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-----BEGIN PGP SIGNATURE----- iQEzBAABCAAdFiEEchf7rIzpz2NEoWjlaA3BHVMLeiMFAmI8JJYACgkQaA3BHVML eiPkfAgAk4/XfMX5halYTfBI2aZiMgxqu+sCz8hTKGnAbUASLAbmmYFwSZe4B7og gUdUNnSm55x0n89V8AHlN4USA6wAgqRCRkhzY0cCK8roJ9Vcx5ATLt5S+vt1WHmM Q95tAla4/eTYs6Qacr2bAelb4LN+Ed7q4ePTuabpigsSVBaX7gUMOq7eRBAXOdPu 41LNx0L+ZS05fpw+/iqHy24iFJRO76qAJxF4qoVgZKRBnrZi7SNtgOtlimle/T0J JTNNmW05Y4gNBovgYATimf8VujrR0xzvRvmu39N1KLJ5k8M6Jb0D1A4Ym40UgvJa idOmOzyXt18TQAWE5HzgFTeXpvioSA== =A75p -----END PGP SIGNATURE----- Merge tag 'drm-misc-fixes-2022-03-24' of git://anongit.freedesktop.org/drm/drm-misc into drm-fixes * drm/panel/ili9341: Fix optional regulator handling Signed-off-by: Dave Airlie <airlied@redhat.com> From: Thomas Zimmermann <tzimmermann@suse.de> Link: https://patchwork.freedesktop.org/patch/msgid/YjwkvPp6UnePy4Q8@linux-uq9g.fritz.box
794 lines
22 KiB
C
794 lines
22 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Ilitek ILI9341 TFT LCD drm_panel driver.
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*
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* This panel can be configured to support:
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* - 16-bit parallel RGB interface
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* - 18-bit parallel RGB interface
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* - 4-line serial spi interface
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*
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* Copyright (C) 2021 Dillon Min <dillon.minfei@gmail.com>
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*
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* For dbi+dpi part:
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* Derived from drivers/drm/gpu/panel/panel-ilitek-ili9322.c
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* the reuse of DBI abstraction part referred from Linus's patch
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* "drm/panel: s6e63m0: Switch to DBI abstraction for SPI"
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*
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* For only-dbi part, copy from David's code (drm/tiny/ili9341.c)
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* Copyright 2018 David Lechner <david@lechnology.com>
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*/
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#include <linux/bitops.h>
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#include <linux/delay.h>
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#include <linux/gpio/consumer.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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#include <drm/drm_atomic_helper.h>
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#include <drm/drm_drv.h>
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#include <drm/drm_fb_helper.h>
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#include <drm/drm_gem_atomic_helper.h>
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#include <drm/drm_gem_cma_helper.h>
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#include <drm/drm_gem_framebuffer_helper.h>
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#include <drm/drm_mipi_dbi.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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#define ILI9341_RGB_INTERFACE 0xb0 /* RGB Interface Signal Control */
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#define ILI9341_FRC 0xb1 /* Frame Rate Control register */
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#define ILI9341_DFC 0xb6 /* Display Function Control register */
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#define ILI9341_POWER1 0xc0 /* Power Control 1 register */
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#define ILI9341_POWER2 0xc1 /* Power Control 2 register */
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#define ILI9341_VCOM1 0xc5 /* VCOM Control 1 register */
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#define ILI9341_VCOM2 0xc7 /* VCOM Control 2 register */
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#define ILI9341_POWERA 0xcb /* Power control A register */
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#define ILI9341_POWERB 0xcf /* Power control B register */
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#define ILI9341_PGAMMA 0xe0 /* Positive Gamma Correction register */
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#define ILI9341_NGAMMA 0xe1 /* Negative Gamma Correction register */
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#define ILI9341_DTCA 0xe8 /* Driver timing control A */
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#define ILI9341_DTCB 0xea /* Driver timing control B */
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#define ILI9341_POWER_SEQ 0xed /* Power on sequence register */
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#define ILI9341_3GAMMA_EN 0xf2 /* 3 Gamma enable register */
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#define ILI9341_INTERFACE 0xf6 /* Interface control register */
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#define ILI9341_PRC 0xf7 /* Pump ratio control register */
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#define ILI9341_ETMOD 0xb7 /* Entry mode set */
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#define ILI9341_MADCTL_BGR BIT(3)
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#define ILI9341_MADCTL_MV BIT(5)
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#define ILI9341_MADCTL_MX BIT(6)
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#define ILI9341_MADCTL_MY BIT(7)
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#define ILI9341_POWER_B_LEN 3
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#define ILI9341_POWER_SEQ_LEN 4
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#define ILI9341_DTCA_LEN 3
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#define ILI9341_DTCB_LEN 2
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#define ILI9341_POWER_A_LEN 5
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#define ILI9341_DFC_1_LEN 2
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#define ILI9341_FRC_LEN 2
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#define ILI9341_VCOM_1_LEN 2
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#define ILI9341_DFC_2_LEN 4
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#define ILI9341_COLUMN_ADDR_LEN 4
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#define ILI9341_PAGE_ADDR_LEN 4
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#define ILI9341_INTERFACE_LEN 3
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#define ILI9341_PGAMMA_LEN 15
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#define ILI9341_NGAMMA_LEN 15
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#define ILI9341_CA_LEN 3
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#define ILI9341_PIXEL_DPI_16_BITS (BIT(6) | BIT(4))
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#define ILI9341_PIXEL_DPI_18_BITS (BIT(6) | BIT(5))
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#define ILI9341_GAMMA_CURVE_1 BIT(0)
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#define ILI9341_IF_WE_MODE BIT(0)
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#define ILI9341_IF_BIG_ENDIAN 0x00
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#define ILI9341_IF_DM_RGB BIT(2)
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#define ILI9341_IF_DM_INTERNAL 0x00
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#define ILI9341_IF_DM_VSYNC BIT(3)
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#define ILI9341_IF_RM_RGB BIT(1)
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#define ILI9341_IF_RIM_RGB 0x00
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#define ILI9341_COLUMN_ADDR 0x00ef
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#define ILI9341_PAGE_ADDR 0x013f
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#define ILI9341_RGB_EPL BIT(0)
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#define ILI9341_RGB_DPL BIT(1)
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#define ILI9341_RGB_HSPL BIT(2)
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#define ILI9341_RGB_VSPL BIT(3)
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#define ILI9341_RGB_DE_MODE BIT(6)
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#define ILI9341_RGB_DISP_PATH_MEM BIT(7)
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#define ILI9341_DBI_VCOMH_4P6V 0x23
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#define ILI9341_DBI_PWR_2_DEFAULT 0x10
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#define ILI9341_DBI_PRC_NORMAL 0x20
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#define ILI9341_DBI_VCOM_1_VMH_4P25V 0x3e
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#define ILI9341_DBI_VCOM_1_VML_1P5V 0x28
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#define ILI9341_DBI_VCOM_2_DEC_58 0x86
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#define ILI9341_DBI_FRC_DIVA 0x00
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#define ILI9341_DBI_FRC_RTNA 0x1b
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#define ILI9341_DBI_EMS_GAS BIT(0)
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#define ILI9341_DBI_EMS_DTS BIT(1)
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#define ILI9341_DBI_EMS_GON BIT(2)
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/* struct ili9341_config - the system specific ILI9341 configuration */
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struct ili9341_config {
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u32 max_spi_speed;
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/* mode: the drm display mode */
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const struct drm_display_mode mode;
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/* ca: TODO: need comments for this register */
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u8 ca[ILI9341_CA_LEN];
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/* power_b: TODO: need comments for this register */
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u8 power_b[ILI9341_POWER_B_LEN];
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/* power_seq: TODO: need comments for this register */
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u8 power_seq[ILI9341_POWER_SEQ_LEN];
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/* dtca: TODO: need comments for this register */
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u8 dtca[ILI9341_DTCA_LEN];
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/* dtcb: TODO: need comments for this register */
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u8 dtcb[ILI9341_DTCB_LEN];
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/* power_a: TODO: need comments for this register */
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u8 power_a[ILI9341_POWER_A_LEN];
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/* frc: Frame Rate Control (In Normal Mode/Full Colors) (B1h) */
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u8 frc[ILI9341_FRC_LEN];
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/* prc: TODO: need comments for this register */
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u8 prc;
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/* dfc_1: B6h DISCTRL (Display Function Control) */
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u8 dfc_1[ILI9341_DFC_1_LEN];
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/* power_1: Power Control 1 (C0h) */
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u8 power_1;
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/* power_2: Power Control 2 (C1h) */
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u8 power_2;
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/* vcom_1: VCOM Control 1(C5h) */
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u8 vcom_1[ILI9341_VCOM_1_LEN];
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/* vcom_2: VCOM Control 2(C7h) */
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u8 vcom_2;
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/* address_mode: Memory Access Control (36h) */
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u8 address_mode;
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/* g3amma_en: TODO: need comments for this register */
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u8 g3amma_en;
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/* rgb_interface: RGB Interface Signal Control (B0h) */
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u8 rgb_interface;
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/* dfc_2: refer to dfc_1 */
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u8 dfc_2[ILI9341_DFC_2_LEN];
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/* column_addr: Column Address Set (2Ah) */
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u8 column_addr[ILI9341_COLUMN_ADDR_LEN];
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/* page_addr: Page Address Set (2Bh) */
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u8 page_addr[ILI9341_PAGE_ADDR_LEN];
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/* interface: Interface Control (F6h) */
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u8 interface[ILI9341_INTERFACE_LEN];
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/*
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* pixel_format: This command sets the pixel format for the RGB
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* image data used by
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*/
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u8 pixel_format;
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/*
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* gamma_curve: This command is used to select the desired Gamma
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* curve for the
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*/
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u8 gamma_curve;
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/* pgamma: Positive Gamma Correction (E0h) */
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u8 pgamma[ILI9341_PGAMMA_LEN];
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/* ngamma: Negative Gamma Correction (E1h) */
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u8 ngamma[ILI9341_NGAMMA_LEN];
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};
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struct ili9341 {
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struct device *dev;
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const struct ili9341_config *conf;
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struct drm_panel panel;
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struct gpio_desc *reset_gpio;
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struct gpio_desc *dc_gpio;
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struct mipi_dbi *dbi;
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u32 max_spi_speed;
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struct regulator_bulk_data supplies[3];
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};
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/*
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* The Stm32f429-disco board has a panel ili9341 connected to ltdc controller
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*/
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static const struct ili9341_config ili9341_stm32f429_disco_data = {
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.max_spi_speed = 10000000,
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.mode = {
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.clock = 6100,
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.hdisplay = 240,
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.hsync_start = 240 + 10,/* hfp 10 */
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.hsync_end = 240 + 10 + 10,/* hsync 10 */
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.htotal = 240 + 10 + 10 + 20,/* hbp 20 */
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.vdisplay = 320,
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.vsync_start = 320 + 4,/* vfp 4 */
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.vsync_end = 320 + 4 + 2,/* vsync 2 */
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.vtotal = 320 + 4 + 2 + 2,/* vbp 2 */
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.flags = 0,
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.width_mm = 65,
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.height_mm = 50,
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.type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED,
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},
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.ca = {0xc3, 0x08, 0x50},
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.power_b = {0x00, 0xc1, 0x30},
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.power_seq = {0x64, 0x03, 0x12, 0x81},
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.dtca = {0x85, 0x00, 0x78},
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.power_a = {0x39, 0x2c, 0x00, 0x34, 0x02},
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.prc = 0x20,
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.dtcb = {0x00, 0x00},
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/* 0x00 fosc, 0x1b 70hz */
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.frc = {0x00, 0x1b},
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/*
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* 0x0a Interval scan, AGND AGND AGND AGND
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* 0xa2 Normally white, G1 -> G320, S720 -> S1,
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* Scan Cycle 5 frames,85ms
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*/
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.dfc_1 = {0x0a, 0xa2},
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/* 0x10 3.65v */
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.power_1 = 0x10,
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/* 0x10 AVDD=vci*2, VGH=vci*7, VGL=-vci*4 */
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.power_2 = 0x10,
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/* 0x45 VCOMH 4.425v, 0x15 VCOML -1.975*/
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.vcom_1 = {0x45, 0x15},
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/* 0x90 offset voltage, VMH-48, VML-48 */
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.vcom_2 = 0x90,
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/*
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* 0xc8 Row Address Order, Column Address Order
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* BGR 1
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*/
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.address_mode = 0xc8,
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.g3amma_en = 0x00,
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/*
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* 0xc2
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* Display Data Path: Memory
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* RGB: DE mode
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* DOTCLK polarity set (data fetched at the falling time)
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*/
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.rgb_interface = ILI9341_RGB_DISP_PATH_MEM |
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ILI9341_RGB_DE_MODE |
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ILI9341_RGB_DPL,
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/*
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* 0x0a
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* Gate outputs in non-display area: Interval scan
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* Determine source/VCOM output in a non-display area in the partial
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* display mode: AGND AGND AGND AGND
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*
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* 0xa7
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* Scan Cycle: 15 frames
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* fFLM = 60Hz: 255ms
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* Liquid crystal type: Normally white
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* Gate Output Scan Direction: G1 -> G320
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* Source Output Scan Direction: S720 -> S1
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*
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* 0x27
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* LCD Driver Line: 320 lines
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*
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* 0x04
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* PCDIV: 4
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*/
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.dfc_2 = {0x0a, 0xa7, 0x27, 0x04},
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/* column address: 240 */
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.column_addr = {0x00, 0x00, (ILI9341_COLUMN_ADDR >> 4) & 0xff,
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ILI9341_COLUMN_ADDR & 0xff},
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/* page address: 320 */
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.page_addr = {0x00, 0x00, (ILI9341_PAGE_ADDR >> 4) & 0xff,
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ILI9341_PAGE_ADDR & 0xff},
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/*
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* Memory write control: When the transfer number of data exceeds
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* (EC-SC+1)*(EP-SP+1), the column and page number will be
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* reset, and the exceeding data will be written into the following
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* column and page.
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* Display Operation Mode: RGB Interface Mode
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* Interface for RAM Access: RGB interface
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* 16- bit RGB interface (1 transfer/pixel)
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*/
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.interface = {ILI9341_IF_WE_MODE, 0x00,
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ILI9341_IF_DM_RGB | ILI9341_IF_RM_RGB},
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/* DPI: 16 bits / pixel */
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.pixel_format = ILI9341_PIXEL_DPI_16_BITS,
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/* Curve Selected: Gamma curve 1 (G2.2) */
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.gamma_curve = ILI9341_GAMMA_CURVE_1,
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.pgamma = {0x0f, 0x29, 0x24, 0x0c, 0x0e,
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0x09, 0x4e, 0x78, 0x3c, 0x09,
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0x13, 0x05, 0x17, 0x11, 0x00},
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.ngamma = {0x00, 0x16, 0x1b, 0x04, 0x11,
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0x07, 0x31, 0x33, 0x42, 0x05,
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0x0c, 0x0a, 0x28, 0x2f, 0x0f},
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};
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static inline struct ili9341 *panel_to_ili9341(struct drm_panel *panel)
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{
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return container_of(panel, struct ili9341, panel);
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}
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static void ili9341_dpi_init(struct ili9341 *ili)
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{
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struct device *dev = (&ili->panel)->dev;
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struct mipi_dbi *dbi = ili->dbi;
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struct ili9341_config *cfg = (struct ili9341_config *)ili->conf;
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/* Power Control */
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mipi_dbi_command_stackbuf(dbi, 0xca, cfg->ca, ILI9341_CA_LEN);
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mipi_dbi_command_stackbuf(dbi, ILI9341_POWERB, cfg->power_b,
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ILI9341_POWER_B_LEN);
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mipi_dbi_command_stackbuf(dbi, ILI9341_POWER_SEQ, cfg->power_seq,
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ILI9341_POWER_SEQ_LEN);
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mipi_dbi_command_stackbuf(dbi, ILI9341_DTCA, cfg->dtca,
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ILI9341_DTCA_LEN);
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mipi_dbi_command_stackbuf(dbi, ILI9341_POWERA, cfg->power_a,
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ILI9341_POWER_A_LEN);
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mipi_dbi_command(ili->dbi, ILI9341_PRC, cfg->prc);
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mipi_dbi_command_stackbuf(dbi, ILI9341_DTCB, cfg->dtcb,
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ILI9341_DTCB_LEN);
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mipi_dbi_command_stackbuf(dbi, ILI9341_FRC, cfg->frc, ILI9341_FRC_LEN);
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mipi_dbi_command_stackbuf(dbi, ILI9341_DFC, cfg->dfc_1,
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ILI9341_DFC_1_LEN);
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mipi_dbi_command(dbi, ILI9341_POWER1, cfg->power_1);
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mipi_dbi_command(dbi, ILI9341_POWER2, cfg->power_2);
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/* VCOM */
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mipi_dbi_command_stackbuf(dbi, ILI9341_VCOM1, cfg->vcom_1,
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ILI9341_VCOM_1_LEN);
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mipi_dbi_command(dbi, ILI9341_VCOM2, cfg->vcom_2);
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mipi_dbi_command(dbi, MIPI_DCS_SET_ADDRESS_MODE, cfg->address_mode);
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/* Gamma */
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mipi_dbi_command(dbi, ILI9341_3GAMMA_EN, cfg->g3amma_en);
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mipi_dbi_command(dbi, ILI9341_RGB_INTERFACE, cfg->rgb_interface);
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mipi_dbi_command_stackbuf(dbi, ILI9341_DFC, cfg->dfc_2,
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ILI9341_DFC_2_LEN);
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/* Colomn address set */
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mipi_dbi_command_stackbuf(dbi, MIPI_DCS_SET_COLUMN_ADDRESS,
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cfg->column_addr, ILI9341_COLUMN_ADDR_LEN);
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/* Page address set */
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mipi_dbi_command_stackbuf(dbi, MIPI_DCS_SET_PAGE_ADDRESS,
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cfg->page_addr, ILI9341_PAGE_ADDR_LEN);
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mipi_dbi_command_stackbuf(dbi, ILI9341_INTERFACE, cfg->interface,
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ILI9341_INTERFACE_LEN);
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/* Format */
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mipi_dbi_command(dbi, MIPI_DCS_SET_PIXEL_FORMAT, cfg->pixel_format);
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mipi_dbi_command(dbi, MIPI_DCS_WRITE_MEMORY_START);
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msleep(200);
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mipi_dbi_command(dbi, MIPI_DCS_SET_GAMMA_CURVE, cfg->gamma_curve);
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mipi_dbi_command_stackbuf(dbi, ILI9341_PGAMMA, cfg->pgamma,
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ILI9341_PGAMMA_LEN);
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mipi_dbi_command_stackbuf(dbi, ILI9341_NGAMMA, cfg->ngamma,
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ILI9341_NGAMMA_LEN);
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mipi_dbi_command(dbi, MIPI_DCS_EXIT_SLEEP_MODE);
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msleep(200);
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mipi_dbi_command(dbi, MIPI_DCS_SET_DISPLAY_ON);
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mipi_dbi_command(dbi, MIPI_DCS_WRITE_MEMORY_START);
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dev_info(dev, "Initialized display rgb interface\n");
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}
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static int ili9341_dpi_power_on(struct ili9341 *ili)
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{
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struct device *dev = (&ili->panel)->dev;
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int ret = 0;
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/* Assert RESET */
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gpiod_set_value(ili->reset_gpio, 1);
|
|
|
|
/* Enable power */
|
|
ret = regulator_bulk_enable(ARRAY_SIZE(ili->supplies),
|
|
ili->supplies);
|
|
if (ret < 0) {
|
|
dev_err(dev, "unable to enable vcc\n");
|
|
return ret;
|
|
}
|
|
msleep(20);
|
|
|
|
/* De-assert RESET */
|
|
gpiod_set_value(ili->reset_gpio, 0);
|
|
msleep(20);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ili9341_dpi_power_off(struct ili9341 *ili)
|
|
{
|
|
/* Assert RESET */
|
|
gpiod_set_value(ili->reset_gpio, 1);
|
|
|
|
/* Disable power */
|
|
return regulator_bulk_disable(ARRAY_SIZE(ili->supplies),
|
|
ili->supplies);
|
|
}
|
|
|
|
static int ili9341_dpi_disable(struct drm_panel *panel)
|
|
{
|
|
struct ili9341 *ili = panel_to_ili9341(panel);
|
|
|
|
mipi_dbi_command(ili->dbi, MIPI_DCS_SET_DISPLAY_OFF);
|
|
return 0;
|
|
}
|
|
|
|
static int ili9341_dpi_unprepare(struct drm_panel *panel)
|
|
{
|
|
struct ili9341 *ili = panel_to_ili9341(panel);
|
|
|
|
return ili9341_dpi_power_off(ili);
|
|
}
|
|
|
|
static int ili9341_dpi_prepare(struct drm_panel *panel)
|
|
{
|
|
struct ili9341 *ili = panel_to_ili9341(panel);
|
|
int ret;
|
|
|
|
ret = ili9341_dpi_power_on(ili);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ili9341_dpi_init(ili);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int ili9341_dpi_enable(struct drm_panel *panel)
|
|
{
|
|
struct ili9341 *ili = panel_to_ili9341(panel);
|
|
|
|
mipi_dbi_command(ili->dbi, MIPI_DCS_SET_DISPLAY_ON);
|
|
return 0;
|
|
}
|
|
|
|
static int ili9341_dpi_get_modes(struct drm_panel *panel,
|
|
struct drm_connector *connector)
|
|
{
|
|
struct ili9341 *ili = panel_to_ili9341(panel);
|
|
struct drm_device *drm = connector->dev;
|
|
struct drm_display_mode *mode;
|
|
struct drm_display_info *info;
|
|
|
|
info = &connector->display_info;
|
|
info->width_mm = ili->conf->mode.width_mm;
|
|
info->height_mm = ili->conf->mode.height_mm;
|
|
|
|
if (ili->conf->rgb_interface & ILI9341_RGB_DPL)
|
|
info->bus_flags |= DRM_BUS_FLAG_PIXDATA_DRIVE_POSEDGE;
|
|
else
|
|
info->bus_flags |= DRM_BUS_FLAG_PIXDATA_DRIVE_NEGEDGE;
|
|
|
|
if (ili->conf->rgb_interface & ILI9341_RGB_EPL)
|
|
info->bus_flags |= DRM_BUS_FLAG_DE_LOW;
|
|
else
|
|
info->bus_flags |= DRM_BUS_FLAG_DE_HIGH;
|
|
|
|
mode = drm_mode_duplicate(drm, &ili->conf->mode);
|
|
if (!mode) {
|
|
drm_err(drm, "bad mode or failed to add mode\n");
|
|
return -EINVAL;
|
|
}
|
|
drm_mode_set_name(mode);
|
|
|
|
/* Set up the polarity */
|
|
if (ili->conf->rgb_interface & ILI9341_RGB_HSPL)
|
|
mode->flags |= DRM_MODE_FLAG_PHSYNC;
|
|
else
|
|
mode->flags |= DRM_MODE_FLAG_NHSYNC;
|
|
|
|
if (ili->conf->rgb_interface & ILI9341_RGB_VSPL)
|
|
mode->flags |= DRM_MODE_FLAG_PVSYNC;
|
|
else
|
|
mode->flags |= DRM_MODE_FLAG_NVSYNC;
|
|
|
|
drm_mode_probed_add(connector, mode);
|
|
|
|
return 1; /* Number of modes */
|
|
}
|
|
|
|
static const struct drm_panel_funcs ili9341_dpi_funcs = {
|
|
.disable = ili9341_dpi_disable,
|
|
.unprepare = ili9341_dpi_unprepare,
|
|
.prepare = ili9341_dpi_prepare,
|
|
.enable = ili9341_dpi_enable,
|
|
.get_modes = ili9341_dpi_get_modes,
|
|
};
|
|
|
|
static void ili9341_dbi_enable(struct drm_simple_display_pipe *pipe,
|
|
struct drm_crtc_state *crtc_state,
|
|
struct drm_plane_state *plane_state)
|
|
{
|
|
struct mipi_dbi_dev *dbidev = drm_to_mipi_dbi_dev(pipe->crtc.dev);
|
|
struct mipi_dbi *dbi = &dbidev->dbi;
|
|
u8 addr_mode;
|
|
int ret, idx;
|
|
|
|
if (!drm_dev_enter(pipe->crtc.dev, &idx))
|
|
return;
|
|
|
|
ret = mipi_dbi_poweron_conditional_reset(dbidev);
|
|
if (ret < 0)
|
|
goto out_exit;
|
|
if (ret == 1)
|
|
goto out_enable;
|
|
|
|
mipi_dbi_command(dbi, MIPI_DCS_SET_DISPLAY_OFF);
|
|
|
|
mipi_dbi_command(dbi, ILI9341_POWERB, 0x00, 0xc1, 0x30);
|
|
mipi_dbi_command(dbi, ILI9341_POWER_SEQ, 0x64, 0x03, 0x12, 0x81);
|
|
mipi_dbi_command(dbi, ILI9341_DTCA, 0x85, 0x00, 0x78);
|
|
mipi_dbi_command(dbi, ILI9341_POWERA, 0x39, 0x2c, 0x00, 0x34, 0x02);
|
|
mipi_dbi_command(dbi, ILI9341_PRC, ILI9341_DBI_PRC_NORMAL);
|
|
mipi_dbi_command(dbi, ILI9341_DTCB, 0x00, 0x00);
|
|
|
|
/* Power Control */
|
|
mipi_dbi_command(dbi, ILI9341_POWER1, ILI9341_DBI_VCOMH_4P6V);
|
|
mipi_dbi_command(dbi, ILI9341_POWER2, ILI9341_DBI_PWR_2_DEFAULT);
|
|
/* VCOM */
|
|
mipi_dbi_command(dbi, ILI9341_VCOM1, ILI9341_DBI_VCOM_1_VMH_4P25V,
|
|
ILI9341_DBI_VCOM_1_VML_1P5V);
|
|
mipi_dbi_command(dbi, ILI9341_VCOM2, ILI9341_DBI_VCOM_2_DEC_58);
|
|
|
|
/* Memory Access Control */
|
|
mipi_dbi_command(dbi, MIPI_DCS_SET_PIXEL_FORMAT,
|
|
MIPI_DCS_PIXEL_FMT_16BIT);
|
|
|
|
/* Frame Rate */
|
|
mipi_dbi_command(dbi, ILI9341_FRC, ILI9341_DBI_FRC_DIVA & 0x03,
|
|
ILI9341_DBI_FRC_RTNA & 0x1f);
|
|
|
|
/* Gamma */
|
|
mipi_dbi_command(dbi, ILI9341_3GAMMA_EN, 0x00);
|
|
mipi_dbi_command(dbi, MIPI_DCS_SET_GAMMA_CURVE, ILI9341_GAMMA_CURVE_1);
|
|
mipi_dbi_command(dbi, ILI9341_PGAMMA,
|
|
0x0f, 0x31, 0x2b, 0x0c, 0x0e, 0x08, 0x4e, 0xf1,
|
|
0x37, 0x07, 0x10, 0x03, 0x0e, 0x09, 0x00);
|
|
mipi_dbi_command(dbi, ILI9341_NGAMMA,
|
|
0x00, 0x0e, 0x14, 0x03, 0x11, 0x07, 0x31, 0xc1,
|
|
0x48, 0x08, 0x0f, 0x0c, 0x31, 0x36, 0x0f);
|
|
|
|
/* DDRAM */
|
|
mipi_dbi_command(dbi, ILI9341_ETMOD, ILI9341_DBI_EMS_GAS |
|
|
ILI9341_DBI_EMS_DTS |
|
|
ILI9341_DBI_EMS_GON);
|
|
|
|
/* Display */
|
|
mipi_dbi_command(dbi, ILI9341_DFC, 0x08, 0x82, 0x27, 0x00);
|
|
mipi_dbi_command(dbi, MIPI_DCS_EXIT_SLEEP_MODE);
|
|
msleep(100);
|
|
|
|
mipi_dbi_command(dbi, MIPI_DCS_SET_DISPLAY_ON);
|
|
msleep(100);
|
|
|
|
out_enable:
|
|
switch (dbidev->rotation) {
|
|
default:
|
|
addr_mode = ILI9341_MADCTL_MX;
|
|
break;
|
|
case 90:
|
|
addr_mode = ILI9341_MADCTL_MV;
|
|
break;
|
|
case 180:
|
|
addr_mode = ILI9341_MADCTL_MY;
|
|
break;
|
|
case 270:
|
|
addr_mode = ILI9341_MADCTL_MV | ILI9341_MADCTL_MY |
|
|
ILI9341_MADCTL_MX;
|
|
break;
|
|
}
|
|
|
|
addr_mode |= ILI9341_MADCTL_BGR;
|
|
mipi_dbi_command(dbi, MIPI_DCS_SET_ADDRESS_MODE, addr_mode);
|
|
mipi_dbi_enable_flush(dbidev, crtc_state, plane_state);
|
|
drm_info(&dbidev->drm, "Initialized display serial interface\n");
|
|
out_exit:
|
|
drm_dev_exit(idx);
|
|
}
|
|
|
|
static const struct drm_simple_display_pipe_funcs ili9341_dbi_funcs = {
|
|
.enable = ili9341_dbi_enable,
|
|
.disable = mipi_dbi_pipe_disable,
|
|
.update = mipi_dbi_pipe_update,
|
|
.prepare_fb = drm_gem_simple_display_pipe_prepare_fb,
|
|
};
|
|
|
|
static const struct drm_display_mode ili9341_dbi_mode = {
|
|
DRM_SIMPLE_MODE(240, 320, 37, 49),
|
|
};
|
|
|
|
DEFINE_DRM_GEM_CMA_FOPS(ili9341_dbi_fops);
|
|
|
|
static struct drm_driver ili9341_dbi_driver = {
|
|
.driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC,
|
|
.fops = &ili9341_dbi_fops,
|
|
DRM_GEM_CMA_DRIVER_OPS_VMAP,
|
|
.debugfs_init = mipi_dbi_debugfs_init,
|
|
.name = "ili9341",
|
|
.desc = "Ilitek ILI9341",
|
|
.date = "20210716",
|
|
.major = 1,
|
|
.minor = 0,
|
|
};
|
|
|
|
static int ili9341_dbi_probe(struct spi_device *spi, struct gpio_desc *dc,
|
|
struct gpio_desc *reset)
|
|
{
|
|
struct device *dev = &spi->dev;
|
|
struct mipi_dbi_dev *dbidev;
|
|
struct mipi_dbi *dbi;
|
|
struct drm_device *drm;
|
|
struct regulator *vcc;
|
|
u32 rotation = 0;
|
|
int ret;
|
|
|
|
vcc = devm_regulator_get_optional(dev, "vcc");
|
|
if (IS_ERR(vcc)) {
|
|
dev_err(dev, "get optional vcc failed\n");
|
|
vcc = NULL;
|
|
}
|
|
|
|
dbidev = devm_drm_dev_alloc(dev, &ili9341_dbi_driver,
|
|
struct mipi_dbi_dev, drm);
|
|
if (IS_ERR(dbidev))
|
|
return PTR_ERR(dbidev);
|
|
|
|
dbi = &dbidev->dbi;
|
|
drm = &dbidev->drm;
|
|
dbi->reset = reset;
|
|
dbidev->regulator = vcc;
|
|
|
|
drm_mode_config_init(drm);
|
|
|
|
dbidev->backlight = devm_of_find_backlight(dev);
|
|
if (IS_ERR(dbidev->backlight))
|
|
return PTR_ERR(dbidev->backlight);
|
|
|
|
device_property_read_u32(dev, "rotation", &rotation);
|
|
|
|
ret = mipi_dbi_spi_init(spi, dbi, dc);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = mipi_dbi_dev_init(dbidev, &ili9341_dbi_funcs,
|
|
&ili9341_dbi_mode, rotation);
|
|
if (ret)
|
|
return ret;
|
|
|
|
drm_mode_config_reset(drm);
|
|
|
|
ret = drm_dev_register(drm, 0);
|
|
if (ret)
|
|
return ret;
|
|
|
|
spi_set_drvdata(spi, drm);
|
|
|
|
drm_fbdev_generic_setup(drm, 0);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ili9341_dpi_probe(struct spi_device *spi, struct gpio_desc *dc,
|
|
struct gpio_desc *reset)
|
|
{
|
|
struct device *dev = &spi->dev;
|
|
struct ili9341 *ili;
|
|
int ret;
|
|
|
|
ili = devm_kzalloc(dev, sizeof(struct ili9341), GFP_KERNEL);
|
|
if (!ili)
|
|
return -ENOMEM;
|
|
|
|
ili->dbi = devm_kzalloc(dev, sizeof(struct mipi_dbi),
|
|
GFP_KERNEL);
|
|
if (!ili->dbi)
|
|
return -ENOMEM;
|
|
|
|
ili->supplies[0].supply = "vci";
|
|
ili->supplies[1].supply = "vddi";
|
|
ili->supplies[2].supply = "vddi-led";
|
|
ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(ili->supplies),
|
|
ili->supplies);
|
|
if (ret < 0) {
|
|
dev_err(dev, "failed to get regulators: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
ret = mipi_dbi_spi_init(spi, ili->dbi, dc);
|
|
if (ret)
|
|
return ret;
|
|
|
|
spi_set_drvdata(spi, ili);
|
|
ili->reset_gpio = reset;
|
|
/*
|
|
* Every new incarnation of this display must have a unique
|
|
* data entry for the system in this driver.
|
|
*/
|
|
ili->conf = of_device_get_match_data(dev);
|
|
if (!ili->conf) {
|
|
dev_err(dev, "missing device configuration\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
ili->max_spi_speed = ili->conf->max_spi_speed;
|
|
drm_panel_init(&ili->panel, dev, &ili9341_dpi_funcs,
|
|
DRM_MODE_CONNECTOR_DPI);
|
|
drm_panel_add(&ili->panel);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ili9341_probe(struct spi_device *spi)
|
|
{
|
|
struct device *dev = &spi->dev;
|
|
struct gpio_desc *dc;
|
|
struct gpio_desc *reset;
|
|
const struct spi_device_id *id = spi_get_device_id(spi);
|
|
|
|
reset = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_HIGH);
|
|
if (IS_ERR(reset))
|
|
dev_err(dev, "Failed to get gpio 'reset'\n");
|
|
|
|
dc = devm_gpiod_get_optional(dev, "dc", GPIOD_OUT_LOW);
|
|
if (IS_ERR(dc))
|
|
dev_err(dev, "Failed to get gpio 'dc'\n");
|
|
|
|
if (!strcmp(id->name, "sf-tc240t-9370-t"))
|
|
return ili9341_dpi_probe(spi, dc, reset);
|
|
else if (!strcmp(id->name, "yx240qv29"))
|
|
return ili9341_dbi_probe(spi, dc, reset);
|
|
|
|
return -1;
|
|
}
|
|
|
|
static void ili9341_remove(struct spi_device *spi)
|
|
{
|
|
const struct spi_device_id *id = spi_get_device_id(spi);
|
|
struct ili9341 *ili = spi_get_drvdata(spi);
|
|
struct drm_device *drm = spi_get_drvdata(spi);
|
|
|
|
if (!strcmp(id->name, "sf-tc240t-9370-t")) {
|
|
ili9341_dpi_power_off(ili);
|
|
drm_panel_remove(&ili->panel);
|
|
} else if (!strcmp(id->name, "yx240qv29")) {
|
|
drm_dev_unplug(drm);
|
|
drm_atomic_helper_shutdown(drm);
|
|
}
|
|
}
|
|
|
|
static void ili9341_shutdown(struct spi_device *spi)
|
|
{
|
|
const struct spi_device_id *id = spi_get_device_id(spi);
|
|
|
|
if (!strcmp(id->name, "yx240qv29"))
|
|
drm_atomic_helper_shutdown(spi_get_drvdata(spi));
|
|
}
|
|
|
|
static const struct of_device_id ili9341_of_match[] = {
|
|
{
|
|
.compatible = "st,sf-tc240t-9370-t",
|
|
.data = &ili9341_stm32f429_disco_data,
|
|
},
|
|
{
|
|
/* porting from tiny/ili9341.c
|
|
* for original mipi dbi compitable
|
|
*/
|
|
.compatible = "adafruit,yx240qv29",
|
|
.data = NULL,
|
|
},
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(of, ili9341_of_match);
|
|
|
|
static const struct spi_device_id ili9341_id[] = {
|
|
{ "yx240qv29", 0 },
|
|
{ "sf-tc240t-9370-t", 0 },
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(spi, ili9341_id);
|
|
|
|
static struct spi_driver ili9341_driver = {
|
|
.probe = ili9341_probe,
|
|
.remove = ili9341_remove,
|
|
.shutdown = ili9341_shutdown,
|
|
.id_table = ili9341_id,
|
|
.driver = {
|
|
.name = "panel-ilitek-ili9341",
|
|
.of_match_table = ili9341_of_match,
|
|
},
|
|
};
|
|
module_spi_driver(ili9341_driver);
|
|
|
|
MODULE_AUTHOR("Dillon Min <dillon.minfei@gmail.com>");
|
|
MODULE_DESCRIPTION("ILI9341 LCD panel driver");
|
|
MODULE_LICENSE("GPL v2");
|