blob: 334278b1a831f89c45544c694e4da79e6646672a [file] [log] [blame]
/* Copyright (c) 2014-2015, 2017, 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
* only version 2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <linux/coresight.h>
#include <linux/coresight-cti.h>
#include <linux/workqueue.h>
#include <soc/qcom/sysmon.h>
#include "esoc-mdm.h"
enum gpio_update_config {
GPIO_UPDATE_BOOTING_CONFIG = 1,
GPIO_UPDATE_RUNNING_CONFIG,
};
enum irq_mask {
IRQ_ERRFATAL = 0x1,
IRQ_STATUS = 0x2,
IRQ_PBLRDY = 0x4,
};
static struct gpio_map {
const char *name;
int index;
} gpio_map[] = {
{"qcom,mdm2ap-errfatal-gpio", MDM2AP_ERRFATAL},
{"qcom,ap2mdm-errfatal-gpio", AP2MDM_ERRFATAL},
{"qcom,mdm2ap-status-gpio", MDM2AP_STATUS},
{"qcom,ap2mdm-status-gpio", AP2MDM_STATUS},
{"qcom,mdm2ap-pblrdy-gpio", MDM2AP_PBLRDY},
{"qcom,ap2mdm-wakeup-gpio", AP2MDM_WAKEUP},
{"qcom,ap2mdm-chnlrdy-gpio", AP2MDM_CHNLRDY},
{"qcom,mdm2ap-wakeup-gpio", MDM2AP_WAKEUP},
{"qcom,ap2mdm-vddmin-gpio", AP2MDM_VDDMIN},
{"qcom,mdm2ap-vddmin-gpio", MDM2AP_VDDMIN},
{"qcom,ap2mdm-pmic-pwr-en-gpio", AP2MDM_PMIC_PWR_EN},
{"qcom,mdm-link-detect-gpio", MDM_LINK_DETECT},
};
/* Required gpios */
static const int required_gpios[] = {
MDM2AP_ERRFATAL,
AP2MDM_ERRFATAL,
MDM2AP_STATUS,
AP2MDM_STATUS,
};
static void mdm_debug_gpio_show(struct mdm_ctrl *mdm)
{
struct device *dev = mdm->dev;
dev_dbg(dev, "%s: MDM2AP_ERRFATAL gpio = %d\n",
__func__, MDM_GPIO(mdm, MDM2AP_ERRFATAL));
dev_dbg(dev, "%s: AP2MDM_ERRFATAL gpio = %d\n",
__func__, MDM_GPIO(mdm, AP2MDM_ERRFATAL));
dev_dbg(dev, "%s: MDM2AP_STATUS gpio = %d\n",
__func__, MDM_GPIO(mdm, MDM2AP_STATUS));
dev_dbg(dev, "%s: AP2MDM_STATUS gpio = %d\n",
__func__, MDM_GPIO(mdm, AP2MDM_STATUS));
dev_dbg(dev, "%s: AP2MDM_SOFT_RESET gpio = %d\n",
__func__, MDM_GPIO(mdm, AP2MDM_SOFT_RESET));
dev_dbg(dev, "%s: MDM2AP_WAKEUP gpio = %d\n",
__func__, MDM_GPIO(mdm, MDM2AP_WAKEUP));
dev_dbg(dev, "%s: AP2MDM_WAKEUP gpio = %d\n",
__func__, MDM_GPIO(mdm, AP2MDM_WAKEUP));
dev_dbg(dev, "%s: AP2MDM_PMIC_PWR_EN gpio = %d\n",
__func__, MDM_GPIO(mdm, AP2MDM_PMIC_PWR_EN));
dev_dbg(dev, "%s: MDM2AP_PBLRDY gpio = %d\n",
__func__, MDM_GPIO(mdm, MDM2AP_PBLRDY));
dev_dbg(dev, "%s: AP2MDM_VDDMIN gpio = %d\n",
__func__, MDM_GPIO(mdm, AP2MDM_VDDMIN));
dev_dbg(dev, "%s: MDM2AP_VDDMIN gpio = %d\n",
__func__, MDM_GPIO(mdm, MDM2AP_VDDMIN));
}
static void mdm_enable_irqs(struct mdm_ctrl *mdm)
{
if (!mdm)
return;
if (mdm->irq_mask & IRQ_ERRFATAL) {
enable_irq(mdm->errfatal_irq);
irq_set_irq_wake(mdm->errfatal_irq, 1);
mdm->irq_mask &= ~IRQ_ERRFATAL;
}
if (mdm->irq_mask & IRQ_STATUS) {
enable_irq(mdm->status_irq);
irq_set_irq_wake(mdm->status_irq, 1);
mdm->irq_mask &= ~IRQ_STATUS;
}
if (mdm->irq_mask & IRQ_PBLRDY) {
enable_irq(mdm->pblrdy_irq);
mdm->irq_mask &= ~IRQ_PBLRDY;
}
}
static void mdm_disable_irqs(struct mdm_ctrl *mdm)
{
if (!mdm)
return;
if (!(mdm->irq_mask & IRQ_ERRFATAL)) {
irq_set_irq_wake(mdm->errfatal_irq, 0);
disable_irq_nosync(mdm->errfatal_irq);
mdm->irq_mask |= IRQ_ERRFATAL;
}
if (!(mdm->irq_mask & IRQ_STATUS)) {
irq_set_irq_wake(mdm->status_irq, 0);
disable_irq_nosync(mdm->status_irq);
mdm->irq_mask |= IRQ_STATUS;
}
if (!(mdm->irq_mask & IRQ_PBLRDY)) {
disable_irq_nosync(mdm->pblrdy_irq);
mdm->irq_mask |= IRQ_PBLRDY;
}
}
static void mdm_deconfigure_ipc(struct mdm_ctrl *mdm)
{
int i;
for (i = 0; i < NUM_GPIOS; ++i) {
if (gpio_is_valid(MDM_GPIO(mdm, i)))
gpio_free(MDM_GPIO(mdm, i));
}
if (mdm->mdm_queue) {
destroy_workqueue(mdm->mdm_queue);
mdm->mdm_queue = NULL;
}
}
static void mdm_update_gpio_configs(struct mdm_ctrl *mdm,
enum gpio_update_config gpio_config)
{
struct pinctrl_state *pins_state = NULL;
/* Some gpio configuration may need updating after modem bootup.*/
switch (gpio_config) {
case GPIO_UPDATE_RUNNING_CONFIG:
pins_state = mdm->gpio_state_running;
break;
case GPIO_UPDATE_BOOTING_CONFIG:
pins_state = mdm->gpio_state_booting;
break;
default:
pins_state = NULL;
dev_err(mdm->dev, "%s: called with no config\n", __func__);
break;
}
if (pins_state != NULL) {
if (pinctrl_select_state(mdm->pinctrl, pins_state))
dev_err(mdm->dev, "switching gpio config failed\n");
}
}
static void mdm_trigger_dbg(struct mdm_ctrl *mdm)
{
int ret;
if (mdm->dbg_mode && !mdm->trig_cnt) {
ret = coresight_cti_pulse_trig(mdm->cti, MDM_CTI_CH);
mdm->trig_cnt++;
if (ret)
dev_err(mdm->dev, "unable to trigger cti pulse on\n");
}
}
static int mdm_cmd_exe(enum esoc_cmd cmd, struct esoc_clink *esoc)
{
unsigned long end_time;
bool status_down = false;
struct mdm_ctrl *mdm = get_esoc_clink_data(esoc);
struct device *dev = mdm->dev;
int ret;
bool graceful_shutdown = false;
switch (cmd) {
case ESOC_PWR_ON:
gpio_set_value(MDM_GPIO(mdm, AP2MDM_ERRFATAL), 0);
mdm_enable_irqs(mdm);
mdm->init = 1;
mdm_do_first_power_on(mdm);
break;
case ESOC_PWR_OFF:
mdm_disable_irqs(mdm);
mdm->debug = 0;
mdm->ready = false;
mdm->trig_cnt = 0;
graceful_shutdown = true;
ret = sysmon_send_shutdown(&esoc->subsys);
if (ret) {
dev_err(mdm->dev, "sysmon shutdown fail, ret = %d\n",
ret);
graceful_shutdown = false;
goto force_poff;
}
dev_dbg(mdm->dev, "Waiting for status gpio go low\n");
status_down = false;
end_time = jiffies + msecs_to_jiffies(10000);
while (time_before(jiffies, end_time)) {
if (gpio_get_value(MDM_GPIO(mdm, MDM2AP_STATUS))
== 0) {
dev_dbg(dev, "Status went low\n");
status_down = true;
break;
}
msleep(100);
}
if (status_down)
dev_dbg(dev, "shutdown successful\n");
else
dev_err(mdm->dev, "graceful poff ipc fail\n");
break;
force_poff:
case ESOC_FORCE_PWR_OFF:
if (!graceful_shutdown) {
mdm_disable_irqs(mdm);
mdm->debug = 0;
mdm->ready = false;
mdm->trig_cnt = 0;
dev_err(mdm->dev, "Graceful shutdown fail, ret = %d\n",
esoc->subsys.sysmon_shutdown_ret);
}
/*
* Force a shutdown of the mdm. This is required in order
* to prevent the mdm from immediately powering back on
* after the shutdown
*/
gpio_set_value(MDM_GPIO(mdm, AP2MDM_STATUS), 0);
esoc_clink_queue_request(ESOC_REQ_SHUTDOWN, esoc);
mdm_power_down(mdm);
mdm_update_gpio_configs(mdm, GPIO_UPDATE_BOOTING_CONFIG);
break;
case ESOC_RESET:
mdm_toggle_soft_reset(mdm, false);
break;
case ESOC_PREPARE_DEBUG:
/*
* disable all irqs except request irq (pblrdy)
* force a reset of the mdm by signaling
* an APQ crash, wait till mdm is ready for ramdumps.
*/
mdm->ready = false;
cancel_delayed_work(&mdm->mdm2ap_status_check_work);
gpio_set_value(MDM_GPIO(mdm, AP2MDM_ERRFATAL), 1);
dev_dbg(mdm->dev, "set ap2mdm errfatal to force reset\n");
msleep(mdm->ramdump_delay_ms);
break;
case ESOC_EXE_DEBUG:
mdm->debug = 1;
mdm->trig_cnt = 0;
mdm_toggle_soft_reset(mdm, false);
/*
* wait for ramdumps to be collected
* then power down the mdm and switch gpios to booting
* config
*/
wait_for_completion(&mdm->debug_done);
if (mdm->debug_fail) {
dev_err(mdm->dev, "unable to collect ramdumps\n");
mdm->debug = 0;
return -EIO;
}
dev_dbg(mdm->dev, "ramdump collection done\n");
mdm->debug = 0;
init_completion(&mdm->debug_done);
break;
case ESOC_EXIT_DEBUG:
/*
* Deassert APQ to mdm err fatal
* Power on the mdm
*/
gpio_set_value(MDM_GPIO(mdm, AP2MDM_ERRFATAL), 0);
dev_dbg(mdm->dev, "exiting debug state after power on\n");
mdm->get_restart_reason = true;
break;
default:
return -EINVAL;
};
return 0;
}
static void mdm2ap_status_check(struct work_struct *work)
{
struct mdm_ctrl *mdm =
container_of(work, struct mdm_ctrl,
mdm2ap_status_check_work.work);
struct device *dev = mdm->dev;
struct esoc_clink *esoc = mdm->esoc;
if (gpio_get_value(MDM_GPIO(mdm, MDM2AP_STATUS)) == 0) {
dev_dbg(dev, "MDM2AP_STATUS did not go high\n");
esoc_clink_evt_notify(ESOC_UNEXPECTED_RESET, esoc);
}
}
static void mdm_status_fn(struct work_struct *work)
{
struct mdm_ctrl *mdm =
container_of(work, struct mdm_ctrl, mdm_status_work);
struct device *dev = mdm->dev;
int value = gpio_get_value(MDM_GPIO(mdm, MDM2AP_STATUS));
dev_dbg(dev, "%s: status:%d\n", __func__, value);
/* Update gpio configuration to "running" config. */
mdm_update_gpio_configs(mdm, GPIO_UPDATE_RUNNING_CONFIG);
}
static void mdm_get_restart_reason(struct work_struct *work)
{
int ret, ntries = 0;
char sfr_buf[RD_BUF_SIZE];
struct mdm_ctrl *mdm =
container_of(work, struct mdm_ctrl, restart_reason_work);
struct device *dev = mdm->dev;
do {
ret = sysmon_get_reason(&mdm->esoc->subsys, sfr_buf,
sizeof(sfr_buf));
if (!ret) {
dev_err(dev, "mdm restart reason is %s\n", sfr_buf);
break;
}
msleep(SFR_RETRY_INTERVAL);
} while (++ntries < SFR_MAX_RETRIES);
if (ntries == SFR_MAX_RETRIES)
dev_dbg(dev, "%s: Error retrieving restart reason: %d\n",
__func__, ret);
mdm->get_restart_reason = false;
}
static void mdm_notify(enum esoc_notify notify, struct esoc_clink *esoc)
{
bool status_down;
uint64_t timeout;
uint64_t now;
struct mdm_ctrl *mdm = get_esoc_clink_data(esoc);
struct device *dev = mdm->dev;
switch (notify) {
case ESOC_IMG_XFER_DONE:
if (gpio_get_value(MDM_GPIO(mdm, MDM2AP_STATUS)) == 0)
schedule_delayed_work(&mdm->mdm2ap_status_check_work,
msecs_to_jiffies(MDM2AP_STATUS_TIMEOUT_MS));
break;
case ESOC_BOOT_DONE:
esoc_clink_evt_notify(ESOC_RUN_STATE, esoc);
break;
case ESOC_IMG_XFER_RETRY:
mdm->init = 1;
mdm_toggle_soft_reset(mdm, false);
break;
case ESOC_IMG_XFER_FAIL:
esoc_clink_evt_notify(ESOC_INVALID_STATE, esoc);
break;
case ESOC_BOOT_FAIL:
esoc_clink_evt_notify(ESOC_INVALID_STATE, esoc);
break;
case ESOC_UPGRADE_AVAILABLE:
break;
case ESOC_DEBUG_DONE:
mdm->debug_fail = false;
mdm_update_gpio_configs(mdm, GPIO_UPDATE_BOOTING_CONFIG);
complete(&mdm->debug_done);
break;
case ESOC_DEBUG_FAIL:
mdm->debug_fail = true;
complete(&mdm->debug_done);
break;
case ESOC_PRIMARY_CRASH:
mdm_disable_irqs(mdm);
status_down = false;
dev_dbg(dev, "signal apq err fatal for graceful restart\n");
gpio_set_value(MDM_GPIO(mdm, AP2MDM_ERRFATAL), 1);
timeout = local_clock();
do_div(timeout, NSEC_PER_MSEC);
timeout += MDM_MODEM_TIMEOUT;
do {
if (gpio_get_value(MDM_GPIO(mdm,
MDM2AP_STATUS)) == 0) {
status_down = true;
break;
}
now = local_clock();
do_div(now, NSEC_PER_MSEC);
} while (!time_after64(now, timeout));
if (!status_down) {
dev_err(mdm->dev, "%s MDM2AP status did not go low\n",
__func__);
mdm_toggle_soft_reset(mdm, true);
}
break;
case ESOC_PRIMARY_REBOOT:
mdm_disable_irqs(mdm);
mdm->debug = 0;
mdm->ready = false;
mdm_cold_reset(mdm);
break;
};
}
static irqreturn_t mdm_errfatal(int irq, void *dev_id)
{
struct mdm_ctrl *mdm = (struct mdm_ctrl *)dev_id;
struct esoc_clink *esoc;
struct device *dev;
if (!mdm)
goto no_mdm_irq;
dev = mdm->dev;
if (!mdm->ready)
goto mdm_pwroff_irq;
esoc = mdm->esoc;
dev_err(dev, "%s: mdm sent errfatal interrupt\n",
__func__);
/* disable irq ?*/
esoc_clink_evt_notify(ESOC_ERR_FATAL, esoc);
return IRQ_HANDLED;
mdm_pwroff_irq:
dev_info(dev, "errfatal irq when in pwroff\n");
no_mdm_irq:
return IRQ_HANDLED;
}
static irqreturn_t mdm_status_change(int irq, void *dev_id)
{
int value;
struct esoc_clink *esoc;
struct device *dev;
struct mdm_ctrl *mdm = (struct mdm_ctrl *)dev_id;
if (!mdm)
return IRQ_HANDLED;
dev = mdm->dev;
esoc = mdm->esoc;
value = gpio_get_value(MDM_GPIO(mdm, MDM2AP_STATUS));
if (value == 0 && mdm->ready) {
dev_err(dev, "unexpected reset external modem\n");
esoc_clink_evt_notify(ESOC_UNEXPECTED_RESET, esoc);
} else if (value == 1) {
cancel_delayed_work(&mdm->mdm2ap_status_check_work);
dev_dbg(dev, "status = 1: mdm is now ready\n");
mdm->ready = true;
mdm_trigger_dbg(mdm);
queue_work(mdm->mdm_queue, &mdm->mdm_status_work);
if (mdm->get_restart_reason)
queue_work(mdm->mdm_queue, &mdm->restart_reason_work);
}
return IRQ_HANDLED;
}
static irqreturn_t mdm_pblrdy_change(int irq, void *dev_id)
{
struct mdm_ctrl *mdm;
struct device *dev;
struct esoc_clink *esoc;
mdm = (struct mdm_ctrl *)dev_id;
if (!mdm)
return IRQ_HANDLED;
esoc = mdm->esoc;
dev = mdm->dev;
dev_dbg(dev, "pbl ready %d:\n",
gpio_get_value(MDM_GPIO(mdm, MDM2AP_PBLRDY)));
if (mdm->init) {
mdm->init = 0;
mdm_trigger_dbg(mdm);
esoc_clink_queue_request(ESOC_REQ_IMG, esoc);
return IRQ_HANDLED;
}
if (mdm->debug)
esoc_clink_queue_request(ESOC_REQ_DEBUG, esoc);
return IRQ_HANDLED;
}
static int mdm_get_status(u32 *status, struct esoc_clink *esoc)
{
struct mdm_ctrl *mdm = get_esoc_clink_data(esoc);
if (gpio_get_value(MDM_GPIO(mdm, MDM2AP_STATUS)) == 0)
*status = 0;
else
*status = 1;
return 0;
}
static void mdm_configure_debug(struct mdm_ctrl *mdm)
{
void __iomem *addr;
unsigned int val;
int ret;
struct device_node *node = mdm->dev->of_node;
addr = of_iomap(node, 0);
if (IS_ERR_OR_NULL(addr)) {
dev_err(mdm->dev, "failed to get debug base address\n");
return;
}
mdm->dbg_addr = addr + MDM_DBG_OFFSET;
val = readl_relaxed(mdm->dbg_addr);
if (val == MDM_DBG_MODE) {
mdm->dbg_mode = true;
mdm->cti = coresight_cti_get(MDM_CTI_NAME);
if (IS_ERR_OR_NULL(mdm->cti)) {
dev_err(mdm->dev, "unable to get cti handle\n");
goto cti_get_err;
}
ret = coresight_cti_map_trigout(mdm->cti, MDM_CTI_TRIG,
MDM_CTI_CH);
if (ret) {
dev_err(mdm->dev, "unable to map trig to channel\n");
goto cti_map_err;
}
mdm->trig_cnt = 0;
} else {
dev_dbg(mdm->dev, "Not in debug mode. debug mode = %u\n", val);
mdm->dbg_mode = false;
}
return;
cti_map_err:
coresight_cti_put(mdm->cti);
cti_get_err:
mdm->dbg_mode = false;
}
/* Fail if any of the required gpios is absent. */
static int mdm_dt_parse_gpios(struct mdm_ctrl *mdm)
{
int i, val, rc = 0;
struct device_node *node = mdm->dev->of_node;
for (i = 0; i < NUM_GPIOS; i++)
mdm->gpios[i] = INVALID_GPIO;
for (i = 0; i < ARRAY_SIZE(gpio_map); i++) {
val = of_get_named_gpio(node, gpio_map[i].name, 0);
if (val >= 0)
MDM_GPIO(mdm, gpio_map[i].index) = val;
}
/* These two are special because they can be inverted. */
/* Verify that the required gpios have valid values */
for (i = 0; i < ARRAY_SIZE(required_gpios); i++) {
if (MDM_GPIO(mdm, required_gpios[i]) == INVALID_GPIO) {
rc = -ENXIO;
break;
}
}
mdm_debug_gpio_show(mdm);
return rc;
}
static int mdm_configure_ipc(struct mdm_ctrl *mdm, struct platform_device *pdev)
{
int ret = -1;
int irq;
struct device *dev = mdm->dev;
struct device_node *node = pdev->dev.of_node;
ret = of_property_read_u32(node, "qcom,ramdump-timeout-ms",
&mdm->dump_timeout_ms);
if (ret)
mdm->dump_timeout_ms = DEF_RAMDUMP_TIMEOUT;
ret = of_property_read_u32(node, "qcom,ramdump-delay-ms",
&mdm->ramdump_delay_ms);
if (ret)
mdm->ramdump_delay_ms = DEF_RAMDUMP_DELAY;
/* Multilple gpio_request calls are allowed */
if (gpio_request(MDM_GPIO(mdm, AP2MDM_STATUS), "AP2MDM_STATUS"))
dev_err(dev, "Failed to configure AP2MDM_STATUS gpio\n");
/* Multilple gpio_request calls are allowed */
if (gpio_request(MDM_GPIO(mdm, AP2MDM_ERRFATAL), "AP2MDM_ERRFATAL"))
dev_err(dev, "%s Failed to configure AP2MDM_ERRFATAL gpio\n",
__func__);
if (gpio_request(MDM_GPIO(mdm, MDM2AP_STATUS), "MDM2AP_STATUS")) {
dev_err(dev, "%s Failed to configure MDM2AP_STATUS gpio\n",
__func__);
goto fatal_err;
}
if (gpio_request(MDM_GPIO(mdm, MDM2AP_ERRFATAL), "MDM2AP_ERRFATAL")) {
dev_err(dev, "%s Failed to configure MDM2AP_ERRFATAL gpio\n",
__func__);
goto fatal_err;
}
if (gpio_is_valid(MDM_GPIO(mdm, MDM2AP_PBLRDY))) {
if (gpio_request(MDM_GPIO(mdm, MDM2AP_PBLRDY),
"MDM2AP_PBLRDY")) {
dev_err(dev, "Cannot configure MDM2AP_PBLRDY gpio\n");
goto fatal_err;
}
}
if (gpio_is_valid(MDM_GPIO(mdm, AP2MDM_WAKEUP))) {
if (gpio_request(MDM_GPIO(mdm, AP2MDM_WAKEUP),
"AP2MDM_WAKEUP")) {
dev_err(dev, "Cannot configure AP2MDM_WAKEUP gpio\n");
goto fatal_err;
}
}
if (gpio_is_valid(MDM_GPIO(mdm, AP2MDM_CHNLRDY))) {
if (gpio_request(MDM_GPIO(mdm, AP2MDM_CHNLRDY),
"AP2MDM_CHNLRDY")) {
dev_err(dev, "Cannot configure AP2MDM_CHNLRDY gpio\n");
goto fatal_err;
}
}
gpio_direction_output(MDM_GPIO(mdm, AP2MDM_STATUS), 0);
gpio_direction_output(MDM_GPIO(mdm, AP2MDM_ERRFATAL), 0);
if (gpio_is_valid(MDM_GPIO(mdm, AP2MDM_CHNLRDY)))
gpio_direction_output(MDM_GPIO(mdm, AP2MDM_CHNLRDY), 0);
gpio_direction_input(MDM_GPIO(mdm, MDM2AP_STATUS));
gpio_direction_input(MDM_GPIO(mdm, MDM2AP_ERRFATAL));
/* ERR_FATAL irq. */
irq = gpio_to_irq(MDM_GPIO(mdm, MDM2AP_ERRFATAL));
if (irq < 0) {
dev_err(dev, "bad MDM2AP_ERRFATAL IRQ resource\n");
goto errfatal_err;
}
ret = request_irq(irq, mdm_errfatal,
IRQF_TRIGGER_RISING, "mdm errfatal", mdm);
if (ret < 0) {
dev_err(dev, "%s: MDM2AP_ERRFATAL IRQ#%d request failed,\n",
__func__, irq);
goto errfatal_err;
}
mdm->errfatal_irq = irq;
errfatal_err:
/* status irq */
irq = gpio_to_irq(MDM_GPIO(mdm, MDM2AP_STATUS));
if (irq < 0) {
dev_err(dev, "%s: bad MDM2AP_STATUS IRQ resource, err = %d\n",
__func__, irq);
goto status_err;
}
ret = request_threaded_irq(irq, NULL, mdm_status_change,
IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
"mdm status", mdm);
if (ret < 0) {
dev_err(dev, "%s: MDM2AP_STATUS IRQ#%d request failed, err=%d",
__func__, irq, ret);
goto status_err;
}
mdm->status_irq = irq;
status_err:
if (gpio_is_valid(MDM_GPIO(mdm, MDM2AP_PBLRDY))) {
irq = platform_get_irq_byname(pdev, "plbrdy_irq");
if (irq < 0) {
dev_err(dev, "%s: MDM2AP_PBLRDY IRQ request failed\n",
__func__);
goto pblrdy_err;
}
ret = request_threaded_irq(irq, NULL, mdm_pblrdy_change,
IRQF_TRIGGER_RISING | IRQF_ONESHOT,
"mdm pbl ready", mdm);
if (ret < 0) {
dev_err(dev, "MDM2AP_PBL IRQ#%d request failed %d\n",
irq, ret);
goto pblrdy_err;
}
mdm->pblrdy_irq = irq;
}
mdm_disable_irqs(mdm);
pblrdy_err:
return 0;
fatal_err:
mdm_deconfigure_ipc(mdm);
return ret;
}
static int mdm_pinctrl_init(struct mdm_ctrl *mdm)
{
int retval = 0;
mdm->pinctrl = devm_pinctrl_get(mdm->dev);
if (IS_ERR_OR_NULL(mdm->pinctrl)) {
retval = PTR_ERR(mdm->pinctrl);
goto err_state_suspend;
}
mdm->gpio_state_booting =
pinctrl_lookup_state(mdm->pinctrl,
"mdm_booting");
if (IS_ERR_OR_NULL(mdm->gpio_state_booting)) {
mdm->gpio_state_running = NULL;
mdm->gpio_state_booting = NULL;
} else {
mdm->gpio_state_running =
pinctrl_lookup_state(mdm->pinctrl,
"mdm_running");
if (IS_ERR_OR_NULL(mdm->gpio_state_running)) {
mdm->gpio_state_booting = NULL;
mdm->gpio_state_running = NULL;
}
}
mdm->gpio_state_active =
pinctrl_lookup_state(mdm->pinctrl,
"mdm_active");
if (IS_ERR_OR_NULL(mdm->gpio_state_active)) {
retval = PTR_ERR(mdm->gpio_state_active);
goto err_state_active;
}
mdm->gpio_state_suspend =
pinctrl_lookup_state(mdm->pinctrl,
"mdm_suspend");
if (IS_ERR_OR_NULL(mdm->gpio_state_suspend)) {
retval = PTR_ERR(mdm->gpio_state_suspend);
goto err_state_suspend;
}
retval = pinctrl_select_state(mdm->pinctrl, mdm->gpio_state_active);
return retval;
err_state_suspend:
mdm->gpio_state_active = NULL;
err_state_active:
mdm->gpio_state_suspend = NULL;
mdm->gpio_state_booting = NULL;
mdm->gpio_state_running = NULL;
return retval;
}
static int mdm9x25_setup_hw(struct mdm_ctrl *mdm,
const struct mdm_ops *ops,
struct platform_device *pdev)
{
int ret;
struct esoc_clink *esoc;
const struct esoc_clink_ops *clink_ops = ops->clink_ops;
const struct mdm_pon_ops *pon_ops = ops->pon_ops;
mdm->dev = &pdev->dev;
mdm->pon_ops = pon_ops;
esoc = devm_kzalloc(mdm->dev, sizeof(*esoc), GFP_KERNEL);
if (IS_ERR_OR_NULL(esoc)) {
dev_err(mdm->dev, "cannot allocate esoc device\n");
return PTR_ERR(esoc);
}
mdm->mdm_queue = alloc_workqueue("mdm_queue", 0, 0);
if (!mdm->mdm_queue) {
dev_err(mdm->dev, "could not create mdm_queue\n");
return -ENOMEM;
}
mdm->irq_mask = 0;
mdm->ready = false;
ret = mdm_dt_parse_gpios(mdm);
if (ret)
return ret;
dev_err(mdm->dev, "parsing gpio done\n");
ret = mdm_pon_dt_init(mdm);
if (ret)
return ret;
dev_dbg(mdm->dev, "pon dt init done\n");
ret = mdm_pinctrl_init(mdm);
if (ret)
return ret;
dev_err(mdm->dev, "pinctrl init done\n");
ret = mdm_pon_setup(mdm);
if (ret)
return ret;
dev_dbg(mdm->dev, "pon setup done\n");
ret = mdm_configure_ipc(mdm, pdev);
if (ret)
return ret;
mdm_configure_debug(mdm);
dev_err(mdm->dev, "ipc configure done\n");
esoc->name = MDM9x25_LABEL;
esoc->link_name = MDM9x25_HSIC;
esoc->clink_ops = clink_ops;
esoc->parent = mdm->dev;
esoc->owner = THIS_MODULE;
esoc->np = pdev->dev.of_node;
set_esoc_clink_data(esoc, mdm);
ret = esoc_clink_register(esoc);
if (ret) {
dev_err(mdm->dev, "esoc registration failed\n");
return ret;
}
dev_dbg(mdm->dev, "esoc registration done\n");
init_completion(&mdm->debug_done);
INIT_WORK(&mdm->mdm_status_work, mdm_status_fn);
INIT_WORK(&mdm->restart_reason_work, mdm_get_restart_reason);
INIT_DELAYED_WORK(&mdm->mdm2ap_status_check_work, mdm2ap_status_check);
mdm->get_restart_reason = false;
mdm->debug_fail = false;
mdm->esoc = esoc;
mdm->init = 0;
return 0;
}
static int mdm9x35_setup_hw(struct mdm_ctrl *mdm,
const struct mdm_ops *ops,
struct platform_device *pdev)
{
int ret;
struct device_node *node;
struct esoc_clink *esoc;
const struct esoc_clink_ops *clink_ops = ops->clink_ops;
const struct mdm_pon_ops *pon_ops = ops->pon_ops;
mdm->dev = &pdev->dev;
mdm->pon_ops = pon_ops;
node = pdev->dev.of_node;
esoc = devm_kzalloc(mdm->dev, sizeof(*esoc), GFP_KERNEL);
if (IS_ERR_OR_NULL(esoc)) {
dev_err(mdm->dev, "cannot allocate esoc device\n");
return PTR_ERR(esoc);
}
mdm->mdm_queue = alloc_workqueue("mdm_queue", 0, 0);
if (!mdm->mdm_queue) {
dev_err(mdm->dev, "could not create mdm_queue\n");
return -ENOMEM;
}
mdm->irq_mask = 0;
mdm->ready = false;
ret = mdm_dt_parse_gpios(mdm);
if (ret)
return ret;
dev_dbg(mdm->dev, "parsing gpio done\n");
ret = mdm_pon_dt_init(mdm);
if (ret)
return ret;
dev_dbg(mdm->dev, "pon dt init done\n");
ret = mdm_pinctrl_init(mdm);
if (ret)
return ret;
dev_dbg(mdm->dev, "pinctrl init done\n");
ret = mdm_pon_setup(mdm);
if (ret)
return ret;
dev_dbg(mdm->dev, "pon setup done\n");
ret = mdm_configure_ipc(mdm, pdev);
if (ret)
return ret;
mdm_configure_debug(mdm);
dev_dbg(mdm->dev, "ipc configure done\n");
esoc->name = MDM9x35_LABEL;
mdm->dual_interface = of_property_read_bool(node,
"qcom,mdm-dual-link");
/* Check if link gpio is available */
if (gpio_is_valid(MDM_GPIO(mdm, MDM_LINK_DETECT))) {
if (mdm->dual_interface) {
if (gpio_get_value(MDM_GPIO(mdm, MDM_LINK_DETECT)))
esoc->link_name = MDM9x35_DUAL_LINK;
else
esoc->link_name = MDM9x35_PCIE;
} else {
if (gpio_get_value(MDM_GPIO(mdm, MDM_LINK_DETECT)))
esoc->link_name = MDM9x35_HSIC;
else
esoc->link_name = MDM9x35_PCIE;
}
} else if (mdm->dual_interface)
esoc->link_name = MDM9x35_DUAL_LINK;
else
esoc->link_name = MDM9x35_HSIC;
esoc->clink_ops = clink_ops;
esoc->parent = mdm->dev;
esoc->owner = THIS_MODULE;
esoc->np = pdev->dev.of_node;
set_esoc_clink_data(esoc, mdm);
ret = esoc_clink_register(esoc);
if (ret) {
dev_err(mdm->dev, "esoc registration failed\n");
return ret;
}
dev_dbg(mdm->dev, "esoc registration done\n");
init_completion(&mdm->debug_done);
INIT_WORK(&mdm->mdm_status_work, mdm_status_fn);
INIT_WORK(&mdm->restart_reason_work, mdm_get_restart_reason);
INIT_DELAYED_WORK(&mdm->mdm2ap_status_check_work, mdm2ap_status_check);
mdm->get_restart_reason = false;
mdm->debug_fail = false;
mdm->esoc = esoc;
mdm->init = 0;
return 0;
}
static int mdm9x55_setup_hw(struct mdm_ctrl *mdm,
const struct mdm_ops *ops,
struct platform_device *pdev)
{
int ret;
struct device_node *node;
struct esoc_clink *esoc;
const struct esoc_clink_ops *clink_ops = ops->clink_ops;
const struct mdm_pon_ops *pon_ops = ops->pon_ops;
mdm->dev = &pdev->dev;
mdm->pon_ops = pon_ops;
node = pdev->dev.of_node;
esoc = devm_kzalloc(mdm->dev, sizeof(*esoc), GFP_KERNEL);
if (IS_ERR_OR_NULL(esoc)) {
dev_err(mdm->dev, "cannot allocate esoc device\n");
return PTR_ERR(esoc);
}
mdm->mdm_queue = alloc_workqueue("mdm_queue", 0, 0);
if (!mdm->mdm_queue) {
dev_err(mdm->dev, "could not create mdm_queue\n");
return -ENOMEM;
}
mdm->irq_mask = 0;
mdm->ready = false;
ret = mdm_dt_parse_gpios(mdm);
if (ret)
return ret;
dev_dbg(mdm->dev, "parsing gpio done\n");
ret = mdm_pon_dt_init(mdm);
if (ret)
return ret;
dev_dbg(mdm->dev, "pon dt init done\n");
ret = mdm_pinctrl_init(mdm);
if (ret)
return ret;
dev_dbg(mdm->dev, "pinctrl init done\n");
ret = mdm_pon_setup(mdm);
if (ret)
return ret;
dev_dbg(mdm->dev, "pon setup done\n");
ret = mdm_configure_ipc(mdm, pdev);
if (ret)
return ret;
dev_dbg(mdm->dev, "ipc configure done\n");
esoc->name = MDM9x55_LABEL;
mdm->dual_interface = of_property_read_bool(node,
"qcom,mdm-dual-link");
esoc->link_name = MDM9x55_PCIE;
ret = of_property_read_string(node, "qcom,mdm-link-info",
&esoc->link_info);
if (ret)
dev_info(mdm->dev, "esoc link info missing\n");
esoc->clink_ops = clink_ops;
esoc->parent = mdm->dev;
esoc->owner = THIS_MODULE;
esoc->np = pdev->dev.of_node;
set_esoc_clink_data(esoc, mdm);
ret = esoc_clink_register(esoc);
if (ret) {
dev_err(mdm->dev, "esoc registration failed\n");
return ret;
}
dev_dbg(mdm->dev, "esoc registration done\n");
init_completion(&mdm->debug_done);
INIT_WORK(&mdm->mdm_status_work, mdm_status_fn);
INIT_WORK(&mdm->restart_reason_work, mdm_get_restart_reason);
INIT_DELAYED_WORK(&mdm->mdm2ap_status_check_work, mdm2ap_status_check);
mdm->get_restart_reason = false;
mdm->debug_fail = false;
mdm->esoc = esoc;
mdm->init = 0;
return 0;
}
static struct esoc_clink_ops mdm_cops = {
.cmd_exe = mdm_cmd_exe,
.get_status = mdm_get_status,
.notify = mdm_notify,
};
static struct mdm_ops mdm9x25_ops = {
.clink_ops = &mdm_cops,
.config_hw = mdm9x25_setup_hw,
.pon_ops = &mdm9x25_pon_ops,
};
static struct mdm_ops mdm9x35_ops = {
.clink_ops = &mdm_cops,
.config_hw = mdm9x35_setup_hw,
.pon_ops = &mdm9x35_pon_ops,
};
static struct mdm_ops mdm9x55_ops = {
.clink_ops = &mdm_cops,
.config_hw = mdm9x55_setup_hw,
.pon_ops = &mdm9x55_pon_ops,
};
static const struct of_device_id mdm_dt_match[] = {
{ .compatible = "qcom,ext-mdm9x25",
.data = &mdm9x25_ops, },
{ .compatible = "qcom,ext-mdm9x35",
.data = &mdm9x35_ops, },
{ .compatible = "qcom,ext-mdm9x55",
.data = &mdm9x55_ops, },
{},
};
MODULE_DEVICE_TABLE(of, mdm_dt_match);
static int mdm_probe(struct platform_device *pdev)
{
const struct of_device_id *match;
const struct mdm_ops *mdm_ops;
struct device_node *node = pdev->dev.of_node;
struct mdm_ctrl *mdm;
match = of_match_node(mdm_dt_match, node);
if (IS_ERR_OR_NULL(match))
return PTR_ERR(match);
mdm_ops = match->data;
mdm = devm_kzalloc(&pdev->dev, sizeof(*mdm), GFP_KERNEL);
if (IS_ERR_OR_NULL(mdm))
return PTR_ERR(mdm);
return mdm_ops->config_hw(mdm, mdm_ops, pdev);
}
static struct platform_driver mdm_driver = {
.probe = mdm_probe,
.driver = {
.name = "ext-mdm",
.owner = THIS_MODULE,
.of_match_table = of_match_ptr(mdm_dt_match),
},
};
static int __init mdm_register(void)
{
return platform_driver_register(&mdm_driver);
}
module_init(mdm_register);
static void __exit mdm_unregister(void)
{
platform_driver_unregister(&mdm_driver);
}
module_exit(mdm_unregister);
MODULE_LICENSE("GPL v2");