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- // SPDX-License-Identifier: GPL-2.0
- //
- // Copyright (c) 2019 MediaTek Inc.
- #include <asm/barrier.h>
- #include <linux/clk.h>
- #include <linux/dma-mapping.h>
- #include <linux/err.h>
- #include <linux/interrupt.h>
- #include <linux/kernel.h>
- #include <linux/module.h>
- #include <linux/of_address.h>
- #include <linux/of_platform.h>
- #include <linux/of_reserved_mem.h>
- #include <linux/platform_device.h>
- #include <linux/remoteproc.h>
- #include <linux/remoteproc/mtk_scp.h>
- #include <linux/rpmsg/mtk_rpmsg.h>
- #include "mtk_common.h"
- #include "remoteproc_internal.h"
- #define MAX_CODE_SIZE 0x500000
- #define SCP_FW_END 0x7C000
- /**
- * scp_get() - get a reference to SCP.
- *
- * @pdev: the platform device of the module requesting SCP platform
- * device for using SCP API.
- *
- * Return: Return NULL if failed. otherwise reference to SCP.
- **/
- struct mtk_scp *scp_get(struct platform_device *pdev)
- {
- struct device *dev = &pdev->dev;
- struct device_node *scp_node;
- struct platform_device *scp_pdev;
- scp_node = of_parse_phandle(dev->of_node, "mediatek,scp", 0);
- if (!scp_node) {
- dev_err(dev, "can't get SCP node\n");
- return NULL;
- }
- scp_pdev = of_find_device_by_node(scp_node);
- of_node_put(scp_node);
- if (WARN_ON(!scp_pdev)) {
- dev_err(dev, "SCP pdev failed\n");
- return NULL;
- }
- return platform_get_drvdata(scp_pdev);
- }
- EXPORT_SYMBOL_GPL(scp_get);
- /**
- * scp_put() - "free" the SCP
- *
- * @scp: mtk_scp structure from scp_get().
- **/
- void scp_put(struct mtk_scp *scp)
- {
- put_device(scp->dev);
- }
- EXPORT_SYMBOL_GPL(scp_put);
- static void scp_wdt_handler(struct mtk_scp *scp, u32 scp_to_host)
- {
- dev_err(scp->dev, "SCP watchdog timeout! 0x%x", scp_to_host);
- rproc_report_crash(scp->rproc, RPROC_WATCHDOG);
- }
- static void scp_init_ipi_handler(void *data, unsigned int len, void *priv)
- {
- struct mtk_scp *scp = (struct mtk_scp *)priv;
- struct scp_run *run = (struct scp_run *)data;
- scp->run.signaled = run->signaled;
- strscpy(scp->run.fw_ver, run->fw_ver, SCP_FW_VER_LEN);
- scp->run.dec_capability = run->dec_capability;
- scp->run.enc_capability = run->enc_capability;
- wake_up_interruptible(&scp->run.wq);
- }
- static void scp_ipi_handler(struct mtk_scp *scp)
- {
- struct mtk_share_obj __iomem *rcv_obj = scp->recv_buf;
- struct scp_ipi_desc *ipi_desc = scp->ipi_desc;
- u8 tmp_data[SCP_SHARE_BUFFER_SIZE];
- scp_ipi_handler_t handler;
- u32 id = readl(&rcv_obj->id);
- u32 len = readl(&rcv_obj->len);
- if (len > SCP_SHARE_BUFFER_SIZE) {
- dev_err(scp->dev, "ipi message too long (len %d, max %d)", len,
- SCP_SHARE_BUFFER_SIZE);
- return;
- }
- if (id >= SCP_IPI_MAX) {
- dev_err(scp->dev, "No such ipi id = %d\n", id);
- return;
- }
- scp_ipi_lock(scp, id);
- handler = ipi_desc[id].handler;
- if (!handler) {
- dev_err(scp->dev, "No such ipi id = %d\n", id);
- scp_ipi_unlock(scp, id);
- return;
- }
- memcpy_fromio(tmp_data, &rcv_obj->share_buf, len);
- handler(tmp_data, len, ipi_desc[id].priv);
- scp_ipi_unlock(scp, id);
- scp->ipi_id_ack[id] = true;
- wake_up(&scp->ack_wq);
- }
- static int scp_ipi_init(struct mtk_scp *scp)
- {
- size_t send_offset = SCP_FW_END - sizeof(struct mtk_share_obj);
- size_t recv_offset = send_offset - sizeof(struct mtk_share_obj);
- /* shared buffer initialization */
- scp->recv_buf =
- (struct mtk_share_obj __iomem *)(scp->sram_base + recv_offset);
- scp->send_buf =
- (struct mtk_share_obj __iomem *)(scp->sram_base + send_offset);
- memset_io(scp->recv_buf, 0, sizeof(*scp->recv_buf));
- memset_io(scp->send_buf, 0, sizeof(*scp->send_buf));
- return 0;
- }
- static void mt8183_scp_reset_assert(struct mtk_scp *scp)
- {
- u32 val;
- val = readl(scp->reg_base + MT8183_SW_RSTN);
- val &= ~MT8183_SW_RSTN_BIT;
- writel(val, scp->reg_base + MT8183_SW_RSTN);
- }
- static void mt8183_scp_reset_deassert(struct mtk_scp *scp)
- {
- u32 val;
- val = readl(scp->reg_base + MT8183_SW_RSTN);
- val |= MT8183_SW_RSTN_BIT;
- writel(val, scp->reg_base + MT8183_SW_RSTN);
- }
- static void mt8192_scp_reset_assert(struct mtk_scp *scp)
- {
- writel(1, scp->reg_base + MT8192_CORE0_SW_RSTN_SET);
- }
- static void mt8192_scp_reset_deassert(struct mtk_scp *scp)
- {
- writel(1, scp->reg_base + MT8192_CORE0_SW_RSTN_CLR);
- }
- static void mt8183_scp_irq_handler(struct mtk_scp *scp)
- {
- u32 scp_to_host;
- scp_to_host = readl(scp->reg_base + MT8183_SCP_TO_HOST);
- if (scp_to_host & MT8183_SCP_IPC_INT_BIT)
- scp_ipi_handler(scp);
- else
- scp_wdt_handler(scp, scp_to_host);
- /* SCP won't send another interrupt until we set SCP_TO_HOST to 0. */
- writel(MT8183_SCP_IPC_INT_BIT | MT8183_SCP_WDT_INT_BIT,
- scp->reg_base + MT8183_SCP_TO_HOST);
- }
- static void mt8192_scp_irq_handler(struct mtk_scp *scp)
- {
- u32 scp_to_host;
- scp_to_host = readl(scp->reg_base + MT8192_SCP2APMCU_IPC_SET);
- if (scp_to_host & MT8192_SCP_IPC_INT_BIT) {
- scp_ipi_handler(scp);
- /*
- * SCP won't send another interrupt until we clear
- * MT8192_SCP2APMCU_IPC.
- */
- writel(MT8192_SCP_IPC_INT_BIT,
- scp->reg_base + MT8192_SCP2APMCU_IPC_CLR);
- } else {
- scp_wdt_handler(scp, scp_to_host);
- writel(1, scp->reg_base + MT8192_CORE0_WDT_IRQ);
- }
- }
- static irqreturn_t scp_irq_handler(int irq, void *priv)
- {
- struct mtk_scp *scp = priv;
- int ret;
- ret = clk_prepare_enable(scp->clk);
- if (ret) {
- dev_err(scp->dev, "failed to enable clocks\n");
- return IRQ_NONE;
- }
- scp->data->scp_irq_handler(scp);
- clk_disable_unprepare(scp->clk);
- return IRQ_HANDLED;
- }
- static int scp_elf_load_segments(struct rproc *rproc, const struct firmware *fw)
- {
- struct device *dev = &rproc->dev;
- struct elf32_hdr *ehdr;
- struct elf32_phdr *phdr;
- int i, ret = 0;
- const u8 *elf_data = fw->data;
- ehdr = (struct elf32_hdr *)elf_data;
- phdr = (struct elf32_phdr *)(elf_data + ehdr->e_phoff);
- /* go through the available ELF segments */
- for (i = 0; i < ehdr->e_phnum; i++, phdr++) {
- u32 da = phdr->p_paddr;
- u32 memsz = phdr->p_memsz;
- u32 filesz = phdr->p_filesz;
- u32 offset = phdr->p_offset;
- void __iomem *ptr;
- if (phdr->p_type != PT_LOAD)
- continue;
- dev_dbg(dev, "phdr: type %d da 0x%x memsz 0x%x filesz 0x%x\n",
- phdr->p_type, da, memsz, filesz);
- if (filesz > memsz) {
- dev_err(dev, "bad phdr filesz 0x%x memsz 0x%x\n",
- filesz, memsz);
- ret = -EINVAL;
- break;
- }
- if (offset + filesz > fw->size) {
- dev_err(dev, "truncated fw: need 0x%x avail 0x%zx\n",
- offset + filesz, fw->size);
- ret = -EINVAL;
- break;
- }
- /* grab the kernel address for this device address */
- ptr = (void __iomem *)rproc_da_to_va(rproc, da, memsz, NULL);
- if (!ptr) {
- dev_err(dev, "bad phdr da 0x%x mem 0x%x\n", da, memsz);
- ret = -EINVAL;
- break;
- }
- /* put the segment where the remote processor expects it */
- if (phdr->p_filesz)
- scp_memcpy_aligned(ptr, elf_data + phdr->p_offset,
- filesz);
- }
- return ret;
- }
- static int mt8183_scp_before_load(struct mtk_scp *scp)
- {
- /* Clear SCP to host interrupt */
- writel(MT8183_SCP_IPC_INT_BIT, scp->reg_base + MT8183_SCP_TO_HOST);
- /* Reset clocks before loading FW */
- writel(0x0, scp->reg_base + MT8183_SCP_CLK_SW_SEL);
- writel(0x0, scp->reg_base + MT8183_SCP_CLK_DIV_SEL);
- /* Initialize TCM before loading FW. */
- writel(0x0, scp->reg_base + MT8183_SCP_L1_SRAM_PD);
- writel(0x0, scp->reg_base + MT8183_SCP_TCM_TAIL_SRAM_PD);
- /* Turn on the power of SCP's SRAM before using it. */
- writel(0x0, scp->reg_base + MT8183_SCP_SRAM_PDN);
- /*
- * Set I-cache and D-cache size before loading SCP FW.
- * SCP SRAM logical address may change when cache size setting differs.
- */
- writel(MT8183_SCP_CACHE_CON_WAYEN | MT8183_SCP_CACHESIZE_8KB,
- scp->reg_base + MT8183_SCP_CACHE_CON);
- writel(MT8183_SCP_CACHESIZE_8KB, scp->reg_base + MT8183_SCP_DCACHE_CON);
- return 0;
- }
- static void mt8192_power_on_sram(void *addr)
- {
- int i;
- for (i = 31; i >= 0; i--)
- writel(GENMASK(i, 0), addr);
- writel(0, addr);
- }
- static void mt8192_power_off_sram(void *addr)
- {
- int i;
- writel(0, addr);
- for (i = 0; i < 32; i++)
- writel(GENMASK(i, 0), addr);
- }
- static int mt8192_scp_before_load(struct mtk_scp *scp)
- {
- /* clear SPM interrupt, SCP2SPM_IPC_CLR */
- writel(0xff, scp->reg_base + MT8192_SCP2SPM_IPC_CLR);
- writel(1, scp->reg_base + MT8192_CORE0_SW_RSTN_SET);
- /* enable SRAM clock */
- mt8192_power_on_sram(scp->reg_base + MT8192_L2TCM_SRAM_PD_0);
- mt8192_power_on_sram(scp->reg_base + MT8192_L2TCM_SRAM_PD_1);
- mt8192_power_on_sram(scp->reg_base + MT8192_L2TCM_SRAM_PD_2);
- mt8192_power_on_sram(scp->reg_base + MT8192_L1TCM_SRAM_PDN);
- mt8192_power_on_sram(scp->reg_base + MT8192_CPU0_SRAM_PD);
- return 0;
- }
- static int scp_load(struct rproc *rproc, const struct firmware *fw)
- {
- struct mtk_scp *scp = rproc->priv;
- struct device *dev = scp->dev;
- int ret;
- ret = clk_prepare_enable(scp->clk);
- if (ret) {
- dev_err(dev, "failed to enable clocks\n");
- return ret;
- }
- /* Hold SCP in reset while loading FW. */
- scp->data->scp_reset_assert(scp);
- ret = scp->data->scp_before_load(scp);
- if (ret < 0)
- goto leave;
- ret = scp_elf_load_segments(rproc, fw);
- leave:
- clk_disable_unprepare(scp->clk);
- return ret;
- }
- static int scp_start(struct rproc *rproc)
- {
- struct mtk_scp *scp = (struct mtk_scp *)rproc->priv;
- struct device *dev = scp->dev;
- struct scp_run *run = &scp->run;
- int ret;
- ret = clk_prepare_enable(scp->clk);
- if (ret) {
- dev_err(dev, "failed to enable clocks\n");
- return ret;
- }
- run->signaled = false;
- scp->data->scp_reset_deassert(scp);
- ret = wait_event_interruptible_timeout(
- run->wq,
- run->signaled,
- msecs_to_jiffies(2000));
- if (ret == 0) {
- dev_err(dev, "wait SCP initialization timeout!\n");
- ret = -ETIME;
- goto stop;
- }
- if (ret == -ERESTARTSYS) {
- dev_err(dev, "wait SCP interrupted by a signal!\n");
- goto stop;
- }
- clk_disable_unprepare(scp->clk);
- dev_info(dev, "SCP is ready. FW version %s\n", run->fw_ver);
- return 0;
- stop:
- scp->data->scp_reset_assert(scp);
- clk_disable_unprepare(scp->clk);
- return ret;
- }
- static void *scp_da_to_va(struct rproc *rproc, u64 da, size_t len, bool *is_iomem)
- {
- struct mtk_scp *scp = (struct mtk_scp *)rproc->priv;
- int offset;
- if (da < scp->sram_size) {
- offset = da;
- if (offset >= 0 && (offset + len) < scp->sram_size)
- return (void __force *)scp->sram_base + offset;
- } else if (scp->dram_size) {
- offset = da - scp->dma_addr;
- if (offset >= 0 && (offset + len) < scp->dram_size)
- return (void __force *)scp->cpu_addr + offset;
- }
- return NULL;
- }
- static void mt8183_scp_stop(struct mtk_scp *scp)
- {
- /* Disable SCP watchdog */
- writel(0, scp->reg_base + MT8183_WDT_CFG);
- }
- static void mt8192_scp_stop(struct mtk_scp *scp)
- {
- /* Disable SRAM clock */
- mt8192_power_off_sram(scp->reg_base + MT8192_L2TCM_SRAM_PD_0);
- mt8192_power_off_sram(scp->reg_base + MT8192_L2TCM_SRAM_PD_1);
- mt8192_power_off_sram(scp->reg_base + MT8192_L2TCM_SRAM_PD_2);
- mt8192_power_off_sram(scp->reg_base + MT8192_L1TCM_SRAM_PDN);
- mt8192_power_off_sram(scp->reg_base + MT8192_CPU0_SRAM_PD);
- /* Disable SCP watchdog */
- writel(0, scp->reg_base + MT8192_CORE0_WDT_CFG);
- }
- static int scp_stop(struct rproc *rproc)
- {
- struct mtk_scp *scp = (struct mtk_scp *)rproc->priv;
- int ret;
- ret = clk_prepare_enable(scp->clk);
- if (ret) {
- dev_err(scp->dev, "failed to enable clocks\n");
- return ret;
- }
- scp->data->scp_reset_assert(scp);
- scp->data->scp_stop(scp);
- clk_disable_unprepare(scp->clk);
- return 0;
- }
- static const struct rproc_ops scp_ops = {
- .start = scp_start,
- .stop = scp_stop,
- .load = scp_load,
- .da_to_va = scp_da_to_va,
- };
- /**
- * scp_get_device() - get device struct of SCP
- *
- * @scp: mtk_scp structure
- **/
- struct device *scp_get_device(struct mtk_scp *scp)
- {
- return scp->dev;
- }
- EXPORT_SYMBOL_GPL(scp_get_device);
- /**
- * scp_get_rproc() - get rproc struct of SCP
- *
- * @scp: mtk_scp structure
- **/
- struct rproc *scp_get_rproc(struct mtk_scp *scp)
- {
- return scp->rproc;
- }
- EXPORT_SYMBOL_GPL(scp_get_rproc);
- /**
- * scp_get_vdec_hw_capa() - get video decoder hardware capability
- *
- * @scp: mtk_scp structure
- *
- * Return: video decoder hardware capability
- **/
- unsigned int scp_get_vdec_hw_capa(struct mtk_scp *scp)
- {
- return scp->run.dec_capability;
- }
- EXPORT_SYMBOL_GPL(scp_get_vdec_hw_capa);
- /**
- * scp_get_venc_hw_capa() - get video encoder hardware capability
- *
- * @scp: mtk_scp structure
- *
- * Return: video encoder hardware capability
- **/
- unsigned int scp_get_venc_hw_capa(struct mtk_scp *scp)
- {
- return scp->run.enc_capability;
- }
- EXPORT_SYMBOL_GPL(scp_get_venc_hw_capa);
- /**
- * scp_mapping_dm_addr() - Mapping SRAM/DRAM to kernel virtual address
- *
- * @scp: mtk_scp structure
- * @mem_addr: SCP views memory address
- *
- * Mapping the SCP's SRAM address /
- * DMEM (Data Extended Memory) memory address /
- * Working buffer memory address to
- * kernel virtual address.
- *
- * Return: Return ERR_PTR(-EINVAL) if mapping failed,
- * otherwise the mapped kernel virtual address
- **/
- void *scp_mapping_dm_addr(struct mtk_scp *scp, u32 mem_addr)
- {
- void *ptr;
- ptr = scp_da_to_va(scp->rproc, mem_addr, 0, NULL);
- if (!ptr)
- return ERR_PTR(-EINVAL);
- return ptr;
- }
- EXPORT_SYMBOL_GPL(scp_mapping_dm_addr);
- static int scp_map_memory_region(struct mtk_scp *scp)
- {
- int ret;
- ret = of_reserved_mem_device_init(scp->dev);
- /* reserved memory is optional. */
- if (ret == -ENODEV) {
- dev_info(scp->dev, "skipping reserved memory initialization.");
- return 0;
- }
- if (ret) {
- dev_err(scp->dev, "failed to assign memory-region: %d\n", ret);
- return -ENOMEM;
- }
- /* Reserved SCP code size */
- scp->dram_size = MAX_CODE_SIZE;
- scp->cpu_addr = dma_alloc_coherent(scp->dev, scp->dram_size,
- &scp->dma_addr, GFP_KERNEL);
- if (!scp->cpu_addr)
- return -ENOMEM;
- return 0;
- }
- static void scp_unmap_memory_region(struct mtk_scp *scp)
- {
- if (scp->dram_size == 0)
- return;
- dma_free_coherent(scp->dev, scp->dram_size, scp->cpu_addr,
- scp->dma_addr);
- of_reserved_mem_device_release(scp->dev);
- }
- static int scp_register_ipi(struct platform_device *pdev, u32 id,
- ipi_handler_t handler, void *priv)
- {
- struct mtk_scp *scp = platform_get_drvdata(pdev);
- return scp_ipi_register(scp, id, handler, priv);
- }
- static void scp_unregister_ipi(struct platform_device *pdev, u32 id)
- {
- struct mtk_scp *scp = platform_get_drvdata(pdev);
- scp_ipi_unregister(scp, id);
- }
- static int scp_send_ipi(struct platform_device *pdev, u32 id, void *buf,
- unsigned int len, unsigned int wait)
- {
- struct mtk_scp *scp = platform_get_drvdata(pdev);
- return scp_ipi_send(scp, id, buf, len, wait);
- }
- static struct mtk_rpmsg_info mtk_scp_rpmsg_info = {
- .send_ipi = scp_send_ipi,
- .register_ipi = scp_register_ipi,
- .unregister_ipi = scp_unregister_ipi,
- .ns_ipi_id = SCP_IPI_NS_SERVICE,
- };
- static void scp_add_rpmsg_subdev(struct mtk_scp *scp)
- {
- scp->rpmsg_subdev =
- mtk_rpmsg_create_rproc_subdev(to_platform_device(scp->dev),
- &mtk_scp_rpmsg_info);
- if (scp->rpmsg_subdev)
- rproc_add_subdev(scp->rproc, scp->rpmsg_subdev);
- }
- static void scp_remove_rpmsg_subdev(struct mtk_scp *scp)
- {
- if (scp->rpmsg_subdev) {
- rproc_remove_subdev(scp->rproc, scp->rpmsg_subdev);
- mtk_rpmsg_destroy_rproc_subdev(scp->rpmsg_subdev);
- scp->rpmsg_subdev = NULL;
- }
- }
- static int scp_probe(struct platform_device *pdev)
- {
- struct device *dev = &pdev->dev;
- struct device_node *np = dev->of_node;
- struct mtk_scp *scp;
- struct rproc *rproc;
- struct resource *res;
- char *fw_name = "scp.img";
- int ret, i;
- rproc = rproc_alloc(dev,
- np->name,
- &scp_ops,
- fw_name,
- sizeof(*scp));
- if (!rproc) {
- dev_err(dev, "unable to allocate remoteproc\n");
- return -ENOMEM;
- }
- scp = (struct mtk_scp *)rproc->priv;
- scp->rproc = rproc;
- scp->dev = dev;
- scp->data = of_device_get_match_data(dev);
- platform_set_drvdata(pdev, scp);
- res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "sram");
- scp->sram_base = devm_ioremap_resource(dev, res);
- if (IS_ERR((__force void *)scp->sram_base)) {
- dev_err(dev, "Failed to parse and map sram memory\n");
- ret = PTR_ERR((__force void *)scp->sram_base);
- goto free_rproc;
- }
- scp->sram_size = resource_size(res);
- mutex_init(&scp->send_lock);
- for (i = 0; i < SCP_IPI_MAX; i++)
- mutex_init(&scp->ipi_desc[i].lock);
- res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "cfg");
- scp->reg_base = devm_ioremap_resource(dev, res);
- if (IS_ERR((__force void *)scp->reg_base)) {
- dev_err(dev, "Failed to parse and map cfg memory\n");
- ret = PTR_ERR((__force void *)scp->reg_base);
- goto destroy_mutex;
- }
- ret = scp_map_memory_region(scp);
- if (ret)
- goto destroy_mutex;
- scp->clk = devm_clk_get(dev, "main");
- if (IS_ERR(scp->clk)) {
- dev_err(dev, "Failed to get clock\n");
- ret = PTR_ERR(scp->clk);
- goto release_dev_mem;
- }
- ret = clk_prepare_enable(scp->clk);
- if (ret) {
- dev_err(dev, "failed to enable clocks\n");
- goto release_dev_mem;
- }
- ret = scp_ipi_init(scp);
- clk_disable_unprepare(scp->clk);
- if (ret) {
- dev_err(dev, "Failed to init ipi\n");
- goto release_dev_mem;
- }
- /* register SCP initialization IPI */
- ret = scp_ipi_register(scp, SCP_IPI_INIT, scp_init_ipi_handler, scp);
- if (ret) {
- dev_err(dev, "Failed to register IPI_SCP_INIT\n");
- goto release_dev_mem;
- }
- init_waitqueue_head(&scp->run.wq);
- init_waitqueue_head(&scp->ack_wq);
- scp_add_rpmsg_subdev(scp);
- ret = devm_request_threaded_irq(dev, platform_get_irq(pdev, 0), NULL,
- scp_irq_handler, IRQF_ONESHOT,
- pdev->name, scp);
- if (ret) {
- dev_err(dev, "failed to request irq\n");
- goto remove_subdev;
- }
- ret = rproc_add(rproc);
- if (ret)
- goto remove_subdev;
- return 0;
- remove_subdev:
- scp_remove_rpmsg_subdev(scp);
- scp_ipi_unregister(scp, SCP_IPI_INIT);
- release_dev_mem:
- scp_unmap_memory_region(scp);
- destroy_mutex:
- for (i = 0; i < SCP_IPI_MAX; i++)
- mutex_destroy(&scp->ipi_desc[i].lock);
- mutex_destroy(&scp->send_lock);
- free_rproc:
- rproc_free(rproc);
- return ret;
- }
- static int scp_remove(struct platform_device *pdev)
- {
- struct mtk_scp *scp = platform_get_drvdata(pdev);
- int i;
- rproc_del(scp->rproc);
- scp_remove_rpmsg_subdev(scp);
- scp_ipi_unregister(scp, SCP_IPI_INIT);
- scp_unmap_memory_region(scp);
- for (i = 0; i < SCP_IPI_MAX; i++)
- mutex_destroy(&scp->ipi_desc[i].lock);
- mutex_destroy(&scp->send_lock);
- rproc_free(scp->rproc);
- return 0;
- }
- static const struct mtk_scp_of_data mt8183_of_data = {
- .scp_before_load = mt8183_scp_before_load,
- .scp_irq_handler = mt8183_scp_irq_handler,
- .scp_reset_assert = mt8183_scp_reset_assert,
- .scp_reset_deassert = mt8183_scp_reset_deassert,
- .scp_stop = mt8183_scp_stop,
- .host_to_scp_reg = MT8183_HOST_TO_SCP,
- .host_to_scp_int_bit = MT8183_HOST_IPC_INT_BIT,
- };
- static const struct mtk_scp_of_data mt8192_of_data = {
- .scp_before_load = mt8192_scp_before_load,
- .scp_irq_handler = mt8192_scp_irq_handler,
- .scp_reset_assert = mt8192_scp_reset_assert,
- .scp_reset_deassert = mt8192_scp_reset_deassert,
- .scp_stop = mt8192_scp_stop,
- .host_to_scp_reg = MT8192_GIPC_IN_SET,
- .host_to_scp_int_bit = MT8192_HOST_IPC_INT_BIT,
- };
- static const struct of_device_id mtk_scp_of_match[] = {
- { .compatible = "mediatek,mt8183-scp", .data = &mt8183_of_data },
- { .compatible = "mediatek,mt8192-scp", .data = &mt8192_of_data },
- {},
- };
- MODULE_DEVICE_TABLE(of, mtk_scp_of_match);
- static struct platform_driver mtk_scp_driver = {
- .probe = scp_probe,
- .remove = scp_remove,
- .driver = {
- .name = "mtk-scp",
- .of_match_table = mtk_scp_of_match,
- },
- };
- module_platform_driver(mtk_scp_driver);
- MODULE_LICENSE("GPL v2");
- MODULE_DESCRIPTION("MediaTek SCP control driver");
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