16decea7cSHans de Goede /* 26decea7cSHans de Goede * Allwinner sunxi resistive touchscreen controller driver 36decea7cSHans de Goede * 46decea7cSHans de Goede * Copyright (C) 2013 - 2014 Hans de Goede <hdegoede@redhat.com> 56decea7cSHans de Goede * 6f09f98d3SHans de Goede * The hwmon parts are based on work by Corentin LABBE which is: 7f09f98d3SHans de Goede * Copyright (C) 2013 Corentin LABBE <clabbe.montjoie@gmail.com> 8f09f98d3SHans de Goede * 96decea7cSHans de Goede * This program is free software; you can redistribute it and/or modify 106decea7cSHans de Goede * it under the terms of the GNU General Public License as published by 116decea7cSHans de Goede * the Free Software Foundation; either version 2 of the License, or 126decea7cSHans de Goede * (at your option) any later version. 136decea7cSHans de Goede * 146decea7cSHans de Goede * This program is distributed in the hope that it will be useful, 156decea7cSHans de Goede * but WITHOUT ANY WARRANTY; without even the implied warranty of 166decea7cSHans de Goede * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 176decea7cSHans de Goede * GNU General Public License for more details. 186decea7cSHans de Goede */ 196decea7cSHans de Goede 206decea7cSHans de Goede /* 216decea7cSHans de Goede * The sun4i-ts controller is capable of detecting a second touch, but when a 226decea7cSHans de Goede * second touch is present then the accuracy becomes so bad the reported touch 236decea7cSHans de Goede * location is not useable. 246decea7cSHans de Goede * 256decea7cSHans de Goede * The original android driver contains some complicated heuristics using the 266decea7cSHans de Goede * aprox. distance between the 2 touches to see if the user is making a pinch 276decea7cSHans de Goede * open / close movement, and then reports emulated multi-touch events around 286decea7cSHans de Goede * the last touch coordinate (as the dual-touch coordinates are worthless). 296decea7cSHans de Goede * 306decea7cSHans de Goede * These kinds of heuristics are just asking for trouble (and don't belong 316decea7cSHans de Goede * in the kernel). So this driver offers straight forward, reliable single 326decea7cSHans de Goede * touch functionality only. 336decea7cSHans de Goede */ 346decea7cSHans de Goede 356decea7cSHans de Goede #include <linux/err.h> 36f09f98d3SHans de Goede #include <linux/hwmon.h> 3722369710SChen-Yu Tsai #include <linux/thermal.h> 386decea7cSHans de Goede #include <linux/init.h> 396decea7cSHans de Goede #include <linux/input.h> 406decea7cSHans de Goede #include <linux/interrupt.h> 416decea7cSHans de Goede #include <linux/io.h> 426decea7cSHans de Goede #include <linux/module.h> 436decea7cSHans de Goede #include <linux/of_platform.h> 446decea7cSHans de Goede #include <linux/platform_device.h> 456decea7cSHans de Goede #include <linux/slab.h> 466decea7cSHans de Goede 476decea7cSHans de Goede #define TP_CTRL0 0x00 486decea7cSHans de Goede #define TP_CTRL1 0x04 496decea7cSHans de Goede #define TP_CTRL2 0x08 506decea7cSHans de Goede #define TP_CTRL3 0x0c 516decea7cSHans de Goede #define TP_INT_FIFOC 0x10 526decea7cSHans de Goede #define TP_INT_FIFOS 0x14 536decea7cSHans de Goede #define TP_TPR 0x18 546decea7cSHans de Goede #define TP_CDAT 0x1c 556decea7cSHans de Goede #define TEMP_DATA 0x20 566decea7cSHans de Goede #define TP_DATA 0x24 576decea7cSHans de Goede 586decea7cSHans de Goede /* TP_CTRL0 bits */ 596decea7cSHans de Goede #define ADC_FIRST_DLY(x) ((x) << 24) /* 8 bits */ 606decea7cSHans de Goede #define ADC_FIRST_DLY_MODE(x) ((x) << 23) 616decea7cSHans de Goede #define ADC_CLK_SEL(x) ((x) << 22) 626decea7cSHans de Goede #define ADC_CLK_DIV(x) ((x) << 20) /* 3 bits */ 636decea7cSHans de Goede #define FS_DIV(x) ((x) << 16) /* 4 bits */ 646decea7cSHans de Goede #define T_ACQ(x) ((x) << 0) /* 16 bits */ 656decea7cSHans de Goede 666decea7cSHans de Goede /* TP_CTRL1 bits */ 676decea7cSHans de Goede #define STYLUS_UP_DEBOUN(x) ((x) << 12) /* 8 bits */ 686decea7cSHans de Goede #define STYLUS_UP_DEBOUN_EN(x) ((x) << 9) 696decea7cSHans de Goede #define TOUCH_PAN_CALI_EN(x) ((x) << 6) 706decea7cSHans de Goede #define TP_DUAL_EN(x) ((x) << 5) 716decea7cSHans de Goede #define TP_MODE_EN(x) ((x) << 4) 726decea7cSHans de Goede #define TP_ADC_SELECT(x) ((x) << 3) 736decea7cSHans de Goede #define ADC_CHAN_SELECT(x) ((x) << 0) /* 3 bits */ 746decea7cSHans de Goede 756decea7cSHans de Goede /* TP_CTRL2 bits */ 766decea7cSHans de Goede #define TP_SENSITIVE_ADJUST(x) ((x) << 28) /* 4 bits */ 776decea7cSHans de Goede #define TP_MODE_SELECT(x) ((x) << 26) /* 2 bits */ 786decea7cSHans de Goede #define PRE_MEA_EN(x) ((x) << 24) 796decea7cSHans de Goede #define PRE_MEA_THRE_CNT(x) ((x) << 0) /* 24 bits */ 806decea7cSHans de Goede 816decea7cSHans de Goede /* TP_CTRL3 bits */ 826decea7cSHans de Goede #define FILTER_EN(x) ((x) << 2) 836decea7cSHans de Goede #define FILTER_TYPE(x) ((x) << 0) /* 2 bits */ 846decea7cSHans de Goede 856decea7cSHans de Goede /* TP_INT_FIFOC irq and fifo mask / control bits */ 866decea7cSHans de Goede #define TEMP_IRQ_EN(x) ((x) << 18) 876decea7cSHans de Goede #define OVERRUN_IRQ_EN(x) ((x) << 17) 886decea7cSHans de Goede #define DATA_IRQ_EN(x) ((x) << 16) 896decea7cSHans de Goede #define TP_DATA_XY_CHANGE(x) ((x) << 13) 906decea7cSHans de Goede #define FIFO_TRIG(x) ((x) << 8) /* 5 bits */ 916decea7cSHans de Goede #define DATA_DRQ_EN(x) ((x) << 7) 926decea7cSHans de Goede #define FIFO_FLUSH(x) ((x) << 4) 936decea7cSHans de Goede #define TP_UP_IRQ_EN(x) ((x) << 1) 946decea7cSHans de Goede #define TP_DOWN_IRQ_EN(x) ((x) << 0) 956decea7cSHans de Goede 966decea7cSHans de Goede /* TP_INT_FIFOS irq and fifo status bits */ 976decea7cSHans de Goede #define TEMP_DATA_PENDING BIT(18) 986decea7cSHans de Goede #define FIFO_OVERRUN_PENDING BIT(17) 996decea7cSHans de Goede #define FIFO_DATA_PENDING BIT(16) 1006decea7cSHans de Goede #define TP_IDLE_FLG BIT(2) 1016decea7cSHans de Goede #define TP_UP_PENDING BIT(1) 1026decea7cSHans de Goede #define TP_DOWN_PENDING BIT(0) 1036decea7cSHans de Goede 1046decea7cSHans de Goede /* TP_TPR bits */ 1056decea7cSHans de Goede #define TEMP_ENABLE(x) ((x) << 16) 1066decea7cSHans de Goede #define TEMP_PERIOD(x) ((x) << 0) /* t = x * 256 * 16 / clkin */ 1076decea7cSHans de Goede 1086decea7cSHans de Goede struct sun4i_ts_data { 1096decea7cSHans de Goede struct device *dev; 1106decea7cSHans de Goede struct input_dev *input; 11122369710SChen-Yu Tsai struct thermal_zone_device *tz; 1126decea7cSHans de Goede void __iomem *base; 1136decea7cSHans de Goede unsigned int irq; 1146decea7cSHans de Goede bool ignore_fifo_data; 115f09f98d3SHans de Goede int temp_data; 1166decea7cSHans de Goede }; 1176decea7cSHans de Goede 118f09f98d3SHans de Goede static void sun4i_ts_irq_handle_input(struct sun4i_ts_data *ts, u32 reg_val) 1196decea7cSHans de Goede { 120f09f98d3SHans de Goede u32 x, y; 1216decea7cSHans de Goede 1226decea7cSHans de Goede if (reg_val & FIFO_DATA_PENDING) { 1236decea7cSHans de Goede x = readl(ts->base + TP_DATA); 1246decea7cSHans de Goede y = readl(ts->base + TP_DATA); 1256decea7cSHans de Goede /* The 1st location reported after an up event is unreliable */ 1266decea7cSHans de Goede if (!ts->ignore_fifo_data) { 1276decea7cSHans de Goede input_report_abs(ts->input, ABS_X, x); 1286decea7cSHans de Goede input_report_abs(ts->input, ABS_Y, y); 1296decea7cSHans de Goede /* 1306decea7cSHans de Goede * The hardware has a separate down status bit, but 1316decea7cSHans de Goede * that gets set before we get the first location, 1326decea7cSHans de Goede * resulting in reporting a click on the old location. 1336decea7cSHans de Goede */ 1346decea7cSHans de Goede input_report_key(ts->input, BTN_TOUCH, 1); 1356decea7cSHans de Goede input_sync(ts->input); 1366decea7cSHans de Goede } else { 1376decea7cSHans de Goede ts->ignore_fifo_data = false; 1386decea7cSHans de Goede } 1396decea7cSHans de Goede } 1406decea7cSHans de Goede 1416decea7cSHans de Goede if (reg_val & TP_UP_PENDING) { 1426decea7cSHans de Goede ts->ignore_fifo_data = true; 1436decea7cSHans de Goede input_report_key(ts->input, BTN_TOUCH, 0); 1446decea7cSHans de Goede input_sync(ts->input); 1456decea7cSHans de Goede } 146f09f98d3SHans de Goede } 147f09f98d3SHans de Goede 148f09f98d3SHans de Goede static irqreturn_t sun4i_ts_irq(int irq, void *dev_id) 149f09f98d3SHans de Goede { 150f09f98d3SHans de Goede struct sun4i_ts_data *ts = dev_id; 151f09f98d3SHans de Goede u32 reg_val; 152f09f98d3SHans de Goede 153f09f98d3SHans de Goede reg_val = readl(ts->base + TP_INT_FIFOS); 154f09f98d3SHans de Goede 155f09f98d3SHans de Goede if (reg_val & TEMP_DATA_PENDING) 156f09f98d3SHans de Goede ts->temp_data = readl(ts->base + TEMP_DATA); 157f09f98d3SHans de Goede 158f09f98d3SHans de Goede if (ts->input) 159f09f98d3SHans de Goede sun4i_ts_irq_handle_input(ts, reg_val); 1606decea7cSHans de Goede 1616decea7cSHans de Goede writel(reg_val, ts->base + TP_INT_FIFOS); 1626decea7cSHans de Goede 1636decea7cSHans de Goede return IRQ_HANDLED; 1646decea7cSHans de Goede } 1656decea7cSHans de Goede 1666decea7cSHans de Goede static int sun4i_ts_open(struct input_dev *dev) 1676decea7cSHans de Goede { 1686decea7cSHans de Goede struct sun4i_ts_data *ts = input_get_drvdata(dev); 1696decea7cSHans de Goede 170f09f98d3SHans de Goede /* Flush, set trig level to 1, enable temp, data and up irqs */ 171f09f98d3SHans de Goede writel(TEMP_IRQ_EN(1) | DATA_IRQ_EN(1) | FIFO_TRIG(1) | FIFO_FLUSH(1) | 172f09f98d3SHans de Goede TP_UP_IRQ_EN(1), ts->base + TP_INT_FIFOC); 1736decea7cSHans de Goede 1746decea7cSHans de Goede return 0; 1756decea7cSHans de Goede } 1766decea7cSHans de Goede 1776decea7cSHans de Goede static void sun4i_ts_close(struct input_dev *dev) 1786decea7cSHans de Goede { 1796decea7cSHans de Goede struct sun4i_ts_data *ts = input_get_drvdata(dev); 1806decea7cSHans de Goede 181f09f98d3SHans de Goede /* Deactivate all input IRQs */ 182f09f98d3SHans de Goede writel(TEMP_IRQ_EN(1), ts->base + TP_INT_FIFOC); 1836decea7cSHans de Goede } 1846decea7cSHans de Goede 18522369710SChen-Yu Tsai static int sun4i_get_temp(const struct sun4i_ts_data *ts, long *temp) 186f09f98d3SHans de Goede { 187f09f98d3SHans de Goede /* No temp_data until the first irq */ 188f09f98d3SHans de Goede if (ts->temp_data == -1) 189f09f98d3SHans de Goede return -EAGAIN; 190f09f98d3SHans de Goede 19122369710SChen-Yu Tsai /* 19222369710SChen-Yu Tsai * The user manuals do not contain the formula for calculating 19322369710SChen-Yu Tsai * the temperature. The formula used here is from the AXP209, 19422369710SChen-Yu Tsai * which is designed by X-Powers, an affiliate of Allwinner: 19522369710SChen-Yu Tsai * 19622369710SChen-Yu Tsai * temperature = -144.7 + (value * 0.1) 19722369710SChen-Yu Tsai * 19822369710SChen-Yu Tsai * This should be replaced with the correct one if such information 19922369710SChen-Yu Tsai * becomes available. 20022369710SChen-Yu Tsai */ 20122369710SChen-Yu Tsai *temp = (ts->temp_data - 1447) * 100; 20222369710SChen-Yu Tsai 20322369710SChen-Yu Tsai return 0; 20422369710SChen-Yu Tsai } 20522369710SChen-Yu Tsai 20622369710SChen-Yu Tsai static int sun4i_get_tz_temp(void *data, long *temp) 20722369710SChen-Yu Tsai { 20822369710SChen-Yu Tsai return sun4i_get_temp(data, temp); 20922369710SChen-Yu Tsai } 21022369710SChen-Yu Tsai 21122369710SChen-Yu Tsai static struct thermal_zone_of_device_ops sun4i_ts_tz_ops = { 21222369710SChen-Yu Tsai .get_temp = sun4i_get_tz_temp, 21322369710SChen-Yu Tsai }; 21422369710SChen-Yu Tsai 21522369710SChen-Yu Tsai static ssize_t show_temp(struct device *dev, struct device_attribute *devattr, 21622369710SChen-Yu Tsai char *buf) 21722369710SChen-Yu Tsai { 21822369710SChen-Yu Tsai struct sun4i_ts_data *ts = dev_get_drvdata(dev); 21922369710SChen-Yu Tsai long temp; 22022369710SChen-Yu Tsai int error; 22122369710SChen-Yu Tsai 22222369710SChen-Yu Tsai error = sun4i_get_temp(ts, &temp); 22322369710SChen-Yu Tsai if (error) 22422369710SChen-Yu Tsai return error; 22522369710SChen-Yu Tsai 22622369710SChen-Yu Tsai return sprintf(buf, "%ld\n", temp); 227f09f98d3SHans de Goede } 228f09f98d3SHans de Goede 229f09f98d3SHans de Goede static ssize_t show_temp_label(struct device *dev, 230f09f98d3SHans de Goede struct device_attribute *devattr, char *buf) 231f09f98d3SHans de Goede { 232f09f98d3SHans de Goede return sprintf(buf, "SoC temperature\n"); 233f09f98d3SHans de Goede } 234f09f98d3SHans de Goede 235f09f98d3SHans de Goede static DEVICE_ATTR(temp1_input, S_IRUGO, show_temp, NULL); 236f09f98d3SHans de Goede static DEVICE_ATTR(temp1_label, S_IRUGO, show_temp_label, NULL); 237f09f98d3SHans de Goede 238f09f98d3SHans de Goede static struct attribute *sun4i_ts_attrs[] = { 239f09f98d3SHans de Goede &dev_attr_temp1_input.attr, 240f09f98d3SHans de Goede &dev_attr_temp1_label.attr, 241f09f98d3SHans de Goede NULL 242f09f98d3SHans de Goede }; 243f09f98d3SHans de Goede ATTRIBUTE_GROUPS(sun4i_ts); 244f09f98d3SHans de Goede 2456decea7cSHans de Goede static int sun4i_ts_probe(struct platform_device *pdev) 2466decea7cSHans de Goede { 2476decea7cSHans de Goede struct sun4i_ts_data *ts; 2486decea7cSHans de Goede struct device *dev = &pdev->dev; 249f09f98d3SHans de Goede struct device_node *np = dev->of_node; 250f09f98d3SHans de Goede struct device *hwmon; 2516decea7cSHans de Goede int error; 252f09f98d3SHans de Goede bool ts_attached; 2536decea7cSHans de Goede 2546decea7cSHans de Goede ts = devm_kzalloc(dev, sizeof(struct sun4i_ts_data), GFP_KERNEL); 2556decea7cSHans de Goede if (!ts) 2566decea7cSHans de Goede return -ENOMEM; 2576decea7cSHans de Goede 2586decea7cSHans de Goede ts->dev = dev; 2596decea7cSHans de Goede ts->ignore_fifo_data = true; 260f09f98d3SHans de Goede ts->temp_data = -1; 2616decea7cSHans de Goede 262f09f98d3SHans de Goede ts_attached = of_property_read_bool(np, "allwinner,ts-attached"); 263f09f98d3SHans de Goede if (ts_attached) { 2646decea7cSHans de Goede ts->input = devm_input_allocate_device(dev); 2656decea7cSHans de Goede if (!ts->input) 2666decea7cSHans de Goede return -ENOMEM; 2676decea7cSHans de Goede 2686decea7cSHans de Goede ts->input->name = pdev->name; 2696decea7cSHans de Goede ts->input->phys = "sun4i_ts/input0"; 2706decea7cSHans de Goede ts->input->open = sun4i_ts_open; 2716decea7cSHans de Goede ts->input->close = sun4i_ts_close; 2726decea7cSHans de Goede ts->input->id.bustype = BUS_HOST; 2736decea7cSHans de Goede ts->input->id.vendor = 0x0001; 2746decea7cSHans de Goede ts->input->id.product = 0x0001; 2756decea7cSHans de Goede ts->input->id.version = 0x0100; 2766decea7cSHans de Goede ts->input->evbit[0] = BIT(EV_SYN) | BIT(EV_KEY) | BIT(EV_ABS); 2776decea7cSHans de Goede __set_bit(BTN_TOUCH, ts->input->keybit); 2786decea7cSHans de Goede input_set_abs_params(ts->input, ABS_X, 0, 4095, 0, 0); 2796decea7cSHans de Goede input_set_abs_params(ts->input, ABS_Y, 0, 4095, 0, 0); 2806decea7cSHans de Goede input_set_drvdata(ts->input, ts); 281f09f98d3SHans de Goede } 2826decea7cSHans de Goede 2836decea7cSHans de Goede ts->base = devm_ioremap_resource(dev, 2846decea7cSHans de Goede platform_get_resource(pdev, IORESOURCE_MEM, 0)); 2856decea7cSHans de Goede if (IS_ERR(ts->base)) 2866decea7cSHans de Goede return PTR_ERR(ts->base); 2876decea7cSHans de Goede 2886decea7cSHans de Goede ts->irq = platform_get_irq(pdev, 0); 2896decea7cSHans de Goede error = devm_request_irq(dev, ts->irq, sun4i_ts_irq, 0, "sun4i-ts", ts); 2906decea7cSHans de Goede if (error) 2916decea7cSHans de Goede return error; 2926decea7cSHans de Goede 2936decea7cSHans de Goede /* 2946decea7cSHans de Goede * Select HOSC clk, clkin = clk / 6, adc samplefreq = clkin / 8192, 2956decea7cSHans de Goede * t_acq = clkin / (16 * 64) 2966decea7cSHans de Goede */ 2976decea7cSHans de Goede writel(ADC_CLK_SEL(0) | ADC_CLK_DIV(2) | FS_DIV(7) | T_ACQ(63), 2986decea7cSHans de Goede ts->base + TP_CTRL0); 2996decea7cSHans de Goede 3006decea7cSHans de Goede /* 3016decea7cSHans de Goede * sensitive_adjust = 15 : max, which is not all that sensitive, 3026decea7cSHans de Goede * tp_mode = 0 : only x and y coordinates, as we don't use dual touch 3036decea7cSHans de Goede */ 3046decea7cSHans de Goede writel(TP_SENSITIVE_ADJUST(15) | TP_MODE_SELECT(0), 3056decea7cSHans de Goede ts->base + TP_CTRL2); 3066decea7cSHans de Goede 3076decea7cSHans de Goede /* Enable median filter, type 1 : 5/3 */ 3086decea7cSHans de Goede writel(FILTER_EN(1) | FILTER_TYPE(1), ts->base + TP_CTRL3); 3096decea7cSHans de Goede 3106decea7cSHans de Goede /* Enable temperature measurement, period 1953 (2 seconds) */ 3116decea7cSHans de Goede writel(TEMP_ENABLE(1) | TEMP_PERIOD(1953), ts->base + TP_TPR); 3126decea7cSHans de Goede 3136decea7cSHans de Goede /* 3146decea7cSHans de Goede * Set stylus up debounce to aprox 10 ms, enable debounce, and 3156decea7cSHans de Goede * finally enable tp mode. 3166decea7cSHans de Goede */ 3176decea7cSHans de Goede writel(STYLUS_UP_DEBOUN(5) | STYLUS_UP_DEBOUN_EN(1) | TP_MODE_EN(1), 3186decea7cSHans de Goede ts->base + TP_CTRL1); 3196decea7cSHans de Goede 32022369710SChen-Yu Tsai /* 32122369710SChen-Yu Tsai * The thermal core does not register hwmon devices for DT-based 32222369710SChen-Yu Tsai * thermal zone sensors, such as this one. 32322369710SChen-Yu Tsai */ 324f09f98d3SHans de Goede hwmon = devm_hwmon_device_register_with_groups(ts->dev, "sun4i_ts", 325f09f98d3SHans de Goede ts, sun4i_ts_groups); 326f09f98d3SHans de Goede if (IS_ERR(hwmon)) 327f09f98d3SHans de Goede return PTR_ERR(hwmon); 328f09f98d3SHans de Goede 32922369710SChen-Yu Tsai ts->tz = thermal_zone_of_sensor_register(ts->dev, 0, ts, 33022369710SChen-Yu Tsai &sun4i_ts_tz_ops); 33122369710SChen-Yu Tsai if (IS_ERR(ts->tz)) 33222369710SChen-Yu Tsai ts->tz = NULL; 33322369710SChen-Yu Tsai 334f09f98d3SHans de Goede writel(TEMP_IRQ_EN(1), ts->base + TP_INT_FIFOC); 335f09f98d3SHans de Goede 336f09f98d3SHans de Goede if (ts_attached) { 3376decea7cSHans de Goede error = input_register_device(ts->input); 338f09f98d3SHans de Goede if (error) { 339f09f98d3SHans de Goede writel(0, ts->base + TP_INT_FIFOC); 34022369710SChen-Yu Tsai thermal_zone_of_sensor_unregister(ts->dev, ts->tz); 3416decea7cSHans de Goede return error; 342f09f98d3SHans de Goede } 343f09f98d3SHans de Goede } 3446decea7cSHans de Goede 3456decea7cSHans de Goede platform_set_drvdata(pdev, ts); 3466decea7cSHans de Goede return 0; 3476decea7cSHans de Goede } 3486decea7cSHans de Goede 349f09f98d3SHans de Goede static int sun4i_ts_remove(struct platform_device *pdev) 350f09f98d3SHans de Goede { 351f09f98d3SHans de Goede struct sun4i_ts_data *ts = platform_get_drvdata(pdev); 352f09f98d3SHans de Goede 353f09f98d3SHans de Goede /* Explicit unregister to avoid open/close changing the imask later */ 354f09f98d3SHans de Goede if (ts->input) 355f09f98d3SHans de Goede input_unregister_device(ts->input); 356f09f98d3SHans de Goede 35722369710SChen-Yu Tsai thermal_zone_of_sensor_unregister(ts->dev, ts->tz); 35822369710SChen-Yu Tsai 359f09f98d3SHans de Goede /* Deactivate all IRQs */ 360f09f98d3SHans de Goede writel(0, ts->base + TP_INT_FIFOC); 361f09f98d3SHans de Goede 362f09f98d3SHans de Goede return 0; 363f09f98d3SHans de Goede } 364f09f98d3SHans de Goede 3656decea7cSHans de Goede static const struct of_device_id sun4i_ts_of_match[] = { 3666decea7cSHans de Goede { .compatible = "allwinner,sun4i-a10-ts", }, 3676decea7cSHans de Goede { /* sentinel */ } 3686decea7cSHans de Goede }; 3696decea7cSHans de Goede MODULE_DEVICE_TABLE(of, sun4i_ts_of_match); 3706decea7cSHans de Goede 3716decea7cSHans de Goede static struct platform_driver sun4i_ts_driver = { 3726decea7cSHans de Goede .driver = { 3736decea7cSHans de Goede .name = "sun4i-ts", 3746decea7cSHans de Goede .of_match_table = of_match_ptr(sun4i_ts_of_match), 3756decea7cSHans de Goede }, 3766decea7cSHans de Goede .probe = sun4i_ts_probe, 377f09f98d3SHans de Goede .remove = sun4i_ts_remove, 3786decea7cSHans de Goede }; 3796decea7cSHans de Goede 3806decea7cSHans de Goede module_platform_driver(sun4i_ts_driver); 3816decea7cSHans de Goede 3826decea7cSHans de Goede MODULE_DESCRIPTION("Allwinner sun4i resistive touchscreen controller driver"); 3836decea7cSHans de Goede MODULE_AUTHOR("Hans de Goede <hdegoede@redhat.com>"); 3846decea7cSHans de Goede MODULE_LICENSE("GPL"); 385