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Date: Fri, 1 Jun 2018 11:55:26 +0530
From: Sricharan R <sricharan@...eaurora.org>
To: Bjorn Andersson <bjorn.andersson@...aro.org>,
Ohad Ben-Cohen <ohad@...ery.com>,
Sibi Sankar <sibis@...eaurora.org>,
Rohit kumar <rohitkr@...eaurora.org>
Cc: Andy Gross <andy.gross@...aro.org>, linux-kernel@...r.kernel.org,
linux-remoteproc@...r.kernel.org, linux-arm-msm@...r.kernel.org
Subject: Re: [RFC PATCH 3/5] remoteproc: qcom: adsp: Use common q6v5 helpers
Hi Bjorn,
On 5/23/2018 10:50 AM, Bjorn Andersson wrote:
> Migrate the Hexagon V5 PAS (ADSP) driver to using the newly extracted
> helper functions. The use of the handover callback does introduce latent
> disabling of proxy resources. But apart from this there should be no
> change in functionality.
>
> Signed-off-by: Bjorn Andersson <bjorn.andersson@...aro.org>
> ---
> drivers/remoteproc/Kconfig | 1 +
> drivers/remoteproc/qcom_adsp_pil.c | 156 +++++------------------------
> 2 files changed, 28 insertions(+), 129 deletions(-)
>
> diff --git a/drivers/remoteproc/Kconfig b/drivers/remoteproc/Kconfig
> index 63b79ea91a21..d51d155cf8bd 100644
> --- a/drivers/remoteproc/Kconfig
> +++ b/drivers/remoteproc/Kconfig
> @@ -93,6 +93,7 @@ config QCOM_ADSP_PIL
> depends on QCOM_SYSMON || QCOM_SYSMON=n
> select MFD_SYSCON
> select QCOM_MDT_LOADER
> + select QCOM_Q6V5_COMMON
> select QCOM_RPROC_COMMON
> select QCOM_SCM
> help
> diff --git a/drivers/remoteproc/qcom_adsp_pil.c b/drivers/remoteproc/qcom_adsp_pil.c
> index 89a86ce07f99..d4339a6da616 100644
> --- a/drivers/remoteproc/qcom_adsp_pil.c
> +++ b/drivers/remoteproc/qcom_adsp_pil.c
> @@ -31,6 +31,7 @@
> #include <linux/soc/qcom/smem_state.h>
>
> #include "qcom_common.h"
> +#include "qcom_q6v5.h"
> #include "remoteproc_internal.h"
>
> struct adsp_data {
> @@ -48,14 +49,7 @@ struct qcom_adsp {
> struct device *dev;
> struct rproc *rproc;
>
> - 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 qcom_q6v5 q6v5;
>
> struct clk *xo;
> struct clk *aggre2_clk;
> @@ -96,6 +90,8 @@ static int adsp_start(struct rproc *rproc)
> struct qcom_adsp *adsp = (struct qcom_adsp *)rproc->priv;
> int ret;
>
> + qcom_q6v5_prepare(&adsp->q6v5);
> +
> ret = clk_prepare_enable(adsp->xo);
> if (ret)
> return ret;
> @@ -119,16 +115,14 @@ static int adsp_start(struct rproc *rproc)
> goto disable_px_supply;
> }
>
> - ret = wait_for_completion_timeout(&adsp->start_done,
> - msecs_to_jiffies(5000));
> - if (!ret) {
> + ret = qcom_q6v5_wait_for_start(&adsp->q6v5, msecs_to_jiffies(5000));
> + if (ret == -ETIMEDOUT) {
> dev_err(adsp->dev, "start timed out\n");
> qcom_scm_pas_shutdown(adsp->pas_id);
> - ret = -ETIMEDOUT;
> goto disable_px_supply;
> }
>
> - ret = 0;
> + return 0;
>
> disable_px_supply:
> regulator_disable(adsp->px_supply);
> @@ -142,28 +136,34 @@ static int adsp_start(struct rproc *rproc)
> return ret;
> }
>
> +static void qcom_pas_handover(struct qcom_q6v5 *q6v5)
> +{
> + struct qcom_adsp *adsp = container_of(q6v5, struct qcom_adsp, q6v5);
> +
> + regulator_disable(adsp->px_supply);
> + regulator_disable(adsp->cx_supply);
> + clk_disable_unprepare(adsp->aggre2_clk);
> + clk_disable_unprepare(adsp->xo);
> +}
> +
> static int adsp_stop(struct rproc *rproc)
> {
> struct qcom_adsp *adsp = (struct qcom_adsp *)rproc->priv;
> + int handover;
> int ret;
>
> - qcom_smem_state_update_bits(adsp->state,
> - BIT(adsp->stop_bit),
> - BIT(adsp->stop_bit));
> -
> - ret = wait_for_completion_timeout(&adsp->stop_done,
> - msecs_to_jiffies(5000));
> - if (ret == 0)
> + ret = qcom_q6v5_request_stop(&adsp->q6v5);
> + if (ret == -ETIMEDOUT)
> dev_err(adsp->dev, "timed out on wait\n");
>
> - qcom_smem_state_update_bits(adsp->state,
> - BIT(adsp->stop_bit),
> - 0);
> -
> ret = qcom_scm_pas_shutdown(adsp->pas_id);
> if (ret)
> dev_err(adsp->dev, "failed to shutdown: %d\n", ret);
>
> + handover = qcom_q6v5_unprepare(&adsp->q6v5);
> + if (handover)
> + qcom_pas_handover(&adsp->q6v5);
> +
> return ret;
> }
>
> @@ -187,53 +187,6 @@ static const struct rproc_ops adsp_ops = {
> .load = adsp_load,
> };
>
> -static irqreturn_t adsp_wdog_interrupt(int irq, void *dev)
> -{
> - struct qcom_adsp *adsp = dev;
> -
> - rproc_report_crash(adsp->rproc, RPROC_WATCHDOG);
> -
> - return IRQ_HANDLED;
> -}
> -
> -static irqreturn_t adsp_fatal_interrupt(int irq, void *dev)
> -{
> - struct qcom_adsp *adsp = dev;
> - size_t len;
> - char *msg;
> -
> - msg = qcom_smem_get(QCOM_SMEM_HOST_ANY, adsp->crash_reason_smem, &len);
> - if (!IS_ERR(msg) && len > 0 && msg[0])
> - dev_err(adsp->dev, "fatal error received: %s\n", msg);
> -
> - rproc_report_crash(adsp->rproc, RPROC_FATAL_ERROR);
> -
> - return IRQ_HANDLED;
> -}
> -
> -static irqreturn_t adsp_ready_interrupt(int irq, void *dev)
> -{
> - return IRQ_HANDLED;
> -}
> -
> -static irqreturn_t adsp_handover_interrupt(int irq, void *dev)
> -{
> - struct qcom_adsp *adsp = dev;
> -
> - complete(&adsp->start_done);
> -
> - return IRQ_HANDLED;
> -}
> -
> -static irqreturn_t adsp_stop_ack_interrupt(int irq, void *dev)
> -{
> - struct qcom_adsp *adsp = dev;
> -
> - complete(&adsp->stop_done);
> -
> - return IRQ_HANDLED;
> -}
> -
> static int adsp_init_clock(struct qcom_adsp *adsp)
> {
> int ret;
> @@ -272,29 +225,6 @@ static int adsp_init_regulator(struct qcom_adsp *adsp)
> return PTR_ERR_OR_ZERO(adsp->px_supply);
> }
>
> -static int adsp_request_irq(struct qcom_adsp *adsp,
> - 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_ONESHOT,
> - "adsp", adsp);
> - if (ret)
> - dev_err(&pdev->dev, "request %s IRQ failed\n", name);
> -
> - return ret;
> -}
> -
> static int adsp_alloc_memory_region(struct qcom_adsp *adsp)
> {
> struct device_node *node;
> @@ -348,13 +278,9 @@ static int adsp_probe(struct platform_device *pdev)
> adsp->dev = &pdev->dev;
> adsp->rproc = rproc;
> adsp->pas_id = desc->pas_id;
> - adsp->crash_reason_smem = desc->crash_reason_smem;
> adsp->has_aggre2_clk = desc->has_aggre2_clk;
> platform_set_drvdata(pdev, adsp);
>
> - init_completion(&adsp->start_done);
> - init_completion(&adsp->stop_done);
> -
> ret = adsp_alloc_memory_region(adsp);
> if (ret)
> goto free_rproc;
> @@ -367,37 +293,10 @@ static int adsp_probe(struct platform_device *pdev)
> if (ret)
> goto free_rproc;
>
> - ret = adsp_request_irq(adsp, pdev, "wdog", adsp_wdog_interrupt);
> - if (ret < 0)
> - goto free_rproc;
> - adsp->wdog_irq = ret;
> -
> - ret = adsp_request_irq(adsp, pdev, "fatal", adsp_fatal_interrupt);
> - if (ret < 0)
> - goto free_rproc;
> - adsp->fatal_irq = ret;
> -
> - ret = adsp_request_irq(adsp, pdev, "ready", adsp_ready_interrupt);
> - if (ret < 0)
> - goto free_rproc;
> - adsp->ready_irq = ret;
> -
> - ret = adsp_request_irq(adsp, pdev, "handover", adsp_handover_interrupt);
> - if (ret < 0)
> - goto free_rproc;
> - adsp->handover_irq = ret;
> -
> - ret = adsp_request_irq(adsp, pdev, "stop-ack", adsp_stop_ack_interrupt);
> - if (ret < 0)
> - goto free_rproc;
> - adsp->stop_ack_irq = ret;
> -
> - adsp->state = qcom_smem_state_get(&pdev->dev, "stop",
> - &adsp->stop_bit);
> - if (IS_ERR(adsp->state)) {
> - ret = PTR_ERR(adsp->state);
> + ret = qcom_q6v5_init(&adsp->q6v5, pdev, rproc, desc->crash_reason_smem,
> + qcom_pas_handover);
> + if (ret)
> goto free_rproc;
> - }
>
> qcom_add_glink_subdev(rproc, &adsp->glink_subdev);
> qcom_add_smd_subdev(rproc, &adsp->smd_subdev);
> @@ -422,7 +321,6 @@ static int adsp_remove(struct platform_device *pdev)
> {
> struct qcom_adsp *adsp = platform_get_drvdata(pdev);
>
> - qcom_smem_state_put(adsp->state);
Is this change required ?
Otherwise,
reviewed-by: Sricharan R <sricharan@...eaurora.org>
Regards,
Sricharan
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