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793f8ab62c
Add kernel patches for version 6.1. Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
556 lines
15 KiB
Diff
556 lines
15 KiB
Diff
From bf7ce2d1c54900ac19fef0bf0e317732682820e5 Mon Sep 17 00:00:00 2001
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From: Dave Stevenson <dave.stevenson@raspberrypi.com>
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Date: Tue, 1 Feb 2022 15:27:01 +0000
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Subject: [PATCH] drm/panel/panel-sitronix-st7701: Support SPI config
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and RGB data
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The ST7701 supports numerous different interface mechanisms for
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MIPI DSI, RGB, or SPI. The driver was only implementing DSI input,
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so add RGB parallel input with SPI configuration.
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Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
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---
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drivers/gpu/drm/panel/panel-sitronix-st7701.c | 374 ++++++++++++++++--
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1 file changed, 351 insertions(+), 23 deletions(-)
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--- a/drivers/gpu/drm/panel/panel-sitronix-st7701.c
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+++ b/drivers/gpu/drm/panel/panel-sitronix-st7701.c
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@@ -7,16 +7,21 @@
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#include <drm/drm_mipi_dsi.h>
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#include <drm/drm_modes.h>
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#include <drm/drm_panel.h>
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+#include <drm/drm_print.h>
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#include <linux/bitfield.h>
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#include <linux/gpio/consumer.h>
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#include <linux/delay.h>
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+#include <linux/media-bus-format.h>
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#include <linux/module.h>
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#include <linux/of_device.h>
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#include <linux/regulator/consumer.h>
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+#include <linux/spi/spi.h>
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#include <video/mipi_display.h>
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+#define SPI_DATA_FLAG 0x100
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+
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/* Command2 BKx selection command */
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#define DSI_CMD2BKX_SEL 0xFF
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@@ -53,6 +58,10 @@
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#define DSI_CMD2BK1_SEL 0x11
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#define DSI_CMD2BK3_SEL 0x13
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#define DSI_CMD2BKX_SEL_NONE 0x00
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+#define SPI_CMD2BK3_SEL (SPI_DATA_FLAG | DSI_CMD2BK3_SEL)
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+#define SPI_CMD2BK1_SEL (SPI_DATA_FLAG | DSI_CMD2BK1_SEL)
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+#define SPI_CMD2BK0_SEL (SPI_DATA_FLAG | DSI_CMD2BK0_SEL)
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+#define SPI_CMD2BKX_SEL_NONE (SPI_DATA_FLAG | DSI_CMD2BKX_SEL_NONE)
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/* Command2, BK0 bytes */
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#define DSI_CMD2_BK0_GAMCTRL_AJ_MASK GENMASK(7, 6)
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@@ -112,11 +121,23 @@ enum op_bias {
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struct st7701;
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+struct st7701;
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+
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+enum st7701_ctrl_if {
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+ ST7701_CTRL_DSI,
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+ ST7701_CTRL_SPI,
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+};
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+
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struct st7701_panel_desc {
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const struct drm_display_mode *mode;
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unsigned int lanes;
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enum mipi_dsi_pixel_format format;
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+ u32 mediabus_format;
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unsigned int panel_sleep_delay;
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+ void (*init_sequence)(struct st7701 *st7701);
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+ unsigned int conn_type;
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+ enum st7701_ctrl_if interface;
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+ u32 bus_flags;
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/* TFT matrix driver configuration, panel specific. */
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const u8 pv_gamma[16]; /* Positive voltage gamma control */
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@@ -142,6 +163,9 @@ struct st7701_panel_desc {
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struct st7701 {
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struct drm_panel panel;
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struct mipi_dsi_device *dsi;
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+ struct spi_device *spi;
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+ const struct device *dev;
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+
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const struct st7701_panel_desc *desc;
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struct regulator_bulk_data supplies[2];
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@@ -191,7 +215,23 @@ static u8 st7701_vgls_map(struct st7701
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return 0;
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}
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-static void st7701_init_sequence(struct st7701 *st7701)
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+#define ST7701_SPI(st7701, seq...) \
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+ { \
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+ const u16 d[] = { seq }; \
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+ struct spi_transfer xfer = { }; \
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+ struct spi_message spi; \
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+ \
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+ spi_message_init(&spi); \
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+ \
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+ xfer.tx_buf = d; \
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+ xfer.bits_per_word = 9; \
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+ xfer.len = sizeof(u16) * ARRAY_SIZE(d); \
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+ \
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+ spi_message_add_tail(&xfer, &spi); \
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+ spi_sync((st7701)->spi, &spi); \
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+ }
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+
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+static void ts8550b_init_sequence(struct st7701 *st7701)
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{
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const struct st7701_panel_desc *desc = st7701->desc;
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const struct drm_display_mode *mode = desc->mode;
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@@ -404,6 +444,111 @@ static void dmt028vghmcmi_1a_gip_sequenc
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ST7701_DSI(st7701, 0x3A, 0x70);
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}
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+static void txw210001b0_init_sequence(struct st7701 *st7701)
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+{
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+ ST7701_SPI(st7701, MIPI_DCS_SOFT_RESET);
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+
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+ usleep_range(5000, 7000);
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+
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+ ST7701_SPI(st7701, DSI_CMD2BKX_SEL,
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+ 0x177, 0x101, 0x100, 0x100, SPI_CMD2BK0_SEL);
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+
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+ ST7701_SPI(st7701, DSI_CMD2_BK0_LNESET, 0x13B, 0x100);
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+
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+ ST7701_SPI(st7701, DSI_CMD2_BK0_PORCTRL, 0x10B, 0x102);
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+
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+ ST7701_SPI(st7701, DSI_CMD2_BK0_INVSEL, 0x100, 0x102);
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+
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+ ST7701_SPI(st7701, 0xCC, 0x110);
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+
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+ /*
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+ * Gamma option B:
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+ * Positive Voltage Gamma Control
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+ */
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+ ST7701_SPI(st7701, DSI_CMD2_BK0_PVGAMCTRL,
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+ 0x102, 0x113, 0x11B, 0x10D, 0x110, 0x105, 0x108, 0x107,
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+ 0x107, 0x124, 0x104, 0x111, 0x10E, 0x12C, 0x133, 0x11D);
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+
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+ /* Negative Voltage Gamma Control */
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+ ST7701_SPI(st7701, DSI_CMD2_BK0_NVGAMCTRL,
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+ 0x105, 0x113, 0x11B, 0x10D, 0x111, 0x105, 0x108, 0x107,
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+ 0x107, 0x124, 0x104, 0x111, 0x10E, 0x12C, 0x133, 0x11D);
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+
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+ ST7701_SPI(st7701, DSI_CMD2BKX_SEL,
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+ 0x177, 0x101, 0x100, 0x100, SPI_CMD2BK1_SEL);
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+
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+ ST7701_SPI(st7701, DSI_CMD2_BK1_VRHS, 0x15D);
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+
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+ ST7701_SPI(st7701, DSI_CMD2_BK1_VCOM, 0x143);
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+
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+ ST7701_SPI(st7701, DSI_CMD2_BK1_VGHSS, 0x181);
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+
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+ ST7701_SPI(st7701, DSI_CMD2_BK1_TESTCMD, 0x180);
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+
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+ ST7701_SPI(st7701, DSI_CMD2_BK1_VGLS, 0x143);
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+
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+ ST7701_SPI(st7701, DSI_CMD2_BK1_PWCTLR1, 0x185);
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+
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+ ST7701_SPI(st7701, DSI_CMD2_BK1_PWCTLR2, 0x120);
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+
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+ ST7701_SPI(st7701, DSI_CMD2_BK1_SPD1, 0x178);
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+
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+ ST7701_SPI(st7701, DSI_CMD2_BK1_SPD2, 0x178);
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+
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+ ST7701_SPI(st7701, DSI_CMD2_BK1_MIPISET1, 0x188);
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+
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+ ST7701_SPI(st7701, 0xE0, 0x100, 0x100, 0x102);
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+
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+ ST7701_SPI(st7701, 0xE1,
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+ 0x103, 0x1A0, 0x100, 0x100, 0x104, 0x1A0, 0x100, 0x100,
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+ 0x100, 0x120, 0x120);
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+
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+ ST7701_SPI(st7701, 0xE2,
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+ 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100,
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+ 0x100, 0x100, 0x100, 0x100, 0x100);
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+
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+ ST7701_SPI(st7701, 0xE3, 0x100, 0x100, 0x111, 0x100);
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+
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+ ST7701_SPI(st7701, 0xE4, 0x122, 0x100);
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+
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+ ST7701_SPI(st7701, 0xE5,
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+ 0x105, 0x1EC, 0x1A0, 0x1A0, 0x107, 0x1EE, 0x1A0, 0x1A0,
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+ 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100);
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+
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+ ST7701_SPI(st7701, 0xE6, 0x100, 0x100, 0x111, 0x100);
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+
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+ ST7701_SPI(st7701, 0xE7, 0x122, 0x100);
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+
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+ ST7701_SPI(st7701, 0xE8,
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+ 0x106, 0x1ED, 0x1A0, 0x1A0, 0x108, 0x1EF, 0x1A0, 0x1A0,
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+ 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100);
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+
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+ ST7701_SPI(st7701, 0xEB,
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+ 0x100, 0x100, 0x140, 0x140, 0x100, 0x100, 0x100);
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+
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+ ST7701_SPI(st7701, 0xED,
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+ 0x1FF, 0x1FF, 0x1FF, 0x1BA, 0x10A, 0x1BF, 0x145, 0x1FF,
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+ 0x1FF, 0x154, 0x1FB, 0x1A0, 0x1AB, 0x1FF, 0x1FF, 0x1FF);
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+
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+ ST7701_SPI(st7701, 0xEF, 0x110, 0x10D, 0x104, 0x108, 0x13F, 0x11F);
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+
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+ ST7701_SPI(st7701, DSI_CMD2BKX_SEL,
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+ 0x177, 0x101, 0x100, 0x100, SPI_CMD2BK3_SEL);
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+
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+ ST7701_SPI(st7701, 0xEF, 0x108);
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+
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+ ST7701_SPI(st7701, DSI_CMD2BKX_SEL,
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+ 0x177, 0x101, 0x100, 0x100, SPI_CMD2BKX_SEL_NONE);
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+
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+ ST7701_SPI(st7701, 0xCD, 0x108); /* RGB format COLCTRL */
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+
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+ ST7701_SPI(st7701, 0x36, 0x108); /* MadCtl */
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+
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+ ST7701_SPI(st7701, 0x3A, 0x166); /* Colmod */
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+
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+ ST7701_SPI(st7701, MIPI_DCS_EXIT_SLEEP_MODE);
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+}
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+
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static int st7701_prepare(struct drm_panel *panel)
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{
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struct st7701 *st7701 = panel_to_st7701(panel);
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@@ -420,7 +565,7 @@ static int st7701_prepare(struct drm_pan
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gpiod_set_value(st7701->reset, 1);
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msleep(150);
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- st7701_init_sequence(st7701);
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+ st7701->desc->init_sequence(st7701);
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if (st7701->desc->gip_sequence)
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st7701->desc->gip_sequence(st7701);
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@@ -436,7 +581,15 @@ static int st7701_enable(struct drm_pane
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{
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struct st7701 *st7701 = panel_to_st7701(panel);
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- ST7701_DSI(st7701, MIPI_DCS_SET_DISPLAY_ON, 0x00);
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+ switch (st7701->desc->interface) {
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+ case ST7701_CTRL_DSI:
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+ ST7701_DSI(st7701, MIPI_DCS_SET_DISPLAY_ON, 0x00);
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+ break;
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+ case ST7701_CTRL_SPI:
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+ ST7701_SPI(st7701, MIPI_DCS_SET_DISPLAY_ON);
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+ msleep(30);
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+ break;
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+ }
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return 0;
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}
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@@ -445,7 +598,14 @@ static int st7701_disable(struct drm_pan
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{
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struct st7701 *st7701 = panel_to_st7701(panel);
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- ST7701_DSI(st7701, MIPI_DCS_SET_DISPLAY_OFF, 0x00);
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+ switch (st7701->desc->interface) {
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+ case ST7701_CTRL_DSI:
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+ ST7701_DSI(st7701, MIPI_DCS_SET_DISPLAY_OFF, 0x00);
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+ break;
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+ case ST7701_CTRL_SPI:
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+ ST7701_SPI(st7701, MIPI_DCS_SET_DISPLAY_OFF);
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+ break;
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+ }
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return 0;
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}
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@@ -454,7 +614,14 @@ static int st7701_unprepare(struct drm_p
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{
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struct st7701 *st7701 = panel_to_st7701(panel);
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- ST7701_DSI(st7701, MIPI_DCS_ENTER_SLEEP_MODE, 0x00);
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+ switch (st7701->desc->interface) {
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+ case ST7701_CTRL_DSI:
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+ ST7701_DSI(st7701, MIPI_DCS_ENTER_SLEEP_MODE, 0x00);
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+ break;
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+ case ST7701_CTRL_SPI:
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+ ST7701_SPI(st7701, MIPI_DCS_ENTER_SLEEP_MODE);
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+ break;
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+ }
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msleep(st7701->sleep_delay);
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@@ -485,7 +652,7 @@ static int st7701_get_modes(struct drm_p
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mode = drm_mode_duplicate(connector->dev, desc_mode);
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if (!mode) {
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- dev_err(&st7701->dsi->dev, "failed to add mode %ux%u@%u\n",
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+ dev_err(st7701->dev, "failed to add mode %ux%u@%u\n",
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desc_mode->hdisplay, desc_mode->vdisplay,
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drm_mode_vrefresh(desc_mode));
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return -ENOMEM;
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@@ -494,9 +661,18 @@ static int st7701_get_modes(struct drm_p
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drm_mode_set_name(mode);
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drm_mode_probed_add(connector, mode);
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+ if (st7701->desc->mediabus_format)
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+ drm_display_info_set_bus_formats(&connector->display_info,
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+ &st7701->desc->mediabus_format,
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+ 1);
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+ connector->display_info.bus_flags = 0;
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+
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connector->display_info.width_mm = desc_mode->width_mm;
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connector->display_info.height_mm = desc_mode->height_mm;
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+ if (st7701->desc->bus_flags)
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+ connector->display_info.bus_flags = st7701->desc->bus_flags;
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+
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return 1;
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}
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@@ -532,6 +708,9 @@ static const struct st7701_panel_desc ts
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.lanes = 2,
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.format = MIPI_DSI_FMT_RGB888,
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.panel_sleep_delay = 80, /* panel need extra 80ms for sleep out cmd */
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+ .init_sequence = ts8550b_init_sequence,
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+ .conn_type = DRM_MODE_CONNECTOR_DSI,
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+ .interface = ST7701_CTRL_DSI,
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.pv_gamma = {
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CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
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@@ -708,38 +887,74 @@ static const struct st7701_panel_desc dm
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.gip_sequence = dmt028vghmcmi_1a_gip_sequence,
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};
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-static int st7701_dsi_probe(struct mipi_dsi_device *dsi)
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+static const struct drm_display_mode txw210001b0_mode = {
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+ .clock = 19200,
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+
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+ .hdisplay = 480,
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+ .hsync_start = 480 + 10,
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+ .hsync_end = 480 + 10 + 16,
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+ .htotal = 480 + 10 + 16 + 56,
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+
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+ .vdisplay = 480,
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+ .vsync_start = 480 + 15,
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+ .vsync_end = 480 + 15 + 60,
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+ .vtotal = 480 + 15 + 60 + 15,
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+
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+ .width_mm = 53,
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+ .height_mm = 53,
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+ .flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC,
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+
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+ .type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED,
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+};
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+
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+static const struct st7701_panel_desc txw210001b0_desc = {
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+ .mode = &txw210001b0_mode,
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+ .mediabus_format = MEDIA_BUS_FMT_RGB888_1X24,
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+ .init_sequence = txw210001b0_init_sequence,
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+ .conn_type = DRM_MODE_CONNECTOR_DPI,
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+ .interface = ST7701_CTRL_SPI,
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+ .bus_flags = DRM_BUS_FLAG_PIXDATA_DRIVE_NEGEDGE,
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+};
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+
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+static const struct st7701_panel_desc hyperpixel2r_desc = {
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+ .mode = &txw210001b0_mode,
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+ .mediabus_format = MEDIA_BUS_FMT_RGB666_1X24_CPADHI,
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+ .init_sequence = txw210001b0_init_sequence,
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+ .conn_type = DRM_MODE_CONNECTOR_DPI,
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+ .interface = ST7701_CTRL_SPI,
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+ .bus_flags = DRM_BUS_FLAG_PIXDATA_DRIVE_NEGEDGE,
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+};
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+
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+static int st7701_probe(struct device *dev, struct st7701 **ret_st7701)
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{
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const struct st7701_panel_desc *desc;
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struct st7701 *st7701;
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int ret;
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- st7701 = devm_kzalloc(&dsi->dev, sizeof(*st7701), GFP_KERNEL);
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+ st7701 = devm_kzalloc(dev, sizeof(*st7701), GFP_KERNEL);
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if (!st7701)
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return -ENOMEM;
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- desc = of_device_get_match_data(&dsi->dev);
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- dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST |
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- MIPI_DSI_MODE_LPM | MIPI_DSI_CLOCK_NON_CONTINUOUS;
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- dsi->format = desc->format;
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- dsi->lanes = desc->lanes;
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+ desc = of_device_get_match_data(dev);
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+ if (!desc)
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+ return -EINVAL;
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st7701->supplies[0].supply = "VCC";
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st7701->supplies[1].supply = "IOVCC";
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- ret = devm_regulator_bulk_get(&dsi->dev, ARRAY_SIZE(st7701->supplies),
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+ ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(st7701->supplies),
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st7701->supplies);
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if (ret < 0)
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return ret;
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- st7701->reset = devm_gpiod_get(&dsi->dev, "reset", GPIOD_OUT_LOW);
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+ st7701->reset = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_LOW);
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if (IS_ERR(st7701->reset)) {
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- dev_err(&dsi->dev, "Couldn't get our reset GPIO\n");
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+ dev_err(dev, "Couldn't get our reset GPIO\n");
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return PTR_ERR(st7701->reset);
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}
|
|
|
|
- drm_panel_init(&st7701->panel, &dsi->dev, &st7701_funcs,
|
|
- DRM_MODE_CONNECTOR_DSI);
|
|
+ drm_panel_init(&st7701->panel, dev, &st7701_funcs,
|
|
+ desc->conn_type);
|
|
|
|
/**
|
|
* Once sleep out has been issued, ST7701 IC required to wait 120ms
|
|
@@ -758,9 +973,30 @@ static int st7701_dsi_probe(struct mipi_
|
|
|
|
drm_panel_add(&st7701->panel);
|
|
|
|
+ st7701->desc = desc;
|
|
+ st7701->dev = dev;
|
|
+
|
|
+ *ret_st7701 = st7701;
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+static int st7701_dsi_probe(struct mipi_dsi_device *dsi)
|
|
+{
|
|
+ struct st7701 *st7701;
|
|
+ int ret;
|
|
+
|
|
+ ret = st7701_probe(&dsi->dev, &st7701);
|
|
+
|
|
+ if (ret)
|
|
+ return ret;
|
|
+
|
|
+ dsi->mode_flags = MIPI_DSI_MODE_VIDEO;
|
|
+ dsi->format = st7701->desc->format;
|
|
+ dsi->lanes = st7701->desc->lanes;
|
|
+
|
|
mipi_dsi_set_drvdata(dsi, st7701);
|
|
st7701->dsi = dsi;
|
|
- st7701->desc = desc;
|
|
|
|
ret = mipi_dsi_attach(dsi);
|
|
if (ret)
|
|
@@ -781,22 +1017,114 @@ static void st7701_dsi_remove(struct mip
|
|
drm_panel_remove(&st7701->panel);
|
|
}
|
|
|
|
-static const struct of_device_id st7701_of_match[] = {
|
|
+static const struct of_device_id st7701_dsi_of_match[] = {
|
|
{ .compatible = "densitron,dmt028vghmcmi-1a", .data = &dmt028vghmcmi_1a_desc },
|
|
{ .compatible = "techstar,ts8550b", .data = &ts8550b_desc },
|
|
{ }
|
|
};
|
|
-MODULE_DEVICE_TABLE(of, st7701_of_match);
|
|
+MODULE_DEVICE_TABLE(of, st7701_dsi_of_match);
|
|
|
|
static struct mipi_dsi_driver st7701_dsi_driver = {
|
|
.probe = st7701_dsi_probe,
|
|
.remove = st7701_dsi_remove,
|
|
.driver = {
|
|
.name = "st7701",
|
|
- .of_match_table = st7701_of_match,
|
|
+ .of_match_table = st7701_dsi_of_match,
|
|
},
|
|
};
|
|
-module_mipi_dsi_driver(st7701_dsi_driver);
|
|
+
|
|
+/* SPI display probe */
|
|
+static const struct of_device_id st7701_spi_of_match[] = {
|
|
+ { .compatible = "txw,txw210001b0",
|
|
+ .data = &txw210001b0_desc,
|
|
+ }, {
|
|
+ .compatible = "pimoroni,hyperpixel2round",
|
|
+ .data = &hyperpixel2r_desc,
|
|
+ }, {
|
|
+ /* sentinel */
|
|
+ }
|
|
+};
|
|
+MODULE_DEVICE_TABLE(of, st7701_spi_of_match);
|
|
+
|
|
+static int st7701_spi_probe(struct spi_device *spi)
|
|
+{
|
|
+ struct st7701 *st7701;
|
|
+ int ret;
|
|
+
|
|
+ spi->mode = SPI_MODE_3;
|
|
+ spi->bits_per_word = 9;
|
|
+ ret = spi_setup(spi);
|
|
+ if (ret < 0) {
|
|
+ dev_err(&spi->dev, "failed to setup SPI: %d\n", ret);
|
|
+ return ret;
|
|
+ }
|
|
+
|
|
+ ret = st7701_probe(&spi->dev, &st7701);
|
|
+
|
|
+ if (ret)
|
|
+ return ret;
|
|
+
|
|
+ spi_set_drvdata(spi, st7701);
|
|
+ st7701->spi = spi;
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+static void st7701_spi_remove(struct spi_device *spi)
|
|
+{
|
|
+ struct st7701 *ctx = spi_get_drvdata(spi);
|
|
+
|
|
+ drm_panel_remove(&ctx->panel);
|
|
+}
|
|
+
|
|
+static const struct spi_device_id st7701_spi_ids[] = {
|
|
+ { "txw210001b0", 0 },
|
|
+ { "hyperpixel2round", 0 },
|
|
+ { /* sentinel */ }
|
|
+};
|
|
+MODULE_DEVICE_TABLE(spi, st7701_spi_ids);
|
|
+
|
|
+static struct spi_driver st7701_spi_driver = {
|
|
+ .probe = st7701_spi_probe,
|
|
+ .remove = st7701_spi_remove,
|
|
+ .driver = {
|
|
+ .name = "st7701",
|
|
+ .of_match_table = st7701_spi_of_match,
|
|
+ },
|
|
+ .id_table = st7701_spi_ids,
|
|
+};
|
|
+
|
|
+static int __init panel_st7701_init(void)
|
|
+{
|
|
+ int err;
|
|
+
|
|
+ err = spi_register_driver(&st7701_spi_driver);
|
|
+ if (err < 0)
|
|
+ return err;
|
|
+
|
|
+ if (IS_ENABLED(CONFIG_DRM_MIPI_DSI)) {
|
|
+ err = mipi_dsi_driver_register(&st7701_dsi_driver);
|
|
+ if (err < 0)
|
|
+ goto err_did_spi_register;
|
|
+ }
|
|
+
|
|
+ return 0;
|
|
+
|
|
+err_did_spi_register:
|
|
+ spi_unregister_driver(&st7701_spi_driver);
|
|
+
|
|
+ return err;
|
|
+}
|
|
+module_init(panel_st7701_init);
|
|
+
|
|
+static void __exit panel_st7701_exit(void)
|
|
+{
|
|
+ if (IS_ENABLED(CONFIG_DRM_MIPI_DSI))
|
|
+ mipi_dsi_driver_unregister(&st7701_dsi_driver);
|
|
+
|
|
+ spi_unregister_driver(&st7701_spi_driver);
|
|
+}
|
|
+module_exit(panel_st7701_exit);
|
|
|
|
MODULE_AUTHOR("Jagan Teki <jagan@amarulasolutions.com>");
|
|
MODULE_DESCRIPTION("Sitronix ST7701 LCD Panel Driver");
|