mirror of https://github.com/OpenIPC/firmware.git
396 lines
10 KiB
Diff
396 lines
10 KiB
Diff
diff -drupN a/drivers/misc/sunxi-rf/sunxi-bluetooth.c b/drivers/misc/sunxi-rf/sunxi-bluetooth.c
|
|
--- a/drivers/misc/sunxi-rf/sunxi-bluetooth.c 1970-01-01 03:00:00.000000000 +0300
|
|
+++ b/drivers/misc/sunxi-rf/sunxi-bluetooth.c 2022-06-12 05:28:14.000000000 +0300
|
|
@@ -0,0 +1,391 @@
|
|
+#include <linux/kernel.h>
|
|
+#include <linux/types.h>
|
|
+#include <linux/module.h>
|
|
+#include <linux/init.h>
|
|
+#include <linux/gpio.h>
|
|
+#include <linux/err.h>
|
|
+#include <linux/device.h>
|
|
+#include <linux/delay.h>
|
|
+#include <linux/of_gpio.h>
|
|
+#include <linux/clk.h>
|
|
+#include <linux/rfkill.h>
|
|
+#include <linux/regulator/consumer.h>
|
|
+#include <linux/platform_device.h>
|
|
+#include <linux/sunxi-gpio.h>
|
|
+#include "sunxi-rfkill.h"
|
|
+
|
|
+static int sunxi_bt_on(struct sunxi_bt_platdata *data, bool on_off)
|
|
+{
|
|
+ struct platform_device *pdev = data->pdev;
|
|
+ struct device *dev = &pdev->dev;
|
|
+ int ret = 0;
|
|
+ int i = 0;
|
|
+
|
|
+ if (!on_off && gpio_is_valid(data->gpio_bt_rst))
|
|
+ gpio_set_value(data->gpio_bt_rst, 0);
|
|
+ for (i = 0; i < (data->power_num); i++) {
|
|
+ if (data->bt_power_name[i]) {
|
|
+ data->bt_power[i] =
|
|
+ regulator_get(dev, data->bt_power_name[i]);
|
|
+ if (!IS_ERR(data->bt_power[i])) {
|
|
+ if (on_off) {
|
|
+ ret =
|
|
+ regulator_enable(data->bt_power[i]);
|
|
+ if (ret < 0) {
|
|
+ dev_err(dev,
|
|
+ "regulator bt_power enable failed\n");
|
|
+ regulator_put(data->bt_power
|
|
+ [i]);
|
|
+ return ret;
|
|
+ }
|
|
+
|
|
+ ret =
|
|
+ regulator_get_voltage(data->bt_power
|
|
+ [i]);
|
|
+ if (ret < 0) {
|
|
+ dev_err(dev,
|
|
+ "regulator bt_power get voltage failed\n");
|
|
+ regulator_put(data->bt_power
|
|
+ [i]);
|
|
+ return ret;
|
|
+ }
|
|
+ dev_info(dev,
|
|
+ "current check wlan bt_power voltage: %d\n",
|
|
+ ret);
|
|
+ if (ret < data->bt_power_voltage) {
|
|
+ ret =
|
|
+ regulator_set_voltage(data->
|
|
+ bt_power
|
|
+ [i],
|
|
+ data->
|
|
+ bt_power_voltage,
|
|
+ data->
|
|
+ bt_power_voltage);
|
|
+ dev_info(dev,
|
|
+ "set wlan bt_power voltage: %d\n",
|
|
+ data->
|
|
+ bt_power_voltage);
|
|
+ }
|
|
+ } else {
|
|
+ ret =
|
|
+ regulator_disable(data->bt_power
|
|
+ [i]);
|
|
+ if (ret < 0) {
|
|
+ dev_err(dev,
|
|
+ "regulator bt_power disable failed\n");
|
|
+ regulator_put(data->bt_power
|
|
+ [i]);
|
|
+ return ret;
|
|
+ }
|
|
+ }
|
|
+ regulator_put(data->bt_power[i]);
|
|
+ }
|
|
+ }
|
|
+ }
|
|
+
|
|
+ if (data->io_regulator_name) {
|
|
+ data->io_regulator =
|
|
+ regulator_get(dev, data->io_regulator_name);
|
|
+ if (!IS_ERR(data->io_regulator)) {
|
|
+ if (on_off) {
|
|
+ ret = regulator_enable(data->io_regulator);
|
|
+ if (ret < 0) {
|
|
+ dev_err(dev,
|
|
+ "regulator io_regulator enable failed\n");
|
|
+ regulator_put(data->io_regulator);
|
|
+ return ret;
|
|
+ }
|
|
+
|
|
+ ret = regulator_get_voltage(data->io_regulator);
|
|
+ if (ret < 0) {
|
|
+ dev_err(dev,
|
|
+ "regulator io_regulator get voltage failed\n");
|
|
+ regulator_put(data->io_regulator);
|
|
+ return ret;
|
|
+ }
|
|
+
|
|
+ dev_info(dev,
|
|
+ "current check bt io regulator voltage: %d\n",
|
|
+ ret);
|
|
+ if (ret < data->bt_io_voltage) {
|
|
+ ret =
|
|
+ regulator_set_voltage(data->
|
|
+ io_regulator,
|
|
+ data->
|
|
+ bt_io_voltage,
|
|
+ data->
|
|
+ bt_io_voltage);
|
|
+ dev_info(dev,
|
|
+ "set bt io regulator voltage: %d\n",
|
|
+ data->bt_io_voltage);
|
|
+ }
|
|
+
|
|
+ } else {
|
|
+ ret = regulator_disable(data->io_regulator);
|
|
+ if (ret < 0) {
|
|
+ dev_err(dev,
|
|
+ "regulator io_regulator disable failed\n");
|
|
+ regulator_put(data->io_regulator);
|
|
+ return ret;
|
|
+ }
|
|
+ }
|
|
+ regulator_put(data->io_regulator);
|
|
+ }
|
|
+ }
|
|
+
|
|
+ if (on_off && gpio_is_valid(data->gpio_bt_rst)) {
|
|
+ mdelay(10);
|
|
+ gpio_set_value(data->gpio_bt_rst, 1);
|
|
+ }
|
|
+ data->power_state = on_off;
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+static int sunxi_bt_set_block(void *data, bool blocked)
|
|
+{
|
|
+ struct sunxi_bt_platdata *platdata = data;
|
|
+ struct platform_device *pdev = platdata->pdev;
|
|
+ int ret;
|
|
+
|
|
+ if (blocked != platdata->power_state) {
|
|
+ dev_warn(&pdev->dev, "block state already is %d\n", blocked);
|
|
+ return 0;
|
|
+ }
|
|
+
|
|
+ dev_info(&pdev->dev, "set block: %d\n", blocked);
|
|
+ ret = sunxi_bt_on(platdata, !blocked);
|
|
+ if (ret) {
|
|
+ dev_err(&pdev->dev, "set block failed\n");
|
|
+ return ret;
|
|
+ }
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+static const struct rfkill_ops sunxi_bt_rfkill_ops = {
|
|
+ .set_block = sunxi_bt_set_block,
|
|
+};
|
|
+
|
|
+static int sunxi_bt_probe(struct platform_device *pdev)
|
|
+{
|
|
+ struct pinctrl *pinctrl;
|
|
+ struct device_node *np = pdev->dev.of_node;
|
|
+ struct device *dev = &pdev->dev;
|
|
+ struct sunxi_bt_platdata *data;
|
|
+ struct gpio_config config;
|
|
+ const char *power, *io_regulator, *clocks;
|
|
+ int ret = 0, i = 0, j = 0;
|
|
+ u32 val;
|
|
+ char bt_name_buf[64] = { 0 }, s[64] = {
|
|
+ 0};
|
|
+
|
|
+ data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
|
|
+ if (!dev)
|
|
+ return -ENOMEM;
|
|
+
|
|
+ data->pdev = pdev;
|
|
+ data->power_num = -1;
|
|
+ if (!of_property_read_u32(np, "bt_power_num", &val)) {
|
|
+ switch (val) {
|
|
+ case 1:
|
|
+ case 2:
|
|
+ case 3:
|
|
+ case 4:
|
|
+ case 5:
|
|
+ data->power_num = val;
|
|
+ break;
|
|
+ default:
|
|
+ dev_err(dev, "unsupported bt_power_num (%u)\n", val);
|
|
+ return -EINVAL;
|
|
+ }
|
|
+ }
|
|
+ dev_info(dev, "bt_power_num (%u)\n", val);
|
|
+
|
|
+ data->bt_power_voltage = -1;
|
|
+ if (!of_property_read_u32(np, "bt_power_voltage", &val)) {
|
|
+ data->bt_power_voltage = val;
|
|
+ dev_err(dev, "bt power voltage (%u)\n", val);
|
|
+ }
|
|
+
|
|
+ data->bt_io_voltage = -1;
|
|
+ if (!of_property_read_u32(np, "bt_io_voltage", &val)) {
|
|
+ data->bt_io_voltage = val;
|
|
+ dev_err(dev, "bt io voltage (%u)\n", val);
|
|
+ }
|
|
+
|
|
+ data->bt_power_name =
|
|
+ devm_kzalloc(dev, (data->power_num) * sizeof(char *), GFP_KERNEL);
|
|
+ for (i = 0; i < (data->power_num); i++) {
|
|
+ sprintf(s, "bt_power%d", i + 1);
|
|
+ strcpy(bt_name_buf, s);
|
|
+ if (of_property_read_string(np, bt_name_buf, &power)) {
|
|
+ dev_warn(dev, "Missing bt_power.\n");
|
|
+ } else {
|
|
+ data->bt_power_name[i] =
|
|
+ devm_kzalloc(dev, 64, GFP_KERNEL);
|
|
+ if (!data->bt_power_name[i]) {
|
|
+ for (j = 0; j < i; j++)
|
|
+ devm_kfree(dev, data->bt_power_name[j]);
|
|
+
|
|
+ devm_kfree(dev, data->bt_power_name);
|
|
+ return -ENOMEM;
|
|
+ } else
|
|
+ strcpy(data->bt_power_name[i], power);
|
|
+ }
|
|
+ dev_info(dev, "bt_power_name (%s)\n", data->bt_power_name[i]);
|
|
+ }
|
|
+
|
|
+ if (of_property_read_string(np, "bt_io_regulator", &io_regulator)) {
|
|
+ dev_warn(dev, "Missing bt_io_regulator.\n");
|
|
+ } else {
|
|
+ data->io_regulator_name = devm_kzalloc(dev, 64, GFP_KERNEL);
|
|
+ if (!data->io_regulator_name) {
|
|
+ ret = -ENOMEM;
|
|
+ goto end;
|
|
+ } else
|
|
+ strcpy(data->io_regulator_name, io_regulator);
|
|
+ }
|
|
+ dev_info(dev, "io_regulator_name (%s)\n", data->io_regulator_name);
|
|
+
|
|
+ /* request device pinctrl, set as default state */
|
|
+ pinctrl = devm_pinctrl_get_select_default(&pdev->dev);
|
|
+ if (IS_ERR_OR_NULL(pinctrl)) {
|
|
+ dev_err(dev, "request pincrtl handle for device [%s] failed\n",
|
|
+ dev_name(&pdev->dev));
|
|
+ }
|
|
+
|
|
+ data->gpio_bt_rst =
|
|
+ of_get_named_gpio_flags(np, "bt_rst_n", 0,
|
|
+ (enum of_gpio_flags *)&config);
|
|
+ if (!gpio_is_valid(data->gpio_bt_rst)) {
|
|
+ dev_err(dev, "get gpio bt_rst failed\n");
|
|
+ } else {
|
|
+ dev_info(dev,
|
|
+ "bt_rst gpio=%d mul-sel=%d pull=%d drv_level=%d data=%d\n",
|
|
+ config.gpio, config.mul_sel, config.pull,
|
|
+ config.drv_level, config.data);
|
|
+
|
|
+ ret = devm_gpio_request(dev, data->gpio_bt_rst, "bt_rst");
|
|
+ if (ret < 0) {
|
|
+ dev_err(dev, "can't request bt_rst gpio %d\n",
|
|
+ data->gpio_bt_rst);
|
|
+ goto end;
|
|
+ }
|
|
+
|
|
+ ret = gpio_direction_output(data->gpio_bt_rst, 0);
|
|
+ if (ret < 0) {
|
|
+ dev_err(dev,
|
|
+ "can't request output direction bt_rst gpio %d\n",
|
|
+ data->gpio_bt_rst);
|
|
+ goto end;
|
|
+ }
|
|
+ }
|
|
+
|
|
+ if (of_property_read_string(np, "clocks", &clocks)) {
|
|
+ dev_warn(dev, "Missing clocks.\n");
|
|
+ } else {
|
|
+ data->clk_name = devm_kzalloc(dev, 64, GFP_KERNEL);
|
|
+ if (!data->clk_name) {
|
|
+ ret = -ENOMEM;
|
|
+ goto end;
|
|
+ } else
|
|
+ strcpy(data->clk_name, clocks);
|
|
+ }
|
|
+ dev_info(dev, "clk_name (%s)\n", data->clk_name);
|
|
+
|
|
+ data->lpo = devm_clk_get(dev, data->clk_name);
|
|
+ if (IS_ERR_OR_NULL(data->lpo)) {
|
|
+ dev_warn(dev, "clk not config\n");
|
|
+ } else {
|
|
+ ret = clk_prepare_enable(data->lpo);
|
|
+ if (ret < 0)
|
|
+ dev_warn(dev, "can't enable clk\n");
|
|
+ }
|
|
+
|
|
+ data->rfkill = rfkill_alloc("sunxi-bt", dev, RFKILL_TYPE_BLUETOOTH,
|
|
+ &sunxi_bt_rfkill_ops, data);
|
|
+ if (!data->rfkill) {
|
|
+ for (i = 0; i < (data->power_num); i++)
|
|
+ devm_kfree(dev, data->bt_power_name[i]);
|
|
+ devm_kfree(dev, data->bt_power_name);
|
|
+ ret = -ENOMEM;
|
|
+ goto failed_alloc;
|
|
+ }
|
|
+
|
|
+ rfkill_set_states(data->rfkill, true, false);
|
|
+
|
|
+ ret = rfkill_register(data->rfkill);
|
|
+ if (ret) {
|
|
+ for (i = 0; i < (data->power_num); i++)
|
|
+ devm_kfree(dev, data->bt_power_name[i]);
|
|
+ devm_kfree(dev, data->bt_power_name);
|
|
+ goto fail_rfkill;
|
|
+ }
|
|
+end:
|
|
+ if (ret != 0) {
|
|
+ for (i = 0; i < (data->power_num); i++)
|
|
+ devm_kfree(dev, data->bt_power_name[i]);
|
|
+ devm_kfree(dev, data->bt_power_name);
|
|
+ return ret;
|
|
+ }
|
|
+ data->bt_power =
|
|
+ devm_kzalloc(dev, (data->power_num) * sizeof(struct regulator *),
|
|
+ GFP_KERNEL);
|
|
+ platform_set_drvdata(pdev, data);
|
|
+
|
|
+ data->power_state = 0;
|
|
+ return 0;
|
|
+
|
|
+fail_rfkill:
|
|
+ if (data->rfkill)
|
|
+ rfkill_destroy(data->rfkill);
|
|
+failed_alloc:
|
|
+ if (!IS_ERR_OR_NULL(data->lpo))
|
|
+ clk_disable_unprepare(data->lpo);
|
|
+ return ret;
|
|
+}
|
|
+
|
|
+static int sunxi_bt_remove(struct platform_device *pdev)
|
|
+{
|
|
+ struct sunxi_bt_platdata *data = platform_get_drvdata(pdev);
|
|
+ struct rfkill *rfk = data->rfkill;
|
|
+ int i = 0;
|
|
+
|
|
+ devm_kfree(&pdev->dev, data->bt_power);
|
|
+ for (i = 0; i < (data->power_num); i++)
|
|
+ devm_kfree(&pdev->dev, data->bt_power_name[i]);
|
|
+ devm_kfree(&pdev->dev, data->bt_power_name);
|
|
+
|
|
+ platform_set_drvdata(pdev, NULL);
|
|
+
|
|
+ if (rfk) {
|
|
+ rfkill_unregister(rfk);
|
|
+ rfkill_destroy(rfk);
|
|
+ }
|
|
+
|
|
+ if (!IS_ERR_OR_NULL(data->lpo))
|
|
+ clk_disable_unprepare(data->lpo);
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+static const struct of_device_id sunxi_bt_ids[] = {
|
|
+ {.compatible = "allwinner,sunxi-bt"},
|
|
+ { /* Sentinel */ }
|
|
+};
|
|
+
|
|
+static struct platform_driver sunxi_bt_driver = {
|
|
+ .probe = sunxi_bt_probe,
|
|
+ .remove = sunxi_bt_remove,
|
|
+ .driver = {
|
|
+ .owner = THIS_MODULE,
|
|
+ .name = "sunxi-bt",
|
|
+ .of_match_table = sunxi_bt_ids,
|
|
+ },
|
|
+};
|
|
+
|
|
+module_platform_driver(sunxi_bt_driver);
|
|
+
|
|
+MODULE_DESCRIPTION("sunxi bluetooth driver");
|
|
+MODULE_LICENSE("GPL");
|