Hi,
On Mon, Feb 26, 2018 at 07:49:09PM +0800, Li Jun wrote:
> This patch add 2 APIs to get sink and source power config from firmware
> description.
>
> Signed-off-by: Li Jun <jun.li@xxxxxxx>
> ---
> drivers/usb/typec/tcpm.c | 43 +++++++++++++++++++++++++++++++++++++++++++
> include/linux/usb/tcpm.h | 2 ++
> 2 files changed, 45 insertions(+)
>
> diff --git a/drivers/usb/typec/tcpm.c b/drivers/usb/typec/tcpm.c
> index f4d563e..409f1d0 100644
> --- a/drivers/usb/typec/tcpm.c
> +++ b/drivers/usb/typec/tcpm.c
> @@ -12,6 +12,7 @@
> #include <linux/kernel.h>
> #include <linux/module.h>
> #include <linux/mutex.h>
> +#include <linux/of.h>
No need for that. There is nothing DT only specific here.
As in 01/12, you only have device properties here, so use the unified
device property API instead of of_property_* functions.
> #include <linux/proc_fs.h>
> #include <linux/sched/clock.h>
> #include <linux/seq_file.h>
> @@ -3589,6 +3590,48 @@ static int tcpm_copy_vdos(u32 *dest_vdo, const u32 *src_vdo,
> return nr_vdo;
> }
>
> +int tcpm_of_get_src_config(struct device_node *np, struct tcpc_config *tcfg)
> +{
> + int ret;
> +
> + ret = of_property_read_variable_u32_array(np, "src-pdos",
> + tcfg->src_pdo, 1, PDO_MAX_OBJECTS);
> + if (ret > 0)
> + tcfg->nr_src_pdo = ret;
> +
> + return ret;
> +}
> +EXPORT_SYMBOL_GPL(tcpm_of_get_pdos);
> +
> +int tcpm_of_get_snk_config(struct device_node *np, struct tcpc_config *tcfg)
> +{
> + int ret;
> +
> + ret = of_property_read_variable_u32_array(np, "snk-pdos",
> + tcfg->snk_pdo, 1, PDO_MAX_OBJECTS);
> + if (ret > 0)
> + tcfg->nr_snk_pdo = ret;
> + else
> + return ret;
> +
> + ret = of_property_read_u32(np, "max-snk-microvolt", &tcfg->max_snk_mv);
> + if (ret)
> + return ret;
> +
> + ret = of_property_read_u32(np, "max-snk-microamp", &tcfg->max_snk_ma);
> + if (ret)
> + return ret;
> +
> + ret = of_property_read_u32(np, "max-snk-microwatt-hours",
> + &tcfg->max_snk_mw);
> + if (ret)
> + return ret;
> +
> + return of_property_read_u32(np, "op-snk-microwatt-hours",
> + &tcfg->operating_snk_mw);
> +}
> +EXPORT_SYMBOL_GPL(tcpm_of_get_pdos);
> +
> int tcpm_update_source_capabilities(struct tcpm_port *port, const u32 *pdo,
> unsigned int nr_pdo)
> {
> diff --git a/include/linux/usb/tcpm.h b/include/linux/usb/tcpm.h
> index ca1c0b5..962eff1 100644
> --- a/include/linux/usb/tcpm.h
> +++ b/include/linux/usb/tcpm.h
> @@ -191,6 +191,8 @@ int tcpm_update_sink_capabilities(struct tcpm_port *port, const u32 *pdo,
> unsigned int max_snk_ma,
> unsigned int max_snk_mw,
> unsigned int operating_snk_mw);
> +int tcpm_of_get_src_config(struct device_node *np, struct tcpc_config *tcfg);
> +int tcpm_of_get_snk_config(struct device_node *np, struct tcpc_config *tcfg);
>
> void tcpm_vbus_change(struct tcpm_port *port);
> void tcpm_cc_change(struct tcpm_port *port);
Thanks,
--
heikki
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