drivers/video/fbdev/mmp/panel/tpo_tj032md01bw.c

Source file repositories/reference/linux-study-clean/drivers/video/fbdev/mmp/panel/tpo_tj032md01bw.c

File Facts

System
Linux kernel
Corpus path
drivers/video/fbdev/mmp/panel/tpo_tj032md01bw.c
Extension
.c
Size
3266 bytes
Lines
173
Domain
Driver Families
Bucket
drivers/video
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

struct tpohvga_plat_data {
	void (*plat_onoff)(int status);
	struct spi_device *spi;
};

static void tpohvga_onoff(struct mmp_panel *panel, int status)
{
	struct tpohvga_plat_data *plat = panel->plat_data;
	int ret;

	if (status) {
		plat->plat_onoff(1);

		ret = spi_write(plat->spi, init, sizeof(init));
		if (ret < 0)
			dev_warn(panel->dev, "init cmd failed(%d)\n", ret);
	} else {
		ret = spi_write(plat->spi, poweroff, sizeof(poweroff));
		if (ret < 0)
			dev_warn(panel->dev, "poweroff cmd failed(%d)\n", ret);

		plat->plat_onoff(0);
	}
}

static struct mmp_mode mmp_modes_tpohvga[] = {
	[0] = {
		.pixclock_freq = 10394400,
		.refresh = 60,
		.xres = 320,
		.yres = 480,
		.hsync_len = 10,
		.left_margin = 15,
		.right_margin = 10,
		.vsync_len = 2,
		.upper_margin = 4,
		.lower_margin = 2,
		.invert_pixclock = 1,
		.pix_fmt_out = PIXFMT_RGB565,
	},
};

static int tpohvga_get_modelist(struct mmp_panel *panel,
		struct mmp_mode **modelist)
{
	*modelist = mmp_modes_tpohvga;
	return 1;
}

static struct mmp_panel panel_tpohvga = {
	.name = "tpohvga",
	.panel_type = PANELTYPE_ACTIVE,
	.get_modelist = tpohvga_get_modelist,
	.set_onoff = tpohvga_onoff,
};

static int tpohvga_probe(struct spi_device *spi)
{
	struct mmp_mach_panel_info *mi;
	int ret;
	struct tpohvga_plat_data *plat_data;

	/* get configs from platform data */
	mi = spi->dev.platform_data;
	if (mi == NULL) {
		dev_err(&spi->dev, "%s: no platform data defined\n", __func__);
		return -EINVAL;
	}

	/* setup spi related info */
	spi->bits_per_word = 16;
	ret = spi_setup(spi);
	if (ret < 0) {
		dev_err(&spi->dev, "spi setup failed %d", ret);
		return ret;
	}

	plat_data = kzalloc_obj(*plat_data);
	if (plat_data == NULL)
		return -ENOMEM;

	plat_data->spi = spi;
	plat_data->plat_onoff = mi->plat_set_onoff;
	panel_tpohvga.plat_data = plat_data;
	panel_tpohvga.plat_path_name = mi->plat_path_name;
	panel_tpohvga.dev = &spi->dev;

	mmp_register_panel(&panel_tpohvga);

	return 0;

Annotation

Implementation Notes