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Message-id: <5681DEF3.7010903@samsung.com>
Date: Tue, 29 Dec 2015 10:16:35 +0900
From: Krzysztof Kozlowski <k.kozlowski@...sung.com>
To: Chanwoo Choi <cw00.choi@...sung.com>, linux-kernel@...r.kernel.org
Cc: myungjoo.ham@...sung.com
Subject: Re: [PATCH] extcon: Add the EXTCON_CHG_USB_SDP to support SDP charing
port
On 29.12.2015 09:37, Chanwoo Choi wrote:
> This patch adds the new EXTCON_CHG_USB_SDP connector to support SDP (Standard
> Downstream Port) USB charging port. The commit 11eecf910bd8 ("extcon: Modify
> the id and name of external connector") add the new EXTCON_CHG_USB_SDP
> connector which support the both data transfer and usb charging at the same
> time.
>
> Cc: Krzysztof Kozlowski <k.kozlowski@...sung.com>
> Cc: MyungJoo Ham <myungjoo.ham@...sung.com>
> Signed-off-by: Chanwoo Choi <cw00.choi@...sung.com>
> ---
> drivers/extcon/extcon-max14577.c | 3 +++
> drivers/extcon/extcon-max77693.c | 12 ++++++++++--
> drivers/extcon/extcon-max77843.c | 3 +++
> drivers/extcon/extcon-max8997.c | 3 +++
> drivers/extcon/extcon-rt8973a.c | 4 ++++
> drivers/extcon/extcon-sm5502.c | 4 ++++
> 6 files changed, 27 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/extcon/extcon-max14577.c b/drivers/extcon/extcon-max14577.c
> index b30ab97ce75f..852a7112f451 100644
> --- a/drivers/extcon/extcon-max14577.c
> +++ b/drivers/extcon/extcon-max14577.c
> @@ -150,6 +150,7 @@ enum max14577_muic_acc_type {
>
> static const unsigned int max14577_extcon_cable[] = {
> EXTCON_USB,
> + EXTCON_CHG_USB_SDP,
> EXTCON_CHG_USB_DCP,
> EXTCON_CHG_USB_FAST,
> EXTCON_CHG_USB_SLOW,
> @@ -454,6 +455,8 @@ static int max14577_muic_chg_handler(struct max14577_muic_info *info)
> return ret;
>
> extcon_set_cable_state_(info->edev, EXTCON_USB, attached);
> + extcon_set_cable_state_(info->edev, EXTCON_CHG_USB_SDP,
> + attached);
> break;
> case MAX14577_CHARGER_TYPE_DEDICATED_CHG:
> extcon_set_cable_state_(info->edev, EXTCON_CHG_USB_DCP,
> diff --git a/drivers/extcon/extcon-max77693.c b/drivers/extcon/extcon-max77693.c
> index fdf8f5d4d4e9..b472f2405534 100644
> --- a/drivers/extcon/extcon-max77693.c
> +++ b/drivers/extcon/extcon-max77693.c
> @@ -204,6 +204,7 @@ enum max77693_muic_acc_type {
> static const unsigned int max77693_extcon_cable[] = {
> EXTCON_USB,
> EXTCON_USB_HOST,
> + EXTCON_CHG_USB_SDP,
> EXTCON_CHG_USB_DCP,
> EXTCON_CHG_USB_FAST,
> EXTCON_CHG_USB_SLOW,
> @@ -512,8 +513,11 @@ static int max77693_muic_dock_handler(struct max77693_muic_info *info,
> break;
> case MAX77693_MUIC_ADC_AV_CABLE_NOLOAD: /* Dock-Audio */
> dock_id = EXTCON_DOCK;
> - if (!attached)
> + if (!attached) {
> extcon_set_cable_state_(info->edev, EXTCON_USB, false);
> + extcon_set_cable_state_(info->edev, EXTCON_CHG_USB_SDP,
> + false);
> + }
> break;
> default:
> dev_err(info->dev, "failed to detect %s dock device\n",
> @@ -601,6 +605,8 @@ static int max77693_muic_adc_ground_handler(struct max77693_muic_info *info)
> if (ret < 0)
> return ret;
> extcon_set_cable_state_(info->edev, EXTCON_USB, attached);
> + extcon_set_cable_state_(info->edev, EXTCON_CHG_USB_SDP,
> + attached);
> break;
> case MAX77693_MUIC_GND_MHL:
> case MAX77693_MUIC_GND_MHL_VB:
> @@ -830,6 +836,8 @@ static int max77693_muic_chg_handler(struct max77693_muic_info *info)
> */
> extcon_set_cable_state_(info->edev, EXTCON_USB,
> attached);
> + extcon_set_cable_state_(info->edev, EXTCON_CHG_USB_SDP,
> + attached);
>
> if (!cable_attached)
> extcon_set_cable_state_(info->edev, EXTCON_DOCK,
> @@ -897,7 +905,7 @@ static int max77693_muic_chg_handler(struct max77693_muic_info *info)
> if (ret < 0)
> return ret;
>
> - extcon_set_cable_state_(info->edev, EXTCON_USB,
> + extcon_set_cable_state_(info->edev, EXTCON_CHG_USB_SDP,
> attached);
Why for MAX77693_CHARGER_TYPE_USB you are not setting the EXTCON_USB
type? From the description and max14577 code I would suspect that you
want to set both: USB and SDP.
> break;
> case MAX77693_CHARGER_TYPE_DEDICATED_CHG:
> diff --git a/drivers/extcon/extcon-max77843.c b/drivers/extcon/extcon-max77843.c
> index 74dfb7f4f277..7bbc30097771 100644
> --- a/drivers/extcon/extcon-max77843.c
> +++ b/drivers/extcon/extcon-max77843.c
> @@ -122,6 +122,7 @@ enum max77843_muic_charger_type {
> static const unsigned int max77843_extcon_cable[] = {
> EXTCON_USB,
> EXTCON_USB_HOST,
> + EXTCON_CHG_USB_SDP,
> EXTCON_CHG_USB_DCP,
> EXTCON_CHG_USB_CDP,
> EXTCON_CHG_USB_FAST,
> @@ -486,6 +487,8 @@ static int max77843_muic_chg_handler(struct max77843_muic_info *info)
> return ret;
>
> extcon_set_cable_state_(info->edev, EXTCON_USB, attached);
> + extcon_set_cable_state_(info->edev, EXTCON_CHG_USB_SDP,
> + attached);
> break;
> case MAX77843_MUIC_CHG_DOWNSTREAM:
> ret = max77843_muic_set_path(info,
> diff --git a/drivers/extcon/extcon-max8997.c b/drivers/extcon/extcon-max8997.c
> index b2b13b3dce14..79263421b075 100644
> --- a/drivers/extcon/extcon-max8997.c
> +++ b/drivers/extcon/extcon-max8997.c
> @@ -148,6 +148,7 @@ struct max8997_muic_info {
> static const unsigned int max8997_extcon_cable[] = {
> EXTCON_USB,
> EXTCON_USB_HOST,
> + EXTCON_CHG_USB_SDP,
> EXTCON_CHG_USB_DCP,
> EXTCON_CHG_USB_FAST,
> EXTCON_CHG_USB_SLOW,
> @@ -484,6 +485,8 @@ static int max8997_muic_chg_handler(struct max8997_muic_info *info)
> max8997_muic_handle_usb(info,
> MAX8997_USB_DEVICE, attached);
> }
> + extcon_set_cable_state_(info->edev, EXTCON_CHG_USB_SDP,
> + attached);
I am missing something. If this is MAX8997_CHARGER_TYPE_USB but not
MAX8997_MUIC_ADC_OPEN then you will set only SDP, not USB. Aren't they
symmetric?
You aren't setting the SDP in ADC handler, only in charger handler. Why?
Best regards,
Krzysztof
> break;
> case MAX8997_CHARGER_TYPE_DOWNSTREAM_PORT:
> extcon_set_cable_state_(info->edev, EXTCON_CHG_USB_CDP,
> diff --git a/drivers/extcon/extcon-rt8973a.c b/drivers/extcon/extcon-rt8973a.c
> index 7635a8eaf4c6..97e074d70eca 100644
> --- a/drivers/extcon/extcon-rt8973a.c
> +++ b/drivers/extcon/extcon-rt8973a.c
> @@ -93,6 +93,7 @@ static struct reg_data rt8973a_reg_data[] = {
> static const unsigned int rt8973a_extcon_cable[] = {
> EXTCON_USB,
> EXTCON_USB_HOST,
> + EXTCON_CHG_USB_SDP,
> EXTCON_CHG_USB_DCP,
> EXTCON_JIG,
> EXTCON_NONE,
> @@ -398,6 +399,9 @@ static int rt8973a_muic_cable_handler(struct rt8973a_muic_info *info,
>
> /* Change the state of external accessory */
> extcon_set_cable_state_(info->edev, id, attached);
> + if (id == EXTCON_USB)
> + extcon_set_cable_state_(info->edev, EXTCON_CHG_USB_SDP,
> + attached);
>
> return 0;
> }
> diff --git a/drivers/extcon/extcon-sm5502.c b/drivers/extcon/extcon-sm5502.c
> index 571de2e6e7c4..df769a17e736 100644
> --- a/drivers/extcon/extcon-sm5502.c
> +++ b/drivers/extcon/extcon-sm5502.c
> @@ -95,6 +95,7 @@ static struct reg_data sm5502_reg_data[] = {
> static const unsigned int sm5502_extcon_cable[] = {
> EXTCON_USB,
> EXTCON_USB_HOST,
> + EXTCON_CHG_USB_SDP,
> EXTCON_CHG_USB_DCP,
> EXTCON_NONE,
> };
> @@ -411,6 +412,9 @@ static int sm5502_muic_cable_handler(struct sm5502_muic_info *info,
>
> /* Change the state of external accessory */
> extcon_set_cable_state_(info->edev, id, attached);
> + if (id == EXTCON_USB)
> + extcon_set_cable_state_(info->edev, EXTCON_CHG_USB_SDP,
> + attached);
>
> return 0;
> }
>
--
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