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Message-ID: <4b50f855-e791-b445-f7b8-bc7b783bdc00@linaro.org>
Date: Tue, 25 May 2021 20:35:57 +0300
From: Andrey Konovalov <andrey.konovalov@...aro.org>
To: Jonathan Marek <jonathan@...ek.ca>, linux-arm-msm@...r.kernel.org
Cc: robert.foss@...aro.org, Todor Tomov <todor.too@...il.com>,
Andy Gross <agross@...nel.org>,
Bjorn Andersson <bjorn.andersson@...aro.org>,
Mauro Carvalho Chehab <mchehab@...nel.org>,
"open list:QUALCOMM CAMERA SUBSYSTEM DRIVER"
<linux-media@...r.kernel.org>,
open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 03/17] media: camss: csiphy-3ph: add support for SM8250
CSI DPHY
Hi Jonathan,
Couple more minor issues.
On 25.05.2021 20:19, Andrey Konovalov wrote:
> Hi Jonathan,
>
> Thank you for the patchset!
>
> On 11.05.2021 21:07, Jonathan Marek wrote:
>> Add support for CSIPHY (2PH/DPHY mode) found on SM8250 hardware.
>>
>> Signed-off-by: Jonathan Marek <jonathan@...ek.ca>
>> ---
>> .../qcom/camss/camss-csiphy-3ph-1-0.c | 144 +++++++++++++++++-
>> 1 file changed, 137 insertions(+), 7 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 783b65295d20..61947576ddfb 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
>> @@ -62,6 +62,7 @@ struct csiphy_reg_t {
>> u32 csiphy_param_type;
>> };
>> +/* GEN2 1.0 2PH */
>> static const struct
>> csiphy_reg_t lane_regs_sdm845[5][14] = {
>> {
>> @@ -146,6 +147,121 @@ csiphy_reg_t lane_regs_sdm845[5][14] = {
>> },
>> };
>> +/* GEN2 1.2.1 2PH */
>> +static const struct
>> +csiphy_reg_t lane_regs_sm8250[5][20] = {
>> + {
>> + {0x0030, 0x00, 0x00, CSIPHY_DEFAULT_PARAMS},
>> + {0x0900, 0x05, 0x00, CSIPHY_DEFAULT_PARAMS},
>> + {0x0908, 0x10, 0x00, CSIPHY_DEFAULT_PARAMS},
>> + {0x0904, 0x00, 0x00, CSIPHY_DEFAULT_PARAMS},
>> + {0x0904, 0x07, 0x00, CSIPHY_DEFAULT_PARAMS},
>> + {0x0004, 0x0C, 0x00, CSIPHY_DEFAULT_PARAMS},
>> + {0x002C, 0x01, 0x00, CSIPHY_DEFAULT_PARAMS},
>> + {0x0034, 0x07, 0x00, CSIPHY_DEFAULT_PARAMS},
>> + {0x0010, 0x02, 0x00, CSIPHY_DEFAULT_PARAMS},
>> + {0x001C, 0x08, 0x00, CSIPHY_DEFAULT_PARAMS},
>> + {0x003C, 0xB8, 0x00, CSIPHY_DEFAULT_PARAMS},
>> + {0x0008, 0x10, 0x00, CSIPHY_SETTLE_CNT_LOWER_BYTE},
>> + {0x0000, 0x8D, 0x00, CSIPHY_DEFAULT_PARAMS},
>> + {0x000c, 0x00, 0x00, CSIPHY_DNP_PARAMS},
>> + {0x0038, 0xFE, 0x00, CSIPHY_DEFAULT_PARAMS},
>> + {0x0014, 0x60, 0x00, CSIPHY_DEFAULT_PARAMS},
>> + {0x0028, 0x00, 0x00, CSIPHY_DNP_PARAMS},
>> + {0x0024, 0x00, 0x00, CSIPHY_DNP_PARAMS},
>> + {0x0800, 0x02, 0x00, CSIPHY_DEFAULT_PARAMS},
>> + {0x0884, 0x01, 0x00, CSIPHY_DEFAULT_PARAMS},
>> + },
>> + {
>> + {0x0730, 0x00, 0x00, CSIPHY_DEFAULT_PARAMS},
>> + {0x0C80, 0x05, 0x00, CSIPHY_DEFAULT_PARAMS},
>> + {0x0C88, 0x10, 0x00, CSIPHY_DEFAULT_PARAMS},
>> + {0x0C84, 0x00, 0x00, CSIPHY_DEFAULT_PARAMS},
>> + {0x0C84, 0x07, 0x00, CSIPHY_DEFAULT_PARAMS},
>> + {0x0704, 0x0C, 0x00, CSIPHY_DEFAULT_PARAMS},
>> + {0x072C, 0x01, 0x00, CSIPHY_DEFAULT_PARAMS},
>> + {0x0734, 0x07, 0x00, CSIPHY_DEFAULT_PARAMS},
>> + {0x0710, 0x02, 0x00, CSIPHY_DEFAULT_PARAMS},
>> + {0x071C, 0x08, 0x00, CSIPHY_DEFAULT_PARAMS},
>> + {0x073C, 0xB8, 0x00, CSIPHY_DEFAULT_PARAMS},
>> + {0x0708, 0x10, 0x00, CSIPHY_SETTLE_CNT_LOWER_BYTE},
>> + {0x0700, 0x80, 0x00, CSIPHY_DEFAULT_PARAMS},
>> + {0x070c, 0xA5, 0x00, CSIPHY_DEFAULT_PARAMS},
>> + {0x0738, 0x1F, 0x00, CSIPHY_DEFAULT_PARAMS},
>> + {0x0714, 0x60, 0x00, CSIPHY_DEFAULT_PARAMS},
>> + {0x0728, 0x04, 0x00, CSIPHY_DEFAULT_PARAMS},
>> + {0x0724, 0x00, 0x00, CSIPHY_DNP_PARAMS},
>> + {0x0800, 0x02, 0x00, CSIPHY_DEFAULT_PARAMS},
>> + {0x0884, 0x01, 0x00, CSIPHY_DEFAULT_PARAMS},
>> + },
>> + {
>> + {0x0230, 0x00, 0x00, CSIPHY_DEFAULT_PARAMS},
>> + {0x0A00, 0x05, 0x00, CSIPHY_DEFAULT_PARAMS},
>> + {0x0A08, 0x10, 0x00, CSIPHY_DEFAULT_PARAMS},
>> + {0x0A04, 0x00, 0x00, CSIPHY_DEFAULT_PARAMS},
>> + {0x0A04, 0x07, 0x00, CSIPHY_DEFAULT_PARAMS},
>> + {0x0204, 0x0C, 0x00, CSIPHY_DEFAULT_PARAMS},
>> + {0x022C, 0x01, 0x00, CSIPHY_DEFAULT_PARAMS},
>> + {0x0234, 0x07, 0x00, CSIPHY_DEFAULT_PARAMS},
>> + {0x0210, 0x02, 0x00, CSIPHY_DEFAULT_PARAMS},
>> + {0x021C, 0x08, 0x00, CSIPHY_DEFAULT_PARAMS},
>> + {0x023C, 0xB8, 0x00, CSIPHY_DEFAULT_PARAMS},
>> + {0x0208, 0x10, 0x00, CSIPHY_SETTLE_CNT_LOWER_BYTE},
>> + {0x0200, 0x8D, 0x00, CSIPHY_DEFAULT_PARAMS},
>> + {0x020c, 0x00, 0x00, CSIPHY_DNP_PARAMS},
>> + {0x0238, 0xFE, 0x00, CSIPHY_DEFAULT_PARAMS},
>> + {0x0214, 0x60, 0x00, CSIPHY_DEFAULT_PARAMS},
>> + {0x0228, 0x00, 0x00, CSIPHY_DNP_PARAMS},
>> + {0x0224, 0x00, 0x00, CSIPHY_DNP_PARAMS},
>> + {0x0800, 0x02, 0x00, CSIPHY_DEFAULT_PARAMS},
>> + {0x0884, 0x01, 0x00, CSIPHY_DEFAULT_PARAMS},
>> + },
>> + {
>> + {0x0430, 0x00, 0x00, CSIPHY_DEFAULT_PARAMS},
>> + {0x0B00, 0x05, 0x00, CSIPHY_DEFAULT_PARAMS},
>> + {0x0B08, 0x10, 0x00, CSIPHY_DEFAULT_PARAMS},
>> + {0x0B04, 0x00, 0x00, CSIPHY_DEFAULT_PARAMS},
>> + {0x0B04, 0x07, 0x00, CSIPHY_DEFAULT_PARAMS},
>> + {0x0404, 0x0C, 0x00, CSIPHY_DEFAULT_PARAMS},
>> + {0x042C, 0x01, 0x00, CSIPHY_DEFAULT_PARAMS},
>> + {0x0434, 0x07, 0x00, CSIPHY_DEFAULT_PARAMS},
>> + {0x0410, 0x02, 0x00, CSIPHY_DEFAULT_PARAMS},
>> + {0x041C, 0x08, 0x00, CSIPHY_DEFAULT_PARAMS},
>> + {0x043C, 0xB8, 0x00, CSIPHY_DEFAULT_PARAMS},
>> + {0x0408, 0x10, 0x00, CSIPHY_SETTLE_CNT_LOWER_BYTE},
>> + {0x0400, 0x8D, 0x00, CSIPHY_DEFAULT_PARAMS},
>> + {0x040c, 0x00, 0x00, CSIPHY_DNP_PARAMS},
>> + {0x0438, 0xFE, 0x00, CSIPHY_DEFAULT_PARAMS},
>> + {0x0414, 0x60, 0x00, CSIPHY_DEFAULT_PARAMS},
>> + {0x0428, 0x00, 0x00, CSIPHY_DNP_PARAMS},
>> + {0x0424, 0x00, 0x00, CSIPHY_DNP_PARAMS},
>> + {0x0800, 0x02, 0x00, CSIPHY_DEFAULT_PARAMS},
>> + {0x0884, 0x01, 0x00, CSIPHY_DEFAULT_PARAMS},
>> + },
>> + {
>> + {0x0630, 0x00, 0x00, CSIPHY_DEFAULT_PARAMS},
>> + {0x0C00, 0x05, 0x00, CSIPHY_DEFAULT_PARAMS},
>> + {0x0C08, 0x10, 0x00, CSIPHY_DEFAULT_PARAMS},
>> + {0x0C04, 0x00, 0x00, CSIPHY_DEFAULT_PARAMS},
>> + {0x0C04, 0x07, 0x00, CSIPHY_DEFAULT_PARAMS},
>> + {0x0604, 0x0C, 0x00, CSIPHY_DEFAULT_PARAMS},
>> + {0x062C, 0x01, 0x00, CSIPHY_DEFAULT_PARAMS},
>> + {0x0634, 0x07, 0x00, CSIPHY_DEFAULT_PARAMS},
>> + {0x0610, 0x02, 0x00, CSIPHY_DEFAULT_PARAMS},
>> + {0x061C, 0x08, 0x00, CSIPHY_DEFAULT_PARAMS},
>> + {0x063C, 0xB8, 0x00, CSIPHY_DEFAULT_PARAMS},
>> + {0x0608, 0x10, 0x00, CSIPHY_SETTLE_CNT_LOWER_BYTE},
>> + {0x0600, 0x8D, 0x00, CSIPHY_DEFAULT_PARAMS},
>> + {0x060c, 0x00, 0x00, CSIPHY_DNP_PARAMS},
>> + {0x0638, 0xFE, 0x00, CSIPHY_DEFAULT_PARAMS},
>> + {0x0614, 0x60, 0x00, CSIPHY_DEFAULT_PARAMS},
>> + {0x0628, 0x00, 0x00, CSIPHY_DNP_PARAMS},
>> + {0x0624, 0x00, 0x00, CSIPHY_DNP_PARAMS},
>> + {0x0800, 0x02, 0x00, CSIPHY_DEFAULT_PARAMS},
>> + {0x0884, 0x01, 0x00, CSIPHY_DEFAULT_PARAMS},
>> + },
>> +};
>> +
>> static void csiphy_hw_version_read(struct csiphy_device *csiphy,
>> struct device *dev)
>> {
>> @@ -298,13 +414,23 @@ static void csiphy_gen1_config_lanes(struct csiphy_device *csiphy,
>> static void csiphy_gen2_config_lanes(struct csiphy_device *csiphy,
>> u8 settle_cnt)
>> {
>> - int i, l;
>> - u32 val;
>> + const struct csiphy_reg_t *r;
>> + int i, l, array_size;
>> + u32 val, lane_enable;
lane_enable is not used in this patch ("warning: unused variable ‘lane_enable’").
>> +
>> + switch (csiphy->camss->version) {
This switch statement doesn't have the "default:" clause which leads to several
warnings of "enumeration value ‘CAMSS_8x16’ not handled in switch" kind.
Thanks,
Andrey
>> + case CAMSS_845:
>> + r = &lane_regs_sdm845[0][0];
>> + array_size = ARRAY_SIZE(lane_regs_sdm845[0]);
>> + break;
>> + case CAMSS_8250:
>
> CAMSS_8250 is only introduced in "[PATCH 16_17] media: camss: add support for SM8250 camss",
> and this breaks bisecting.
>
> Thanks,
> Andrey
>
>> + r = &lane_regs_sm8250[0][0];
>> + array_size = ARRAY_SIZE(lane_regs_sm8250[0]);
>> + break;
>> + }
>> for (l = 0; l < 5; l++) {
>> - for (i = 0; i < 14; i++) {
>> - const struct csiphy_reg_t *r = &lane_regs_sdm845[l][i];
>> -
>> + for (i = 0; i < array_size; i++, r++) {
>> switch (r->csiphy_param_type) {
>> case CSIPHY_SETTLE_CNT_LOWER_BYTE:
>> val = settle_cnt & 0xff;
>> @@ -331,7 +457,10 @@ static void csiphy_lanes_enable(struct csiphy_device *csiphy,
>> settle_cnt = csiphy_settle_cnt_calc(link_freq, csiphy->timer_clk_rate);
>> - val = BIT(c->clk.pos);
>> + if (csiphy->camss->version == CAMSS_8250)
>> + val = BIT(7);
>> + else
>> + val = BIT(c->clk.pos);
>> for (i = 0; i < c->num_data; i++)
>> val |= BIT(c->data[i].pos * 2);
>> @@ -349,7 +478,8 @@ static void csiphy_lanes_enable(struct csiphy_device *csiphy,
>> if (csiphy->camss->version == CAMSS_8x16 ||
>> csiphy->camss->version == CAMSS_8x96)
>> csiphy_gen1_config_lanes(csiphy, cfg, settle_cnt);
>> - else if (csiphy->camss->version == CAMSS_845)
>> + else if (csiphy->camss->version == CAMSS_845 ||
>> + csiphy->camss->version == CAMSS_8250)
>> csiphy_gen2_config_lanes(csiphy, settle_cnt);
>> /* IRQ_MASK registers - disable all interrupts */
>>
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