From: Dudley Du <dudl@cypress.com>
To: Jeremiah Mahler <jmmahler@gmail.com>
CC: "dmitry.torokhov@gmail.com" <dmitry.torokhov@gmail.com>,
        "mark.rutland@arm.com" <mark.rutland@arm.com>,
        "robh+dt@kernel.org" <robh+dt@kernel.org>,
        "rydberg@euromail.se" <rydberg@euromail.se>,
        "bleung@google.com" <bleung@google.com>,
        "devicetree@vger.kernel.org" <devicetree@vger.kernel.org>,
        "linux-input@vger.kernel.org" <linux-input@vger.kernel.org>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: RE: [PATCH 2/7] input: cyapa: add gen6 device module support in
 driver
Thread-Topic: [PATCH 2/7] input: cyapa: add gen6 device module support in
 driver
Thread-Index: AQHQpN0OUFrn3AlKXEO2/fSCHteQZZ2qAn6AgALarhA=
Date: Mon, 15 Jun 2015 02:34:57 +0000
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 <20150613065645.GB5808@hudson.localdomain>
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Jeremiah,

Thanks for the review.

I will correct all the spelling errors you helped pointed out, and I will double check the spell, space and black line issues again.

Thanks,
Dudley

> -----Original Message-----
> From: Jeremiah Mahler [mailto:jmmahler@gmail.com]
> Sent: 2015?6?13? 14:57
> To: Dudley Du
> Cc: dmitry.torokhov@gmail.com; mark.rutland@arm.com; robh+dt@kernel.org;
> rydberg@euromail.se; bleung@google.com; devicetree@vger.kernel.org;
> linux-input@vger.kernel.org; linux-kernel@vger.kernel.org
> Subject: Re: [PATCH 2/7] input: cyapa: add gen6 device module support in driver
>
> Dudley,
>
> A few more spelling errors...
>
> On Fri, Jun 12, 2015 at 02:56:33PM +0800, Dudley Du wrote:
> > Based on the cyapa core, add the gen6 trackpad device's basic functions
> > supported, so gen6 trackpad device can work with kernel input system.
> > And also based on the state parse interface, the cyapa driver can
> > automatically determine the attached is gen3, gen5 or gen6 protocol
> > trackpad device, then set the correct protocol to work with the attached
> > trackpad device.
> > TEST=test on Chromebook.
> >
> > Signed-off-by: Dudley Du <dudl@cypress.com>
> > ---
> >  drivers/input/mouse/Makefile     |   2 +-
> >  drivers/input/mouse/cyapa.c      |  22 ++
> >  drivers/input/mouse/cyapa.h      |  15 +
> >  drivers/input/mouse/cyapa_gen5.c |  69 +++-
> >  drivers/input/mouse/cyapa_gen6.c | 729
> +++++++++++++++++++++++++++++++++++++++
> [...]
> > +static int cyapa_get_pip_fixed_info(struct cyapa *cyapa,
> > +struct pip_fixed_info *pip_info, bool is_bootloader)
> > +{
> > +u8 resp_data[PIP_READ_SYS_INFO_RESP_LENGTH];
> > +int resp_len;
> > +u16 product_family;
> > +int error;
> > +
> > +if (is_bootloader) {
> > +/* Read Bootlaoder Inforamtion to determine Gen5 or Gen6. */
>                        sp: ^^^^^^^^^^^
>
> > +resp_len = sizeof(resp_data);
> > +error = cyapa_i2c_pip_cmd_irq_sync(cyapa,
> > +pip_get_bl_info, sizeof(pip_get_bl_info),
> > +resp_data, &resp_len,
> > +2000, cyapa_sort_tsg_pip_bl_resp_data,
> > +false);
> [...]
> > +
> > +product_family = get_unaligned_le16(&resp_data[7]);
> > +if ((product_family & PIP_PRODUCT_FAMILY_MASK) !=
> > +PIP_PRODUCT_FAMILY_TRACKPAD)
> > +return -EINVAL;
> > +
> > +pip_info->family_id = resp_data[19];
> > +pip_info->silicon_id_low = resp_data[21];
> > +pip_info->silicon_id_high = resp_data[22];
> > +
> > +return 0;
> > +
> > +}
> Why the extra blank line?
>
> > +
> > +int cyapa_pip_state_parse(struct cyapa *cyapa, u8 *reg_data, int len)
> > +{
> > +u8 cmd[] = { 0x01, 0x00};
> > +struct pip_fixed_info pip_info;
> > +u8 resp_data[PIP_HID_DESCRIPTOR_SIZE];
> > +int resp_len;
> > +bool is_bootloader;
> > +int error;
> > +
> > +cyapa->state = CYAPA_STATE_NO_DEVICE;
> > +
> > +/* Try to wake from it deep sleep state if it is. */
> > +cyapa_pip_deep_sleep(cyapa, PIP_DEEP_SLEEP_STATE_ON);
> > +
> > +/* Empty the buffer queue to get fresh data with later commands. */
> > +cyapa_empty_pip_output_data(cyapa, NULL, NULL, NULL);
> [...]
> > +static ssize_t cyapa_gen6_show_baseline(struct device *dev,
> > +struct device_attribute *attr, char *buf)
> > +{
> > +struct cyapa *cyapa = dev_get_drvdata(dev);
> > +u8 data[GEN6_MAX_RX_NUM];
> > +int data_len;
> > +int size = 0;
> > +int i;
> > +int error;
> > +int resume_error;
> > +
> > +if (!cyapa_is_pip_app_mode(cyapa))
> > +return -EBUSY;
> > +
> > +/* 1. Suspend Scanning*/
>                   space? ^^^
>
> > +error = cyapa_pip_suspend_scanning(cyapa);
> > +if (error)
> > +return error;
> > +
> > +/* 2. IDAC and RX Attenuator Calibration Data (Center Frequency). */
> > +data_len = sizeof(data);
> > +error = cyapa_pip_reterive_data_structure(cyapa, 0, data_len,
> > +GEN6_RETERIVE_DATA_ID_RX_ATTENURATOR_IDAC,
> > +data, &data_len);
> > +if (error)
> > +goto resume_scanning;
> > +
> > +size = scnprintf(buf, PAGE_SIZE, "%d %d %d %d %d %d ",
> > +data[0],  /* RX Attenuator Mutal */
> > +data[1],  /* IDAC Mutual */
> > +data[2],  /* RX Attenuator Self RX */
> > +data[3],  /* IDAC Self RX */
> > +data[4],  /* RX Attenuator Self TX */
> > +data[5]  /* IDAC Self TX */
> > +);
> > +
> > +/* 3. Read Attenuator Trim. */
> > +data_len = sizeof(data);
> > +error = cyapa_pip_reterive_data_structure(cyapa, 0, data_len,
> > +GEN6_RETERIVE_DATA_ID_ATTENURATOR_TRIM,
> > +data, &data_len);
> > +if (error)
> > +goto resume_scanning;
> > +
> > +/* set attenuator trim values. */
> > +for (i = 0; i < data_len; i++)
> > +size += scnprintf(buf + size, PAGE_SIZE - size,"%d ", data[i]);
> > +size += scnprintf(buf + size, PAGE_SIZE - size, "\n");
> > +
> > +resume_scanning:
> > +/* 4. Resume Scanning*/
>                   space? ^^^
>
> > +resume_error = cyapa_pip_resume_scanning(cyapa);
> > +if (resume_error || error) {
> > +memset(buf, 0, PAGE_SIZE);
> > +return resume_error ? resume_error : error;
> > +}
> > +
> > +return size;
> > +}
> > +
> > +static int cyapa_gen6_operational_check(struct cyapa *cyapa)
> > +{
> > +struct device *dev = &cyapa->client->dev;
> > +int error;
> > +
> > +if (cyapa->gen != CYAPA_GEN6)
> > +return -ENODEV;
> > +
> > +switch (cyapa->state) {
> > +case CYAPA_STATE_GEN6_BL:
> > +error = cyapa_pip_bl_exit(cyapa);
> > +if (error) {
> > +/* Rry to update trackpad product information. */
>            sp: ^^^
>
> > +cyapa_gen6_bl_read_app_info(cyapa);
> > +goto out;
> > +}
> > +
> > +cyapa->state = CYAPA_STATE_GEN6_APP;
> > +
> > +case CYAPA_STATE_GEN6_APP:
> > +/*
> > + * If trackpad device in deep sleep mode,
> > + * the app command will fail.
> > + * So always try to reset trackpad device to full active when
> > + * the device state is requeried.
> > + */
> [...]
>
> --
> - Jeremiah Mahler

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