Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3)  * Copyright (c) 2019, Fuzhou Rockchip Electronics Co., Ltd.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  * Rockchip rm310 driver for 4g modem
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10) #include <linux/kthread.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11) #include <linux/i2c.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) #include <linux/irq.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) #include <linux/gpio.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) #include <linux/input.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) #include <linux/platform_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) #include <linux/fs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) #include <linux/uaccess.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) #include <linux/miscdevice.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) #include <linux/circ_buf.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) #include <linux/miscdevice.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) #include <linux/gpio.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) #include <dt-bindings/gpio/gpio.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) #include <linux/delay.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) #include <linux/poll.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) #include <linux/wait.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) #include <linux/wakelock.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) #include <linux/workqueue.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) #include <linux/lte.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) #include <linux/of.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) #include <linux/of_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) #include <linux/of_gpio.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) #define LOG(x...)   pr_info("[4g_modem]: " x)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) static struct lte_data *gpdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) static struct class *modem_class;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) static int modem_status = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) static int modem_poweron_off(int on_off)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) 	struct lte_data *pdata = gpdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) 	if (pdata) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) 		if (on_off) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) 			LOG("%s: 4g modem power up.\n", __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) 			if (pdata->vbat_gpio) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) 				gpiod_direction_output(pdata->vbat_gpio, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) 				msleep(2000);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) 			}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) 			if (pdata->power_gpio) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) 				gpiod_direction_output(pdata->power_gpio, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) 				msleep(50);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) 				gpiod_direction_output(pdata->power_gpio, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) 				msleep(400);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 				gpiod_direction_output(pdata->power_gpio, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) 			}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) 		} else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 			LOG("%s: 4g modem power down.\n", __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) 			if (pdata->power_gpio) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) 				gpiod_direction_output(pdata->power_gpio, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) 				msleep(100);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 				gpiod_direction_output(pdata->power_gpio, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) 				msleep(1000);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 				gpiod_direction_output(pdata->power_gpio, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) 				msleep(400);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) 			}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 			if (pdata->vbat_gpio)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) 				gpiod_direction_output(pdata->vbat_gpio, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) static ssize_t modem_status_store(struct class *cls,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) 				  struct class_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 				  const char *buf, size_t count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 	int new_state, ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 	ret = kstrtoint(buf, 10, &new_state);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 	if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 		LOG("%s: kstrtoint error return %d\n", __func__, ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 		return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 	if (new_state == modem_status)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) 		return count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 	if (new_state == 1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) 		LOG("%s, c(%d), open modem.\n", __func__, new_state);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 		modem_poweron_off(1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 	} else if (new_state == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 		LOG("%s, c(%d), close modem.\n", __func__, new_state);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 		modem_poweron_off(0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 	} else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) 		LOG("%s, invalid parameter.\n", __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) 	modem_status = new_state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) 	return count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) static ssize_t modem_status_show(struct class *cls,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 				 struct class_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 				 char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 	return sprintf(buf, "%d\n", modem_status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) static CLASS_ATTR_RW(modem_status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) static int modem_platdata_parse_dt(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 				   struct lte_data *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 	struct device_node *node = dev->of_node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 	int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 	if (!node)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 		return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 	memset(data, 0, sizeof(*data));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 	LOG("%s: LTE modem power controlled by gpio.\n", __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 	data->vbat_gpio = devm_gpiod_get_optional(dev, "4G,vbat",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 						  GPIOD_OUT_HIGH);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 	if (IS_ERR(data->vbat_gpio)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) 		ret = PTR_ERR(data->vbat_gpio);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 		dev_err(dev, "failed to request 4G,vbat GPIO: %d\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 		return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 	data->power_gpio = devm_gpiod_get_optional(dev, "4G,power",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) 						   GPIOD_OUT_HIGH);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) 	if (IS_ERR(data->power_gpio)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) 		ret = PTR_ERR(data->power_gpio);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 		dev_err(dev, "failed to request 4G,power GPIO: %d\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 		return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 	data->reset_gpio = devm_gpiod_get_optional(dev, "4G,reset",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 						   GPIOD_OUT_LOW);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) 	if (IS_ERR(data->reset_gpio)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 		ret = PTR_ERR(data->reset_gpio);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 		dev_err(dev, "failed to request 4G,reset GPIO: %d\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) 		return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) static int modem_power_on_thread(void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) 	modem_poweron_off(1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) static int lte_probe(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 	struct lte_data *pdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 	struct task_struct *kthread;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 	int ret = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) 	pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 	if (!pdata)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 		return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 	ret = modem_platdata_parse_dt(&pdev->dev, pdata);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 	if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 		LOG("%s: No lte platform data specified\n", __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 		goto err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) 	gpdata = pdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 	pdata->dev = &pdev->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 	if (pdata->reset_gpio)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 		gpiod_direction_output(pdata->reset_gpio, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 	kthread = kthread_run(modem_power_on_thread, NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 			      "modem_power_on_thread");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 	if (IS_ERR(kthread)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 		LOG("%s: create modem_power_on_thread failed.\n",  __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 		ret = PTR_ERR(kthread);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) 		goto err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) err:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 	gpdata = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) 	return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) static int lte_suspend(struct platform_device *pdev, pm_message_t state)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) static int lte_resume(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) static int lte_remove(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 	struct lte_data *pdata = gpdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) 	if (pdata->power_gpio) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 		msleep(100);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) 		gpiod_direction_output(pdata->power_gpio, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) 		msleep(750);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) 		gpiod_direction_output(pdata->power_gpio, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) 	if (pdata->vbat_gpio)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 		gpiod_direction_output(pdata->vbat_gpio, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 	gpdata = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) static const struct of_device_id modem_platdata_of_match[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) 	{ .compatible = "4g-modem-platdata" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) 	{ }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) MODULE_DEVICE_TABLE(of, modem_platdata_of_match);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) static struct platform_driver rm310_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 	.probe		= lte_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) 	.remove		= lte_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 	.suspend	= lte_suspend,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 	.resume		= lte_resume,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) 	.driver	= {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) 		.name	= "4g-modem-platdata",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) 		.of_match_table = of_match_ptr(modem_platdata_of_match),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) static int __init rm310_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) 	int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) 	modem_class = class_create(THIS_MODULE, "rk_modem");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) 	ret =  class_create_file(modem_class, &class_attr_modem_status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) 	if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) 		LOG("Fail to create class modem_status.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) 	return platform_driver_register(&rm310_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) static void __exit rm310_exit(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) 	platform_driver_unregister(&rm310_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) late_initcall(rm310_init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) module_exit(rm310_exit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) MODULE_AUTHOR("xuxuehui <xxh@rock-chips.com>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) MODULE_AUTHOR("Alex Zhao <zzc@rock-chips.com>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) MODULE_DESCRIPTION("RM310 lte modem driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) MODULE_LICENSE("GPL");