diff options
Diffstat (limited to 'drivers/input')
| -rw-r--r-- | drivers/input/misc/hbtp_input.c | 124 |
1 files changed, 122 insertions, 2 deletions
diff --git a/drivers/input/misc/hbtp_input.c b/drivers/input/misc/hbtp_input.c index 7a701647a612..2fe56ff541a3 100644 --- a/drivers/input/misc/hbtp_input.c +++ b/drivers/input/misc/hbtp_input.c @@ -1,5 +1,5 @@ -/* Copyright (c) 2014-2015, The Linux Foundation. All rights reserved. +/* Copyright (c) 2014-2016, The Linux Foundation. All rights reserved. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 and @@ -30,6 +30,7 @@ #endif #define HBTP_INPUT_NAME "hbtp_input" +#define DISP_COORDS_SIZE 2 struct hbtp_data { struct platform_device *pdev; @@ -48,6 +49,14 @@ struct hbtp_data { int dig_load_ua; int dig_vtg_min_uv; int dig_vtg_max_uv; + int disp_maxx; /* Display Max X */ + int disp_maxy; /* Display Max Y */ + int def_maxx; /* Default Max X */ + int def_maxy; /* Default Max Y */ + int des_maxx; /* Desired Max X */ + int des_maxy; /* Desired Max Y */ + bool use_scaling; + bool override_disp_coords; bool manage_afe_power_ana; bool manage_power_dig; }; @@ -140,6 +149,13 @@ static int hbtp_input_create_input_dev(struct hbtp_input_absinfo *absinfo) abs->minimum, abs->maximum, 0, 0); } + if (hbtp->override_disp_coords) { + input_set_abs_params(input_dev, ABS_MT_POSITION_X, + 0, hbtp->disp_maxx, 0, 0); + input_set_abs_params(input_dev, ABS_MT_POSITION_Y, + 0, hbtp->disp_maxy, 0, 0); + } + error = input_register_device(input_dev); if (error) { pr_err("%s: input_register_device failed\n", __func__); @@ -184,9 +200,29 @@ static int hbtp_input_report_events(struct hbtp_data *hbtp_data, input_report_abs(hbtp_data->input_dev, ABS_MT_PRESSURE, tch->pressure); + /* + * Scale up/down the X-coordinate as per + * DT property + */ + if (hbtp_data->use_scaling && + hbtp_data->def_maxx > 0 && + hbtp_data->des_maxx > 0) + tch->x = (tch->x * hbtp_data->des_maxx) + / hbtp_data->def_maxx; + input_report_abs(hbtp_data->input_dev, ABS_MT_POSITION_X, tch->x); + /* + * Scale up/down the Y-coordinate as per + * DT property + */ + if (hbtp_data->use_scaling && + hbtp_data->def_maxy > 0 && + hbtp_data->des_maxy > 0) + tch->y = (tch->y * hbtp_data->des_maxy) + / hbtp_data->def_maxy; + input_report_abs(hbtp_data->input_dev, ABS_MT_POSITION_Y, tch->y); @@ -416,9 +452,11 @@ MODULE_ALIAS("devname:" HBTP_INPUT_NAME); #ifdef CONFIG_OF static int hbtp_parse_dt(struct device *dev) { - int rc; + int rc, size; struct device_node *np = dev->of_node; + struct property *prop; u32 temp_val; + u32 disp_reso[DISP_COORDS_SIZE]; if (of_find_property(np, "vcc_ana-supply", NULL)) hbtp->manage_afe_power_ana = true; @@ -476,6 +514,88 @@ static int hbtp_parse_dt(struct device *dev) } } + prop = of_find_property(np, "qcom,display-resolution", NULL); + if (prop != NULL) { + if (!prop->value) + return -ENODATA; + + size = prop->length / sizeof(u32); + if (size != DISP_COORDS_SIZE) { + dev_err(dev, "invalid qcom,display-resolution DT property\n"); + return -EINVAL; + } + + rc = of_property_read_u32_array(np, "qcom,display-resolution", + disp_reso, size); + if (rc && (rc != -EINVAL)) { + dev_err(dev, "Unable to read DT property qcom,display-resolution\n"); + return rc; + } + + hbtp->disp_maxx = disp_reso[0]; + hbtp->disp_maxy = disp_reso[1]; + + hbtp->override_disp_coords = true; + } + + hbtp->use_scaling = of_property_read_bool(np, "qcom,use-scale"); + if (hbtp->use_scaling) { + rc = of_property_read_u32(np, "qcom,default-max-x", &temp_val); + if (!rc) { + hbtp->def_maxx = (int) temp_val; + } else if (rc && (rc != -EINVAL)) { + dev_err(dev, "Unable to read default max x\n"); + return rc; + } + + rc = of_property_read_u32(np, "qcom,desired-max-x", &temp_val); + if (!rc) { + hbtp->des_maxx = (int) temp_val; + } else if (rc && (rc != -EINVAL)) { + dev_err(dev, "Unable to read desired max x\n"); + return rc; + } + + /* + * Either both DT properties i.e. Default max X and + * Desired max X should be defined simultaneously, or none + * of them should be defined. + */ + if ((hbtp->def_maxx == 0 && hbtp->des_maxx != 0) || + (hbtp->def_maxx != 0 && hbtp->des_maxx == 0)) { + dev_err(dev, "default or desired max-X properties are incorrect\n"); + return -EINVAL; + } + + rc = of_property_read_u32(np, "qcom,default-max-y", &temp_val); + if (!rc) { + hbtp->def_maxy = (int) temp_val; + } else if (rc && (rc != -EINVAL)) { + dev_err(dev, "Unable to read default max y\n"); + return rc; + } + + rc = of_property_read_u32(np, "qcom,desired-max-y", &temp_val); + if (!rc) { + hbtp->des_maxy = (int) temp_val; + } else if (rc && (rc != -EINVAL)) { + dev_err(dev, "Unable to read desired max y\n"); + return rc; + } + + /* + * Either both DT properties i.e. Default max X and + * Desired max X should be defined simultaneously, or none + * of them should be defined. + */ + if (!((hbtp->def_maxy == 0 && hbtp->des_maxy != 0) || + (hbtp->def_maxy != 0 && hbtp->des_maxy == 0))) { + dev_err(dev, "default or desired max-Y properties are incorrect\n"); + return -EINVAL; + } + + } + return 0; } #else |