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drivers: esoc: Add new pon ops for marmot

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Add new pon ops for marmot external modem. This is required as the
pon reset sequence time has increased, so add an additional delay
after doing the soft reset.

Change-Id: I52477bccf139ac0e34391c79a145720e7c13f373
Signed-off-by: Rishabh Bhatnagar <rishabhb@codeaurora.org>
This commit is contained in:
Rishabh Bhatnagar 2020-08-27 10:19:03 -07:00 committed by Gerrit - the friendly Code Review server
parent 277fd220d2
commit fa9b3eef7c
3 changed files with 50 additions and 2 deletions
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2
drivers/esoc/esoc-mdm-4x.c
View File

@ -1119,7 +1119,7 @@ static struct mdm_ops sdxprairie_ops = {
static struct mdm_ops marmot_ops = {
.clink_ops = &mdm_cops,
.config_hw = marmot_setup_hw,
.pon_ops = &sdx50m_pon_ops,
.pon_ops = &sdxmarmot_pon_ops,
};
static const struct of_device_id mdm_dt_match[] = {

49
drivers/esoc/esoc-mdm-pon.c
View File

@ -1,4 +1,4 @@
/* Copyright (c) 2014-2015, 2017-2019, The Linux Foundation. All rights reserved.
/* Copyright (c) 2014-2015, 2017-2020, The Linux Foundation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
@ -115,6 +115,44 @@ static int mdm4x_do_first_power_on(struct mdm_ctrl *mdm)
return 0;
}
static int sdxmarmot_do_first_power_on(struct mdm_ctrl *mdm)
{
int i;
int pblrdy;
struct device *dev = mdm->dev;
esoc_mdm_log("Powering on modem for the first time\n");
dev_dbg(dev, "Powering on modem for the first time\n");
if (mdm->esoc->auto_boot)
return 0;
mdm_toggle_soft_reset(mdm, false);
/* Add a delay to allow PON sequence to complete*/
msleep(325);
esoc_mdm_log("Setting AP2MDM_STATUS = 1\n");
gpio_direction_output(MDM_GPIO(mdm, AP2MDM_STATUS), 1);
if (gpio_is_valid(MDM_GPIO(mdm, MDM2AP_PBLRDY))) {
for (i = 0; i < MDM_PBLRDY_CNT; i++) {
pblrdy = gpio_get_value(MDM_GPIO(mdm, MDM2AP_PBLRDY));
if (pblrdy)
break;
usleep_range(5000, 6000);
}
dev_dbg(dev, "pblrdy i:%d\n", i);
msleep(200);
}
/*
* No PBLRDY gpio associated with this modem
* Send request for image. Let userspace confirm establishment of
* link to external modem.
*/
else {
esoc_mdm_log("Queueing the request: ESOC_REQ_IMG\n");
esoc_clink_queue_request(ESOC_REQ_IMG, mdm->esoc);
}
return 0;
}
static int mdm9x55_power_down(struct mdm_ctrl *mdm)
{
struct device *dev = mdm->dev;
@ -270,3 +308,12 @@ struct mdm_pon_ops sdx50m_pon_ops = {
.dt_init = mdm4x_pon_dt_init,
.setup = mdm4x_pon_setup,
};
struct mdm_pon_ops sdxmarmot_pon_ops = {
.pon = sdxmarmot_do_first_power_on,
.soft_reset = sdx50m_toggle_soft_reset,
.poff_force = sdx50m_power_down,
.cold_reset = sdx50m_cold_reset,
.dt_init = mdm4x_pon_dt_init,
.setup = mdm4x_pon_setup,
};

1
drivers/esoc/esoc-mdm.h
View File

@ -155,4 +155,5 @@ static inline int mdm_pon_setup(struct mdm_ctrl *mdm)
extern struct mdm_pon_ops mdm9x55_pon_ops;
extern struct mdm_pon_ops sdx50m_pon_ops;
extern struct mdm_pon_ops sdxmarmot_pon_ops;
#endif