Merge series "Add RZ/G2L Sound support" from Biju Das <biju.das.jz@bp.renesas.com>:

This patch series aims to add ASoC support on RZ/G2L SoC's.

It is based on the work done by Chris Brandt for RZ/A ASoC driver.

v4->v5
 * Moved validation of sample bits in hw_params
 * Removed validation of frame bits as it is redundant
 * split the rz_ssi_start_stop function into rz_ssi_start and rz_ssi_stop.
 * remove the spin_lock around rz_ssi_stream_init.
 * Updated dmas description and removed fixes as it is an enhancement
   now.
 * updated ssi_start functions with setting fifo thresholds
   and ssi_stop function with cancel all dma txn.
v3->v4:
 * Updated the subject line as per style for the subsystem.
 * Removed select SND_SIMPLE_CARD from Kconfig
 * Added C++ comments for copyright and driver description.
 * Moved validation of channels in hw_params
 * removed asm issue reported by bot as well as Mark
 * replaced master/slave macros with provider/consumer macros
 * Improved locking and added more null pointer checks.
v2->v3:
 * Fixed the dependency on KCONFIG
 * Merged the binding patch with dma feature added
 * Updated dt binding example with encoded #dma-cells value.
 * Improved Error handling in probe function
 * Removed the passing legacy channel configuration parameters from
   dmaengine_slave_config function
 * started using dma_request_chan instead of deprecated
   dma_request_slave_channel
 * Removed SoC dtsi and config patches from this series. Will send it later.
v1->v2:
 * Rebased to latest rc kernel

Biju Das (3):
  ASoC: sh: Add RZ/G2L SSIF-2 driver
  ASoC: dt-bindings: renesas,rz-ssi: Update slave dma channel
    configuration parameters
  ASoC: sh: rz-ssi: Add SSI DMAC support

 .../bindings/sound/renesas,rz-ssi.yaml        |   22 +-
 sound/soc/sh/Kconfig                          |    6 +
 sound/soc/sh/Makefile                         |    4 +
 sound/soc/sh/rz-ssi.c                         | 1063 +++++++++++++++++
 4 files changed, 1093 insertions(+), 2 deletions(-)
 create mode 100644 sound/soc/sh/rz-ssi.c

--
2.17.1

Documentation/devicetree/bindings/sound/renesas,rz-ssi.yaml

@@ -48,6 +48,24 @@ properties:
   dmas:
     minItems: 1
     maxItems: 2
+    description:
+      The first cell represents a phandle to dmac
+      The second cell specifies the encoded MID/RID values of the SSI port
+      connected to the DMA client and the slave channel configuration
+      parameters.
+      bits[0:9]   - Specifies MID/RID value of a SSI channel as below
+                    MID/RID value of SSI rx0 = 0x256
+                    MID/RID value of SSI tx0 = 0x255
+                    MID/RID value of SSI rx1 = 0x25a
+                    MID/RID value of SSI tx1 = 0x259
+                    MID/RID value of SSI rt2 = 0x25f
+                    MID/RID value of SSI rx3 = 0x262
+                    MID/RID value of SSI tx3 = 0x261
+      bit[10]     - HIEN = 1, Detects a request in response to the rising edge
+                    of the signal
+      bit[11]     - LVL = 0, Detects based on the edge
+      bits[12:14] - AM = 2, Bus cycle mode
+      bit[15]     - TM = 0, Single transfer mode
 
   dma-names:
     oneOf:
@@ -93,8 +111,8 @@ examples:
             clock-names = "ssi", "ssi_sfr", "audio_clk1", "audio_clk2";
             power-domains = <&cpg>;
             resets = <&cpg R9A07G044_SSI0_RST_M2_REG>;
-            dmas = <&dmac 0x255>,
-                   <&dmac 0x256>;
+            dmas = <&dmac 0x2655>,
+                   <&dmac 0x2656>;
             dma-names = "tx", "rx";
             #sound-dai-cells = <0>;
     };

sound/soc/sh/Kconfig

@@ -45,6 +45,12 @@ config SND_SOC_RCAR
 	help
 	  This option enables R-Car SRU/SCU/SSIU/SSI sound support
 
+config SND_SOC_RZ
+	tristate "RZ/G2L series SSIF-2 support"
+	depends on ARCH_R9A07G044 || COMPILE_TEST
+	help
+	  This option enables RZ/G2L SSIF-2 sound support.
+
 ##
 ## Boards
 ##

sound/soc/sh/Makefile

@@ -22,3 +22,7 @@ snd-soc-migor-objs		:= migor.o
 
 obj-$(CONFIG_SND_SH7760_AC97)	+= snd-soc-sh7760-ac97.o
 obj-$(CONFIG_SND_SIU_MIGOR)	+= snd-soc-migor.o
+
+# RZ/G2L
+snd-soc-rz-ssi-objs		:= rz-ssi.o
+obj-$(CONFIG_SND_SOC_RZ)	+= snd-soc-rz-ssi.o