
  spi: cs42l43: Add SPI controller support

 .../bindings/sound/cirrus,cs42l43.yaml        |  313 +++
 MAINTAINERS                                   |    4 +
 drivers/mfd/Kconfig                           |   23 +
 drivers/mfd/Makefile                          |    3 +
 drivers/mfd/cs42l43-i2c.c                     |   98 +
 drivers/mfd/cs42l43-sdw.c                     |  239 ++
 drivers/mfd/cs42l43.c                         | 1188 +++++++++
 drivers/mfd/cs42l43.h                         |   28 +
 drivers/pinctrl/cirrus/Kconfig                |   11 +
 drivers/pinctrl/cirrus/Makefile               |    2 +
 drivers/pinctrl/cirrus/pinctrl-cs42l43.c      |  609 +++++
 drivers/soundwire/bus.c                       |   32 +
 drivers/soundwire/bus_type.c                  |   12 +
 drivers/spi/Kconfig                           |    7 +
 drivers/spi/Makefile                          |    1 +
 drivers/spi/spi-cs42l43.c                     |  284 ++
 include/linux/mfd/cs42l43-regs.h              | 1184 +++++++++
 include/linux/mfd/cs42l43.h                   |  102 +
 include/linux/soundwire/sdw.h                 |    9 +
 include/sound/cs42l43.h                       |   17 +
 sound/soc/codecs/Kconfig                      |   16 +
 sound/soc/codecs/Makefile                     |    4 +
 sound/soc/codecs/cs42l43-jack.c               |  946 +++++++
 sound/soc/codecs/cs42l43-sdw.c                |   74 +
 sound/soc/codecs/cs42l43.c                    | 2278 +++++++++++++++++
 sound/soc/codecs/cs42l43.h                    |  131 +
 26 files changed, 7615 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/sound/cirrus,cs42l43.yaml
 create mode 100644 drivers/mfd/cs42l43-i2c.c
 create mode 100644 drivers/mfd/cs42l43-sdw.c
 create mode 100644 drivers/mfd/cs42l43.c
 create mode 100644 drivers/mfd/cs42l43.h
 create mode 100644 drivers/pinctrl/cirrus/pinctrl-cs42l43.c
 create mode 100644 drivers/spi/spi-cs42l43.c
 create mode 100644 include/linux/mfd/cs42l43-regs.h
 create mode 100644 include/linux/mfd/cs42l43.h
 create mode 100644 include/sound/cs42l43.h
 create mode 100644 sound/soc/codecs/cs42l43-jack.c
 create mode 100644 sound/soc/codecs/cs42l43-sdw.c
 create mode 100644 sound/soc/codecs/cs42l43.c
 create mode 100644 sound/soc/codecs/cs42l43.h

--
2.30.2

1 files changed, 21 insertions, 0 deletions

diff --git a/arch/x86/hyperv/hv_init.c b/arch/x86/hyperv/hv_init.c
index 6c04b52f139b..953e280c07c3 100644
--- a/arch/x86/hyperv/hv_init.c
+++ b/arch/x86/hyperv/hv_init.c
@@ -14,6 +14,7 @@
 #include <asm/apic.h>
 #include <asm/desc.h>
 #include <asm/sev.h>
+#include <asm/ibt.h>
 #include <asm/hypervisor.h>
 #include <asm/hyperv-tlfs.h>
 #include <asm/mshyperv.h>
@@ -472,6 +473,26 @@ void __init hyperv_init(void)
 	}
 
 	/*
+	 * Some versions of Hyper-V that provide IBT in guest VMs have a bug
+	 * in that there's no ENDBR64 instruction at the entry to the
+	 * hypercall page. Because hypercalls are invoked via an indirect call
+	 * to the hypercall page, all hypercall attempts fail when IBT is
+	 * enabled, and Linux panics. For such buggy versions, disable IBT.
+	 *
+	 * Fixed versions of Hyper-V always provide ENDBR64 on the hypercall
+	 * page, so if future Linux kernel versions enable IBT for 32-bit
+	 * builds, additional hypercall page hackery will be required here
+	 * to provide an ENDBR32.
+	 */
+#ifdef CONFIG_X86_KERNEL_IBT
+	if (cpu_feature_enabled(X86_FEATURE_IBT) &&
+	    *(u32 *)hv_hypercall_pg != gen_endbr()) {
+		setup_clear_cpu_cap(X86_FEATURE_IBT);
+		pr_warn("Hyper-V: Disabling IBT because of Hyper-V bug\n");
+	}
+#endif
+
+	/*
 	 * hyperv_init() is called before LAPIC is initialized: see
 	 * apic_intr_mode_init() -> x86_platform.apic_post_init() and
 	 * apic_bsp_setup() -> setup_local_APIC(). The direct-mode STIMER