11. dts配置

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一、dts學習（注：pin 包括但不屬於 gpio）
1.gpio0 node編寫方法：
gpio0: gpio@0 {
pins_cmd_dat {
pins = <PINMUX_GPIO0__FUNC_IDDIG>; //模式
slew-rate = <0>; //方向0--in 1--out
bias-pull-down = <11>; //pull使能，並且pull-down【<11>功能保留，寫<00>也行】
bias-disable; //pull失能，與bias-pull-down/up衝突
output-low; //設置輸出low，可以output-high【方向爲out纔有效】
input-schmitt-enable = <0>;
};
};
2.配置pin腳用到的
Y:\code10\mt6737_M0_MP1_V2_84\kernel-3.18\drivers\pinctrl\pinconf-generic.c
static struct pinconf_generic_dt_params dt_params[] = {
{ "bias-disable", PIN_CONFIG_BIAS_DISABLE, 0 },
{ "bias-high-impedance", PIN_CONFIG_BIAS_HIGH_IMPEDANCE, 0 },
{ "bias-bus-hold", PIN_CONFIG_BIAS_BUS_HOLD, 0 },
{ "bias-pull-up", PIN_CONFIG_BIAS_PULL_UP, 1 },
{ "bias-pull-down", PIN_CONFIG_BIAS_PULL_DOWN, 1 },
{ "bias-pull-pin-default", PIN_CONFIG_BIAS_PULL_PIN_DEFAULT, 1 },
{ "drive-push-pull", PIN_CONFIG_DRIVE_PUSH_PULL, 0 },
{ "drive-open-drain", PIN_CONFIG_DRIVE_OPEN_DRAIN, 0 },
{ "drive-open-source", PIN_CONFIG_DRIVE_OPEN_SOURCE, 0 },
{ "drive-strength", PIN_CONFIG_DRIVE_STRENGTH, 0 },
{ "input-enable", PIN_CONFIG_INPUT_ENABLE, 1 },
{ "input-disable", PIN_CONFIG_INPUT_ENABLE, 0 },
{ "input-schmitt-enable", PIN_CONFIG_INPUT_SCHMITT_ENABLE, 1 },
{ "input-schmitt-disable", PIN_CONFIG_INPUT_SCHMITT_ENABLE, 0 },
{ "input-debounce", PIN_CONFIG_INPUT_DEBOUNCE, 0 },
{ "power-source", PIN_CONFIG_POWER_SOURCE, 0 },
{ "low-power-enable", PIN_CONFIG_LOW_POWER_MODE, 1 },
{ "low-power-disable", PIN_CONFIG_LOW_POWER_MODE, 0 },
{ "output-low", PIN_CONFIG_OUTPUT, 0, },
{ "output-high", PIN_CONFIG_OUTPUT, 1, },
{ "slew-rate", PIN_CONFIG_SLEW_RATE, 0},
};
二、一個alsps的dts配置與調用示例（epl259x.c）
1.dts配置
1.1.mt6735m.dtsi
/{
alsps:als_ps@0 { //alsps node
compatible = "mediatek,als_ps";
};
};
1.2.dts
&alsps { //加&表示引用別處定義的node （dtsi中 alsps node）
pinctrl-names = "pin_default", "pin_cfg"; //
pinctrl-0 = <&alsps_intpin_default>; //默認配置
pinctrl-1 = <&alsps_intpin_cfg>; //alsps GPIO中斷配置
status = "okay";
};
&pio {
alsps_intpin_cfg: alspspincfg { //alsps_intpin_cfg,在driver中pinctrl_lookup_state()用到
pins_cmd_dat {
pins = <PINMUX_GPIO4__FUNC_GPIO4>; //模式
slew-rate = <0>; //方向0--in 1--out
bias-pull-up = <00>;
};
};
alsps_intpin_default: alspsdefaultcfg { //
};
};
2.驅動中調用dts
Y:\code10\mt6737_M0_MP1_V2_84\kernel-3.18\drivers\misc\mediatek\alsps\epl259x\epl259x.c
void epl_sensor_update_mode(struct i2c_client *client)
{
struct pinctrl *pinctrl; //定義一個pin腳指針
struct pinctrl_state *pins_default; //
struct pinctrl_state *pins_cfg;
struct platform_device *alsps_pdev = get_alsps_platformdev(); //獲取平臺設備alsps（dtsi的 alsps node會create as a platform device）
pinctrl = devm_pinctrl_get(&alsps_pdev->dev); //從平臺設備alsps 獲取pin
pins_default = pinctrl_lookup_state(pinctrl, "pin_default"); //獲取 pin 默認配置
pins_cfg = pinctrl_lookup_state(pinctrl, "pin_cfg"); //獲取 pin 配置
pinctrl_select_state(pinctrl, pins_cfg); //設置pin模式
}
3.adb 查看pin腳模式
cat /sys/class/misc/mygpio/pin
PIN:MODE,PULL_SEL,DIN,DOUT,PULL EN,DIR,IES,SMT
0: 1 1 1 0 1 0 1 0
1: 0 0 0 0 1 0 1 0
三、i2c的dts配置與調用示例（gt1x_tpd.c）
1.codegen.dws與cust_i2c.dtsi
Y:\code8\mt6737_M0_MP1_V2_84\out\target\product\len6737m_35_m0\obj\PRELOADER_OBJ\inc\cust_i2c.dtsi(codegen.dws編譯生成)
&i2c1 { //i2c控制器:i2c1
CAP_TOUCH@5D { //i2c從設備:CAP_TOUCH
compatible = "mediatek,CAP_TOUCH"; //
reg = <0x5D>; //i2c從設備地址
};
I2C_LCD_BIAS@3E { //i2c從設備:I2C_LCD_BIAS
compatible = "mediatek,I2C_LCD_BIAS";
reg = <0x3E>;
};
};
2.gt1x_tpd.c
Y:\code8\mt6737_M0_MP1_V2_84\kernel-3.18\drivers\input\touchscreen\mediatek\GT1X\gt1x_tpd.c
static const struct of_device_id gt1x_dt_match[] = {
{.compatible = "mediatek,CAP_TOUCH"}, //用於匹配平臺設備"mediatek,CAP_TOUCH"與dts/dws相同
{},
};
static struct i2c_driver tpd_i2c_driver = {
.probe = tpd_i2c_probe,
.remove = tpd_i2c_remove,
.detect = tpd_i2c_detect,
.driver = {
.name = GTP_DRIVER_NAME,
.of_match_table = gt1x_dt_match, //用於匹配平臺設備
},
.id_table = tpd_i2c_id,
.address_list = (const unsigned short *)forces,
};
四、EINT
1.mt6735m.dtsi
/{ //根節點
bus{ //
touch: touch@ { //touch node 隸屬於bus節點
compatible = "mediatek,mt6735-touch",
"mediatek,mt6735m-touch";
vtouch-supply = <&mt_pmic_vgp1_ldo_reg>;
};
}
}
2.cust_eint.dtsi
Y:\code8\mt6737_M0_MP1_V2_84\out\target\product\len6737m_35_m0\obj\PRELOADER_OBJ\inc\cust_eint.dtsi(codegen.dws編譯生成)
&touch {
interrupt-parent = <&eintc>;
interrupts = <10 IRQ_TYPE_EDGE_FALLING>;
debounce = <10 0>;
status = "okay";
};
3.tp驅動中request_irq
3.1 gt9xx_driver.c
Y:\code8\mt6737_M0_MP1_V2_84\kernel-3.18\drivers\input\touchscreen\mediatek\GT911\gt9xx_driver.c
static int tpd_irq_registration(void)
{
struct device_node *node = NULL;
node = of_find_compatible_node(NULL, NULL, "mediatek,cap_touch"); //從dts node中獲取node信息
...
}
3.2 gt1x_tpd.c
Y:\code8\mt6737_M0_MP1_V2_84\kernel-3.18\drivers\input\touchscreen\mediatek\GT1X\gt1x_tpd.c
static int tpd_irq_registration(void)
{
struct device_node *node = NULL;
node = of_find_matching_node(node, touch_of_match); //touch_of_match是一個匹配數組,匹配node
of_property_read_u32_array(node , "debounce", ints, ARRAY_SIZE(ints)); //從dws/dts獲取debounce信息
gpio_set_debounce(ints[0], ints[1]); //設置debounce信息（去抖動延時）
tpd_touch_irq = irq_of_parse_and_map(node, 0); //獲取irq number
request_irq(tpd_touch_irq, (irq_handler_t)tpd_eint_interrupt_handler, //申請中斷
IRQF_TRIGGER_RISING, "TOUCH_PANEL-eint", NULL);(node, 0);
...
}
#ifdef GTP_CONFIG_OF
enable_irq(tpd_touch_irq); //enable_irq與disable_irq要成對存在
#ifdef GTP_CONFIG_OF
disable_irq(tpd_touch_irq);
Y:\code10\mt6737_M0_MP1_V2_84\kernel-3.18\drivers\input\touchscreen\mediatek\mtk_tpd.c
struct of_device_id touch_of_match[] = { //touch_of_match是一個匹配數組
{ .compatible = "mediatek,mt6735-touch", },
{ .compatible = "mediatek,mt6580-touch", },
{ .compatible = "mediatek,mt8173-touch", },
{ .compatible = "mediatek,mt6755-touch", },
{ .compatible = "mediatek,mt6797-touch", },
{ .compatible = "mediatek,mt8163-touch", },
{},
};
14_2.DTS-Touch_Panel
1.dts中
1.1. mt6735m.dtsi
Y:\code8\mt6737_M0_MP1_V2_84\out\target\product\len6737m_35_m0\obj\PRELOADER_OBJ\inc\cust_pmic.dtsi
touch: touch@ {
compatible = "mediatek,mt6735-touch",
"mediatek,mt6735m-touch";
vtouch-supply = <&mt_pmic_vgp1_ldo_reg>;
};
1.2. Y:\code8\mt6737_M0_MP1_V2_84\out\target\product\len6737m_35_m0\obj\PRELOADER_OBJ\inc\cust_pmic.dtsi(codegen.dws生成)
&touch {
vtouch-supply = <&mt_pmic_vgp1_ldo_reg>;
status = "okay";
};
1.3. Y:\code8\mt6737_M0_MP1_V2_84\out\target\product\len6737m_35_m0\obj\PRELOADER_OBJ\inc\cust_i2c.dtsi(codegen.dws生成)
&i2c1 {
cap_touch@5d {
compatible = "mediatek,cap_touch";
reg = <0x5d>;
};
}；
1.4. Y:\code8\mt6737_M0_MP1_V2_84\out\target\product\len6737m_35_m0\obj\PRELOADER_OBJ\inc\cust_eint.dtsi(codegen.dws編譯生成)
&touch {
interrupt-parent = <&eintc>;
interrupts = <10 IRQ_TYPE_EDGE_FALLING>;
debounce = <10 0>;
status = "okay";
};
1.5 len6737m_35_m0.dts
&touch {
tpd-resolution = <720 1280>; //tp分辨率
use-tpd-button = <1>; //tp虛擬按鍵使能
tpd-key-num = <3>; //tp虛擬按鍵個數
tpd-key-local= <139 172 158 0>; //3個虛擬按鍵參數（第4個爲0）
tpd-key-dim-local = <100 1550 100 100 360 1550 100 100 620 1550 100 100 0 0 0 0>; //3個虛擬按鍵參數（第4個爲0）
//4*4(x,y,weith,height)
tpd-max-touch-num = <5>; //5點觸控
tpd-filter-enable = <1>; //tp過濾器使能
tpd-filter-pixel-density = <124>; //tp過濾器像素密度
tpd-filter-custom-prameters = <0 0 0 0 0 0 0 0 0 0 0 0>;
tpd-filter-custom-speed = <0 0 0>;
pinctrl-names = "default", "state_eint_as_int", "state_eint_output0", "state_eint_output1",
"state_rst_output0", "state_rst_output1";
pinctrl-0 = <&CTP_pins_default>;
pinctrl-1 = <&CTP_pins_eint_as_int>;
pinctrl-2 = <&CTP_pins_eint_output0>;
pinctrl-3 = <&CTP_pins_eint_output1>;
pinctrl-4 = <&CTP_pins_rst_output0>;
pinctrl-5 = <&CTP_pins_rst_output1>;
status = "okay";
};
2.tp驅動中
2.1 request_irq
Y:\code8\mt6737_M0_MP1_V2_84\kernel-3.18\drivers\input\touchscreen\mediatek\GT1X\gt1x_tpd.c
static int tpd_irq_registration(void)
{
struct device_node *node = NULL;
node = of_find_matching_node(node, touch_of_match); //touch_of_match是一個匹配數組
of_property_read_u32_array(node , "debounce", ints, ARRAY_SIZE(ints)); //從dws/dts獲取debounce信息
gpio_set_debounce(ints[0], ints[1]); //設置debounce信息（去抖動延時）
tpd_touch_irq = irq_of_parse_and_map(node, 0); //獲取irq number
request_irq(tpd_touch_irq, (irq_handler_t)tpd_eint_interrupt_handler, //申請中斷
IRQF_TRIGGER_RISING, "TOUCH_PANEL-eint", NULL);(node, 0);
...
}
2.2 tp獲取property信息--of_property_read_u32()
Y:\code8\mt6737_M0_MP1_V2_84\kernel-3.18\drivers\input\touchscreen\mediatek\GT1X\gt1x_tpd.c
static int __init tpd_driver_init(void)
{
GTP_INFO(" Goodix touch panel driver init.");
tpd_get_dts_info(); //tp獲取dts信息---tpd_get_dts_info()
if (tpd_driver_add(&tpd_device_driver) < 0)
GTP_INFO("add generic driver failed\n");
return 0;
}
Y:\code10\mt6737_M0_MP1_V2_84\kernel-3.18\drivers\input\touchscreen\mediatek\mtk_tpd.c
struct of_device_id touch_of_match[] = { //touch_of_match是一個匹配數組
{ .compatible = "mediatek,mt6735-touch", },
{ .compatible = "mediatek,mt6580-touch", },
{ .compatible = "mediatek,mt8173-touch", },
{ .compatible = "mediatek,mt6755-touch", },
{ .compatible = "mediatek,mt6797-touch", },
{ .compatible = "mediatek,mt8163-touch", },
{},
};
struct tpd_filter_t tpd_filter;
struct tpd_dts_info tpd_dts_data; //在對應的tpd.h中用extern修改鏈接屬性
void tpd_get_dts_info(void)
{
struct device_node *node1 = NULL;
int key_dim_local[16], i;
node1 = of_find_matching_node(node1, touch_of_match); //touch_of_match是一個匹配數組,匹配node
if (node1) { //這是一個全局變量---tpd_dts_data（touchscreen\mediatek\tpd.h）
of_property_read_u32(node1, "tpd-key-dim-local", &tpd_dts_data.touch_max_num); //獲取node屬性---of_property_read_u32();
of_property_read_u32(node1, "use-tpd-button", &tpd_dts_data.use_tpd_button);
pr_info("[tpd]use-tpd-button = %d\n", tpd_dts_data.use_tpd_button);
of_property_read_u32_array(node1, "tpd-resolution", //獲取node屬性數組---of_property_read_u32_array();
tpd_dts_data.tpd_resolution, ARRAY_SIZE(tpd_dts_data.tpd_resolution));
if (tpd_dts_data.use_tpd_button) {
of_property_read_u32(node1, "tpd-key-num", &tpd_dts_data.tpd_key_num);
of_property_read_u32_array(node1, "tpd-key-local",
tpd_dts_data.tpd_key_local, ARRAY_SIZE(tpd_dts_data.tpd_key_local));
of_property_read_u32_array(node1, "tpd-key-dim-local",
key_dim_local, ARRAY_SIZE(key_dim_local));
memcpy(tpd_dts_data.tpd_key_dim_local, key_dim_local, sizeof(key_dim_local));
for (i = 0; i < 4; i++) {
pr_info("[tpd]key[%d].key_x = %d\n", i, tpd_dts_data.tpd_key_dim_local[i].key_x);
pr_info("[tpd]key[%d].key_y = %d\n", i, tpd_dts_data.tpd_key_dim_local[i].key_y);
pr_info("[tpd]key[%d].key_W = %d\n", i, tpd_dts_data.tpd_key_dim_local[i].key_width);
pr_info("[tpd]key[%d].key_H = %d\n", i, tpd_dts_data.tpd_key_dim_local[i].key_height);
}
}
of_property_read_u32(node1, "tpd-filter-enable", &tpd_dts_data.touch_filter.enable);
if (tpd_dts_data.touch_filter.enable) {
of_property_read_u32(node1, "tpd-filter-pixel-density",
&tpd_dts_data.touch_filter.pixel_density);
of_property_read_u32_array(node1, "tpd-filter-custom-prameters",
(u32 *)tpd_dts_data.touch_filter.W_W, ARRAY_SIZE(tpd_dts_data.touch_filter.W_W));
of_property_read_u32_array(node1, "tpd-filter-custom-speed",
tpd_dts_data.touch_filter.VECLOCITY_THRESHOLD,
ARRAY_SIZE(tpd_dts_data.touch_filter.VECLOCITY_THRESHOLD));
}
memcpy(&tpd_filter, &tpd_dts_data.touch_filter, sizeof(tpd_filter));
pr_info("[tpd]tpd-filter-enable = %d, pixel_density = %d\n",
tpd_filter.enable, tpd_filter.pixel_density);
} else {
pr_err("[tpd]%s can't find touch compatible custom node\n", __func__);
}
}
Y:\code10\mt6737_M0_MP1_V2_84\kernel-3.18\drivers\input\touchscreen\mediatek\tpd.h
struct tpd_key_dim_local {
int key_x;
int key_y;
int key_width;
int key_height;
};
struct tpd_filter_t {
int enable; /*0: disable, 1: enable*/
int pixel_density; /*XXX pixel/cm*/
int W_W[3][4];/*filter custom setting prameters*/
unsigned int VECLOCITY_THRESHOLD[3];/*filter speed custom settings*/
};
struct tpd_dts_info {
int tpd_resolution[2];
int touch_max_num;
int use_tpd_button;
int tpd_key_num;
int tpd_key_local[4];
struct tpd_key_dim_local tpd_key_dim_local[4];
struct tpd_filter_t touch_filter;
};
extern struct tpd_dts_info tpd_dts_data; //這是一個全局變量
2.3 tp獲取pinctrl信息--pinctrl_lookup_state()
len6737m_35_m0.dts
&touch {
...
pinctrl-names = "default", "state_eint_as_int", "state_eint_output0", "state_eint_output1",
"state_rst_output0", "state_rst_output1";
pinctrl-0 = <&CTP_pins_default>;
pinctrl-1 = <&CTP_pins_eint_as_int>;
pinctrl-2 = <&CTP_pins_eint_output0>;
pinctrl-3 = <&CTP_pins_eint_output1>;
pinctrl-4 = <&CTP_pins_rst_output0>;
pinctrl-5 = <&CTP_pins_rst_output1>;
status = "okay";
};
&pio {
CTP_pins_default: eint0default {
};
CTP_pins_eint_as_int: eint@0 {
pins_cmd_dat {
pins = <PINMUX_GPIO10__FUNC_GPIO10>;
slew-rate = <0>;
bias-disable;
};
};
CTP_pins_eint_output0: eintoutput0 {
pins_cmd_dat {
pins = <PINMUX_GPIO10__FUNC_GPIO10>;
slew-rate = <1>;
output-low;
};
};
CTP_pins_eint_output1: eintoutput1 {
pins_cmd_dat {
pins = <PINMUX_GPIO10__FUNC_GPIO10>;
slew-rate = <1>;
output-high;
};
};
CTP_pins_rst_output0: rstoutput0 {
pins_cmd_dat {
pins = <PINMUX_GPIO62__FUNC_GPIO62>;
slew-rate = <1>;
output-low;
};
};
CTP_pins_rst_output1: rstoutput1 {
pins_cmd_dat {
pins = <PINMUX_GPIO62__FUNC_GPIO62>;
slew-rate = <1>;
output-high;
};
};
};
Y:\code10\mt6737_M0_MP1_V2_84\kernel-3.18\drivers\input\touchscreen\mediatek\mtk_tpd.c
int tpd_get_gpio_info(struct platform_device *pdev)
{
int ret;
TPD_DEBUG("[tpd %d] mt_tpd_pinctrl+++++++++++++++++\n", pdev->id);
pinctrl1 = devm_pinctrl_get(&pdev->dev); //...
if (IS_ERR(pinctrl1)) {
ret = PTR_ERR(pinctrl1);
dev_err(&pdev->dev, "fwq Cannot find touch pinctrl1!\n");
return ret;
}
pins_default = pinctrl_lookup_state(pinctrl1, "default"); //獲取pinctrl屬性信息---pinctrl_lookup_state()
if (IS_ERR(pins_default)) {
ret = PTR_ERR(pins_default);
dev_err(&pdev->dev, "fwq Cannot find touch pinctrl default %d!\n", ret);
}
eint_as_int = pinctrl_lookup_state(pinctrl1, "state_eint_as_int");
if (IS_ERR(eint_as_int)) {
ret = PTR_ERR(eint_as_int);
dev_err(&pdev->dev, "fwq Cannot find touch pinctrl state_eint_as_int!\n");
return ret;
}
eint_output0 = pinctrl_lookup_state(pinctrl1, "state_eint_output0");
if (IS_ERR(eint_output0)) {
ret = PTR_ERR(eint_output0);
dev_err(&pdev->dev, "fwq Cannot find touch pinctrl state_eint_output0!\n");
return ret;
}
eint_output1 = pinctrl_lookup_state(pinctrl1, "state_eint_output1");
if (IS_ERR(eint_output1)) {
ret = PTR_ERR(eint_output1);
dev_err(&pdev->dev, "fwq Cannot find touch pinctrl state_eint_output1!\n");
return ret;
}
rst_output0 = pinctrl_lookup_state(pinctrl1, "state_rst_output0");
if (IS_ERR(rst_output0)) {
ret = PTR_ERR(rst_output0);
dev_err(&pdev->dev, "fwq Cannot find touch pinctrl state_rst_output0!\n");
return ret;
}
rst_output1 = pinctrl_lookup_state(pinctrl1, "state_rst_output1");
if (IS_ERR(rst_output1)) {
ret = PTR_ERR(rst_output1);
dev_err(&pdev->dev, "fwq Cannot find touch pinctrl state_rst_output1!\n");
return ret;
}
TPD_DEBUG("[tpd%d] mt_tpd_pinctrl----------\n", pdev->id);
return 0;
}
2.4 LCM ON / OFF 時候---tp要suspend / resume
Y:\code10\mt6737_M0_MP1_V2_84\kernel-3.18\drivers\input\touchscreen\mediatek\mtk_tpd.c
static struct notifier_block tpd_fb_notifier; //定義一個tpd_fb_notifier變量實體
static int tpd_probe(struct platform_device *pdev) //platform_device與platform_driver probe
tpd_fb_notifier.notifier_call = tpd_fb_notifier_callback; //函數指針--指向tpd_fb_notifier_callback()函數
}
static void touch_resume_workqueue_callback(struct work_struct *work)
{
TPD_DEBUG("GTP touch_resume_workqueue_callback\n");
g_tpd_drv->resume(NULL);
tpd_suspend_flag = 0;
}
static int tpd_fb_notifier_callback(struct notifier_block *self, unsigned long event, void *data)
{
struct fb_event *evdata = NULL;
int blank;
int err = 0;
TPD_DEBUG("tpd_fb_notifier_callback\n");
evdata = data;
/* If we aren't interested in this event, skip it immediately ... */
if (event != FB_EVENT_BLANK)
return 0;
blank = *(int *)evdata->data;
TPD_DMESG("fb_notify(blank=%d)\n", blank);
switch (blank) {
case FB_BLANK_UNBLANK: //按power亮屏--爲了不卡亮屏時間--創建了一個wakequeue來處理tp_resume
TPD_DMESG("LCD ON Notify\n");
if (g_tpd_drv && tpd_suspend_flag) {
err = queue_work(touch_resume_workqueue, &touch_resume_work);
if (!err) {
TPD_DMESG("start touch_resume_workqueue failed\n");
return err;
}
}
break;
case FB_BLANK_POWERDOWN: //按power滅屏--touch會run suspend（休眠）
TPD_DMESG("LCD OFF Notify\n");
if (g_tpd_drv)
err = cancel_work_sync(&touch_resume_work);
if (!err)
TPD_DMESG("cancel touch_resume_workqueue err = %d\n", err);
g_tpd_drv->suspend(NULL);
tpd_suspend_flag = 1;
break;
default:
break;
}
return 0;
}
2.5 驅動中如何操作GPIO口輸出0/1 ----- tpd_gpio_output()
Y:\code8\mt6737_M0_MP1_V2_84\kernel-3.18\drivers\input\touchscreen\mediatek\GT1X\gt1x_tpd.c
int gt1x_power_switch(s32 state)
{
tpd_gpio_output(GTP_RST_PORT, 0);
tpd_gpio_output(GTP_INT_PORT, 0);
...
}
Y:\code10\mt6737_M0_MP1_V2_84\kernel-3.18\drivers\input\touchscreen\mediatek\mtk_tpd.c
static DEFINE_MUTEX(tpd_set_gpio_mutex);
void tpd_gpio_as_int(int pin)
{
mutex_lock(&tpd_set_gpio_mutex);
TPD_DEBUG("[tpd]tpd_gpio_as_int\n");
if (pin == 1)
pinctrl_select_state(pinctrl1, eint_as_int);
mutex_unlock(&tpd_set_gpio_mutex);
}
void tpd_gpio_output(int pin, int level)
{
mutex_lock(&tpd_set_gpio_mutex);
TPD_DEBUG("[tpd]tpd_gpio_output pin = %d, level = %d\n", pin, level);
if (pin == 1) {
if (level)
pinctrl_select_state(pinctrl1, eint_output1);
else
pinctrl_select_state(pinctrl1, eint_output0);
} else {
if (level)
pinctrl_select_state(pinctrl1, rst_output1);
else
pinctrl_select_state(pinctrl1, rst_output0);
}
mutex_unlock(&tpd_set_gpio_mutex);
}
14_3.DTS-Vibrator
1.dts中
len6737m_35_m0.dts
/{
vibrator0:vibrator@0 {
compatible = "mediatek,vibrator";
vib_timer = <25>;
vib_limit = <9>;
vib_vol= <5>;
};
}
2.Projectconfig.mk
CUSTOM_KERNEL_VIBRATOR = vibrator
3.len6737m_35_m0_debug_defconfig、len6737m_35_m0_defconfig
CONFIG_MTK_VIBRATOR=y
4.vibrator 驅動中（日後遇到再補充）
Y:\code10\mt6737_M0_MP1_V2_84\kernel-3.18\drivers\misc\mediatek\vibrator\vibrator_drv.c
Y:\code10\mt6737_M0_MP1_V2_84\kernel-3.18\drivers\misc\mediatek\vibrator\mt6735\vibrator.c
14_4.DTS-SPI
1.dts中
1.1 mt6735m.dtsi
spi0:spi@1100a000 {
compatible = "mediatek,mt6735m-spi";
cell-index = <0>;
spi-padmacro = <0>;
reg = <0x1100a000 0x1000>;
interrupts = <GIC_SPI 118 IRQ_TYPE_LEVEL_LOW>;
};
SPI1@0x1100A000 {
cell-index = <0>;
spi-padmacro = <0>;
compatible = "mediatek,SPI1";
reg = <0x1100A000 0x1000>;
interrupts = <0 118 0x8>;
};
1.2 len6737m_35_m0_debug_defconfig、len6737m_35_m0_defconfig
CONFIG_MTK_SPI=y
1.3 codegen.dws
GPIO口初始化設置
GPIO66---SPI0_CKA
GPIO67---SPI0_MIA
GPIO68---SPI0_MOA
//SPI0_CSB
1.4 Y:\code10\mt6737_M0_MP1_V2_84\kernel-3.18\drivers\spi\mediatek\mt6735\spi-dev.c
static struct spi_board_info spi_board_devs[] __initdata = {
[0] = {
.modalias = "spi-ut",
.bus_num = 0, //SPI0 控制器0
.chip_select = 1, //SPI0.1 從設備1
.mode = SPI_MODE_3, //SPI模式3
},
};
static int __init spi_dev_init(void)
{
SPIDEV_LOG("SPI_DEV_INIT.\n");
spi_register_board_info(spi_board_devs, ARRAY_SIZE(spi_board_devs));
return spi_register_driver(&spi_test_driver);
}
static struct spi_driver spi_test_driver = {
.driver = {
.name = "test_spi",
.bus = &spi_bus_type,
.owner = THIS_MODULE,
},
.probe = spi_test_probe,
.remove = spi_test_remove,
.id_table = &spi_id_table,
};
14_5.DTS-Light
1.dts中
1.1 mt6735m.dtsi
led0:led@0 {
compatible = "mediatek,red";
led_mode = <0>; //mt65xx_led_mode 之 MT65XX_LED_MODE_NONE
data = <1>; //mt65xx_led_pmic 之 MT65XX_LED_MODE_PWM
pwm_config = <0 0 0 0 0>;
};
...
led6:led@6 {
compatible = "mediatek,lcd-backlight";
led_mode = <5>; //MT65XX_LED_MODE_CUST_LCM
data = <1>;
pwm_config = <0 0 0 0 0>;
};
1.2 Y:\code8\mt6737_M0_MP1_V2_84\vendor\mediatek\proprietary\bootable\bootloader\lk\target\len6737m_35_m0\cust_leds.c
static struct cust_mt65xx_led cust_led_list[MT65XX_LED_TYPE_TOTAL] = {
{"red", MT65XX_LED_MODE_NONE, -1,{0,0,0,0,0}},
{"green", MT65XX_LED_MODE_NONE, -1,{0,0,0,0,0}},
{"blue", MT65XX_LED_MODE_NONE, -1,{0,0,0,0,0}},
{"jogball-backlight", MT65XX_LED_MODE_NONE, -1,{0,0,0,0,0}},
{"keyboard-backlight",MT65XX_LED_MODE_NONE, -1,{0,0,0,0,0}},
{"button-backlight", MT65XX_LED_MODE_NONE, -1,{0,0,0,0,0}},
{"lcd-backlight", MT65XX_LED_MODE_CUST_BLS_PWM, (int)disp_bls_set_backlight,{0}},
};
1.3 Y:\code8\mt6737_M0_MP1_V2_84\vendor\mediatek\proprietary\bootable\bootloader\lk\target\len6737m_35_m0\inc\cust_leds.h
enum mt65xx_led_mode
{
MT65XX_LED_MODE_NONE, //0
MT65XX_LED_MODE_PWM, //1
MT65XX_LED_MODE_GPIO, //2
MT65XX_LED_MODE_PMIC, //3
MT65XX_LED_MODE_CUST, //4
MT65XX_LED_MODE_CUST_LCM, //5
MT65XX_LED_MODE_CUST_BLS_PWM//6
};
enum mt65xx_led_pmic
{
MT65XX_LED_PMIC_BUTTON=0, //0
MT65XX_LED_PMIC_LCD, //1
MT65XX_LED_PMIC_LCD_ISINK,
MT65XX_LED_PMIC_LCD_BOOST,
MT65XX_LED_PMIC_NLED_ISINK4,
MT65XX_LED_PMIC_NLED_ISINK5,
MT65XX_LED_PMIC_NLED_ISINK0,
MT65XX_LED_PMIC_NLED_ISINK1,
MT65XX_LED_PMIC_NLED_ISINK2,
MT65XX_LED_PMIC_NLED_ISINK3,
MT65XX_LED_PMIC_NLED_ISINK01
};

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