lkml.org 
[lkml]   [2017]   [Jun]   [29]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 2/3] drivers: remoteproc: Add Hexagon Q6 - WCSS integrated core driver
Date
IPQ8074 has an integrated Hexagon dsp core Q6v5 and a wireless lan
(Lithium) IP. This patch adds the remoteproc driver to reset, load
and boot Q6 firmware.

Signed-off-by: Sricharan R <sricharan@codeaurora.org>
---
drivers/remoteproc/Kconfig | 13 +
drivers/remoteproc/Makefile | 1 +
drivers/remoteproc/q6v5-wcss.c | 784 +++++++++++++++++++++++++++++++++++++++++
3 files changed, 798 insertions(+)
create mode 100644 drivers/remoteproc/q6v5-wcss.c

diff --git a/drivers/remoteproc/Kconfig b/drivers/remoteproc/Kconfig
index faad69a..a08eb1d 100644
--- a/drivers/remoteproc/Kconfig
+++ b/drivers/remoteproc/Kconfig
@@ -114,6 +114,19 @@ config QCOM_WCNSS_PIL
Say y here to support the Peripheral Image Loader for the Qualcomm
Wireless Connectivity Subsystem.

+config QCOM_Q6V5_WCNSS_PIL
+ tristate "Qualcomm Q6V5-WCNSS Peripheral Image Loader"
+ depends on OF && ARCH_QCOM
+ depends on RPMSG_QCOM_SMD || (COMPILE_TEST && RPMSG_QCOM_SMD=n)
+ depends on QCOM_SMEM
+ depends on REMOTEPROC
+ select QCOM_MDT_LOADER
+ select QCOM_RPROC_COMMON
+ select QCOM_SCM
+ help
+ Say y here to support the Peripheral Image Loader for the Qualcomm
+ Hexagon V5 + Wireless Connectivity Subsystem.
+
config ST_REMOTEPROC
tristate "ST remoteproc support"
depends on ARCH_STI
diff --git a/drivers/remoteproc/Makefile b/drivers/remoteproc/Makefile
index ffc5e43..ebe339f 100644
--- a/drivers/remoteproc/Makefile
+++ b/drivers/remoteproc/Makefile
@@ -15,6 +15,7 @@ obj-$(CONFIG_QCOM_ADSP_PIL) += qcom_adsp_pil.o
obj-$(CONFIG_QCOM_RPROC_COMMON) += qcom_common.o
obj-$(CONFIG_QCOM_Q6V5_PIL) += qcom_q6v5_pil.o
obj-$(CONFIG_QCOM_WCNSS_PIL) += qcom_wcnss_pil.o
+obj-$(CONFIG_QCOM_Q6V5_WCNSS_PIL) += q6v5-wcss.o
qcom_wcnss_pil-y += qcom_wcnss.o
qcom_wcnss_pil-y += qcom_wcnss_iris.o
obj-$(CONFIG_ST_REMOTEPROC) += st_remoteproc.o
diff --git a/drivers/remoteproc/q6v5-wcss.c b/drivers/remoteproc/q6v5-wcss.c
new file mode 100644
index 0000000..52bdc71
--- /dev/null
+++ b/drivers/remoteproc/q6v5-wcss.c
@@ -0,0 +1,784 @@
+/*
+ * Qualcomm q6v5-wcss Peripheral Image Loader
+ *
+ * Copyright (c) 2017, The Linux Foundation. All rights reserved.
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/bitops.h>
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/dma-mapping.h>
+#include <linux/elf.h>
+#include <linux/err.h>
+#include <linux/firmware.h>
+#include <linux/interrupt.h>
+#include <linux/kernel.h>
+#include <linux/mfd/syscon.h>
+#include <linux/module.h>
+#include <linux/of_address.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
+#include <linux/qcom_scm.h>
+#include <linux/regmap.h>
+#include <linux/remoteproc.h>
+#include <linux/reset.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"
+
+#define WCSS_CRASH_REASON_SMEM 421
+#define WCNSS_PAS_ID 6
+#define STOP_ACK_TIMEOUT_MS 10000
+
+#define QDSP6SS_RST_EVB 0x10
+#define QDSP6SS_RESET 0x14
+#define QDSP6SS_DBG_CFG 0x18
+#define QDSP6SS_XO_CBCR 0x38
+#define QDSP6SS_MEM_PWR_CTL 0xb0
+#define QDSP6SS_BHS_STATUS 0x78
+#define TCSR_GLOBAL_CFG0 0x0
+#define TCSR_GLOBAL_CFG1 0x4
+
+#define QDSP6SS_GFMUX_CTL 0x20
+#define QDSP6SS_PWR_CTL 0x30
+#define TCSR_HALTREQ 0x0
+#define TCSR_HALTACK 0x4
+#define TCSR_Q6_HALTREQ 0x0
+#define TCSR_Q6_HALTACK 0x4
+#define SSCAON_CONFIG 0x8
+#define SSCAON_STATUS 0xc
+#define HALTACK BIT(0)
+#define BHS_EN_REST_ACK BIT(0)
+
+struct q6v5 {
+ struct device *dev;
+ struct qcom_rproc_subdev smd_subdev;
+ phys_addr_t mem_phys;
+ size_t mem_size;
+ void *mem_region;
+ void __iomem *q6_base;
+ void __iomem *mpm_base;
+ struct regmap *tcsr;
+ unsigned int halt_gbl;
+ unsigned int halt_q6;
+ unsigned int halt_wcss;
+ struct rproc *rproc;
+ struct completion start_done;
+ struct completion stop_done;
+ struct qcom_smem_state *state;
+ unsigned int stop_bit;
+ unsigned int shutdown_bit;
+ bool running;
+ struct clk **clks;
+ int clk_cnt;
+ struct reset_control *wcss_aon_reset;
+ struct reset_control *wcss_reset;
+ struct reset_control *wcss_q6_reset;
+};
+
+static struct resource_table *q6v5_find_rsc_table(struct rproc *rproc,
+ const struct firmware *fw,
+ int *tablesz)
+{
+ static struct resource_table table = { .ver = 1, };
+
+ *tablesz = sizeof(table);
+ return &table;
+}
+
+static int q6v5_init_clocks(struct device *dev, struct q6v5 *qproc)
+{
+ int i;
+ const char *cname;
+ struct property *prop;
+
+ qproc->clk_cnt = of_property_count_strings(dev->of_node,
+ "clock-names");
+
+ if (!qproc->clk_cnt)
+ return 0;
+
+ qproc->clks = devm_kzalloc(dev, sizeof(*qproc->clks) * qproc->clk_cnt,
+ GFP_KERNEL);
+
+ of_property_for_each_string(dev->of_node, "clock-names", prop, cname) {
+ struct clk *c = devm_clk_get(dev, cname);
+
+ if (IS_ERR_OR_NULL(c)) {
+ if (PTR_ERR(c) != -EPROBE_DEFER)
+ dev_err(dev, "Failed to get %s clock\n", cname);
+
+ return PTR_ERR(c);
+ }
+
+ qproc->clks[i++] = c;
+ }
+
+ return 0;
+}
+
+static int q6v5_clk_enable(struct q6v5 *qproc)
+{
+ int rc;
+ int i;
+
+ for (i = 0; i < qproc->clk_cnt; i++) {
+ rc = clk_prepare_enable(qproc->clks[i]);
+ if (rc)
+ goto err;
+ }
+
+ return 0;
+err:
+ for (i--; i >= 0; i--)
+ clk_disable_unprepare(qproc->clks[i]);
+
+ return rc;
+}
+
+static int wcss_powerdown(struct q6v5 *qproc)
+{
+ unsigned int nretry = 0;
+ unsigned int val = 0;
+ int ret;
+
+ /* Assert WCSS/Q6 HALTREQ - 1 */
+ nretry = 0;
+
+ ret = regmap_update_bits(qproc->tcsr, qproc->halt_wcss + TCSR_HALTREQ,
+ 1, 1);
+ if (ret)
+ return ret;
+
+ while (1) {
+ regmap_read(qproc->tcsr, qproc->halt_wcss + TCSR_HALTACK,
+ &val);
+ if (val & HALTACK)
+ break;
+ mdelay(1);
+ nretry++;
+ if (nretry >= 10) {
+ pr_warn("can't get TCSR haltACK\n");
+ break;
+ }
+ }
+
+ /* Check HALTACK */
+ /* Set MPM_SSCAON_CONFIG 13 - 2 */
+ val = readl(qproc->mpm_base + SSCAON_CONFIG);
+ val |= BIT(13);
+ writel(val, qproc->mpm_base + SSCAON_CONFIG);
+
+ /* Set MPM_SSCAON_CONFIG 15 - 3 */
+ val = readl(qproc->mpm_base + SSCAON_CONFIG);
+ val |= BIT(15);
+ val &= ~(BIT(16));
+ val &= ~(BIT(17));
+ val &= ~(BIT(18));
+ writel(val, qproc->mpm_base + SSCAON_CONFIG);
+
+ /* Set MPM_SSCAON_CONFIG 1 - 4 */
+ val = readl(qproc->mpm_base + SSCAON_CONFIG);
+ val |= BIT(1);
+ writel(val, qproc->mpm_base + SSCAON_CONFIG);
+
+ /* wait for SSCAON_STATUS to be 0x400 - 5 */
+ nretry = 0;
+ while (1) {
+ val = readl(qproc->mpm_base + SSCAON_STATUS);
+ /* ignore bits 16 to 31 */
+ val &= 0xffff;
+ if (val == BIT(10))
+ break;
+ nretry++;
+ mdelay(1);
+ if (nretry == 10) {
+ pr_warn("can't get SSCAON_STATUS\n");
+ break;
+ }
+ }
+
+ /* Enable Q6/WCSS BLOCK ARES - 6 */
+ reset_control_assert(qproc->wcss_aon_reset);
+
+ /* Enable MPM_WCSSAON_CONFIG 13 - 7 */
+ val = readl(qproc->mpm_base + SSCAON_CONFIG);
+ val &= (~(BIT(13)));
+ writel(val, qproc->mpm_base + SSCAON_CONFIG);
+
+ /* Enable A2AB/ACMT/ECHAB ARES - 8 */
+ /* De-assert WCSS/Q6 HALTREQ - 8 */
+ reset_control_assert(qproc->wcss_reset);
+
+ ret = regmap_update_bits(qproc->tcsr, qproc->halt_wcss + TCSR_HALTREQ,
+ 1, 0);
+
+ return ret;
+}
+
+static int q6_powerdown(struct q6v5 *qproc)
+{
+ int i = 0, ret;
+ unsigned int nretry = 0;
+ unsigned int val = 0;
+
+ /* Halt Q6 bus interface - 9*/
+ ret = regmap_update_bits(qproc->tcsr, qproc->halt_q6 + TCSR_Q6_HALTREQ,
+ 1, 1);
+ if (ret)
+ return ret;
+
+ nretry = 0;
+ while (1) {
+ regmap_read(qproc->tcsr, qproc->halt_q6 + TCSR_Q6_HALTACK,
+ &val);
+ if (val & HALTACK)
+ break;
+ mdelay(1);
+ nretry++;
+ if (nretry >= 10) {
+ pr_err("can't get TCSR Q6 haltACK\n");
+ break;
+ }
+ }
+
+ /* Disable Q6 Core clock - 10 */
+ val = readl(qproc->q6_base + QDSP6SS_GFMUX_CTL);
+ val &= (~(BIT(1)));
+ writel(val, qproc->q6_base + QDSP6SS_GFMUX_CTL);
+
+ /* Clamp I/O - 11 */
+ val = readl(qproc->q6_base + QDSP6SS_PWR_CTL);
+ val |= BIT(20);
+ writel(val, qproc->q6_base + QDSP6SS_PWR_CTL);
+
+ /* Clamp WL - 12 */
+ val = readl(qproc->q6_base + QDSP6SS_PWR_CTL);
+ val |= BIT(21);
+ writel(val, qproc->q6_base + QDSP6SS_PWR_CTL);
+
+ /* Clear Erase standby - 13 */
+ val = readl(qproc->q6_base + QDSP6SS_PWR_CTL);
+ val &= (~(BIT(18)));
+ writel(val, qproc->q6_base + QDSP6SS_PWR_CTL);
+
+ /* Clear Sleep RTN - 14 */
+ val = readl(qproc->q6_base + QDSP6SS_PWR_CTL);
+ val &= (~(BIT(19)));
+ writel(val, qproc->q6_base + QDSP6SS_PWR_CTL);
+
+ /* turn off QDSP6 memory foot/head switch one bank at a time - 15*/
+ for (i = 0; i < 20; i++) {
+ val = readl(qproc->q6_base + QDSP6SS_MEM_PWR_CTL);
+ val &= (~(BIT(i)));
+ writel(val, qproc->q6_base + QDSP6SS_MEM_PWR_CTL);
+ mdelay(1);
+ }
+
+ /* Assert QMC memory RTN - 16 */
+ val = readl(qproc->q6_base + QDSP6SS_PWR_CTL);
+ val |= BIT(22);
+ writel(val, qproc->q6_base + QDSP6SS_PWR_CTL);
+
+ /* Turn off BHS - 17 */
+ val = readl(qproc->q6_base + QDSP6SS_PWR_CTL);
+ val &= (~(BIT(24)));
+ writel(val, qproc->q6_base + QDSP6SS_PWR_CTL);
+ udelay(1);
+ /* Wait till BHS Reset is done */
+ nretry = 0;
+ while (1) {
+ val = readl(qproc->q6_base + QDSP6SS_BHS_STATUS);
+ if (!(val & BHS_EN_REST_ACK))
+ break;
+ mdelay(1);
+ nretry++;
+ if (nretry >= 10) {
+ pr_err("BHS_STATUS not OFF\n");
+ break;
+ }
+ }
+
+ /* HALT CLEAR - 18 */
+ ret = regmap_update_bits(qproc->tcsr, qproc->halt_q6 + TCSR_Q6_HALTREQ,
+ 1, 0);
+ if (ret)
+ return ret;
+
+ /* Enable Q6 Block reset - 19 */
+ reset_control_assert(qproc->wcss_q6_reset);
+
+ return 0;
+}
+
+static int q6_rproc_stop(struct rproc *rproc)
+{
+ struct q6v5 *qproc = rproc->priv;
+ int ret = 0;
+
+ qproc->running = false;
+
+ /* WCSS powerdown */
+ qcom_smem_state_update_bits(qproc->state, BIT(qproc->stop_bit),
+ BIT(qproc->stop_bit));
+
+ ret = wait_for_completion_timeout(&qproc->stop_done,
+ msecs_to_jiffies(5000));
+ if (ret == 0) {
+ dev_err(qproc->dev, "timed out on wait\n");
+ return -ETIMEDOUT;
+ }
+
+ qcom_smem_state_update_bits(qproc->state, BIT(qproc->stop_bit), 0);
+
+ ret = wcss_powerdown(qproc);
+ if (ret)
+ return ret;
+
+ /* Q6 Power down */
+ ret = q6_powerdown(qproc);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+static int q6_rproc_start(struct rproc *rproc)
+{
+ struct q6v5 *qproc = rproc->priv;
+ int temp = 19;
+ unsigned long val = 0;
+ unsigned int nretry = 0;
+ int ret = 0;
+
+ ret = q6v5_clk_enable(qproc);
+ if (ret) {
+ dev_err(qproc->dev, "failed to enable clocks\n");
+ return ret;
+ }
+
+ /* Release Q6 and WCSS reset */
+ reset_control_deassert(qproc->wcss_reset);
+ reset_control_deassert(qproc->wcss_q6_reset);
+
+ /* Lithium configuration - clock gating and bus arbitration */
+ ret = regmap_update_bits(qproc->tcsr,
+ qproc->halt_gbl + TCSR_GLOBAL_CFG0,
+ 0x1F, 0x14);
+ if (ret)
+ return ret;
+
+ ret = regmap_update_bits(qproc->tcsr,
+ qproc->halt_gbl + TCSR_GLOBAL_CFG1,
+ 1, 0);
+ if (ret)
+ return ret;
+
+ /* Write bootaddr to EVB so that Q6WCSS will jump there after reset */
+ writel(rproc->bootaddr >> 4, qproc->q6_base + QDSP6SS_RST_EVB);
+ /* Turn on XO clock. It is required for BHS and memory operation */
+ writel(0x1, qproc->q6_base + QDSP6SS_XO_CBCR);
+ /* Turn on BHS */
+ writel(0x1700000, qproc->q6_base + QDSP6SS_PWR_CTL);
+ udelay(1);
+
+ /* Wait till BHS Reset is done */
+ while (1) {
+ val = readl(qproc->q6_base + QDSP6SS_BHS_STATUS);
+ if (val & BHS_EN_REST_ACK)
+ break;
+ mdelay(1);
+ nretry++;
+ if (nretry >= 10) {
+ pr_err("BHS_STATUS not ON\n");
+ break;
+ }
+ }
+
+ /* Put LDO in bypass mode */
+ writel(0x3700000, qproc->q6_base + QDSP6SS_PWR_CTL);
+ /* De-assert QDSP6 complier memory clamp */
+ writel(0x3300000, qproc->q6_base + QDSP6SS_PWR_CTL);
+ /* De-assert memory peripheral sleep and L2 memory standby */
+ writel(0x33c0000, qproc->q6_base + QDSP6SS_PWR_CTL);
+
+ /* turn on QDSP6 memory foot/head switch one bank at a time */
+ while (temp >= 0) {
+ val = readl(qproc->q6_base + QDSP6SS_MEM_PWR_CTL);
+ val = val | 1 << temp;
+ writel(val, qproc->q6_base + QDSP6SS_MEM_PWR_CTL);
+ val = readl(qproc->q6_base + QDSP6SS_MEM_PWR_CTL);
+ mdelay(10);
+ temp -= 1;
+ }
+ /* Remove the QDSP6 core memory word line clamp */
+ writel(0x31FFFFF, qproc->q6_base + QDSP6SS_PWR_CTL);
+ /* Remove QDSP6 I/O clamp */
+ writel(0x30FFFFF, qproc->q6_base + QDSP6SS_PWR_CTL);
+
+ /* Bring Q6 out of reset and stop the core */
+ writel(0x5, qproc->q6_base + QDSP6SS_RESET);
+
+ /* Retain debugger state during next QDSP6 reset */
+ writel(0x0, qproc->q6_base + QDSP6SS_DBG_CFG);
+ /* Turn on the QDSP6 core clock */
+ writel(0x102, qproc->q6_base + QDSP6SS_GFMUX_CTL);
+ /* Enable the core to run */
+ writel(0x4, qproc->q6_base + QDSP6SS_RESET);
+
+ ret = wait_for_completion_timeout(&qproc->start_done,
+ msecs_to_jiffies(5000));
+ if (ret == 0) {
+ dev_err(qproc->dev, "start timed out\n");
+ return -ETIMEDOUT;
+ }
+
+ qproc->running = true;
+
+ return 0;
+}
+
+static struct rproc_ops q6v5_rproc_ops = {
+ .start = q6_rproc_start,
+ .stop = q6_rproc_stop,
+};
+
+static struct rproc_fw_ops q6_fw_ops;
+
+static int q6v5_request_irq(struct q6v5 *qproc,
+ struct platform_device *pdev,
+ const char *name,
+ irq_handler_t thread_fn)
+{
+ int ret;
+
+ ret = platform_get_irq_byname(pdev, name);
+ if (ret < 0) {
+ dev_err(&pdev->dev, "no %s IRQ defined\n", name);
+ return ret;
+ }
+
+ ret = devm_request_threaded_irq(&pdev->dev, ret,
+ NULL, thread_fn,
+ IRQF_TRIGGER_RISING | IRQF_ONESHOT,
+ "q6v5", qproc);
+ if (ret)
+ dev_err(&pdev->dev, "request %s IRQ failed\n", name);
+
+ return ret;
+}
+
+static irqreturn_t q6v5_fatal_interrupt(int irq, void *dev)
+{
+ struct q6v5 *qproc = dev;
+ char *msg;
+ size_t len;
+
+ if (!qproc->running)
+ return IRQ_HANDLED;
+
+ msg = qcom_smem_get(QCOM_SMEM_HOST_ANY, WCSS_CRASH_REASON_SMEM, &len);
+ if (!IS_ERR(msg) && len > 0 && msg[0])
+ dev_err(qproc->dev, "Fatal error from wcss: %s\n", msg);
+ else
+ dev_err(qproc->dev, "Fatal error received no message!\n");
+
+ rproc_report_crash(qproc->rproc, RPROC_FATAL_ERROR);
+
+ if (!IS_ERR(msg))
+ msg[0] = '\0';
+
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t q6v5_handover_interrupt(int irq, void *dev)
+{
+ struct q6v5 *qproc = dev;
+
+ complete(&qproc->start_done);
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t q6v5_stop_ack_interrupt(int irq, void *dev)
+{
+ struct q6v5 *qproc = dev;
+
+ complete(&qproc->stop_done);
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t q6v5_wdog_interrupt(int irq, void *dev)
+{
+ struct q6v5 *qproc = dev;
+ char *msg;
+ size_t len;
+
+ if (!qproc->running) {
+ complete(&qproc->stop_done);
+ return IRQ_HANDLED;
+ }
+
+ msg = qcom_smem_get(QCOM_SMEM_HOST_ANY, WCSS_CRASH_REASON_SMEM, &len);
+ if (!IS_ERR(msg) && len > 0 && msg[0])
+ dev_err(qproc->dev, "Watchdog bite from wcss %s\n", msg);
+ else
+ dev_err(qproc->dev, "Watchdog bit received no message!\n");
+
+ rproc_report_crash(qproc->rproc, RPROC_WATCHDOG);
+
+ if (!IS_ERR(msg))
+ msg[0] = '\0';
+
+ return IRQ_HANDLED;
+}
+
+static int q6v5_load(struct rproc *rproc, const struct firmware *fw)
+{
+ struct q6v5 *qproc = (struct q6v5 *)rproc->priv;
+
+ return qcom_mdt_load(qproc->dev, fw, rproc->firmware, WCNSS_PAS_ID,
+ qproc->mem_region, qproc->mem_phys,
+ qproc->mem_size, false);
+}
+
+static int q6_alloc_memory_region(struct q6v5 *qproc)
+{
+ struct device_node *node;
+ struct resource r;
+ int ret;
+
+ node = of_parse_phandle(qproc->dev->of_node, "memory-region", 0);
+ if (!node) {
+ dev_err(qproc->dev, "no memory-region specified\n");
+ return -EINVAL;
+ }
+
+ ret = of_address_to_resource(node, 0, &r);
+ if (ret)
+ return ret;
+
+ qproc->mem_phys = r.start;
+ qproc->mem_size = resource_size(&r);
+ qproc->mem_region = devm_ioremap_wc(qproc->dev, qproc->mem_phys,
+ qproc->mem_size);
+ if (!qproc->mem_region) {
+ dev_err(qproc->dev, "unable to map memory region: %pa+%zx\n",
+ &r.start, qproc->mem_size);
+ return -EBUSY;
+ }
+
+ return 0;
+}
+
+static int q6v5_init_mem(struct q6v5 *qproc, struct platform_device *pdev)
+{
+ struct of_phandle_args args;
+ struct resource *res;
+ int ret;
+
+ res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
+ "mpm");
+ if (IS_ERR_OR_NULL(res))
+ return -ENODEV;
+
+ qproc->mpm_base = ioremap(res->start, resource_size(res));
+ if (IS_ERR_OR_NULL(qproc->mpm_base))
+ return PTR_ERR(qproc->mpm_base);
+
+ res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
+ "q6");
+ if (IS_ERR_OR_NULL(res)) {
+ ret = -ENODEV;
+ goto free_mpm;
+ }
+
+ qproc->q6_base = ioremap(res->start, resource_size(res));
+ if (IS_ERR_OR_NULL(qproc->q6_base)) {
+ ret = PTR_ERR(qproc->q6_base);
+ goto free_mpm;
+ }
+
+ ret = of_parse_phandle_with_fixed_args(pdev->dev.of_node,
+ "qcom,halt-regs", 3,
+ 0, &args);
+ if (ret < 0)
+ goto free_q6;
+
+ qproc->tcsr = syscon_node_to_regmap(args.np);
+ of_node_put(args.np);
+ if (IS_ERR_OR_NULL(qproc->tcsr)) {
+ ret = PTR_ERR(qproc->tcsr);
+ goto free_q6;
+ }
+
+ qproc->halt_gbl = args.args[0];
+ qproc->halt_q6 = args.args[1];
+ qproc->halt_wcss = args.args[2];
+
+ return 0;
+
+free_q6:
+ iounmap(qproc->q6_base);
+
+free_mpm:
+ iounmap(qproc->mpm_base);
+
+ return ret;
+}
+
+static int q6_rproc_probe(struct platform_device *pdev)
+{
+ struct q6v5 *qproc;
+ struct rproc *rproc;
+ int ret;
+ struct qcom_smem_state *state;
+ unsigned int stop_bit;
+ const char *firmware_name = of_device_get_match_data(&pdev->dev);
+
+ state = qcom_smem_state_get(&pdev->dev, "stop",
+ &stop_bit);
+ if (IS_ERR(state))
+ /* Wait till SMP2P is registered and up */
+ return -EPROBE_DEFER;
+
+ rproc = rproc_alloc(&pdev->dev, pdev->name, &q6v5_rproc_ops,
+ firmware_name,
+ sizeof(*qproc));
+ if (unlikely(!rproc))
+ return -ENOMEM;
+
+ qproc = rproc->priv;
+ qproc->dev = &pdev->dev;
+ qproc->rproc = rproc;
+ rproc->has_iommu = false;
+
+ q6_fw_ops = *rproc->fw_ops;
+ q6_fw_ops.find_rsc_table = q6v5_find_rsc_table;
+ q6_fw_ops.load = q6v5_load;
+
+ q6v5_init_mem(qproc, pdev);
+
+ qproc->wcss_aon_reset = devm_reset_control_get(&pdev->dev,
+ "wcss_aon_reset");
+ if (IS_ERR(qproc->wcss_aon_reset))
+ return PTR_ERR(qproc->wcss_aon_reset);
+
+ qproc->wcss_reset = devm_reset_control_get(&pdev->dev,
+ "wcss_reset");
+ if (IS_ERR(qproc->wcss_reset))
+ return PTR_ERR(qproc->wcss_reset);
+
+ qproc->wcss_q6_reset = devm_reset_control_get(&pdev->dev,
+ "wcss_q6_reset");
+ if (IS_ERR(qproc->wcss_q6_reset))
+ return PTR_ERR(qproc->wcss_q6_reset);
+
+ platform_set_drvdata(pdev, qproc);
+
+ rproc->fw_ops = &q6_fw_ops;
+
+ qproc->state = qcom_smem_state_get(&pdev->dev, "stop",
+ &qproc->stop_bit);
+ if (IS_ERR(qproc->state)) {
+ pr_err("Can't get stop bit status fro SMP2P\n");
+ goto free_rproc;
+ }
+
+ qproc->state = qcom_smem_state_get(&pdev->dev, "shutdown",
+ &qproc->shutdown_bit);
+ if (IS_ERR(qproc->state)) {
+ pr_err("Can't get shutdown bit status fro SMP2P\n");
+ goto free_rproc;
+ }
+
+ ret = q6v5_init_clocks(&pdev->dev, qproc);
+ if (ret < 0) {
+ dev_err(&pdev->dev, "Failed to get active clocks.\n");
+ goto free_rproc;
+ }
+
+ ret = q6v5_request_irq(qproc, pdev, "wdog", q6v5_wdog_interrupt);
+ if (ret < 0)
+ goto free_rproc;
+
+ ret = q6v5_request_irq(qproc, pdev, "fatal", q6v5_fatal_interrupt);
+ if (ret < 0)
+ goto free_rproc;
+
+ ret = q6v5_request_irq(qproc, pdev, "handover",
+ q6v5_handover_interrupt);
+ if (ret < 0)
+ goto free_rproc;
+
+ ret = q6v5_request_irq(qproc, pdev, "stop-ack",
+ q6v5_stop_ack_interrupt);
+ if (ret < 0)
+ goto free_rproc;
+
+ init_completion(&qproc->start_done);
+ init_completion(&qproc->stop_done);
+
+ ret = q6_alloc_memory_region(qproc);
+ if (ret < 0)
+ goto free_rproc;
+
+ qcom_add_smd_subdev(rproc, &qproc->smd_subdev);
+
+ ret = rproc_add(rproc);
+ if (ret)
+ goto free_rproc;
+
+ qproc->running = false;
+
+ return 0;
+
+free_rproc:
+ rproc_put(rproc);
+ return -EIO;
+}
+
+static int q6_rproc_remove(struct platform_device *pdev)
+{
+ struct q6v5 *qproc;
+ struct rproc *rproc;
+
+ qproc = platform_get_drvdata(pdev);
+ rproc = qproc->rproc;
+
+ rproc_del(rproc);
+ rproc_put(rproc);
+
+ return 0;
+}
+
+static const struct of_device_id q6_match_table[] = {
+ { .compatible = "q6v5-wcss-pil", .data = "IPQ8074/q6_fw.mdt" },
+ {}
+};
+MODULE_DEVICE_TABLE(of, q6_match_table);
+
+static struct platform_driver q6_rproc_driver = {
+ .probe = q6_rproc_probe,
+ .remove = q6_rproc_remove,
+ .driver = {
+ .name = "q6v5-wcss",
+ .of_match_table = q6_match_table,
+ .owner = THIS_MODULE,
+ },
+};
+module_platform_driver(q6_rproc_driver);
+
+MODULE_LICENSE("GPL v2");
+MODULE_DESCRIPTION("Qualcomm q6v5-wcss remote proc control driver");
--
QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation
\
 
 \ /
  Last update: 2017-06-29 16:19    [W:0.132 / U:0.612 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site