Adding upstream version 6.1.76.upstream/6.1.76upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 186 insertions, 0 deletions

diff --git a/drivers/staging/fbtft/fb_st7735r.c b/drivers/staging/fbtft/fb_st7735r.c
new file mode 100644
index 000000000..9670a8989
--- /dev/null
+++ b/drivers/staging/fbtft/fb_st7735r.c
@@ -0,0 +1,186 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * FB driver for the ST7735R LCD Controller
+ *
+ * Copyright (C) 2013 Noralf Tronnes
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <video/mipi_display.h>
+
+#include "fbtft.h"
+
+#define DRVNAME "fb_st7735r"
+#define DEFAULT_GAMMA   "0F 1A 0F 18 2F 28 20 22 1F 1B 23 37 00 07 02 10\n" \
+			"0F 1B 0F 17 33 2C 29 2E 30 30 39 3F 00 07 03 10"
+
+static const s16 default_init_sequence[] = {
+	-1, MIPI_DCS_SOFT_RESET,
+	-2, 150,                               /* delay */
+
+	-1, MIPI_DCS_EXIT_SLEEP_MODE,
+	-2, 500,                               /* delay */
+
+	/* FRMCTR1 - frame rate control: normal mode
+	 * frame rate = fosc / (1 x 2 + 40) * (LINE + 2C + 2D)
+	 */
+	-1, 0xB1, 0x01, 0x2C, 0x2D,
+
+	/* FRMCTR2 - frame rate control: idle mode
+	 * frame rate = fosc / (1 x 2 + 40) * (LINE + 2C + 2D)
+	 */
+	-1, 0xB2, 0x01, 0x2C, 0x2D,
+
+	/* FRMCTR3 - frame rate control - partial mode
+	 * dot inversion mode, line inversion mode
+	 */
+	-1, 0xB3, 0x01, 0x2C, 0x2D, 0x01, 0x2C, 0x2D,
+
+	/* INVCTR - display inversion control
+	 * no inversion
+	 */
+	-1, 0xB4, 0x07,
+
+	/* PWCTR1 - Power Control
+	 * -4.6V, AUTO mode
+	 */
+	-1, 0xC0, 0xA2, 0x02, 0x84,
+
+	/* PWCTR2 - Power Control
+	 * VGH25 = 2.4C VGSEL = -10 VGH = 3 * AVDD
+	 */
+	-1, 0xC1, 0xC5,
+
+	/* PWCTR3 - Power Control
+	 * Opamp current small, Boost frequency
+	 */
+	-1, 0xC2, 0x0A, 0x00,
+
+	/* PWCTR4 - Power Control
+	 * BCLK/2, Opamp current small & Medium low
+	 */
+	-1, 0xC3, 0x8A, 0x2A,
+
+	/* PWCTR5 - Power Control */
+	-1, 0xC4, 0x8A, 0xEE,
+
+	/* VMCTR1 - Power Control */
+	-1, 0xC5, 0x0E,
+
+	-1, MIPI_DCS_EXIT_INVERT_MODE,
+
+	-1, MIPI_DCS_SET_PIXEL_FORMAT, MIPI_DCS_PIXEL_FMT_16BIT,
+
+	-1, MIPI_DCS_SET_DISPLAY_ON,
+	-2, 100,                               /* delay */
+
+	-1, MIPI_DCS_ENTER_NORMAL_MODE,
+	-2, 10,                               /* delay */
+
+	/* end marker */
+	-3
+};
+
+static void set_addr_win(struct fbtft_par *par, int xs, int ys, int xe, int ye)
+{
+	write_reg(par, MIPI_DCS_SET_COLUMN_ADDRESS,
+		  xs >> 8, xs & 0xFF, xe >> 8, xe & 0xFF);
+
+	write_reg(par, MIPI_DCS_SET_PAGE_ADDRESS,
+		  ys >> 8, ys & 0xFF, ye >> 8, ye & 0xFF);
+
+	write_reg(par, MIPI_DCS_WRITE_MEMORY_START);
+}
+
+#define MY BIT(7)
+#define MX BIT(6)
+#define MV BIT(5)
+static int set_var(struct fbtft_par *par)
+{
+	/* MADCTL - Memory data access control
+	 * RGB/BGR:
+	 * 1. Mode selection pin SRGB
+	 *    RGB H/W pin for color filter setting: 0=RGB, 1=BGR
+	 * 2. MADCTL RGB bit
+	 *    RGB-BGR ORDER color filter panel: 0=RGB, 1=BGR
+	 */
+	switch (par->info->var.rotate) {
+	case 0:
+		write_reg(par, MIPI_DCS_SET_ADDRESS_MODE,
+			  MX | MY | (par->bgr << 3));
+		break;
+	case 270:
+		write_reg(par, MIPI_DCS_SET_ADDRESS_MODE,
+			  MY | MV | (par->bgr << 3));
+		break;
+	case 180:
+		write_reg(par, MIPI_DCS_SET_ADDRESS_MODE,
+			  par->bgr << 3);
+		break;
+	case 90:
+		write_reg(par, MIPI_DCS_SET_ADDRESS_MODE,
+			  MX | MV | (par->bgr << 3));
+		break;
+	}
+
+	return 0;
+}
+
+/*
+ * Gamma string format:
+ * VRF0P VOS0P PK0P PK1P PK2P PK3P PK4P PK5P PK6P PK7P PK8P PK9P SELV0P SELV1P SELV62P SELV63P
+ * VRF0N VOS0N PK0N PK1N PK2N PK3N PK4N PK5N PK6N PK7N PK8N PK9N SELV0N SELV1N SELV62N SELV63N
+ */
+#define CURVE(num, idx)  curves[(num) * par->gamma.num_values + (idx)]
+static int set_gamma(struct fbtft_par *par, u32 *curves)
+{
+	int i, j;
+
+	/* apply mask */
+	for (i = 0; i < par->gamma.num_curves; i++)
+		for (j = 0; j < par->gamma.num_values; j++)
+			CURVE(i, j) &= 0x3f;
+
+	for (i = 0; i < par->gamma.num_curves; i++)
+		write_reg(par, 0xE0 + i,
+			  CURVE(i, 0),  CURVE(i, 1),
+			  CURVE(i, 2),  CURVE(i, 3),
+			  CURVE(i, 4),  CURVE(i, 5),
+			  CURVE(i, 6),  CURVE(i, 7),
+			  CURVE(i, 8),  CURVE(i, 9),
+			  CURVE(i, 10), CURVE(i, 11),
+			  CURVE(i, 12), CURVE(i, 13),
+			  CURVE(i, 14), CURVE(i, 15));
+
+	return 0;
+}
+
+#undef CURVE
+
+static struct fbtft_display display = {
+	.regwidth = 8,
+	.width = 128,
+	.height = 160,
+	.init_sequence = default_init_sequence,
+	.gamma_num = 2,
+	.gamma_len = 16,
+	.gamma = DEFAULT_GAMMA,
+	.fbtftops = {
+		.set_addr_win = set_addr_win,
+		.set_var = set_var,
+		.set_gamma = set_gamma,
+	},
+};
+
+FBTFT_REGISTER_DRIVER(DRVNAME, "sitronix,st7735r", &display);
+
+MODULE_ALIAS("spi:" DRVNAME);
+MODULE_ALIAS("platform:" DRVNAME);
+MODULE_ALIAS("spi:st7735r");
+MODULE_ALIAS("platform:st7735r");
+
+MODULE_DESCRIPTION("FB driver for the ST7735R LCD Controller");
+MODULE_AUTHOR("Noralf Tronnes");
+MODULE_LICENSE("GPL");