Lines Matching +full:odd +full:- +full:numbered
2 * DRM driver for Pervasive Displays RePaper branded e-ink panels
4 * Copyright 2013-2017 Pervasive Displays, Inc.
21 #include <linux/dma-buf.h>
31 #include <drm/tinydrm/tinydrm-helpers.h>
42 enum repaper_stage { /* Image pixel -> Display pixel */
43 REPAPER_COMPENSATE, /* B -> W, W -> B (Current Image) */
44 REPAPER_WHITE, /* B -> N, W -> W (Current Image) */
45 REPAPER_INVERSE, /* B -> N, W -> B (New Image) */
46 REPAPER_NORMAL /* B -> B, W -> W (New Image) */
101 return -ENOMEM; in repaper_spi_transfer()
111 ret = -ENOMEM; in repaper_spi_transfer()
120 ret = -ENOMEM; in repaper_spi_transfer()
190 /* pixels on display are numbered from 1 so even is actually bits 1,3,5,... */
197 for (b = 0; b < (epd->width / 8); b++) { in repaper_even_pixels()
209 case REPAPER_COMPENSATE: /* B -> W, W -> B (Current) */ in repaper_even_pixels()
212 case REPAPER_WHITE: /* B -> N, W -> W (Current) */ in repaper_even_pixels()
215 case REPAPER_INVERSE: /* B -> N, W -> B (New) */ in repaper_even_pixels()
218 case REPAPER_NORMAL: /* B -> B, W -> W (New) */ in repaper_even_pixels()
236 /* pixels on display are numbered from 1 so odd is actually bits 0,2,4,... */
243 for (b = epd->width / 8; b > 0; b--) { in repaper_odd_pixels()
245 u8 pixels = data[b - 1] & 0x55; in repaper_odd_pixels()
249 pixel_mask = (mask[b - 1] ^ pixels) & 0x55; in repaper_odd_pixels()
254 case REPAPER_COMPENSATE: /* B -> W, W -> B (Current) */ in repaper_odd_pixels()
257 case REPAPER_WHITE: /* B -> N, W -> W (Current) */ in repaper_odd_pixels()
260 case REPAPER_INVERSE: /* B -> N, W -> B (New) */ in repaper_odd_pixels()
263 case REPAPER_NORMAL: /* B -> B, W -> W (New) */ in repaper_odd_pixels()
276 /* interleave bits: (byte)76543210 -> (16 bit).7.6.5.4.3.2.1 */
286 /* pixels on display are numbered from 1 */
293 for (b = epd->width / 8; b > 0; b--) { in repaper_all_pixels()
295 u16 pixels = repaper_interleave_bits(data[b - 1]); in repaper_all_pixels()
299 pixel_mask = repaper_interleave_bits(mask[b - 1]); in repaper_all_pixels()
306 case REPAPER_COMPENSATE: /* B -> W, W -> B (Current) */ in repaper_all_pixels()
309 case REPAPER_WHITE: /* B -> N, W -> W (Current) */ in repaper_all_pixels()
312 case REPAPER_INVERSE: /* B -> N, W -> B (New) */ in repaper_all_pixels()
315 case REPAPER_NORMAL: /* B -> B, W -> W (New) */ in repaper_all_pixels()
335 u8 *p = epd->line_buffer; in repaper_one_line()
338 repaper_spi_mosi_low(epd->spi); in repaper_one_line()
340 if (epd->pre_border_byte) in repaper_one_line()
343 if (epd->middle_scan) { in repaper_one_line()
348 for (b = epd->bytes_per_scan; b > 0; b--) { in repaper_one_line()
349 if (line / 4 == b - 1) in repaper_one_line()
359 * even scan line, but as lines on display are numbered from 1, in repaper_one_line()
362 for (b = 0; b < epd->bytes_per_scan; b++) { in repaper_one_line()
373 * odd scan line, but as lines on display are numbered from 1, in repaper_one_line()
376 for (b = epd->bytes_per_scan; b > 0; b--) { in repaper_one_line()
377 if (0 == (line & 0x01) && line / 8 == b - 1) in repaper_one_line()
384 switch (epd->border_byte) { in repaper_one_line()
406 repaper_write_buf(epd->spi, 0x0a, epd->line_buffer, in repaper_one_line()
407 p - epd->line_buffer); in repaper_one_line()
410 repaper_write_val(epd->spi, 0x02, 0x07); in repaper_one_line()
412 repaper_spi_mosi_low(epd->spi); in repaper_one_line()
420 for (line = 0; line < epd->height; line++) in repaper_frame_fixed()
430 for (line = 0; line < epd->height; line++) { in repaper_frame_data()
432 &image[line * (epd->width / 8)], in repaper_frame_data()
436 for (line = 0; line < epd->height; line++) { in repaper_frame_data()
437 size_t n = line * epd->width / 8; in repaper_frame_data()
449 u64 end = start + (epd->factored_stage_time * 1000 * 1000); in repaper_frame_fixed_repeat()
460 u64 end = start + (epd->factored_stage_time * 1000 * 1000); in repaper_frame_data_repeat()
472 if (!epd->thermal) in repaper_get_temperature()
475 ret = thermal_zone_get_temp(epd->thermal, &temperature); in repaper_get_temperature()
477 DRM_DEV_ERROR(&epd->spi->dev, "Failed to get temperature (%d)\n", ret); in repaper_get_temperature()
483 if (temperature <= -10) in repaper_get_temperature()
485 else if (temperature <= -5) in repaper_get_temperature()
500 epd->factored_stage_time = epd->stage_time * factor10x / 10; in repaper_get_temperature()
530 struct dma_buf_attachment *import_attach = cma_obj->base.import_attach; in repaper_fb_dirty()
531 struct tinydrm_device *tdev = fb->dev->dev_private; in repaper_fb_dirty()
539 clip.x2 = fb->width; in repaper_fb_dirty()
541 clip.y2 = fb->height; in repaper_fb_dirty()
543 if (!epd->enabled) in repaper_fb_dirty()
548 DRM_DEBUG("Flushing [FB:%d] st=%ums\n", fb->base.id, in repaper_fb_dirty()
549 epd->factored_stage_time); in repaper_fb_dirty()
551 buf = kmalloc_array(fb->width, fb->height, GFP_KERNEL); in repaper_fb_dirty()
553 return -ENOMEM; in repaper_fb_dirty()
556 ret = dma_buf_begin_cpu_access(import_attach->dmabuf, in repaper_fb_dirty()
562 tinydrm_xrgb8888_to_gray8(buf, cma_obj->vaddr, fb, &clip); in repaper_fb_dirty()
565 ret = dma_buf_end_cpu_access(import_attach->dmabuf, in repaper_fb_dirty()
571 repaper_gray8_to_mono_reversed(buf, fb->width, fb->height); in repaper_fb_dirty()
573 if (epd->partial) { in repaper_fb_dirty()
574 repaper_frame_data_repeat(epd, buf, epd->current_frame, in repaper_fb_dirty()
576 } else if (epd->cleared) { in repaper_fb_dirty()
577 repaper_frame_data_repeat(epd, epd->current_frame, NULL, in repaper_fb_dirty()
579 repaper_frame_data_repeat(epd, epd->current_frame, NULL, in repaper_fb_dirty()
584 epd->partial = true; in repaper_fb_dirty()
586 /* Clear display (anything -> white) */ in repaper_fb_dirty()
598 epd->cleared = true; in repaper_fb_dirty()
599 epd->partial = true; in repaper_fb_dirty()
602 memcpy(epd->current_frame, buf, fb->width * fb->height / 8); in repaper_fb_dirty()
608 if (epd->pre_border_byte) { in repaper_fb_dirty()
611 for (x = 0; x < (fb->width / 8); x++) in repaper_fb_dirty()
612 if (buf[x + (fb->width * (fb->height - 1) / 8)]) { in repaper_fb_dirty()
614 epd->current_frame, in repaper_fb_dirty()
635 gpiod_set_value_cansleep(epd->reset, 0); in power_off()
636 gpiod_set_value_cansleep(epd->panel_on, 0); in power_off()
637 if (epd->border) in power_off()
638 gpiod_set_value_cansleep(epd->border, 0); in power_off()
641 repaper_spi_mosi_low(epd->spi); in power_off()
644 gpiod_set_value_cansleep(epd->discharge, 1); in power_off()
646 gpiod_set_value_cansleep(epd->discharge, 0); in power_off()
655 struct spi_device *spi = epd->spi; in repaper_pipe_enable()
656 struct device *dev = &spi->dev; in repaper_pipe_enable()
663 gpiod_set_value_cansleep(epd->reset, 0); in repaper_pipe_enable()
664 gpiod_set_value_cansleep(epd->panel_on, 0); in repaper_pipe_enable()
665 gpiod_set_value_cansleep(epd->discharge, 0); in repaper_pipe_enable()
666 if (epd->border) in repaper_pipe_enable()
667 gpiod_set_value_cansleep(epd->border, 0); in repaper_pipe_enable()
671 gpiod_set_value_cansleep(epd->panel_on, 1); in repaper_pipe_enable()
677 gpiod_set_value_cansleep(epd->reset, 1); in repaper_pipe_enable()
678 if (epd->border) in repaper_pipe_enable()
679 gpiod_set_value_cansleep(epd->border, 1); in repaper_pipe_enable()
681 gpiod_set_value_cansleep(epd->reset, 0); in repaper_pipe_enable()
683 gpiod_set_value_cansleep(epd->reset, 1); in repaper_pipe_enable()
687 for (i = 100; i > 0; i--) { in repaper_pipe_enable()
688 if (!gpiod_get_value_cansleep(epd->busy)) in repaper_pipe_enable()
727 repaper_write_buf(spi, 0x01, epd->channel_select, 8); in repaper_pipe_enable()
744 /* Charge pump positive voltage on - VGH/VDL on */ in repaper_pipe_enable()
748 /* Charge pump negative voltage on - VGL/VDL on */ in repaper_pipe_enable()
752 /* Charge pump Vcom on - Vcom driver on */ in repaper_pipe_enable()
782 epd->enabled = true; in repaper_pipe_enable()
783 epd->partial = false; in repaper_pipe_enable()
790 struct spi_device *spi = epd->spi; in repaper_pipe_disable()
795 mutex_lock(&tdev->dirty_lock); in repaper_pipe_disable()
796 epd->enabled = false; in repaper_pipe_disable()
797 mutex_unlock(&tdev->dirty_lock); in repaper_pipe_disable()
800 for (line = 0; line < epd->height; line++) in repaper_pipe_disable()
805 if (epd->border) { in repaper_pipe_disable()
810 gpiod_set_value_cansleep(epd->border, 0); in repaper_pipe_disable()
812 gpiod_set_value_cansleep(epd->border, 1); in repaper_pipe_disable()
887 .desc = "Pervasive Displays RePaper e-ink panels",
916 struct device *dev = &spi->dev; in repaper_probe()
926 model = (enum repaper_model)match->data; in repaper_probe()
929 model = spi_id->driver_data; in repaper_probe()
933 if (!dev->coherent_dma_mask) { in repaper_probe()
943 return -ENOMEM; in repaper_probe()
945 epd->spi = spi; in repaper_probe()
947 epd->panel_on = devm_gpiod_get(dev, "panel-on", GPIOD_OUT_LOW); in repaper_probe()
948 if (IS_ERR(epd->panel_on)) { in repaper_probe()
949 ret = PTR_ERR(epd->panel_on); in repaper_probe()
950 if (ret != -EPROBE_DEFER) in repaper_probe()
951 DRM_DEV_ERROR(dev, "Failed to get gpio 'panel-on'\n"); in repaper_probe()
955 epd->discharge = devm_gpiod_get(dev, "discharge", GPIOD_OUT_LOW); in repaper_probe()
956 if (IS_ERR(epd->discharge)) { in repaper_probe()
957 ret = PTR_ERR(epd->discharge); in repaper_probe()
958 if (ret != -EPROBE_DEFER) in repaper_probe()
963 epd->reset = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW); in repaper_probe()
964 if (IS_ERR(epd->reset)) { in repaper_probe()
965 ret = PTR_ERR(epd->reset); in repaper_probe()
966 if (ret != -EPROBE_DEFER) in repaper_probe()
971 epd->busy = devm_gpiod_get(dev, "busy", GPIOD_IN); in repaper_probe()
972 if (IS_ERR(epd->busy)) { in repaper_probe()
973 ret = PTR_ERR(epd->busy); in repaper_probe()
974 if (ret != -EPROBE_DEFER) in repaper_probe()
979 if (!device_property_read_string(dev, "pervasive,thermal-zone", in repaper_probe()
981 epd->thermal = thermal_zone_get_zone_by_name(thermal_zone); in repaper_probe()
982 if (IS_ERR(epd->thermal)) { in repaper_probe()
984 return PTR_ERR(epd->thermal); in repaper_probe()
991 epd->channel_select = repaper_e1144cs021_cs; in repaper_probe()
992 epd->stage_time = 480; in repaper_probe()
993 epd->bytes_per_scan = 96 / 4; in repaper_probe()
994 epd->middle_scan = true; /* data-scan-data */ in repaper_probe()
995 epd->pre_border_byte = false; in repaper_probe()
996 epd->border_byte = REPAPER_BORDER_BYTE_ZERO; in repaper_probe()
1001 epd->channel_select = repaper_e1190cs021_cs; in repaper_probe()
1002 epd->stage_time = 480; in repaper_probe()
1003 epd->bytes_per_scan = 128 / 4 / 2; in repaper_probe()
1004 epd->middle_scan = false; /* scan-data-scan */ in repaper_probe()
1005 epd->pre_border_byte = false; in repaper_probe()
1006 epd->border_byte = REPAPER_BORDER_BYTE_SET; in repaper_probe()
1011 epd->channel_select = repaper_e2200cs021_cs; in repaper_probe()
1012 epd->stage_time = 480; in repaper_probe()
1013 epd->bytes_per_scan = 96 / 4; in repaper_probe()
1014 epd->middle_scan = true; /* data-scan-data */ in repaper_probe()
1015 epd->pre_border_byte = true; in repaper_probe()
1016 epd->border_byte = REPAPER_BORDER_BYTE_NONE; in repaper_probe()
1020 epd->border = devm_gpiod_get(dev, "border", GPIOD_OUT_LOW); in repaper_probe()
1021 if (IS_ERR(epd->border)) { in repaper_probe()
1022 ret = PTR_ERR(epd->border); in repaper_probe()
1023 if (ret != -EPROBE_DEFER) in repaper_probe()
1029 epd->channel_select = repaper_e2271cs021_cs; in repaper_probe()
1030 epd->stage_time = 630; in repaper_probe()
1031 epd->bytes_per_scan = 176 / 4; in repaper_probe()
1032 epd->middle_scan = true; /* data-scan-data */ in repaper_probe()
1033 epd->pre_border_byte = true; in repaper_probe()
1034 epd->border_byte = REPAPER_BORDER_BYTE_NONE; in repaper_probe()
1038 return -ENODEV; in repaper_probe()
1041 epd->width = mode->hdisplay; in repaper_probe()
1042 epd->height = mode->vdisplay; in repaper_probe()
1043 epd->factored_stage_time = epd->stage_time; in repaper_probe()
1045 line_buffer_size = 2 * epd->width / 8 + epd->bytes_per_scan + 2; in repaper_probe()
1046 epd->line_buffer = devm_kzalloc(dev, line_buffer_size, GFP_KERNEL); in repaper_probe()
1047 if (!epd->line_buffer) in repaper_probe()
1048 return -ENOMEM; in repaper_probe()
1050 epd->current_frame = devm_kzalloc(dev, epd->width * epd->height / 8, in repaper_probe()
1052 if (!epd->current_frame) in repaper_probe()
1053 return -ENOMEM; in repaper_probe()
1055 tdev = &epd->tinydrm; in repaper_probe()
1061 tdev->fb_dirty = repaper_fb_dirty; in repaper_probe()
1070 drm_mode_config_reset(tdev->drm); in repaper_probe()
1073 DRM_DEBUG_DRIVER("SPI speed: %uMHz\n", spi->max_speed_hz / 1000000); in repaper_probe()