Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) // SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) // Copyright(c) 2015-17 Intel Corporation.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  * SDW Intel Init Routines
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7)  * Initializes and creates SDW devices based on ACPI and Hardware values
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10) #include <linux/acpi.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11) #include <linux/export.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) #include <linux/interrupt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) #include <linux/io.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) #include <linux/platform_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) #include <linux/pm_runtime.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) #include <linux/soundwire/sdw_intel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) #include "cadence_master.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) #include "intel.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) #define SDW_LINK_TYPE		4 /* from Intel ACPI documentation */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) #define SDW_MAX_LINKS		4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) #define SDW_SHIM_LCAP		0x0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) #define SDW_SHIM_BASE		0x2C000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) #define SDW_ALH_BASE		0x2C800
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) #define SDW_LINK_BASE		0x30000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) #define SDW_LINK_SIZE		0x10000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) static int ctrl_link_mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) module_param_named(sdw_link_mask, ctrl_link_mask, int, 0444);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) MODULE_PARM_DESC(sdw_link_mask, "Intel link mask (one bit per link)");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) static bool is_link_enabled(struct fwnode_handle *fw_node, int i)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) 	struct fwnode_handle *link;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) 	char name[32];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) 	u32 quirk_mask = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) 	/* Find master handle */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) 	snprintf(name, sizeof(name),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) 		 "mipi-sdw-link-%d-subproperties", i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) 	link = fwnode_get_named_child_node(fw_node, name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) 	if (!link)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) 		return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) 	fwnode_property_read_u32(link,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) 				 "intel-quirk-mask",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) 				 &quirk_mask);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) 	if (quirk_mask & SDW_INTEL_QUIRK_MASK_BUS_DISABLE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) 		return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) 	return true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) static int sdw_intel_cleanup(struct sdw_intel_ctx *ctx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 	struct sdw_intel_link_res *link = ctx->links;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) 	u32 link_mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) 	int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 	if (!link)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) 	link_mask = ctx->link_mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 	for (i = 0; i < ctx->count; i++, link++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) 		if (!(link_mask & BIT(i)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 			continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) 		if (link->pdev) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) 			pm_runtime_disable(&link->pdev->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) 			platform_device_unregister(link->pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 		if (!link->clock_stop_quirks)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) 			pm_runtime_put_noidle(link->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) sdw_intel_scan_controller(struct sdw_intel_acpi_info *info)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) 	struct acpi_device *adev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 	int ret, i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) 	u8 count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 	if (acpi_bus_get_device(info->handle, &adev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 	/* Found controller, find links supported */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) 	count = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 	ret = fwnode_property_read_u8_array(acpi_fwnode_handle(adev),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) 					    "mipi-sdw-master-count", &count, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) 	/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) 	 * In theory we could check the number of links supported in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 	 * hardware, but in that step we cannot assume SoundWire IP is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 	 * powered.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 	 *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 	 * In addition, if the BIOS doesn't even provide this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 	 * 'master-count' property then all the inits based on link
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 	 * masks will fail as well.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 	 *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 	 * We will check the hardware capabilities in the startup() step
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 	if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 		dev_err(&adev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 			"Failed to read mipi-sdw-master-count: %d\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 	/* Check count is within bounds */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 	if (count > SDW_MAX_LINKS) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 		dev_err(&adev->dev, "Link count %d exceeds max %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 			count, SDW_MAX_LINKS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 	if (!count) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 		dev_warn(&adev->dev, "No SoundWire links detected\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) 	dev_dbg(&adev->dev, "ACPI reports %d SDW Link devices\n", count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) 	info->count = count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 	info->link_mask = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 	for (i = 0; i < count; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 		if (ctrl_link_mask && !(ctrl_link_mask & BIT(i))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 			dev_dbg(&adev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) 				"Link %d masked, will not be enabled\n", i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 			continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) 		if (!is_link_enabled(acpi_fwnode_handle(adev), i)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 			dev_dbg(&adev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) 				"Link %d not selected in firmware\n", i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) 			continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) 		info->link_mask |= BIT(i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) #define HDA_DSP_REG_ADSPIC2             (0x10)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) #define HDA_DSP_REG_ADSPIS2             (0x14)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) #define HDA_DSP_REG_ADSPIC2_SNDW        BIT(5)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157)  * sdw_intel_enable_irq() - enable/disable Intel SoundWire IRQ
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158)  * @mmio_base: The mmio base of the control register
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159)  * @enable: true if enable
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) void sdw_intel_enable_irq(void __iomem *mmio_base, bool enable)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 	u32 val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 	val = readl(mmio_base + HDA_DSP_REG_ADSPIC2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 	if (enable)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 		val |= HDA_DSP_REG_ADSPIC2_SNDW;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 	else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 		val &= ~HDA_DSP_REG_ADSPIC2_SNDW;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 	writel(val, mmio_base + HDA_DSP_REG_ADSPIC2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) EXPORT_SYMBOL_NS(sdw_intel_enable_irq, SOUNDWIRE_INTEL_INIT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) irqreturn_t sdw_intel_thread(int irq, void *dev_id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 	struct sdw_intel_ctx *ctx = dev_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) 	struct sdw_intel_link_res *link;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) 	list_for_each_entry(link, &ctx->link_list, list)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) 		sdw_cdns_irq(irq, link->cdns);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) 	sdw_intel_enable_irq(ctx->mmio_base, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) 	return IRQ_HANDLED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) EXPORT_SYMBOL_NS(sdw_intel_thread, SOUNDWIRE_INTEL_INIT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) static struct sdw_intel_ctx
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) *sdw_intel_probe_controller(struct sdw_intel_res *res)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 	struct platform_device_info pdevinfo;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) 	struct platform_device *pdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 	struct sdw_intel_link_res *link;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 	struct sdw_intel_ctx *ctx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) 	struct acpi_device *adev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 	struct sdw_slave *slave;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) 	struct list_head *node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) 	struct sdw_bus *bus;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) 	u32 link_mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 	int num_slaves = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) 	int count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 	int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) 	if (!res)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 		return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) 	if (acpi_bus_get_device(res->handle, &adev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) 		return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) 	if (!res->count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) 		return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) 	count = res->count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 	dev_dbg(&adev->dev, "Creating %d SDW Link devices\n", count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 	ctx = devm_kzalloc(&adev->dev, sizeof(*ctx), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 	if (!ctx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) 		return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) 	ctx->count = count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) 	ctx->links = devm_kcalloc(&adev->dev, ctx->count,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) 				  sizeof(*ctx->links), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) 	if (!ctx->links)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) 		return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) 	ctx->count = count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) 	ctx->mmio_base = res->mmio_base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) 	ctx->link_mask = res->link_mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) 	ctx->handle = res->handle;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) 	mutex_init(&ctx->shim_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) 	link = ctx->links;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) 	link_mask = ctx->link_mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) 	INIT_LIST_HEAD(&ctx->link_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) 	/* Create SDW Master devices */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) 	for (i = 0; i < count; i++, link++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) 		if (!(link_mask & BIT(i))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) 			dev_dbg(&adev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) 				"Link %d masked, will not be enabled\n", i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) 			continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) 		link->mmio_base = res->mmio_base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) 		link->registers = res->mmio_base + SDW_LINK_BASE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) 			+ (SDW_LINK_SIZE * i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) 		link->shim = res->mmio_base + SDW_SHIM_BASE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) 		link->alh = res->mmio_base + SDW_ALH_BASE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) 		link->ops = res->ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) 		link->dev = res->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) 		link->clock_stop_quirks = res->clock_stop_quirks;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) 		link->shim_lock = &ctx->shim_lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) 		link->shim_mask = &ctx->shim_mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) 		link->link_mask = link_mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) 		memset(&pdevinfo, 0, sizeof(pdevinfo));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) 		pdevinfo.parent = res->parent;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) 		pdevinfo.name = "intel-sdw";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) 		pdevinfo.id = i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) 		pdevinfo.fwnode = acpi_fwnode_handle(adev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) 		pdevinfo.data = link;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) 		pdevinfo.size_data = sizeof(*link);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) 		pdev = platform_device_register_full(&pdevinfo);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) 		if (IS_ERR(pdev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) 			dev_err(&adev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) 				"platform device creation failed: %ld\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) 				PTR_ERR(pdev));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) 			goto err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) 		link->pdev = pdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) 		link->cdns = platform_get_drvdata(pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) 		list_add_tail(&link->list, &ctx->link_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) 		bus = &link->cdns->bus;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) 		/* Calculate number of slaves */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) 		list_for_each(node, &bus->slaves)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) 			num_slaves++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) 	ctx->ids = devm_kcalloc(&adev->dev, num_slaves,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) 				sizeof(*ctx->ids), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) 	if (!ctx->ids)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) 		goto err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) 	ctx->num_slaves = num_slaves;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) 	i = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) 	list_for_each_entry(link, &ctx->link_list, list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) 		bus = &link->cdns->bus;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) 		list_for_each_entry(slave, &bus->slaves, node) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) 			ctx->ids[i].id = slave->id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) 			ctx->ids[i].link_id = bus->link_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) 			i++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) 	return ctx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) err:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) 	ctx->count = i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) 	sdw_intel_cleanup(ctx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) 	return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) sdw_intel_startup_controller(struct sdw_intel_ctx *ctx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) 	struct acpi_device *adev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) 	struct sdw_intel_link_res *link;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) 	u32 caps;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) 	u32 link_mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) 	int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) 	if (acpi_bus_get_device(ctx->handle, &adev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) 	/* Check SNDWLCAP.LCOUNT */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) 	caps = ioread32(ctx->mmio_base + SDW_SHIM_BASE + SDW_SHIM_LCAP);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) 	caps &= GENMASK(2, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) 	/* Check HW supported vs property value */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) 	if (caps < ctx->count) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) 		dev_err(&adev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) 			"BIOS master count is larger than hardware capabilities\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) 	if (!ctx->links)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) 	link = ctx->links;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) 	link_mask = ctx->link_mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) 	/* Startup SDW Master devices */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) 	for (i = 0; i < ctx->count; i++, link++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) 		if (!(link_mask & BIT(i)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) 			continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) 		intel_master_startup(link->pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) 		if (!link->clock_stop_quirks) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) 			/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) 			 * we need to prevent the parent PCI device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) 			 * from entering pm_runtime suspend, so that
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) 			 * power rails to the SoundWire IP are not
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) 			 * turned off.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) 			 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) 			pm_runtime_get_noresume(link->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) static acpi_status sdw_intel_acpi_cb(acpi_handle handle, u32 level,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) 				     void *cdata, void **return_value)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) 	struct sdw_intel_acpi_info *info = cdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) 	struct acpi_device *adev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) 	acpi_status status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) 	u64 adr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) 	status = acpi_evaluate_integer(handle, METHOD_NAME__ADR, NULL, &adr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) 	if (ACPI_FAILURE(status))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) 		return AE_OK; /* keep going */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) 	if (acpi_bus_get_device(handle, &adev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) 		pr_err("%s: Couldn't find ACPI handle\n", __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) 		return AE_NOT_FOUND;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) 	info->handle = handle;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) 	/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) 	 * On some Intel platforms, multiple children of the HDAS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) 	 * device can be found, but only one of them is the SoundWire
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) 	 * controller. The SNDW device is always exposed with
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) 	 * Name(_ADR, 0x40000000), with bits 31..28 representing the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) 	 * SoundWire link so filter accordingly
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) 	if (FIELD_GET(GENMASK(31, 28), adr) != SDW_LINK_TYPE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) 		return AE_OK; /* keep going */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) 	/* device found, stop namespace walk */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) 	return AE_CTRL_TERMINATE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394)  * sdw_intel_acpi_scan() - SoundWire Intel init routine
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395)  * @parent_handle: ACPI parent handle
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396)  * @info: description of what firmware/DSDT tables expose
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398)  * This scans the namespace and queries firmware to figure out which
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399)  * links to enable. A follow-up use of sdw_intel_probe() and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400)  * sdw_intel_startup() is required for creation of devices and bus
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401)  * startup
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) int sdw_intel_acpi_scan(acpi_handle *parent_handle,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) 			struct sdw_intel_acpi_info *info)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) 	acpi_status status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) 	info->handle = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) 	status = acpi_walk_namespace(ACPI_TYPE_DEVICE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) 				     parent_handle, 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) 				     sdw_intel_acpi_cb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) 				     NULL, info, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) 	if (ACPI_FAILURE(status) || info->handle == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) 		return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) 	return sdw_intel_scan_controller(info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) EXPORT_SYMBOL_NS(sdw_intel_acpi_scan, SOUNDWIRE_INTEL_INIT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421)  * sdw_intel_probe() - SoundWire Intel probe routine
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422)  * @res: resource data
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424)  * This registers a platform device for each Master handled by the controller,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425)  * and SoundWire Master and Slave devices will be created by the platform
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426)  * device probe. All the information necessary is stored in the context, and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427)  * the res argument pointer can be freed after this step.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428)  * This function will be called after sdw_intel_acpi_scan() by SOF probe.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) struct sdw_intel_ctx
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) *sdw_intel_probe(struct sdw_intel_res *res)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) 	return sdw_intel_probe_controller(res);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) EXPORT_SYMBOL_NS(sdw_intel_probe, SOUNDWIRE_INTEL_INIT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438)  * sdw_intel_startup() - SoundWire Intel startup
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439)  * @ctx: SoundWire context allocated in the probe
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441)  * Startup Intel SoundWire controller. This function will be called after
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442)  * Intel Audio DSP is powered up.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) int sdw_intel_startup(struct sdw_intel_ctx *ctx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) 	return sdw_intel_startup_controller(ctx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) EXPORT_SYMBOL_NS(sdw_intel_startup, SOUNDWIRE_INTEL_INIT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450)  * sdw_intel_exit() - SoundWire Intel exit
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451)  * @ctx: SoundWire context allocated in the probe
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453)  * Delete the controller instances created and cleanup
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) void sdw_intel_exit(struct sdw_intel_ctx *ctx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) 	sdw_intel_cleanup(ctx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) EXPORT_SYMBOL_NS(sdw_intel_exit, SOUNDWIRE_INTEL_INIT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) void sdw_intel_process_wakeen_event(struct sdw_intel_ctx *ctx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) 	struct sdw_intel_link_res *link;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) 	u32 link_mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) 	int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) 	if (!ctx->links)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) 		return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) 	link = ctx->links;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) 	link_mask = ctx->link_mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) 	/* Startup SDW Master devices */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) 	for (i = 0; i < ctx->count; i++, link++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) 		if (!(link_mask & BIT(i)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) 			continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) 		intel_master_process_wakeen_event(link->pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) EXPORT_SYMBOL_NS(sdw_intel_process_wakeen_event, SOUNDWIRE_INTEL_INIT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) MODULE_LICENSE("Dual BSD/GPL");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) MODULE_DESCRIPTION("Intel Soundwire Init Library");