1c942fddfSThomas Gleixner // SPDX-License-Identifier: GPL-2.0-or-later 26decea7cSHans de Goede /* 36decea7cSHans de Goede * Allwinner sunxi resistive touchscreen controller driver 46decea7cSHans de Goede * 56decea7cSHans de Goede * Copyright (C) 2013 - 2014 Hans de Goede <hdegoede@redhat.com> 66decea7cSHans de Goede * 7f09f98d3SHans de Goede * The hwmon parts are based on work by Corentin LABBE which is: 8f09f98d3SHans de Goede * Copyright (C) 2013 Corentin LABBE <clabbe.montjoie@gmail.com> 96decea7cSHans de Goede */ 106decea7cSHans de Goede 116decea7cSHans de Goede /* 126decea7cSHans de Goede * The sun4i-ts controller is capable of detecting a second touch, but when a 136decea7cSHans de Goede * second touch is present then the accuracy becomes so bad the reported touch 146decea7cSHans de Goede * location is not useable. 156decea7cSHans de Goede * 166decea7cSHans de Goede * The original android driver contains some complicated heuristics using the 176decea7cSHans de Goede * aprox. distance between the 2 touches to see if the user is making a pinch 186decea7cSHans de Goede * open / close movement, and then reports emulated multi-touch events around 196decea7cSHans de Goede * the last touch coordinate (as the dual-touch coordinates are worthless). 206decea7cSHans de Goede * 216decea7cSHans de Goede * These kinds of heuristics are just asking for trouble (and don't belong 226decea7cSHans de Goede * in the kernel). So this driver offers straight forward, reliable single 236decea7cSHans de Goede * touch functionality only. 244ed0e032SJens Thiele * 25dc7a12bdSMauro Carvalho Chehab * s.a. A20 User Manual "1.15 TP" (Documentation/arm/sunxi.rst) 264ed0e032SJens Thiele * (looks like the description in the A20 User Manual v1.3 is better 274ed0e032SJens Thiele * than the one in the A10 User Manual v.1.5) 286decea7cSHans de Goede */ 296decea7cSHans de Goede 306decea7cSHans de Goede #include <linux/err.h> 31f09f98d3SHans de Goede #include <linux/hwmon.h> 3222369710SChen-Yu Tsai #include <linux/thermal.h> 336decea7cSHans de Goede #include <linux/init.h> 346decea7cSHans de Goede #include <linux/input.h> 356decea7cSHans de Goede #include <linux/interrupt.h> 366decea7cSHans de Goede #include <linux/io.h> 376decea7cSHans de Goede #include <linux/module.h> 386decea7cSHans de Goede #include <linux/of_platform.h> 396decea7cSHans de Goede #include <linux/platform_device.h> 406decea7cSHans de Goede #include <linux/slab.h> 416decea7cSHans de Goede 426decea7cSHans de Goede #define TP_CTRL0 0x00 436decea7cSHans de Goede #define TP_CTRL1 0x04 446decea7cSHans de Goede #define TP_CTRL2 0x08 456decea7cSHans de Goede #define TP_CTRL3 0x0c 466decea7cSHans de Goede #define TP_INT_FIFOC 0x10 476decea7cSHans de Goede #define TP_INT_FIFOS 0x14 486decea7cSHans de Goede #define TP_TPR 0x18 496decea7cSHans de Goede #define TP_CDAT 0x1c 506decea7cSHans de Goede #define TEMP_DATA 0x20 516decea7cSHans de Goede #define TP_DATA 0x24 526decea7cSHans de Goede 536decea7cSHans de Goede /* TP_CTRL0 bits */ 546decea7cSHans de Goede #define ADC_FIRST_DLY(x) ((x) << 24) /* 8 bits */ 556decea7cSHans de Goede #define ADC_FIRST_DLY_MODE(x) ((x) << 23) 566decea7cSHans de Goede #define ADC_CLK_SEL(x) ((x) << 22) 576decea7cSHans de Goede #define ADC_CLK_DIV(x) ((x) << 20) /* 3 bits */ 586decea7cSHans de Goede #define FS_DIV(x) ((x) << 16) /* 4 bits */ 596decea7cSHans de Goede #define T_ACQ(x) ((x) << 0) /* 16 bits */ 606decea7cSHans de Goede 616decea7cSHans de Goede /* TP_CTRL1 bits */ 626decea7cSHans de Goede #define STYLUS_UP_DEBOUN(x) ((x) << 12) /* 8 bits */ 636decea7cSHans de Goede #define STYLUS_UP_DEBOUN_EN(x) ((x) << 9) 646decea7cSHans de Goede #define TOUCH_PAN_CALI_EN(x) ((x) << 6) 656decea7cSHans de Goede #define TP_DUAL_EN(x) ((x) << 5) 666decea7cSHans de Goede #define TP_MODE_EN(x) ((x) << 4) 676decea7cSHans de Goede #define TP_ADC_SELECT(x) ((x) << 3) 686decea7cSHans de Goede #define ADC_CHAN_SELECT(x) ((x) << 0) /* 3 bits */ 696decea7cSHans de Goede 7043c0e223SChen-Yu Tsai /* on sun6i, bits 3~6 are left shifted by 1 to 4~7 */ 7143c0e223SChen-Yu Tsai #define SUN6I_TP_MODE_EN(x) ((x) << 5) 7243c0e223SChen-Yu Tsai 736decea7cSHans de Goede /* TP_CTRL2 bits */ 746decea7cSHans de Goede #define TP_SENSITIVE_ADJUST(x) ((x) << 28) /* 4 bits */ 756decea7cSHans de Goede #define TP_MODE_SELECT(x) ((x) << 26) /* 2 bits */ 766decea7cSHans de Goede #define PRE_MEA_EN(x) ((x) << 24) 776decea7cSHans de Goede #define PRE_MEA_THRE_CNT(x) ((x) << 0) /* 24 bits */ 786decea7cSHans de Goede 796decea7cSHans de Goede /* TP_CTRL3 bits */ 806decea7cSHans de Goede #define FILTER_EN(x) ((x) << 2) 816decea7cSHans de Goede #define FILTER_TYPE(x) ((x) << 0) /* 2 bits */ 826decea7cSHans de Goede 836decea7cSHans de Goede /* TP_INT_FIFOC irq and fifo mask / control bits */ 846decea7cSHans de Goede #define TEMP_IRQ_EN(x) ((x) << 18) 856decea7cSHans de Goede #define OVERRUN_IRQ_EN(x) ((x) << 17) 866decea7cSHans de Goede #define DATA_IRQ_EN(x) ((x) << 16) 876decea7cSHans de Goede #define TP_DATA_XY_CHANGE(x) ((x) << 13) 886decea7cSHans de Goede #define FIFO_TRIG(x) ((x) << 8) /* 5 bits */ 896decea7cSHans de Goede #define DATA_DRQ_EN(x) ((x) << 7) 906decea7cSHans de Goede #define FIFO_FLUSH(x) ((x) << 4) 916decea7cSHans de Goede #define TP_UP_IRQ_EN(x) ((x) << 1) 926decea7cSHans de Goede #define TP_DOWN_IRQ_EN(x) ((x) << 0) 936decea7cSHans de Goede 946decea7cSHans de Goede /* TP_INT_FIFOS irq and fifo status bits */ 956decea7cSHans de Goede #define TEMP_DATA_PENDING BIT(18) 966decea7cSHans de Goede #define FIFO_OVERRUN_PENDING BIT(17) 976decea7cSHans de Goede #define FIFO_DATA_PENDING BIT(16) 986decea7cSHans de Goede #define TP_IDLE_FLG BIT(2) 996decea7cSHans de Goede #define TP_UP_PENDING BIT(1) 1006decea7cSHans de Goede #define TP_DOWN_PENDING BIT(0) 1016decea7cSHans de Goede 1026decea7cSHans de Goede /* TP_TPR bits */ 1036decea7cSHans de Goede #define TEMP_ENABLE(x) ((x) << 16) 1046decea7cSHans de Goede #define TEMP_PERIOD(x) ((x) << 0) /* t = x * 256 * 16 / clkin */ 1056decea7cSHans de Goede 1066decea7cSHans de Goede struct sun4i_ts_data { 1076decea7cSHans de Goede struct device *dev; 1086decea7cSHans de Goede struct input_dev *input; 1096decea7cSHans de Goede void __iomem *base; 1106decea7cSHans de Goede unsigned int irq; 1116decea7cSHans de Goede bool ignore_fifo_data; 112f09f98d3SHans de Goede int temp_data; 11343c0e223SChen-Yu Tsai int temp_offset; 11443c0e223SChen-Yu Tsai int temp_step; 1156decea7cSHans de Goede }; 1166decea7cSHans de Goede 117f09f98d3SHans de Goede static void sun4i_ts_irq_handle_input(struct sun4i_ts_data *ts, u32 reg_val) 1186decea7cSHans de Goede { 119f09f98d3SHans de Goede u32 x, y; 1206decea7cSHans de Goede 1216decea7cSHans de Goede if (reg_val & FIFO_DATA_PENDING) { 1226decea7cSHans de Goede x = readl(ts->base + TP_DATA); 1236decea7cSHans de Goede y = readl(ts->base + TP_DATA); 1246decea7cSHans de Goede /* The 1st location reported after an up event is unreliable */ 1256decea7cSHans de Goede if (!ts->ignore_fifo_data) { 1266decea7cSHans de Goede input_report_abs(ts->input, ABS_X, x); 1276decea7cSHans de Goede input_report_abs(ts->input, ABS_Y, y); 1286decea7cSHans de Goede /* 1296decea7cSHans de Goede * The hardware has a separate down status bit, but 1306decea7cSHans de Goede * that gets set before we get the first location, 1316decea7cSHans de Goede * resulting in reporting a click on the old location. 1326decea7cSHans de Goede */ 1336decea7cSHans de Goede input_report_key(ts->input, BTN_TOUCH, 1); 1346decea7cSHans de Goede input_sync(ts->input); 1356decea7cSHans de Goede } else { 1366decea7cSHans de Goede ts->ignore_fifo_data = false; 1376decea7cSHans de Goede } 1386decea7cSHans de Goede } 1396decea7cSHans de Goede 1406decea7cSHans de Goede if (reg_val & TP_UP_PENDING) { 1416decea7cSHans de Goede ts->ignore_fifo_data = true; 1426decea7cSHans de Goede input_report_key(ts->input, BTN_TOUCH, 0); 1436decea7cSHans de Goede input_sync(ts->input); 1446decea7cSHans de Goede } 145f09f98d3SHans de Goede } 146f09f98d3SHans de Goede 147f09f98d3SHans de Goede static irqreturn_t sun4i_ts_irq(int irq, void *dev_id) 148f09f98d3SHans de Goede { 149f09f98d3SHans de Goede struct sun4i_ts_data *ts = dev_id; 150f09f98d3SHans de Goede u32 reg_val; 151f09f98d3SHans de Goede 152f09f98d3SHans de Goede reg_val = readl(ts->base + TP_INT_FIFOS); 153f09f98d3SHans de Goede 154f09f98d3SHans de Goede if (reg_val & TEMP_DATA_PENDING) 155f09f98d3SHans de Goede ts->temp_data = readl(ts->base + TEMP_DATA); 156f09f98d3SHans de Goede 157f09f98d3SHans de Goede if (ts->input) 158f09f98d3SHans de Goede sun4i_ts_irq_handle_input(ts, reg_val); 1596decea7cSHans de Goede 1606decea7cSHans de Goede writel(reg_val, ts->base + TP_INT_FIFOS); 1616decea7cSHans de Goede 1626decea7cSHans de Goede return IRQ_HANDLED; 1636decea7cSHans de Goede } 1646decea7cSHans de Goede 1656decea7cSHans de Goede static int sun4i_ts_open(struct input_dev *dev) 1666decea7cSHans de Goede { 1676decea7cSHans de Goede struct sun4i_ts_data *ts = input_get_drvdata(dev); 1686decea7cSHans de Goede 169f09f98d3SHans de Goede /* Flush, set trig level to 1, enable temp, data and up irqs */ 170f09f98d3SHans de Goede writel(TEMP_IRQ_EN(1) | DATA_IRQ_EN(1) | FIFO_TRIG(1) | FIFO_FLUSH(1) | 171f09f98d3SHans de Goede TP_UP_IRQ_EN(1), ts->base + TP_INT_FIFOC); 1726decea7cSHans de Goede 1736decea7cSHans de Goede return 0; 1746decea7cSHans de Goede } 1756decea7cSHans de Goede 1766decea7cSHans de Goede static void sun4i_ts_close(struct input_dev *dev) 1776decea7cSHans de Goede { 1786decea7cSHans de Goede struct sun4i_ts_data *ts = input_get_drvdata(dev); 1796decea7cSHans de Goede 180f09f98d3SHans de Goede /* Deactivate all input IRQs */ 181f09f98d3SHans de Goede writel(TEMP_IRQ_EN(1), ts->base + TP_INT_FIFOC); 1826decea7cSHans de Goede } 1836decea7cSHans de Goede 18417e8351aSSascha Hauer static int sun4i_get_temp(const struct sun4i_ts_data *ts, int *temp) 185f09f98d3SHans de Goede { 186f09f98d3SHans de Goede /* No temp_data until the first irq */ 187f09f98d3SHans de Goede if (ts->temp_data == -1) 188f09f98d3SHans de Goede return -EAGAIN; 189f09f98d3SHans de Goede 190877bef7dSHans de Goede *temp = ts->temp_data * ts->temp_step - ts->temp_offset; 19122369710SChen-Yu Tsai 19222369710SChen-Yu Tsai return 0; 19322369710SChen-Yu Tsai } 19422369710SChen-Yu Tsai 195ad662b1dSDaniel Lezcano static int sun4i_get_tz_temp(struct thermal_zone_device *tz, int *temp) 19622369710SChen-Yu Tsai { 197ad662b1dSDaniel Lezcano return sun4i_get_temp(tz->devdata, temp); 19822369710SChen-Yu Tsai } 19922369710SChen-Yu Tsai 200ad662b1dSDaniel Lezcano static const struct thermal_zone_device_ops sun4i_ts_tz_ops = { 20122369710SChen-Yu Tsai .get_temp = sun4i_get_tz_temp, 20222369710SChen-Yu Tsai }; 20322369710SChen-Yu Tsai 20422369710SChen-Yu Tsai static ssize_t show_temp(struct device *dev, struct device_attribute *devattr, 20522369710SChen-Yu Tsai char *buf) 20622369710SChen-Yu Tsai { 20722369710SChen-Yu Tsai struct sun4i_ts_data *ts = dev_get_drvdata(dev); 20817e8351aSSascha Hauer int temp; 20922369710SChen-Yu Tsai int error; 21022369710SChen-Yu Tsai 21122369710SChen-Yu Tsai error = sun4i_get_temp(ts, &temp); 21222369710SChen-Yu Tsai if (error) 21322369710SChen-Yu Tsai return error; 21422369710SChen-Yu Tsai 21517e8351aSSascha Hauer return sprintf(buf, "%d\n", temp); 216f09f98d3SHans de Goede } 217f09f98d3SHans de Goede 218f09f98d3SHans de Goede static ssize_t show_temp_label(struct device *dev, 219f09f98d3SHans de Goede struct device_attribute *devattr, char *buf) 220f09f98d3SHans de Goede { 221f09f98d3SHans de Goede return sprintf(buf, "SoC temperature\n"); 222f09f98d3SHans de Goede } 223f09f98d3SHans de Goede 224f09f98d3SHans de Goede static DEVICE_ATTR(temp1_input, S_IRUGO, show_temp, NULL); 225f09f98d3SHans de Goede static DEVICE_ATTR(temp1_label, S_IRUGO, show_temp_label, NULL); 226f09f98d3SHans de Goede 227f09f98d3SHans de Goede static struct attribute *sun4i_ts_attrs[] = { 228f09f98d3SHans de Goede &dev_attr_temp1_input.attr, 229f09f98d3SHans de Goede &dev_attr_temp1_label.attr, 230f09f98d3SHans de Goede NULL 231f09f98d3SHans de Goede }; 232f09f98d3SHans de Goede ATTRIBUTE_GROUPS(sun4i_ts); 233f09f98d3SHans de Goede 2346decea7cSHans de Goede static int sun4i_ts_probe(struct platform_device *pdev) 2356decea7cSHans de Goede { 2366decea7cSHans de Goede struct sun4i_ts_data *ts; 2376decea7cSHans de Goede struct device *dev = &pdev->dev; 238f09f98d3SHans de Goede struct device_node *np = dev->of_node; 239f09f98d3SHans de Goede struct device *hwmon; 24097e24b09SChuhong Yuan struct thermal_zone_device *thermal; 2416decea7cSHans de Goede int error; 24243c0e223SChen-Yu Tsai u32 reg; 243f09f98d3SHans de Goede bool ts_attached; 2444ed0e032SJens Thiele u32 tp_sensitive_adjust = 15; 2454ed0e032SJens Thiele u32 filter_type = 1; 2466decea7cSHans de Goede 2476decea7cSHans de Goede ts = devm_kzalloc(dev, sizeof(struct sun4i_ts_data), GFP_KERNEL); 2486decea7cSHans de Goede if (!ts) 2496decea7cSHans de Goede return -ENOMEM; 2506decea7cSHans de Goede 2516decea7cSHans de Goede ts->dev = dev; 2526decea7cSHans de Goede ts->ignore_fifo_data = true; 253f09f98d3SHans de Goede ts->temp_data = -1; 25443c0e223SChen-Yu Tsai if (of_device_is_compatible(np, "allwinner,sun6i-a31-ts")) { 255877bef7dSHans de Goede /* Allwinner SDK has temperature (C) = (value / 6) - 271 */ 256877bef7dSHans de Goede ts->temp_offset = 271000; 25743c0e223SChen-Yu Tsai ts->temp_step = 167; 25891c68a7cSHans de Goede } else if (of_device_is_compatible(np, "allwinner,sun4i-a10-ts")) { 25991c68a7cSHans de Goede /* 26091c68a7cSHans de Goede * The A10 temperature sensor has quite a wide spread, these 26191c68a7cSHans de Goede * parameters are based on the averaging of the calibration 26291c68a7cSHans de Goede * results of 4 completely different boards, with a spread of 263877bef7dSHans de Goede * temp_step from 0.096 - 0.170 and temp_offset from 176 - 331. 26491c68a7cSHans de Goede */ 265877bef7dSHans de Goede ts->temp_offset = 257000; 26691c68a7cSHans de Goede ts->temp_step = 133; 26743c0e223SChen-Yu Tsai } else { 26843c0e223SChen-Yu Tsai /* 26943c0e223SChen-Yu Tsai * The user manuals do not contain the formula for calculating 27043c0e223SChen-Yu Tsai * the temperature. The formula used here is from the AXP209, 27143c0e223SChen-Yu Tsai * which is designed by X-Powers, an affiliate of Allwinner: 27243c0e223SChen-Yu Tsai * 273877bef7dSHans de Goede * temperature (C) = (value * 0.1) - 144.7 27443c0e223SChen-Yu Tsai * 27543c0e223SChen-Yu Tsai * Allwinner does not have any documentation whatsoever for 27643c0e223SChen-Yu Tsai * this hardware. Moreover, it is claimed that the sensor 27743c0e223SChen-Yu Tsai * is inaccurate and cannot work properly. 27843c0e223SChen-Yu Tsai */ 279877bef7dSHans de Goede ts->temp_offset = 144700; 28043c0e223SChen-Yu Tsai ts->temp_step = 100; 28143c0e223SChen-Yu Tsai } 2826decea7cSHans de Goede 283f09f98d3SHans de Goede ts_attached = of_property_read_bool(np, "allwinner,ts-attached"); 284f09f98d3SHans de Goede if (ts_attached) { 2856decea7cSHans de Goede ts->input = devm_input_allocate_device(dev); 2866decea7cSHans de Goede if (!ts->input) 2876decea7cSHans de Goede return -ENOMEM; 2886decea7cSHans de Goede 2896decea7cSHans de Goede ts->input->name = pdev->name; 2906decea7cSHans de Goede ts->input->phys = "sun4i_ts/input0"; 2916decea7cSHans de Goede ts->input->open = sun4i_ts_open; 2926decea7cSHans de Goede ts->input->close = sun4i_ts_close; 2936decea7cSHans de Goede ts->input->id.bustype = BUS_HOST; 2946decea7cSHans de Goede ts->input->id.vendor = 0x0001; 2956decea7cSHans de Goede ts->input->id.product = 0x0001; 2966decea7cSHans de Goede ts->input->id.version = 0x0100; 2976decea7cSHans de Goede ts->input->evbit[0] = BIT(EV_SYN) | BIT(EV_KEY) | BIT(EV_ABS); 2986decea7cSHans de Goede __set_bit(BTN_TOUCH, ts->input->keybit); 2996decea7cSHans de Goede input_set_abs_params(ts->input, ABS_X, 0, 4095, 0, 0); 3006decea7cSHans de Goede input_set_abs_params(ts->input, ABS_Y, 0, 4095, 0, 0); 3016decea7cSHans de Goede input_set_drvdata(ts->input, ts); 302f09f98d3SHans de Goede } 3036decea7cSHans de Goede 3049601fa8fSMukesh Ojha ts->base = devm_platform_ioremap_resource(pdev, 0); 3056decea7cSHans de Goede if (IS_ERR(ts->base)) 3066decea7cSHans de Goede return PTR_ERR(ts->base); 3076decea7cSHans de Goede 3086decea7cSHans de Goede ts->irq = platform_get_irq(pdev, 0); 3096decea7cSHans de Goede error = devm_request_irq(dev, ts->irq, sun4i_ts_irq, 0, "sun4i-ts", ts); 3106decea7cSHans de Goede if (error) 3116decea7cSHans de Goede return error; 3126decea7cSHans de Goede 3136decea7cSHans de Goede /* 3146decea7cSHans de Goede * Select HOSC clk, clkin = clk / 6, adc samplefreq = clkin / 8192, 3156decea7cSHans de Goede * t_acq = clkin / (16 * 64) 3166decea7cSHans de Goede */ 3176decea7cSHans de Goede writel(ADC_CLK_SEL(0) | ADC_CLK_DIV(2) | FS_DIV(7) | T_ACQ(63), 3186decea7cSHans de Goede ts->base + TP_CTRL0); 3196decea7cSHans de Goede 3206decea7cSHans de Goede /* 3214ed0e032SJens Thiele * tp_sensitive_adjust is an optional property 3226decea7cSHans de Goede * tp_mode = 0 : only x and y coordinates, as we don't use dual touch 3236decea7cSHans de Goede */ 3244ed0e032SJens Thiele of_property_read_u32(np, "allwinner,tp-sensitive-adjust", 3254ed0e032SJens Thiele &tp_sensitive_adjust); 3264ed0e032SJens Thiele writel(TP_SENSITIVE_ADJUST(tp_sensitive_adjust) | TP_MODE_SELECT(0), 3276decea7cSHans de Goede ts->base + TP_CTRL2); 3286decea7cSHans de Goede 3294ed0e032SJens Thiele /* 3304ed0e032SJens Thiele * Enable median and averaging filter, optional property for 3314ed0e032SJens Thiele * filter type. 3324ed0e032SJens Thiele */ 3334ed0e032SJens Thiele of_property_read_u32(np, "allwinner,filter-type", &filter_type); 3344ed0e032SJens Thiele writel(FILTER_EN(1) | FILTER_TYPE(filter_type), ts->base + TP_CTRL3); 3356decea7cSHans de Goede 3366decea7cSHans de Goede /* Enable temperature measurement, period 1953 (2 seconds) */ 3376decea7cSHans de Goede writel(TEMP_ENABLE(1) | TEMP_PERIOD(1953), ts->base + TP_TPR); 3386decea7cSHans de Goede 3396decea7cSHans de Goede /* 3406decea7cSHans de Goede * Set stylus up debounce to aprox 10 ms, enable debounce, and 3416decea7cSHans de Goede * finally enable tp mode. 3426decea7cSHans de Goede */ 34343c0e223SChen-Yu Tsai reg = STYLUS_UP_DEBOUN(5) | STYLUS_UP_DEBOUN_EN(1); 34491c68a7cSHans de Goede if (of_device_is_compatible(np, "allwinner,sun6i-a31-ts")) 34543c0e223SChen-Yu Tsai reg |= SUN6I_TP_MODE_EN(1); 34691c68a7cSHans de Goede else 34791c68a7cSHans de Goede reg |= TP_MODE_EN(1); 34843c0e223SChen-Yu Tsai writel(reg, ts->base + TP_CTRL1); 3496decea7cSHans de Goede 35022369710SChen-Yu Tsai /* 35122369710SChen-Yu Tsai * The thermal core does not register hwmon devices for DT-based 35222369710SChen-Yu Tsai * thermal zone sensors, such as this one. 35322369710SChen-Yu Tsai */ 354f09f98d3SHans de Goede hwmon = devm_hwmon_device_register_with_groups(ts->dev, "sun4i_ts", 355f09f98d3SHans de Goede ts, sun4i_ts_groups); 356f09f98d3SHans de Goede if (IS_ERR(hwmon)) 357f09f98d3SHans de Goede return PTR_ERR(hwmon); 358f09f98d3SHans de Goede 359ad662b1dSDaniel Lezcano thermal = devm_thermal_of_zone_register(ts->dev, 0, ts, 36097e24b09SChuhong Yuan &sun4i_ts_tz_ops); 36197e24b09SChuhong Yuan if (IS_ERR(thermal)) 36297e24b09SChuhong Yuan return PTR_ERR(thermal); 36322369710SChen-Yu Tsai 364f09f98d3SHans de Goede writel(TEMP_IRQ_EN(1), ts->base + TP_INT_FIFOC); 365f09f98d3SHans de Goede 366f09f98d3SHans de Goede if (ts_attached) { 3676decea7cSHans de Goede error = input_register_device(ts->input); 368f09f98d3SHans de Goede if (error) { 369f09f98d3SHans de Goede writel(0, ts->base + TP_INT_FIFOC); 3706decea7cSHans de Goede return error; 371f09f98d3SHans de Goede } 372f09f98d3SHans de Goede } 3736decea7cSHans de Goede 3746decea7cSHans de Goede platform_set_drvdata(pdev, ts); 3756decea7cSHans de Goede return 0; 3766decea7cSHans de Goede } 3776decea7cSHans de Goede 378f09f98d3SHans de Goede static int sun4i_ts_remove(struct platform_device *pdev) 379f09f98d3SHans de Goede { 380f09f98d3SHans de Goede struct sun4i_ts_data *ts = platform_get_drvdata(pdev); 381f09f98d3SHans de Goede 382f09f98d3SHans de Goede /* Explicit unregister to avoid open/close changing the imask later */ 383f09f98d3SHans de Goede if (ts->input) 384f09f98d3SHans de Goede input_unregister_device(ts->input); 385f09f98d3SHans de Goede 386f09f98d3SHans de Goede /* Deactivate all IRQs */ 387f09f98d3SHans de Goede writel(0, ts->base + TP_INT_FIFOC); 388f09f98d3SHans de Goede 389f09f98d3SHans de Goede return 0; 390f09f98d3SHans de Goede } 391f09f98d3SHans de Goede 3926decea7cSHans de Goede static const struct of_device_id sun4i_ts_of_match[] = { 3936decea7cSHans de Goede { .compatible = "allwinner,sun4i-a10-ts", }, 39491c68a7cSHans de Goede { .compatible = "allwinner,sun5i-a13-ts", }, 39543c0e223SChen-Yu Tsai { .compatible = "allwinner,sun6i-a31-ts", }, 3966decea7cSHans de Goede { /* sentinel */ } 3976decea7cSHans de Goede }; 3986decea7cSHans de Goede MODULE_DEVICE_TABLE(of, sun4i_ts_of_match); 3996decea7cSHans de Goede 4006decea7cSHans de Goede static struct platform_driver sun4i_ts_driver = { 4016decea7cSHans de Goede .driver = { 4026decea7cSHans de Goede .name = "sun4i-ts", 403*f92dd6d0SKrzysztof Kozlowski .of_match_table = sun4i_ts_of_match, 4046decea7cSHans de Goede }, 4056decea7cSHans de Goede .probe = sun4i_ts_probe, 406f09f98d3SHans de Goede .remove = sun4i_ts_remove, 4076decea7cSHans de Goede }; 4086decea7cSHans de Goede 4096decea7cSHans de Goede module_platform_driver(sun4i_ts_driver); 4106decea7cSHans de Goede 4116decea7cSHans de Goede MODULE_DESCRIPTION("Allwinner sun4i resistive touchscreen controller driver"); 4126decea7cSHans de Goede MODULE_AUTHOR("Hans de Goede <hdegoede@redhat.com>"); 4136decea7cSHans de Goede MODULE_LICENSE("GPL"); 414