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Date: Fri, 27 Mar 2015 19:53:25 -0700
From: Darren Hart <dvhart@...radead.org>
To: Azael Avalos <coproscefalo@...il.com>
Cc: platform-driver-x86@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/3] toshiba_acpi: Update and fix USB Sleep and Charge
modes
On Fri, Mar 27, 2015 at 03:09:24PM -0600, Azael Avalos wrote:
> This patch fixes the USB Sleep and Charge mode on certain models
> where the value returned by the BIOS is different, and thus, making
> this feature not to work for those models.
>
> Also, the "Typical" charging mode was added as a supported mode.
What does typical mean?
>
> Signed-off-by: Azael Avalos <coproscefalo@...il.com>
> ---
> drivers/platform/x86/toshiba_acpi.c | 61 +++++++++++++++++++++++++++++++------
> 1 file changed, 52 insertions(+), 9 deletions(-)
>
> diff --git a/drivers/platform/x86/toshiba_acpi.c b/drivers/platform/x86/toshiba_acpi.c
> index 17a259e..595f12c 100644
> --- a/drivers/platform/x86/toshiba_acpi.c
> +++ b/drivers/platform/x86/toshiba_acpi.c
> @@ -150,9 +150,10 @@ MODULE_LICENSE("GPL");
> #define SCI_KBD_MODE_OFF 0x10
> #define SCI_KBD_TIME_MAX 0x3c001a
> #define SCI_USB_CHARGE_MODE_MASK 0xff
> -#define SCI_USB_CHARGE_DISABLED 0x30000
> -#define SCI_USB_CHARGE_ALTERNATE 0x30009
> -#define SCI_USB_CHARGE_AUTO 0x30021
> +#define SCI_USB_CHARGE_DISABLED 0x00
> +#define SCI_USB_CHARGE_ALTERNATE 0x09
> +#define SCI_USB_CHARGE_TYPICAL 0x11
> +#define SCI_USB_CHARGE_AUTO 0x21
> #define SCI_USB_CHARGE_BAT_MASK 0x7
> #define SCI_USB_CHARGE_BAT_LVL_OFF 0x1
> #define SCI_USB_CHARGE_BAT_LVL_ON 0x4
> @@ -177,6 +178,7 @@ struct toshiba_acpi_dev {
> int kbd_mode;
> int kbd_time;
> int usbsc_bat_level;
> + int usbsc_mode_base;
> int hotkey_event_type;
>
> unsigned int illumination_supported:1;
> @@ -800,6 +802,44 @@ static int toshiba_accelerometer_get(struct toshiba_acpi_dev *dev,
> }
>
> /* Sleep (Charge and Music) utilities support */
> +static void toshiba_usb_sleep_charge_available(struct toshiba_acpi_dev *dev)
> +{
> + u32 in[TCI_WORDS] = { SCI_GET, SCI_USB_SLEEP_CHARGE, 0, 0, 0, 0 };
> + u32 out[TCI_WORDS];
> + acpi_status status;
> +
> + if (!sci_open(dev))
> + return;
> +
Hrm, might be a good idea to set usb_sleep_charge_supported to 0 first so if we
error out here, it is disabled.
> + status = tci_raw(dev, in, out);
> + if (ACPI_FAILURE(status) || out[0] == TOS_FAILURE) {
> + pr_err("ACPI call to get USB S&C mode failed\n");
> + sci_close(dev);
> + return;
> + } else if (out[0] == TOS_NOT_SUPPORTED) {
> + pr_info("USB Sleep and Charge not supported\n");
> + sci_close(dev);
> + return;
> + }
> + dev->usbsc_mode_base = out[4];
> +
> + in[5] = SCI_USB_CHARGE_BAT_LVL;
> + status = tci_raw(dev, in, out);
> + if (ACPI_FAILURE(status) || out[0] == TOS_FAILURE) {
> + pr_err("ACPI call to get USB S&C battery level failed\n");
Sleep and Charge here too please. This keeps it consistent with the other
messages as well as explicit for those who may not map S&C to Sleep and Charge.
> + sci_close(dev);
> + return;
> + } else if (out[0] == TOS_NOT_SUPPORTED) {
> + pr_info("USB Sleep and Charge not supported\n");
> + sci_close(dev);
> + return;
> + }
> + dev->usbsc_bat_level = out[2];
> + dev->usb_sleep_charge_supported = 1;
> +
> + sci_close(dev);
> +}
> +
> static int toshiba_usb_sleep_charge_get(struct toshiba_acpi_dev *dev,
> u32 *mode)
> {
> @@ -1976,17 +2016,21 @@ static ssize_t usb_sleep_charge_store(struct device *dev,
> * 0 - Disabled
> * 1 - Alternate (Non USB conformant devices that require more power)
> * 2 - Auto (USB conformant devices)
> + * 3 - Typical
> */
> - if (state != 0 && state != 1 && state != 2)
> + if (state != 0 && state != 1 && state != 2 && state != 3)
> return -EINVAL;
>
> /* Set the USB charging mode to internal value */
> + mode = toshiba->usbsc_mode_base;
> if (state == 0)
> - mode = SCI_USB_CHARGE_DISABLED;
> + mode |= SCI_USB_CHARGE_DISABLED;
> else if (state == 1)
> - mode = SCI_USB_CHARGE_ALTERNATE;
> + mode |= SCI_USB_CHARGE_ALTERNATE;
> else if (state == 2)
> - mode = SCI_USB_CHARGE_AUTO;
> + mode |= SCI_USB_CHARGE_AUTO;
> + else if (state == 3)
> + mode |= SCI_USB_CHARGE_TYPICAL;
>
> ret = toshiba_usb_sleep_charge_set(toshiba, mode);
> if (ret)
> @@ -2756,8 +2800,7 @@ static int toshiba_acpi_add(struct acpi_device *acpi_dev)
> ret = toshiba_accelerometer_supported(dev);
> dev->accelerometer_supported = !ret;
>
> - ret = toshiba_usb_sleep_charge_get(dev, &dummy);
> - dev->usb_sleep_charge_supported = !ret;
> + toshiba_usb_sleep_charge_available(dev);
>
> ret = toshiba_usb_rapid_charge_get(dev, &dummy);
> dev->usb_rapid_charge_supported = !ret;
The rest looks good.
--
Darren Hart
Intel Open Source Technology Center
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