linux-kernel - Re: [PATCH 1/2] mfd: cros-ec: Update cros_ec

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Date:   Mon, 23 Jan 2017 12:13:19 +0000
From:   Lee Jones <lee.jones@...aro.org>
To:     Enric Balletbo i Serra <enric.balletbo@...labora.com>
Cc:     Dmitry Torokhov <dmitry.torokhov@...il.com>,
        linux-kernel@...r.kernel.org, linux-input@...r.kernel.org,
        Douglas Anderson <dianders@...omium.org>
Subject: Re: [PATCH 1/2] mfd: cros-ec: Update cros_ec_commands.h for buttons
 and switches

On Fri, 20 Jan 2017, Enric Balletbo i Serra wrote:

> From: Douglas Anderson <dianders@...omium.org>
> 
> Add the defines for the new buttons and switches connected to the CrosEC.
> 
> Signed-off-by: Douglas Anderson <dianders@...omium.org>
> Signed-off-by: Enric Balletbo i Serra <enric.balletbo@...labora.com>
> ---
>  include/linux/mfd/cros_ec_commands.h | 73 +++++++++++++++++++++++++++++++++++-
>  1 file changed, 71 insertions(+), 2 deletions(-)

Applied, thanks.

> diff --git a/include/linux/mfd/cros_ec_commands.h b/include/linux/mfd/cros_ec_commands.h
> index 23619b2..a01dde4 100644
> --- a/include/linux/mfd/cros_ec_commands.h
> +++ b/include/linux/mfd/cros_ec_commands.h
> @@ -1865,18 +1865,69 @@ struct ec_response_tmp006_get_raw {
>   *
>   * Returns raw data for keyboard cols; see ec_response_mkbp_info.cols for
>   * expected response size.
> + *
> + * NOTE: This has been superseded by EC_CMD_MKBP_GET_NEXT_EVENT.  If you wish
> + * to obtain the instantaneous state, use EC_CMD_MKBP_INFO with the type
> + * EC_MKBP_INFO_CURRENT and event EC_MKBP_EVENT_KEY_MATRIX.
>   */
>  #define EC_CMD_MKBP_STATE 0x60
>  
> -/* Provide information about the matrix : number of rows and columns */
> +/*
> + * Provide information about various MKBP things.  See enum ec_mkbp_info_type.
> + */
>  #define EC_CMD_MKBP_INFO 0x61
>  
>  struct ec_response_mkbp_info {
>  	uint32_t rows;
>  	uint32_t cols;
> -	uint8_t switches;
> +	/* Formerly "switches", which was 0. */
> +	uint8_t reserved;
>  } __packed;
>  
> +struct ec_params_mkbp_info {
> +	uint8_t info_type;
> +	uint8_t event_type;
> +} __packed;
> +
> +enum ec_mkbp_info_type {
> +	/*
> +	 * Info about the keyboard matrix: number of rows and columns.
> +	 *
> +	 * Returns struct ec_response_mkbp_info.
> +	 */
> +	EC_MKBP_INFO_KBD = 0,
> +
> +	/*
> +	 * For buttons and switches, info about which specifically are
> +	 * supported.  event_type must be set to one of the values in enum
> +	 * ec_mkbp_event.
> +	 *
> +	 * For EC_MKBP_EVENT_BUTTON and EC_MKBP_EVENT_SWITCH, returns a 4 byte
> +	 * bitmask indicating which buttons or switches are present.  See the
> +	 * bit inidices below.
> +	 */
> +	EC_MKBP_INFO_SUPPORTED = 1,
> +
> +	/*
> +	 * Instantaneous state of buttons and switches.
> +	 *
> +	 * event_type must be set to one of the values in enum ec_mkbp_event.
> +	 *
> +	 * For EC_MKBP_EVENT_KEY_MATRIX, returns uint8_t key_matrix[13]
> +	 * indicating the current state of the keyboard matrix.
> +	 *
> +	 * For EC_MKBP_EVENT_HOST_EVENT, return uint32_t host_event, the raw
> +	 * event state.
> +	 *
> +	 * For EC_MKBP_EVENT_BUTTON, returns uint32_t buttons, indicating the
> +	 * state of supported buttons.
> +	 *
> +	 * For EC_MKBP_EVENT_SWITCH, returns uint32_t switches, indicating the
> +	 * state of supported switches.
> +	 */
> +	EC_MKBP_INFO_CURRENT = 2,
> +};
> +
>  /* Simulate key press */
>  #define EC_CMD_MKBP_SIMULATE_KEY 0x62
>  
> @@ -2009,6 +2060,12 @@ enum ec_mkbp_event {
>  	/* New Sensor FIFO data. The event data is fifo_info structure. */
>  	EC_MKBP_EVENT_SENSOR_FIFO = 2,
>  
> +	/* The state of the non-matrixed buttons have changed. */
> +	EC_MKBP_EVENT_BUTTON = 3,
> +
> +	/* The state of the switches have changed. */
> +	EC_MKBP_EVENT_SWITCH = 4,
> +
>  	/* Number of MKBP events */
>  	EC_MKBP_EVENT_COUNT,
>  };
> @@ -2018,6 +2075,9 @@ union ec_response_get_next_data {
>  
>  	/* Unaligned */
>  	uint32_t  host_event;
> +
> +	uint32_t   buttons;
> +	uint32_t   switches;
>  } __packed;
>  
>  struct ec_response_get_next_event {
> @@ -2026,6 +2086,15 @@ struct ec_response_get_next_event {
>  	union ec_response_get_next_data data;
>  } __packed;
>  
> +/* Bit indices for buttons and switches.*/
> +/* Buttons */
> +#define EC_MKBP_POWER_BUTTON	0
> +#define EC_MKBP_VOL_UP		1
> +#define EC_MKBP_VOL_DOWN	2
> +
> +/* Switches */
> +#define EC_MKBP_LID_OPEN	0
> +
>  /*****************************************************************************/
>  /* Temperature sensor commands */
>  

-- 
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
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