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path: root/drivers/remoteproc/qcom_wcnss.c
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Diffstat (limited to 'drivers/remoteproc/qcom_wcnss.c')
-rw-r--r--drivers/remoteproc/qcom_wcnss.c694
1 files changed, 694 insertions, 0 deletions
diff --git a/drivers/remoteproc/qcom_wcnss.c b/drivers/remoteproc/qcom_wcnss.c
new file mode 100644
index 000000000..68f37296b
--- /dev/null
+++ b/drivers/remoteproc/qcom_wcnss.c
@@ -0,0 +1,694 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Qualcomm Wireless Connectivity Subsystem Peripheral Image Loader
+ *
+ * Copyright (C) 2016 Linaro Ltd
+ * Copyright (C) 2014 Sony Mobile Communications AB
+ * Copyright (c) 2012-2013, The Linux Foundation. All rights reserved.
+ */
+
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/firmware.h>
+#include <linux/interrupt.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/io.h>
+#include <linux/of_address.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
+#include <linux/pm_domain.h>
+#include <linux/pm_runtime.h>
+#include <linux/qcom_scm.h>
+#include <linux/regulator/consumer.h>
+#include <linux/remoteproc.h>
+#include <linux/soc/qcom/mdt_loader.h>
+#include <linux/soc/qcom/smem.h>
+#include <linux/soc/qcom/smem_state.h>
+
+#include "qcom_common.h"
+#include "remoteproc_internal.h"
+#include "qcom_pil_info.h"
+#include "qcom_wcnss.h"
+
+#define WCNSS_CRASH_REASON_SMEM 422
+#define WCNSS_FIRMWARE_NAME "wcnss.mdt"
+#define WCNSS_PAS_ID 6
+#define WCNSS_SSCTL_ID 0x13
+
+#define WCNSS_SPARE_NVBIN_DLND BIT(25)
+
+#define WCNSS_PMU_IRIS_XO_CFG BIT(3)
+#define WCNSS_PMU_IRIS_XO_EN BIT(4)
+#define WCNSS_PMU_GC_BUS_MUX_SEL_TOP BIT(5)
+#define WCNSS_PMU_IRIS_XO_CFG_STS BIT(6) /* 1: in progress, 0: done */
+
+#define WCNSS_PMU_IRIS_RESET BIT(7)
+#define WCNSS_PMU_IRIS_RESET_STS BIT(8) /* 1: in progress, 0: done */
+#define WCNSS_PMU_IRIS_XO_READ BIT(9)
+#define WCNSS_PMU_IRIS_XO_READ_STS BIT(10)
+
+#define WCNSS_PMU_XO_MODE_MASK GENMASK(2, 1)
+#define WCNSS_PMU_XO_MODE_19p2 0
+#define WCNSS_PMU_XO_MODE_48 3
+
+#define WCNSS_MAX_PDS 2
+
+struct wcnss_data {
+ size_t pmu_offset;
+ size_t spare_offset;
+
+ const char *pd_names[WCNSS_MAX_PDS];
+ const struct wcnss_vreg_info *vregs;
+ size_t num_vregs, num_pd_vregs;
+};
+
+struct qcom_wcnss {
+ struct device *dev;
+ struct rproc *rproc;
+
+ void __iomem *pmu_cfg;
+ void __iomem *spare_out;
+
+ bool use_48mhz_xo;
+
+ int wdog_irq;
+ int fatal_irq;
+ int ready_irq;
+ int handover_irq;
+ int stop_ack_irq;
+
+ struct qcom_smem_state *state;
+ unsigned stop_bit;
+
+ struct mutex iris_lock;
+ struct qcom_iris *iris;
+
+ struct device *pds[WCNSS_MAX_PDS];
+ size_t num_pds;
+ struct regulator_bulk_data *vregs;
+ size_t num_vregs;
+
+ struct completion start_done;
+ struct completion stop_done;
+
+ phys_addr_t mem_phys;
+ phys_addr_t mem_reloc;
+ void *mem_region;
+ size_t mem_size;
+
+ struct qcom_rproc_subdev smd_subdev;
+ struct qcom_sysmon *sysmon;
+};
+
+static const struct wcnss_data riva_data = {
+ .pmu_offset = 0x28,
+ .spare_offset = 0xb4,
+
+ .vregs = (struct wcnss_vreg_info[]) {
+ { "vddmx", 1050000, 1150000, 0 },
+ { "vddcx", 1050000, 1150000, 0 },
+ { "vddpx", 1800000, 1800000, 0 },
+ },
+ .num_vregs = 3,
+};
+
+static const struct wcnss_data pronto_v1_data = {
+ .pmu_offset = 0x1004,
+ .spare_offset = 0x1088,
+
+ .pd_names = { "mx", "cx" },
+ .vregs = (struct wcnss_vreg_info[]) {
+ { "vddmx", 950000, 1150000, 0 },
+ { "vddcx", .super_turbo = true},
+ { "vddpx", 1800000, 1800000, 0 },
+ },
+ .num_pd_vregs = 2,
+ .num_vregs = 1,
+};
+
+static const struct wcnss_data pronto_v2_data = {
+ .pmu_offset = 0x1004,
+ .spare_offset = 0x1088,
+
+ .pd_names = { "mx", "cx" },
+ .vregs = (struct wcnss_vreg_info[]) {
+ { "vddmx", 1287500, 1287500, 0 },
+ { "vddcx", .super_turbo = true },
+ { "vddpx", 1800000, 1800000, 0 },
+ },
+ .num_pd_vregs = 2,
+ .num_vregs = 1,
+};
+
+static int wcnss_load(struct rproc *rproc, const struct firmware *fw)
+{
+ struct qcom_wcnss *wcnss = (struct qcom_wcnss *)rproc->priv;
+ int ret;
+
+ ret = qcom_mdt_load(wcnss->dev, fw, rproc->firmware, WCNSS_PAS_ID,
+ wcnss->mem_region, wcnss->mem_phys,
+ wcnss->mem_size, &wcnss->mem_reloc);
+ if (ret)
+ return ret;
+
+ qcom_pil_info_store("wcnss", wcnss->mem_phys, wcnss->mem_size);
+
+ return 0;
+}
+
+static void wcnss_indicate_nv_download(struct qcom_wcnss *wcnss)
+{
+ u32 val;
+
+ /* Indicate NV download capability */
+ val = readl(wcnss->spare_out);
+ val |= WCNSS_SPARE_NVBIN_DLND;
+ writel(val, wcnss->spare_out);
+}
+
+static void wcnss_configure_iris(struct qcom_wcnss *wcnss)
+{
+ u32 val;
+
+ /* Clear PMU cfg register */
+ writel(0, wcnss->pmu_cfg);
+
+ val = WCNSS_PMU_GC_BUS_MUX_SEL_TOP | WCNSS_PMU_IRIS_XO_EN;
+ writel(val, wcnss->pmu_cfg);
+
+ /* Clear XO_MODE */
+ val &= ~WCNSS_PMU_XO_MODE_MASK;
+ if (wcnss->use_48mhz_xo)
+ val |= WCNSS_PMU_XO_MODE_48 << 1;
+ else
+ val |= WCNSS_PMU_XO_MODE_19p2 << 1;
+ writel(val, wcnss->pmu_cfg);
+
+ /* Reset IRIS */
+ val |= WCNSS_PMU_IRIS_RESET;
+ writel(val, wcnss->pmu_cfg);
+
+ /* Wait for PMU.iris_reg_reset_sts */
+ while (readl(wcnss->pmu_cfg) & WCNSS_PMU_IRIS_RESET_STS)
+ cpu_relax();
+
+ /* Clear IRIS reset */
+ val &= ~WCNSS_PMU_IRIS_RESET;
+ writel(val, wcnss->pmu_cfg);
+
+ /* Start IRIS XO configuration */
+ val |= WCNSS_PMU_IRIS_XO_CFG;
+ writel(val, wcnss->pmu_cfg);
+
+ /* Wait for XO configuration to finish */
+ while (readl(wcnss->pmu_cfg) & WCNSS_PMU_IRIS_XO_CFG_STS)
+ cpu_relax();
+
+ /* Stop IRIS XO configuration */
+ val &= ~WCNSS_PMU_GC_BUS_MUX_SEL_TOP;
+ val &= ~WCNSS_PMU_IRIS_XO_CFG;
+ writel(val, wcnss->pmu_cfg);
+
+ /* Add some delay for XO to settle */
+ msleep(20);
+}
+
+static int wcnss_start(struct rproc *rproc)
+{
+ struct qcom_wcnss *wcnss = (struct qcom_wcnss *)rproc->priv;
+ int ret, i;
+
+ mutex_lock(&wcnss->iris_lock);
+ if (!wcnss->iris) {
+ dev_err(wcnss->dev, "no iris registered\n");
+ ret = -EINVAL;
+ goto release_iris_lock;
+ }
+
+ for (i = 0; i < wcnss->num_pds; i++) {
+ dev_pm_genpd_set_performance_state(wcnss->pds[i], INT_MAX);
+ ret = pm_runtime_get_sync(wcnss->pds[i]);
+ if (ret < 0) {
+ pm_runtime_put_noidle(wcnss->pds[i]);
+ goto disable_pds;
+ }
+ }
+
+ ret = regulator_bulk_enable(wcnss->num_vregs, wcnss->vregs);
+ if (ret)
+ goto disable_pds;
+
+ ret = qcom_iris_enable(wcnss->iris);
+ if (ret)
+ goto disable_regulators;
+
+ wcnss_indicate_nv_download(wcnss);
+ wcnss_configure_iris(wcnss);
+
+ ret = qcom_scm_pas_auth_and_reset(WCNSS_PAS_ID);
+ if (ret) {
+ dev_err(wcnss->dev,
+ "failed to authenticate image and release reset\n");
+ goto disable_iris;
+ }
+
+ ret = wait_for_completion_timeout(&wcnss->start_done,
+ msecs_to_jiffies(5000));
+ if (wcnss->ready_irq > 0 && ret == 0) {
+ /* We have a ready_irq, but it didn't fire in time. */
+ dev_err(wcnss->dev, "start timed out\n");
+ qcom_scm_pas_shutdown(WCNSS_PAS_ID);
+ ret = -ETIMEDOUT;
+ goto disable_iris;
+ }
+
+ ret = 0;
+
+disable_iris:
+ qcom_iris_disable(wcnss->iris);
+disable_regulators:
+ regulator_bulk_disable(wcnss->num_vregs, wcnss->vregs);
+disable_pds:
+ for (i--; i >= 0; i--) {
+ pm_runtime_put(wcnss->pds[i]);
+ dev_pm_genpd_set_performance_state(wcnss->pds[i], 0);
+ }
+release_iris_lock:
+ mutex_unlock(&wcnss->iris_lock);
+
+ return ret;
+}
+
+static int wcnss_stop(struct rproc *rproc)
+{
+ struct qcom_wcnss *wcnss = (struct qcom_wcnss *)rproc->priv;
+ int ret;
+
+ if (wcnss->state) {
+ qcom_smem_state_update_bits(wcnss->state,
+ BIT(wcnss->stop_bit),
+ BIT(wcnss->stop_bit));
+
+ ret = wait_for_completion_timeout(&wcnss->stop_done,
+ msecs_to_jiffies(5000));
+ if (ret == 0)
+ dev_err(wcnss->dev, "timed out on wait\n");
+
+ qcom_smem_state_update_bits(wcnss->state,
+ BIT(wcnss->stop_bit),
+ 0);
+ }
+
+ ret = qcom_scm_pas_shutdown(WCNSS_PAS_ID);
+ if (ret)
+ dev_err(wcnss->dev, "failed to shutdown: %d\n", ret);
+
+ return ret;
+}
+
+static void *wcnss_da_to_va(struct rproc *rproc, u64 da, size_t len, bool *is_iomem)
+{
+ struct qcom_wcnss *wcnss = (struct qcom_wcnss *)rproc->priv;
+ int offset;
+
+ offset = da - wcnss->mem_reloc;
+ if (offset < 0 || offset + len > wcnss->mem_size)
+ return NULL;
+
+ return wcnss->mem_region + offset;
+}
+
+static const struct rproc_ops wcnss_ops = {
+ .start = wcnss_start,
+ .stop = wcnss_stop,
+ .da_to_va = wcnss_da_to_va,
+ .parse_fw = qcom_register_dump_segments,
+ .load = wcnss_load,
+};
+
+static irqreturn_t wcnss_wdog_interrupt(int irq, void *dev)
+{
+ struct qcom_wcnss *wcnss = dev;
+
+ rproc_report_crash(wcnss->rproc, RPROC_WATCHDOG);
+
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t wcnss_fatal_interrupt(int irq, void *dev)
+{
+ struct qcom_wcnss *wcnss = dev;
+ size_t len;
+ char *msg;
+
+ msg = qcom_smem_get(QCOM_SMEM_HOST_ANY, WCNSS_CRASH_REASON_SMEM, &len);
+ if (!IS_ERR(msg) && len > 0 && msg[0])
+ dev_err(wcnss->dev, "fatal error received: %s\n", msg);
+
+ rproc_report_crash(wcnss->rproc, RPROC_FATAL_ERROR);
+
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t wcnss_ready_interrupt(int irq, void *dev)
+{
+ struct qcom_wcnss *wcnss = dev;
+
+ complete(&wcnss->start_done);
+
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t wcnss_handover_interrupt(int irq, void *dev)
+{
+ /*
+ * XXX: At this point we're supposed to release the resources that we
+ * have been holding on behalf of the WCNSS. Unfortunately this
+ * interrupt comes way before the other side seems to be done.
+ *
+ * So we're currently relying on the ready interrupt firing later then
+ * this and we just disable the resources at the end of wcnss_start().
+ */
+
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t wcnss_stop_ack_interrupt(int irq, void *dev)
+{
+ struct qcom_wcnss *wcnss = dev;
+
+ complete(&wcnss->stop_done);
+
+ return IRQ_HANDLED;
+}
+
+static int wcnss_init_pds(struct qcom_wcnss *wcnss,
+ const char * const pd_names[WCNSS_MAX_PDS])
+{
+ int i, ret;
+
+ for (i = 0; i < WCNSS_MAX_PDS; i++) {
+ if (!pd_names[i])
+ break;
+
+ wcnss->pds[i] = dev_pm_domain_attach_by_name(wcnss->dev, pd_names[i]);
+ if (IS_ERR_OR_NULL(wcnss->pds[i])) {
+ ret = PTR_ERR(wcnss->pds[i]) ? : -ENODATA;
+ for (i--; i >= 0; i--)
+ dev_pm_domain_detach(wcnss->pds[i], false);
+ return ret;
+ }
+ }
+ wcnss->num_pds = i;
+
+ return 0;
+}
+
+static void wcnss_release_pds(struct qcom_wcnss *wcnss)
+{
+ int i;
+
+ for (i = 0; i < wcnss->num_pds; i++)
+ dev_pm_domain_detach(wcnss->pds[i], false);
+}
+
+static int wcnss_init_regulators(struct qcom_wcnss *wcnss,
+ const struct wcnss_vreg_info *info,
+ int num_vregs, int num_pd_vregs)
+{
+ struct regulator_bulk_data *bulk;
+ int ret;
+ int i;
+
+ /*
+ * If attaching the power domains suceeded we can skip requesting
+ * the regulators for the power domains. For old device trees we need to
+ * reserve extra space to manage them through the regulator interface.
+ */
+ if (wcnss->num_pds)
+ info += num_pd_vregs;
+ else
+ num_vregs += num_pd_vregs;
+
+ bulk = devm_kcalloc(wcnss->dev,
+ num_vregs, sizeof(struct regulator_bulk_data),
+ GFP_KERNEL);
+ if (!bulk)
+ return -ENOMEM;
+
+ for (i = 0; i < num_vregs; i++)
+ bulk[i].supply = info[i].name;
+
+ ret = devm_regulator_bulk_get(wcnss->dev, num_vregs, bulk);
+ if (ret)
+ return ret;
+
+ for (i = 0; i < num_vregs; i++) {
+ if (info[i].max_voltage)
+ regulator_set_voltage(bulk[i].consumer,
+ info[i].min_voltage,
+ info[i].max_voltage);
+
+ if (info[i].load_uA)
+ regulator_set_load(bulk[i].consumer, info[i].load_uA);
+ }
+
+ wcnss->vregs = bulk;
+ wcnss->num_vregs = num_vregs;
+
+ return 0;
+}
+
+static int wcnss_request_irq(struct qcom_wcnss *wcnss,
+ struct platform_device *pdev,
+ const char *name,
+ bool optional,
+ irq_handler_t thread_fn)
+{
+ int ret;
+ int irq_number;
+
+ ret = platform_get_irq_byname(pdev, name);
+ if (ret < 0 && optional) {
+ dev_dbg(&pdev->dev, "no %s IRQ defined, ignoring\n", name);
+ return 0;
+ } else if (ret < 0) {
+ dev_err(&pdev->dev, "no %s IRQ defined\n", name);
+ return ret;
+ }
+
+ irq_number = ret;
+
+ ret = devm_request_threaded_irq(&pdev->dev, ret,
+ NULL, thread_fn,
+ IRQF_TRIGGER_RISING | IRQF_ONESHOT,
+ "wcnss", wcnss);
+ if (ret) {
+ dev_err(&pdev->dev, "request %s IRQ failed\n", name);
+ return ret;
+ }
+
+ /* Return the IRQ number if the IRQ was successfully acquired */
+ return irq_number;
+}
+
+static int wcnss_alloc_memory_region(struct qcom_wcnss *wcnss)
+{
+ struct device_node *node;
+ struct resource r;
+ int ret;
+
+ node = of_parse_phandle(wcnss->dev->of_node, "memory-region", 0);
+ if (!node) {
+ dev_err(wcnss->dev, "no memory-region specified\n");
+ return -EINVAL;
+ }
+
+ ret = of_address_to_resource(node, 0, &r);
+ of_node_put(node);
+ if (ret)
+ return ret;
+
+ wcnss->mem_phys = wcnss->mem_reloc = r.start;
+ wcnss->mem_size = resource_size(&r);
+ wcnss->mem_region = devm_ioremap_wc(wcnss->dev, wcnss->mem_phys, wcnss->mem_size);
+ if (!wcnss->mem_region) {
+ dev_err(wcnss->dev, "unable to map memory region: %pa+%zx\n",
+ &r.start, wcnss->mem_size);
+ return -EBUSY;
+ }
+
+ return 0;
+}
+
+static int wcnss_probe(struct platform_device *pdev)
+{
+ const char *fw_name = WCNSS_FIRMWARE_NAME;
+ const struct wcnss_data *data;
+ struct qcom_wcnss *wcnss;
+ struct resource *res;
+ struct rproc *rproc;
+ void __iomem *mmio;
+ int ret;
+
+ data = of_device_get_match_data(&pdev->dev);
+
+ if (!qcom_scm_is_available())
+ return -EPROBE_DEFER;
+
+ if (!qcom_scm_pas_supported(WCNSS_PAS_ID)) {
+ dev_err(&pdev->dev, "PAS is not available for WCNSS\n");
+ return -ENXIO;
+ }
+
+ ret = of_property_read_string(pdev->dev.of_node, "firmware-name",
+ &fw_name);
+ if (ret < 0 && ret != -EINVAL)
+ return ret;
+
+ rproc = rproc_alloc(&pdev->dev, pdev->name, &wcnss_ops,
+ fw_name, sizeof(*wcnss));
+ if (!rproc) {
+ dev_err(&pdev->dev, "unable to allocate remoteproc\n");
+ return -ENOMEM;
+ }
+ rproc_coredump_set_elf_info(rproc, ELFCLASS32, EM_NONE);
+
+ wcnss = (struct qcom_wcnss *)rproc->priv;
+ wcnss->dev = &pdev->dev;
+ wcnss->rproc = rproc;
+ platform_set_drvdata(pdev, wcnss);
+
+ init_completion(&wcnss->start_done);
+ init_completion(&wcnss->stop_done);
+
+ mutex_init(&wcnss->iris_lock);
+
+ res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "pmu");
+ mmio = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(mmio)) {
+ ret = PTR_ERR(mmio);
+ goto free_rproc;
+ }
+
+ ret = wcnss_alloc_memory_region(wcnss);
+ if (ret)
+ goto free_rproc;
+
+ wcnss->pmu_cfg = mmio + data->pmu_offset;
+ wcnss->spare_out = mmio + data->spare_offset;
+
+ /*
+ * We might need to fallback to regulators instead of power domains
+ * for old device trees. Don't report an error in that case.
+ */
+ ret = wcnss_init_pds(wcnss, data->pd_names);
+ if (ret && (ret != -ENODATA || !data->num_pd_vregs))
+ goto free_rproc;
+
+ ret = wcnss_init_regulators(wcnss, data->vregs, data->num_vregs,
+ data->num_pd_vregs);
+ if (ret)
+ goto detach_pds;
+
+ ret = wcnss_request_irq(wcnss, pdev, "wdog", false, wcnss_wdog_interrupt);
+ if (ret < 0)
+ goto detach_pds;
+ wcnss->wdog_irq = ret;
+
+ ret = wcnss_request_irq(wcnss, pdev, "fatal", false, wcnss_fatal_interrupt);
+ if (ret < 0)
+ goto detach_pds;
+ wcnss->fatal_irq = ret;
+
+ ret = wcnss_request_irq(wcnss, pdev, "ready", true, wcnss_ready_interrupt);
+ if (ret < 0)
+ goto detach_pds;
+ wcnss->ready_irq = ret;
+
+ ret = wcnss_request_irq(wcnss, pdev, "handover", true, wcnss_handover_interrupt);
+ if (ret < 0)
+ goto detach_pds;
+ wcnss->handover_irq = ret;
+
+ ret = wcnss_request_irq(wcnss, pdev, "stop-ack", true, wcnss_stop_ack_interrupt);
+ if (ret < 0)
+ goto detach_pds;
+ wcnss->stop_ack_irq = ret;
+
+ if (wcnss->stop_ack_irq) {
+ wcnss->state = devm_qcom_smem_state_get(&pdev->dev, "stop",
+ &wcnss->stop_bit);
+ if (IS_ERR(wcnss->state)) {
+ ret = PTR_ERR(wcnss->state);
+ goto detach_pds;
+ }
+ }
+
+ qcom_add_smd_subdev(rproc, &wcnss->smd_subdev);
+ wcnss->sysmon = qcom_add_sysmon_subdev(rproc, "wcnss", WCNSS_SSCTL_ID);
+ if (IS_ERR(wcnss->sysmon)) {
+ ret = PTR_ERR(wcnss->sysmon);
+ goto detach_pds;
+ }
+
+ wcnss->iris = qcom_iris_probe(&pdev->dev, &wcnss->use_48mhz_xo);
+ if (IS_ERR(wcnss->iris)) {
+ ret = PTR_ERR(wcnss->iris);
+ goto detach_pds;
+ }
+
+ ret = rproc_add(rproc);
+ if (ret)
+ goto remove_iris;
+
+ return 0;
+
+remove_iris:
+ qcom_iris_remove(wcnss->iris);
+detach_pds:
+ wcnss_release_pds(wcnss);
+free_rproc:
+ rproc_free(rproc);
+
+ return ret;
+}
+
+static int wcnss_remove(struct platform_device *pdev)
+{
+ struct qcom_wcnss *wcnss = platform_get_drvdata(pdev);
+
+ qcom_iris_remove(wcnss->iris);
+
+ rproc_del(wcnss->rproc);
+
+ qcom_remove_sysmon_subdev(wcnss->sysmon);
+ qcom_remove_smd_subdev(wcnss->rproc, &wcnss->smd_subdev);
+ wcnss_release_pds(wcnss);
+ rproc_free(wcnss->rproc);
+
+ return 0;
+}
+
+static const struct of_device_id wcnss_of_match[] = {
+ { .compatible = "qcom,riva-pil", &riva_data },
+ { .compatible = "qcom,pronto-v1-pil", &pronto_v1_data },
+ { .compatible = "qcom,pronto-v2-pil", &pronto_v2_data },
+ { },
+};
+MODULE_DEVICE_TABLE(of, wcnss_of_match);
+
+static struct platform_driver wcnss_driver = {
+ .probe = wcnss_probe,
+ .remove = wcnss_remove,
+ .driver = {
+ .name = "qcom-wcnss-pil",
+ .of_match_table = wcnss_of_match,
+ },
+};
+
+module_platform_driver(wcnss_driver);
+
+MODULE_DESCRIPTION("Qualcomm Peripheral Image Loader for Wireless Subsystem");
+MODULE_LICENSE("GPL v2");