soundwire: cadence: make SSP interval programmable (1dd6a17f) · Commits · 戴 / test

drivers/soundwire/cadence_master.c

+4 −3

Original line number	Diff line number	Diff line
		@@ -183,7 +183,6 @@ MODULE_PARM_DESC(cdns_mcp_int_mask, "Cadence MCP IntMask");
		#define CDNS_PDI_CONFIG_PORT GENMASK(4, 0)

		/* Driver defaults */
		#define CDNS_DEFAULT_SSP_INTERVAL 0x18
		#define CDNS_TX_TIMEOUT 2000

		#define CDNS_SCP_RX_FIFOLEVEL 0x2
		@@ -1048,6 +1047,7 @@ static void cdns_init_clock_ctrl(struct sdw_cdns *cdns)
		struct sdw_bus *bus = &cdns->bus;
		struct sdw_master_prop *prop = &bus->prop;
		u32 val;
		u32 ssp_interval;
		int divider;

		/* Set clock divider */
		@@ -1067,8 +1067,9 @@ static void cdns_init_clock_ctrl(struct sdw_cdns *cdns)
		cdns_writel(cdns, CDNS_MCP_FRAME_SHAPE_INIT, val);

		/* Set SSP interval to default value */
		cdns_writel(cdns, CDNS_MCP_SSP_CTRL0, CDNS_DEFAULT_SSP_INTERVAL);
		cdns_writel(cdns, CDNS_MCP_SSP_CTRL1, CDNS_DEFAULT_SSP_INTERVAL);
		ssp_interval = prop->default_frame_rate / SDW_CADENCE_GSYNC_HZ;
		cdns_writel(cdns, CDNS_MCP_SSP_CTRL0, ssp_interval);
		cdns_writel(cdns, CDNS_MCP_SSP_CTRL1, ssp_interval);
		}

		/**

+3 −0

Original line number	Diff line number	Diff line
		@@ -5,6 +5,9 @@
		#ifndef __SDW_CADENCE_H
		#define __SDW_CADENCE_H

		#define SDW_CADENCE_GSYNC_KHZ 4 /* 4 kHz */
		#define SDW_CADENCE_GSYNC_HZ (SDW_CADENCE_GSYNC_KHZ * 1000)

		/**
		* struct sdw_cdns_pdi: PDI (Physical Data Interface) instance
		*