On 15.11.18 18:58, Andy Shevchenko wrote:
> New callback will give a necessary information to fill up ACPI SPCR table,
> for example. Maybe used later for other purposes.
>
> Signed-off-by: Andy Shevchenko <andriy.shevche...@linux.intel.com>
> ---
> drivers/serial/serial-uclass.c | 21 +++++++++++++++++++++
> include/common.h | 3 +++
> include/serial.h | 17 +++++++++++++++++
> 3 files changed, 41 insertions(+)
>
> diff --git a/drivers/serial/serial-uclass.c b/drivers/serial/serial-uclass.c
> index 665cca85cb..274734d059 100644
> --- a/drivers/serial/serial-uclass.c
> +++ b/drivers/serial/serial-uclass.c
> @@ -308,6 +308,25 @@ int serial_setconfig(uint config)
> return 0;
> }
>
> +int serial_getinfo(struct serial_device_info *info)
> +{
> + struct dm_serial_ops *ops;
> +
> + if (!gd->cur_serial_dev)
> + return -ENODEV;
> +
> + if (!info)
> + return -EINVAL;
> +
> + info->baudrate = gd->baudrate;
> +
> + ops = serial_get_ops(gd->cur_serial_dev);
> + if (ops->getinfo)
> + return ops->getinfo(gd->cur_serial_dev, info);
> +
> + return -EINVAL;
> +}
> +
> void serial_stdio_init(void)
> {
> }
> @@ -425,6 +444,8 @@ static int serial_post_probe(struct udevice *dev)
> if (ops->loop)
> ops->loop += gd->reloc_off;
> #endif
> + if (ops->getinfo)
> + ops->getinfo += gd->reloc_off;
> #endif
> /* Set the baud rate */
> if (ops->setbrg) {
> diff --git a/include/common.h b/include/common.h
> index 8b9f859c07..1f9c98e735 100644
> --- a/include/common.h
> +++ b/include/common.h
> @@ -349,6 +349,8 @@ void smp_set_core_boot_addr(unsigned long addr, int
> corenr);
> void smp_kick_all_cpus(void);
>
> /* $(CPU)/serial.c */
> +struct serial_device_info;
> +
> int serial_init (void);
> void serial_setbrg (void);
> void serial_putc (const char);
> @@ -357,6 +359,7 @@ void serial_puts (const char *);
> int serial_getc (void);
> int serial_tstc (void);
> int serial_setconfig(uint config);
> +int serial_getinfo(struct serial_device_info *info);
>
> /* $(CPU)/speed.c */
> int get_clocks (void);
> diff --git a/include/serial.h b/include/serial.h
> index 020cd392e8..33531b7791 100644
> --- a/include/serial.h
> +++ b/include/serial.h
> @@ -111,6 +111,16 @@ enum serial_stop {
> SERIAL_8_BITS << SERIAL_BITS_SHIFT | \
> SERIAL_ONE_STOP << SERIAL_STOP_SHIFT
>
> +/* REVISIT: ACPI GAS specification implied */
What does this REVISIT tag mean?
Alex
> +struct serial_device_info {
> + unsigned int baudrate;
> + u8 addr_space; /* 0 - MMIO, 1 - IO */
> + u8 reg_width;
> + u8 reg_offset;
> + u8 reg_shift;
> + u64 addr;
> +};
> +
> /**
> * struct struct dm_serial_ops - Driver model serial operations
> *
> @@ -201,6 +211,13 @@ struct dm_serial_ops {
> * @return 0 if OK, -ve on error
> */
> int (*setconfig)(struct udevice *dev, uint serial_config);
> + /**
> + * getinfo() - Get serial device information
> + *
> + * @dev: Device pointer
> + * @info: struct serial_device_info to fill
> + */
> + int (*getinfo)(struct udevice *dev, struct serial_device_info *info);
> };
>
> /**
>
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