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Message-ID: <CAG3jFyt7_UD-12UXNBWHMYK12reWos4x51z98xuihj2JY5hv8g@mail.gmail.com>
Date:   Mon, 8 Feb 2021 19:05:51 +0100
From:   Robert Foss <robert.foss@...aro.org>
To:     Andrey Konovalov <andrey.konovalov@...aro.org>
Cc:     Todor Tomov <todor.too@...il.com>, Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        angelogioacchino.delregno@...ainline.org,
        linux-media <linux-media@...r.kernel.org>,
        MSM <linux-arm-msm@...r.kernel.org>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        AngeloGioacchino Del Regno <kholk11@...il.com>,
        Rob Herring <robh@...nel.org>,
        Sakari Ailus <sakari.ailus@....fi>,
        Nicolas Boichat <drinkcat@...omium.org>,
        Tomasz Figa <tfiga@...omium.org>,
        Azam Sadiq Pasha Kapatrala Syed <akapatra@...cinc.com>,
        Sarvesh Sridutt <Sarvesh.Sridutt@...rtwirelesscompute.com>,
        Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        Jonathan Marek <jonathan@...ek.ca>
Subject: Re: [PATCH v4 11/22] media: camss: Add support for CSIPHY hardware
 version Titan 170

Hey Andrey,

On Mon, 8 Feb 2021 at 19:02, Andrey Konovalov
<andrey.konovalov@...aro.org> wrote:
>
> Hi Robert,
>
> Thank you for your patchset!
>
> On 05.02.2021 13:44, Robert Foss wrote:
> > Add register definitions for version 170 of the Titan architecture
> > and implement support for the CSIPHY subdevice.
> >
> > Signed-off-by: Robert Foss <robert.foss@...aro.org>
> > ---
> >   .../qcom/camss/camss-csiphy-3ph-1-0.c         | 182 ++++++++++++++++--
> >   .../media/platform/qcom/camss/camss-csiphy.c  |  66 +++++--
> >   drivers/media/platform/qcom/camss/camss.c     |  74 +++++++
> >   3 files changed, 290 insertions(+), 32 deletions(-)
> >
> > diff --git a/drivers/media/platform/qcom/camss/camss-csiphy-3ph-1-0.c b/drivers/media/platform/qcom/camss/camss-csiphy-3ph-1-0.c
> > index 97cb9de85031..148b8c50382c 100644
> > --- a/drivers/media/platform/qcom/camss/camss-csiphy-3ph-1-0.c
> > +++ b/drivers/media/platform/qcom/camss/camss-csiphy-3ph-1-0.c
> > @@ -47,6 +47,105 @@
> >   #define CSIPHY_3PH_CMN_CSI_COMMON_CTRL6_SHOW_REV_ID BIT(1)
> >   #define CSIPHY_3PH_CMN_CSI_COMMON_STATUSn(n)        (0x8b0 + 0x4 * (n))
> >
> > +#define CSIPHY_DEFAULT_PARAMS            0
> > +#define CSIPHY_LANE_ENABLE               1
> > +#define CSIPHY_SETTLE_CNT_LOWER_BYTE     2
> > +#define CSIPHY_SETTLE_CNT_HIGHER_BYTE    3
> > +#define CSIPHY_DNP_PARAMS                4
> > +#define CSIPHY_2PH_REGS                  5
> > +#define CSIPHY_3PH_REGS                  6
> > +
> > +struct csiphy_reg_t {
> > +     int32_t  reg_addr;
> > +     int32_t  reg_data;
> > +     int32_t  delay;
> > +     uint32_t csiphy_param_type;
> > +};
> > +
> > +static const struct
> > +csiphy_reg_t lane_regs_sdm845[5][14] = {
>
> <snip>
>
> > @@ -208,6 +294,66 @@ static void csiphy_lanes_enable(struct csiphy_device *csiphy,
> >
> >       val = CSIPHY_3PH_LNn_MISC1_IS_CLKLANE;
> >       writel_relaxed(val, csiphy->base + CSIPHY_3PH_LNn_MISC1(l));
> > +}
> > +
> > +static void csiphy_gen2_config_lanes(struct csiphy_device *csiphy,
> > +                                  u8 settle_cnt)
> > +{
> > +     int i, l;
> > +     u32 val;
> > +
> > +     for (l = 0; l < 5; l++) {
> > +             for (i = 0; i < 14; i++) {
> > +                     struct csiphy_reg_t *r = &lane_regs_sdm845[l][i];
>
> - this line gives me a compilation warning :
> warning: initialization discards ‘const’ qualifier from pointer target type [-Wdiscarded-qualifiers]
>    306 |    struct csiphy_reg_t *r = &lane_regs_sdm845[l][i];
>
> Change it to:
>         const struct csiphy_reg_t *r = &lane_regs_sdm845[l][i];
> ?
>

Yep, I applied that change to my local tree. But didn't thank the bot
for it's graceful contribution.


Rob.

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