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3b08b37755
Add PSIL thread information and enable UDMA support for AM62P and J722S SoC. J722S SoC family is a superset of AM62P, thus common PSIL thread ID map is reused for both devices. For those interested, more details about the SoC can be found in the Technical Reference Manual here: AM62P - https://www.ti.com/lit/pdf/spruj83 J722S - https://www.ti.com/lit/zip/sprujb3 Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com> Signed-off-by: Bryan Brattlof <bb@ti.com> Signed-off-by: Vaishnav Achath <vaishnav.a@ti.com> Reviewed-by: Jai Luthra <j-luthra@ti.com> Link: https://lore.kernel.org/r/20231213081318.26203-1-vaishnav.a@ti.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
110 lines
2.9 KiB
C
110 lines
2.9 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (C) 2019 Texas Instruments Incorporated - http://www.ti.com
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* Author: Peter Ujfalusi <peter.ujfalusi@ti.com>
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/device.h>
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#include <linux/init.h>
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#include <linux/mutex.h>
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#include <linux/of.h>
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#include <linux/sys_soc.h>
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#include "k3-psil-priv.h"
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static DEFINE_MUTEX(ep_map_mutex);
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static const struct psil_ep_map *soc_ep_map;
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static const struct soc_device_attribute k3_soc_devices[] = {
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{ .family = "AM65X", .data = &am654_ep_map },
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{ .family = "J721E", .data = &j721e_ep_map },
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{ .family = "J7200", .data = &j7200_ep_map },
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{ .family = "AM64X", .data = &am64_ep_map },
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{ .family = "J721S2", .data = &j721s2_ep_map },
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{ .family = "AM62X", .data = &am62_ep_map },
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{ .family = "AM62AX", .data = &am62a_ep_map },
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{ .family = "J784S4", .data = &j784s4_ep_map },
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{ .family = "AM62PX", .data = &am62p_ep_map },
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{ .family = "J722S", .data = &am62p_ep_map },
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{ /* sentinel */ }
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};
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struct psil_endpoint_config *psil_get_ep_config(u32 thread_id)
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{
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int i;
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mutex_lock(&ep_map_mutex);
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if (!soc_ep_map) {
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const struct soc_device_attribute *soc;
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soc = soc_device_match(k3_soc_devices);
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if (soc) {
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soc_ep_map = soc->data;
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} else {
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pr_err("PSIL: No compatible machine found for map\n");
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mutex_unlock(&ep_map_mutex);
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return ERR_PTR(-ENOTSUPP);
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}
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pr_debug("%s: Using map for %s\n", __func__, soc_ep_map->name);
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}
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mutex_unlock(&ep_map_mutex);
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if (thread_id & K3_PSIL_DST_THREAD_ID_OFFSET && soc_ep_map->dst) {
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/* check in destination thread map */
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for (i = 0; i < soc_ep_map->dst_count; i++) {
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if (soc_ep_map->dst[i].thread_id == thread_id)
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return &soc_ep_map->dst[i].ep_config;
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}
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}
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thread_id &= ~K3_PSIL_DST_THREAD_ID_OFFSET;
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if (soc_ep_map->src) {
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for (i = 0; i < soc_ep_map->src_count; i++) {
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if (soc_ep_map->src[i].thread_id == thread_id)
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return &soc_ep_map->src[i].ep_config;
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}
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}
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return ERR_PTR(-ENOENT);
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}
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EXPORT_SYMBOL_GPL(psil_get_ep_config);
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int psil_set_new_ep_config(struct device *dev, const char *name,
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struct psil_endpoint_config *ep_config)
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{
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struct psil_endpoint_config *dst_ep_config;
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struct of_phandle_args dma_spec;
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u32 thread_id;
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int index;
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if (!dev || !dev->of_node)
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return -EINVAL;
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index = of_property_match_string(dev->of_node, "dma-names", name);
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if (index < 0)
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return index;
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if (of_parse_phandle_with_args(dev->of_node, "dmas", "#dma-cells",
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index, &dma_spec))
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return -ENOENT;
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thread_id = dma_spec.args[0];
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dst_ep_config = psil_get_ep_config(thread_id);
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if (IS_ERR(dst_ep_config)) {
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pr_err("PSIL: thread ID 0x%04x not defined in map\n",
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thread_id);
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of_node_put(dma_spec.np);
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return PTR_ERR(dst_ep_config);
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}
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memcpy(dst_ep_config, ep_config, sizeof(*dst_ep_config));
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of_node_put(dma_spec.np);
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return 0;
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}
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EXPORT_SYMBOL_GPL(psil_set_new_ep_config);
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MODULE_LICENSE("GPL v2");
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