staging/fbtft: Remove flexfb
flexfb was an attempt to write a generic fbtft driver that was abandoned. All the displays it supports are supported by other fbtft drivers. Signed-off-by: Noralf Trønnes <noralf@tronnes.org> Link: https://lore.kernel.org/r/20190917171843.10334-3-noralf@tronnes.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Noralf Trønnes
Greg Kroah-Hartman
parent
2962db71c7
commit
cc29650919
@ -199,9 +199,3 @@ config FB_TFT_WATTEROTT
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depends on FB_TFT
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help
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Generic Framebuffer support for WATTEROTT
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config FB_FLEX
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tristate "Generic FB driver for TFT LCD displays"
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depends on FB_TFT
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help
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Generic Framebuffer support for TFT LCD displays.
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@ -36,4 +36,3 @@ obj-$(CONFIG_FB_TFT_UC1611) += fb_uc1611.o
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obj-$(CONFIG_FB_TFT_UC1701) += fb_uc1701.o
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obj-$(CONFIG_FB_TFT_UPD161704) += fb_upd161704.o
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obj-$(CONFIG_FB_TFT_WATTEROTT) += fb_watterott.o
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obj-$(CONFIG_FB_FLEX) += flexfb.o
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@ -1,851 +0,0 @@
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// SPDX-License-Identifier: GPL-2.0+
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/*
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* Generic FB driver for TFT LCD displays
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*
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* Copyright (C) 2013 Noralf Tronnes
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*/
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/vmalloc.h>
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#include <linux/gpio/consumer.h>
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#include <linux/spi/spi.h>
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#include <linux/delay.h>
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#include "fbtft.h"
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#define DRVNAME "flexfb"
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static char *chip;
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module_param(chip, charp, 0000);
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MODULE_PARM_DESC(chip, "LCD controller");
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static unsigned int width;
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module_param(width, uint, 0000);
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MODULE_PARM_DESC(width, "Display width");
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static unsigned int height;
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module_param(height, uint, 0000);
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MODULE_PARM_DESC(height, "Display height");
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static s16 init[512];
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static int init_num;
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module_param_array(init, short, &init_num, 0000);
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MODULE_PARM_DESC(init, "Init sequence");
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static unsigned int setaddrwin;
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module_param(setaddrwin, uint, 0000);
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MODULE_PARM_DESC(setaddrwin, "Which set_addr_win() implementation to use");
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static unsigned int buswidth = 8;
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module_param(buswidth, uint, 0000);
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MODULE_PARM_DESC(buswidth, "Width of databus (default: 8)");
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static unsigned int regwidth = 8;
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module_param(regwidth, uint, 0000);
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MODULE_PARM_DESC(regwidth, "Width of controller register (default: 8)");
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static bool nobacklight;
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module_param(nobacklight, bool, 0000);
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MODULE_PARM_DESC(nobacklight, "Turn off backlight functionality.");
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static bool latched;
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module_param(latched, bool, 0000);
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MODULE_PARM_DESC(latched, "Use with latched 16-bit databus");
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static const s16 *initp;
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static int initp_num;
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/* default init sequences */
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static const s16 st7735r_init[] = {
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-1, 0x01,
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-2, 150,
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-1, 0x11,
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-2, 500,
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-1, 0xB1, 0x01, 0x2C, 0x2D,
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-1, 0xB2, 0x01, 0x2C, 0x2D,
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-1, 0xB3, 0x01, 0x2C, 0x2D, 0x01, 0x2C, 0x2D,
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-1, 0xB4, 0x07,
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-1, 0xC0, 0xA2, 0x02, 0x84,
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-1, 0xC1, 0xC5,
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-1, 0xC2, 0x0A, 0x00,
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-1, 0xC3, 0x8A, 0x2A,
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-1, 0xC4, 0x8A, 0xEE,
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-1, 0xC5, 0x0E,
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-1, 0x20,
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-1, 0x36, 0xC0,
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-1, 0x3A, 0x05,
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-1, 0xE0, 0x0f, 0x1a, 0x0f, 0x18, 0x2f, 0x28, 0x20, 0x22,
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0x1f, 0x1b, 0x23, 0x37, 0x00, 0x07, 0x02, 0x10,
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-1, 0xE1, 0x0f, 0x1b, 0x0f, 0x17, 0x33, 0x2c, 0x29, 0x2e,
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0x30, 0x30, 0x39, 0x3f, 0x00, 0x07, 0x03, 0x10,
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-1, 0x29,
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-2, 100,
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-1, 0x13,
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-2, 10,
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-3
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};
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static const s16 ssd1289_init[] = {
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-1, 0x00, 0x0001,
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-1, 0x03, 0xA8A4,
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-1, 0x0C, 0x0000,
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-1, 0x0D, 0x080C,
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-1, 0x0E, 0x2B00,
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-1, 0x1E, 0x00B7,
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-1, 0x01, 0x2B3F,
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-1, 0x02, 0x0600,
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-1, 0x10, 0x0000,
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-1, 0x11, 0x6070,
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-1, 0x05, 0x0000,
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-1, 0x06, 0x0000,
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-1, 0x16, 0xEF1C,
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-1, 0x17, 0x0003,
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-1, 0x07, 0x0233,
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-1, 0x0B, 0x0000,
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-1, 0x0F, 0x0000,
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-1, 0x41, 0x0000,
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-1, 0x42, 0x0000,
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-1, 0x48, 0x0000,
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-1, 0x49, 0x013F,
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-1, 0x4A, 0x0000,
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-1, 0x4B, 0x0000,
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-1, 0x44, 0xEF00,
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-1, 0x45, 0x0000,
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-1, 0x46, 0x013F,
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-1, 0x30, 0x0707,
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-1, 0x31, 0x0204,
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-1, 0x32, 0x0204,
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-1, 0x33, 0x0502,
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-1, 0x34, 0x0507,
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-1, 0x35, 0x0204,
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-1, 0x36, 0x0204,
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-1, 0x37, 0x0502,
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-1, 0x3A, 0x0302,
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-1, 0x3B, 0x0302,
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-1, 0x23, 0x0000,
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-1, 0x24, 0x0000,
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-1, 0x25, 0x8000,
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-1, 0x4f, 0x0000,
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-1, 0x4e, 0x0000,
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-1, 0x22,
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-3
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};
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static const s16 hx8340bn_init[] = {
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-1, 0xC1, 0xFF, 0x83, 0x40,
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-1, 0x11,
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-2, 150,
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-1, 0xCA, 0x70, 0x00, 0xD9,
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-1, 0xB0, 0x01, 0x11,
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-1, 0xC9, 0x90, 0x49, 0x10, 0x28, 0x28, 0x10, 0x00, 0x06,
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-2, 20,
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-1, 0xC2, 0x60, 0x71, 0x01, 0x0E, 0x05, 0x02, 0x09, 0x31, 0x0A,
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-1, 0xC3, 0x67, 0x30, 0x61, 0x17, 0x48, 0x07, 0x05, 0x33,
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-2, 10,
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-1, 0xB5, 0x35, 0x20, 0x45,
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-1, 0xB4, 0x33, 0x25, 0x4C,
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-2, 10,
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-1, 0x3A, 0x05,
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-1, 0x29,
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-2, 10,
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-3
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};
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static const s16 ili9225_init[] = {
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-1, 0x0001, 0x011C,
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-1, 0x0002, 0x0100,
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-1, 0x0003, 0x1030,
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-1, 0x0008, 0x0808,
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-1, 0x000C, 0x0000,
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-1, 0x000F, 0x0A01,
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-1, 0x0020, 0x0000,
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-1, 0x0021, 0x0000,
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-2, 50,
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-1, 0x0010, 0x0A00,
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-1, 0x0011, 0x1038,
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-2, 50,
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-1, 0x0012, 0x1121,
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-1, 0x0013, 0x004E,
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-1, 0x0014, 0x676F,
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-1, 0x0030, 0x0000,
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-1, 0x0031, 0x00DB,
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-1, 0x0032, 0x0000,
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-1, 0x0033, 0x0000,
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-1, 0x0034, 0x00DB,
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-1, 0x0035, 0x0000,
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-1, 0x0036, 0x00AF,
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-1, 0x0037, 0x0000,
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-1, 0x0038, 0x00DB,
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-1, 0x0039, 0x0000,
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-1, 0x0050, 0x0000,
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-1, 0x0051, 0x060A,
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-1, 0x0052, 0x0D0A,
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-1, 0x0053, 0x0303,
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-1, 0x0054, 0x0A0D,
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-1, 0x0055, 0x0A06,
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-1, 0x0056, 0x0000,
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-1, 0x0057, 0x0303,
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-1, 0x0058, 0x0000,
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-1, 0x0059, 0x0000,
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-2, 50,
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-1, 0x0007, 0x1017,
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-2, 50,
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-3
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};
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static const s16 ili9320_init[] = {
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-1, 0x00E5, 0x8000,
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-1, 0x0000, 0x0001,
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-1, 0x0001, 0x0100,
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-1, 0x0002, 0x0700,
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-1, 0x0003, 0x1030,
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-1, 0x0004, 0x0000,
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-1, 0x0008, 0x0202,
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-1, 0x0009, 0x0000,
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-1, 0x000A, 0x0000,
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-1, 0x000C, 0x0000,
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-1, 0x000D, 0x0000,
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-1, 0x000F, 0x0000,
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-1, 0x0010, 0x0000,
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-1, 0x0011, 0x0007,
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-1, 0x0012, 0x0000,
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-1, 0x0013, 0x0000,
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-2, 200,
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-1, 0x0010, 0x17B0,
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-1, 0x0011, 0x0031,
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-2, 50,
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-1, 0x0012, 0x0138,
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-2, 50,
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-1, 0x0013, 0x1800,
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-1, 0x0029, 0x0008,
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-2, 50,
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-1, 0x0020, 0x0000,
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-1, 0x0021, 0x0000,
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-1, 0x0030, 0x0000,
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-1, 0x0031, 0x0505,
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-1, 0x0032, 0x0004,
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-1, 0x0035, 0x0006,
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-1, 0x0036, 0x0707,
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-1, 0x0037, 0x0105,
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-1, 0x0038, 0x0002,
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-1, 0x0039, 0x0707,
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-1, 0x003C, 0x0704,
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-1, 0x003D, 0x0807,
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-1, 0x0050, 0x0000,
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-1, 0x0051, 0x00EF,
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-1, 0x0052, 0x0000,
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-1, 0x0053, 0x013F,
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-1, 0x0060, 0x2700,
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-1, 0x0061, 0x0001,
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-1, 0x006A, 0x0000,
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-1, 0x0080, 0x0000,
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-1, 0x0081, 0x0000,
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-1, 0x0082, 0x0000,
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-1, 0x0083, 0x0000,
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-1, 0x0084, 0x0000,
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-1, 0x0085, 0x0000,
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-1, 0x0090, 0x0010,
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-1, 0x0092, 0x0000,
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-1, 0x0093, 0x0003,
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-1, 0x0095, 0x0110,
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-1, 0x0097, 0x0000,
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-1, 0x0098, 0x0000,
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-1, 0x0007, 0x0173,
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-3
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};
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static const s16 ili9325_init[] = {
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-1, 0x00E3, 0x3008,
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-1, 0x00E7, 0x0012,
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-1, 0x00EF, 0x1231,
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-1, 0x0001, 0x0100,
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-1, 0x0002, 0x0700,
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-1, 0x0003, 0x1030,
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-1, 0x0004, 0x0000,
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-1, 0x0008, 0x0207,
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-1, 0x0009, 0x0000,
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-1, 0x000A, 0x0000,
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-1, 0x000C, 0x0000,
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-1, 0x000D, 0x0000,
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-1, 0x000F, 0x0000,
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-1, 0x0010, 0x0000,
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-1, 0x0011, 0x0007,
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-1, 0x0012, 0x0000,
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-1, 0x0013, 0x0000,
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-2, 200,
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-1, 0x0010, 0x1690,
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-1, 0x0011, 0x0223,
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-2, 50,
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-1, 0x0012, 0x000D,
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-2, 50,
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-1, 0x0013, 0x1200,
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-1, 0x0029, 0x000A,
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-1, 0x002B, 0x000C,
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-2, 50,
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-1, 0x0020, 0x0000,
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-1, 0x0021, 0x0000,
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-1, 0x0030, 0x0000,
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-1, 0x0031, 0x0506,
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-1, 0x0032, 0x0104,
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-1, 0x0035, 0x0207,
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-1, 0x0036, 0x000F,
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-1, 0x0037, 0x0306,
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-1, 0x0038, 0x0102,
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-1, 0x0039, 0x0707,
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-1, 0x003C, 0x0702,
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-1, 0x003D, 0x1604,
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-1, 0x0050, 0x0000,
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-1, 0x0051, 0x00EF,
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-1, 0x0052, 0x0000,
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-1, 0x0053, 0x013F,
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-1, 0x0060, 0xA700,
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-1, 0x0061, 0x0001,
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-1, 0x006A, 0x0000,
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-1, 0x0080, 0x0000,
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-1, 0x0081, 0x0000,
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-1, 0x0082, 0x0000,
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-1, 0x0083, 0x0000,
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-1, 0x0084, 0x0000,
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-1, 0x0085, 0x0000,
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-1, 0x0090, 0x0010,
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-1, 0x0092, 0x0600,
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-1, 0x0007, 0x0133,
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-3
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};
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static const s16 ili9341_init[] = {
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-1, 0x28,
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-2, 20,
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-1, 0xCF, 0x00, 0x83, 0x30,
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-1, 0xED, 0x64, 0x03, 0x12, 0x81,
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-1, 0xE8, 0x85, 0x01, 0x79,
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-1, 0xCB, 0x39, 0x2c, 0x00, 0x34, 0x02,
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-1, 0xF7, 0x20,
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-1, 0xEA, 0x00, 0x00,
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-1, 0xC0, 0x26,
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-1, 0xC1, 0x11,
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-1, 0xC5, 0x35, 0x3E,
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-1, 0xC7, 0xBE,
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-1, 0xB1, 0x00, 0x1B,
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-1, 0xB6, 0x0a, 0x82, 0x27, 0x00,
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-1, 0xB7, 0x07,
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-1, 0x3A, 0x55,
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-1, 0x36, 0x48,
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-1, 0x11,
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-2, 120,
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-1, 0x29,
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-2, 20,
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-3
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};
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static const s16 ssd1351_init[] = {
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-1, 0xfd, 0x12,
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-1, 0xfd, 0xb1,
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-1, 0xae,
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-1, 0xb3, 0xf1,
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-1, 0xca, 0x7f,
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-1, 0xa0, 0x74,
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-1, 0x15, 0x00, 0x7f,
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-1, 0x75, 0x00, 0x7f,
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-1, 0xa1, 0x00,
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-1, 0xa2, 0x00,
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-1, 0xb5, 0x00,
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-1, 0xab, 0x01,
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-1, 0xb1, 0x32,
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-1, 0xb4, 0xa0, 0xb5, 0x55,
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-1, 0xbb, 0x17,
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-1, 0xbe, 0x05,
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-1, 0xc1, 0xc8, 0x80, 0xc8,
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-1, 0xc7, 0x0f,
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-1, 0xb6, 0x01,
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-1, 0xa6,
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-1, 0xaf,
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-3
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};
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/**
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* struct flexfb_lcd_controller - Describes the LCD controller properties
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* @name: Model name of the chip
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* @width: Width of display in pixels
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* @height: Height of display in pixels
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* @setaddrwin: Which set_addr_win() implementation to use
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* @regwidth: LCD Controller Register width in bits
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* @init_seq: LCD initialization sequence
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* @init_seq_sz: Size of LCD initialization sequence
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*/
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struct flexfb_lcd_controller {
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const char *name;
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unsigned int width;
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unsigned int height;
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unsigned int setaddrwin;
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unsigned int regwidth;
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const s16 *init_seq;
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int init_seq_sz;
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};
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static const struct flexfb_lcd_controller flexfb_chip_table[] = {
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{
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.name = "st7735r",
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.width = 120,
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.height = 160,
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.init_seq = st7735r_init,
|
||||
.init_seq_sz = ARRAY_SIZE(st7735r_init),
|
||||
},
|
||||
{
|
||||
.name = "hx8340bn",
|
||||
.width = 176,
|
||||
.height = 220,
|
||||
.init_seq = hx8340bn_init,
|
||||
.init_seq_sz = ARRAY_SIZE(hx8340bn_init),
|
||||
},
|
||||
{
|
||||
.name = "ili9225",
|
||||
.width = 176,
|
||||
.height = 220,
|
||||
.regwidth = 16,
|
||||
.init_seq = ili9225_init,
|
||||
.init_seq_sz = ARRAY_SIZE(ili9225_init),
|
||||
},
|
||||
{
|
||||
.name = "ili9320",
|
||||
.width = 240,
|
||||
.height = 320,
|
||||
.setaddrwin = 1,
|
||||
.regwidth = 16,
|
||||
.init_seq = ili9320_init,
|
||||
.init_seq_sz = ARRAY_SIZE(ili9320_init),
|
||||
},
|
||||
{
|
||||
.name = "ili9325",
|
||||
.width = 240,
|
||||
.height = 320,
|
||||
.setaddrwin = 1,
|
||||
.regwidth = 16,
|
||||
.init_seq = ili9325_init,
|
||||
.init_seq_sz = ARRAY_SIZE(ili9325_init),
|
||||
},
|
||||
{
|
||||
.name = "ili9341",
|
||||
.width = 240,
|
||||
.height = 320,
|
||||
.init_seq = ili9341_init,
|
||||
.init_seq_sz = ARRAY_SIZE(ili9341_init),
|
||||
},
|
||||
{
|
||||
.name = "ssd1289",
|
||||
.width = 240,
|
||||
.height = 320,
|
||||
.setaddrwin = 2,
|
||||
.regwidth = 16,
|
||||
.init_seq = ssd1289_init,
|
||||
.init_seq_sz = ARRAY_SIZE(ssd1289_init),
|
||||
},
|
||||
{
|
||||
.name = "ssd1351",
|
||||
.width = 128,
|
||||
.height = 128,
|
||||
.setaddrwin = 3,
|
||||
.init_seq = ssd1351_init,
|
||||
.init_seq_sz = ARRAY_SIZE(ssd1351_init),
|
||||
},
|
||||
};
|
||||
|
||||
/* ili9320, ili9325 */
|
||||
static void flexfb_set_addr_win_1(struct fbtft_par *par,
|
||||
int xs, int ys, int xe, int ye)
|
||||
{
|
||||
switch (par->info->var.rotate) {
|
||||
/* R20h = Horizontal GRAM Start Address */
|
||||
/* R21h = Vertical GRAM Start Address */
|
||||
case 0:
|
||||
write_reg(par, 0x0020, xs);
|
||||
write_reg(par, 0x0021, ys);
|
||||
break;
|
||||
case 180:
|
||||
write_reg(par, 0x0020, width - 1 - xs);
|
||||
write_reg(par, 0x0021, height - 1 - ys);
|
||||
break;
|
||||
case 270:
|
||||
write_reg(par, 0x0020, width - 1 - ys);
|
||||
write_reg(par, 0x0021, xs);
|
||||
break;
|
||||
case 90:
|
||||
write_reg(par, 0x0020, ys);
|
||||
write_reg(par, 0x0021, height - 1 - xs);
|
||||
break;
|
||||
}
|
||||
write_reg(par, 0x0022); /* Write Data to GRAM */
|
||||
}
|
||||
|
||||
/* ssd1289 */
|
||||
static void flexfb_set_addr_win_2(struct fbtft_par *par,
|
||||
int xs, int ys, int xe, int ye)
|
||||
{
|
||||
switch (par->info->var.rotate) {
|
||||
/* R4Eh - Set GDDRAM X address counter */
|
||||
/* R4Fh - Set GDDRAM Y address counter */
|
||||
case 0:
|
||||
write_reg(par, 0x4e, xs);
|
||||
write_reg(par, 0x4f, ys);
|
||||
break;
|
||||
case 180:
|
||||
write_reg(par, 0x4e, par->info->var.xres - 1 - xs);
|
||||
write_reg(par, 0x4f, par->info->var.yres - 1 - ys);
|
||||
break;
|
||||
case 270:
|
||||
write_reg(par, 0x4e, par->info->var.yres - 1 - ys);
|
||||
write_reg(par, 0x4f, xs);
|
||||
break;
|
||||
case 90:
|
||||
write_reg(par, 0x4e, ys);
|
||||
write_reg(par, 0x4f, par->info->var.xres - 1 - xs);
|
||||
break;
|
||||
}
|
||||
|
||||
/* R22h - RAM data write */
|
||||
write_reg(par, 0x22, 0);
|
||||
}
|
||||
|
||||
/* ssd1351 */
|
||||
static void set_addr_win_3(struct fbtft_par *par,
|
||||
int xs, int ys, int xe, int ye)
|
||||
{
|
||||
write_reg(par, 0x15, xs, xe);
|
||||
write_reg(par, 0x75, ys, ye);
|
||||
write_reg(par, 0x5C);
|
||||
}
|
||||
|
||||
static int flexfb_verify_gpios_dc(struct fbtft_par *par)
|
||||
{
|
||||
fbtft_par_dbg(DEBUG_VERIFY_GPIOS, par, "%s()\n", __func__);
|
||||
|
||||
if (!par->gpio.dc) {
|
||||
dev_err(par->info->device,
|
||||
"Missing info about 'dc' gpio. Aborting.\n");
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int flexfb_verify_gpios_db(struct fbtft_par *par)
|
||||
{
|
||||
int i;
|
||||
int num_db = buswidth;
|
||||
|
||||
fbtft_par_dbg(DEBUG_VERIFY_GPIOS, par, "%s()\n", __func__);
|
||||
|
||||
if (!par->gpio.dc) {
|
||||
dev_err(par->info->device, "Missing info about 'dc' gpio. Aborting.\n");
|
||||
return -EINVAL;
|
||||
}
|
||||
if (!par->gpio.wr) {
|
||||
dev_err(par->info->device, "Missing info about 'wr' gpio. Aborting.\n");
|
||||
return -EINVAL;
|
||||
}
|
||||
if (latched && !par->gpio.latch) {
|
||||
dev_err(par->info->device, "Missing info about 'latch' gpio. Aborting.\n");
|
||||
return -EINVAL;
|
||||
}
|
||||
if (latched)
|
||||
num_db = buswidth / 2;
|
||||
for (i = 0; i < num_db; i++) {
|
||||
if (!par->gpio.db[i]) {
|
||||
dev_err(par->info->device,
|
||||
"Missing info about 'db%02d' gpio. Aborting.\n",
|
||||
i);
|
||||
return -EINVAL;
|
||||
}
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void flexfb_chip_load_param(const struct flexfb_lcd_controller *chip)
|
||||
{
|
||||
if (!width)
|
||||
width = chip->width;
|
||||
if (!height)
|
||||
height = chip->height;
|
||||
setaddrwin = chip->setaddrwin;
|
||||
if (chip->regwidth)
|
||||
regwidth = chip->regwidth;
|
||||
if (!init_num) {
|
||||
initp = chip->init_seq;
|
||||
initp_num = chip->init_seq_sz;
|
||||
}
|
||||
}
|
||||
|
||||
static struct fbtft_display flex_display = { };
|
||||
|
||||
static int flexfb_chip_init(const struct device *dev)
|
||||
{
|
||||
int i;
|
||||
|
||||
for (i = 0; i < ARRAY_SIZE(flexfb_chip_table); i++)
|
||||
if (!strcmp(chip, flexfb_chip_table[i].name)) {
|
||||
flexfb_chip_load_param(&flexfb_chip_table[i]);
|
||||
return 0;
|
||||
}
|
||||
|
||||
dev_err(dev, "chip=%s is not supported\n", chip);
|
||||
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
static int flexfb_probe_common(struct spi_device *sdev,
|
||||
struct platform_device *pdev)
|
||||
{
|
||||
struct device *dev;
|
||||
struct fb_info *info;
|
||||
struct fbtft_par *par;
|
||||
int ret;
|
||||
|
||||
initp = init;
|
||||
initp_num = init_num;
|
||||
|
||||
if (sdev)
|
||||
dev = &sdev->dev;
|
||||
else
|
||||
dev = &pdev->dev;
|
||||
|
||||
fbtft_init_dbg(dev, "%s(%s)\n", __func__,
|
||||
sdev ? "'SPI device'" : "'Platform device'");
|
||||
|
||||
if (chip) {
|
||||
ret = flexfb_chip_init(dev);
|
||||
if (ret)
|
||||
return ret;
|
||||
}
|
||||
|
||||
if (width == 0 || height == 0) {
|
||||
dev_err(dev, "argument(s) missing: width and height has to be set.\n");
|
||||
return -EINVAL;
|
||||
}
|
||||
flex_display.width = width;
|
||||
flex_display.height = height;
|
||||
fbtft_init_dbg(dev, "Display resolution: %dx%d\n", width, height);
|
||||
fbtft_init_dbg(dev, "chip = %s\n", chip ? chip : "not set");
|
||||
fbtft_init_dbg(dev, "setaddrwin = %d\n", setaddrwin);
|
||||
fbtft_init_dbg(dev, "regwidth = %d\n", regwidth);
|
||||
fbtft_init_dbg(dev, "buswidth = %d\n", buswidth);
|
||||
|
||||
info = fbtft_framebuffer_alloc(&flex_display, dev, dev->platform_data);
|
||||
if (!info)
|
||||
return -ENOMEM;
|
||||
|
||||
par = info->par;
|
||||
if (sdev)
|
||||
par->spi = sdev;
|
||||
else
|
||||
par->pdev = pdev;
|
||||
if (!par->init_sequence)
|
||||
par->init_sequence = initp;
|
||||
par->fbtftops.init_display = fbtft_init_display;
|
||||
|
||||
/* registerwrite functions */
|
||||
switch (regwidth) {
|
||||
case 8:
|
||||
par->fbtftops.write_register = fbtft_write_reg8_bus8;
|
||||
break;
|
||||
case 16:
|
||||
par->fbtftops.write_register = fbtft_write_reg16_bus8;
|
||||
break;
|
||||
default:
|
||||
dev_err(dev,
|
||||
"argument 'regwidth': %d is not supported.\n",
|
||||
regwidth);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
/* bus functions */
|
||||
if (sdev) {
|
||||
par->fbtftops.write = fbtft_write_spi;
|
||||
switch (buswidth) {
|
||||
case 8:
|
||||
par->fbtftops.write_vmem = fbtft_write_vmem16_bus8;
|
||||
if (!par->startbyte)
|
||||
par->fbtftops.verify_gpios = flexfb_verify_gpios_dc;
|
||||
break;
|
||||
case 9:
|
||||
if (regwidth == 16) {
|
||||
dev_err(dev, "argument 'regwidth': %d is not supported with buswidth=%d and SPI.\n",
|
||||
regwidth, buswidth);
|
||||
return -EINVAL;
|
||||
}
|
||||
par->fbtftops.write_register = fbtft_write_reg8_bus9;
|
||||
par->fbtftops.write_vmem = fbtft_write_vmem16_bus9;
|
||||
if (par->spi->master->bits_per_word_mask
|
||||
& SPI_BPW_MASK(9)) {
|
||||
par->spi->bits_per_word = 9;
|
||||
break;
|
||||
}
|
||||
|
||||
dev_warn(dev,
|
||||
"9-bit SPI not available, emulating using 8-bit.\n");
|
||||
/* allocate buffer with room for dc bits */
|
||||
par->extra = devm_kzalloc(par->info->device,
|
||||
par->txbuf.len
|
||||
+ (par->txbuf.len / 8) + 8,
|
||||
GFP_KERNEL);
|
||||
if (!par->extra) {
|
||||
ret = -ENOMEM;
|
||||
goto out_release;
|
||||
}
|
||||
par->fbtftops.write = fbtft_write_spi_emulate_9;
|
||||
|
||||
break;
|
||||
default:
|
||||
dev_err(dev,
|
||||
"argument 'buswidth': %d is not supported with SPI.\n",
|
||||
buswidth);
|
||||
return -EINVAL;
|
||||
}
|
||||
} else {
|
||||
par->fbtftops.verify_gpios = flexfb_verify_gpios_db;
|
||||
switch (buswidth) {
|
||||
case 8:
|
||||
par->fbtftops.write = fbtft_write_gpio8_wr;
|
||||
par->fbtftops.write_vmem = fbtft_write_vmem16_bus8;
|
||||
break;
|
||||
case 16:
|
||||
par->fbtftops.write_register = fbtft_write_reg16_bus16;
|
||||
if (latched)
|
||||
par->fbtftops.write = fbtft_write_gpio16_wr_latched;
|
||||
else
|
||||
par->fbtftops.write = fbtft_write_gpio16_wr;
|
||||
par->fbtftops.write_vmem = fbtft_write_vmem16_bus16;
|
||||
break;
|
||||
default:
|
||||
dev_err(dev,
|
||||
"argument 'buswidth': %d is not supported with parallel.\n",
|
||||
buswidth);
|
||||
return -EINVAL;
|
||||
}
|
||||
}
|
||||
|
||||
/* set_addr_win function */
|
||||
switch (setaddrwin) {
|
||||
case 0:
|
||||
/* use default */
|
||||
break;
|
||||
case 1:
|
||||
par->fbtftops.set_addr_win = flexfb_set_addr_win_1;
|
||||
break;
|
||||
case 2:
|
||||
par->fbtftops.set_addr_win = flexfb_set_addr_win_2;
|
||||
break;
|
||||
case 3:
|
||||
par->fbtftops.set_addr_win = set_addr_win_3;
|
||||
break;
|
||||
default:
|
||||
dev_err(dev, "argument 'setaddrwin': unknown value %d.\n",
|
||||
setaddrwin);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
if (!nobacklight)
|
||||
par->fbtftops.register_backlight = fbtft_register_backlight;
|
||||
|
||||
ret = fbtft_register_framebuffer(info);
|
||||
if (ret < 0)
|
||||
goto out_release;
|
||||
|
||||
return 0;
|
||||
|
||||
out_release:
|
||||
fbtft_framebuffer_release(info);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int flexfb_remove_common(struct device *dev, struct fb_info *info)
|
||||
{
|
||||
struct fbtft_par *par;
|
||||
|
||||
if (!info)
|
||||
return -EINVAL;
|
||||
par = info->par;
|
||||
if (par)
|
||||
fbtft_par_dbg(DEBUG_DRIVER_INIT_FUNCTIONS, par, "%s()\n",
|
||||
__func__);
|
||||
fbtft_unregister_framebuffer(info);
|
||||
fbtft_framebuffer_release(info);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int flexfb_probe_spi(struct spi_device *spi)
|
||||
{
|
||||
return flexfb_probe_common(spi, NULL);
|
||||
}
|
||||
|
||||
static int flexfb_remove_spi(struct spi_device *spi)
|
||||
{
|
||||
struct fb_info *info = spi_get_drvdata(spi);
|
||||
|
||||
return flexfb_remove_common(&spi->dev, info);
|
||||
}
|
||||
|
||||
static int flexfb_probe_pdev(struct platform_device *pdev)
|
||||
{
|
||||
return flexfb_probe_common(NULL, pdev);
|
||||
}
|
||||
|
||||
static int flexfb_remove_pdev(struct platform_device *pdev)
|
||||
{
|
||||
struct fb_info *info = platform_get_drvdata(pdev);
|
||||
|
||||
return flexfb_remove_common(&pdev->dev, info);
|
||||
}
|
||||
|
||||
static struct spi_driver flexfb_spi_driver = {
|
||||
.driver = {
|
||||
.name = DRVNAME,
|
||||
},
|
||||
.probe = flexfb_probe_spi,
|
||||
.remove = flexfb_remove_spi,
|
||||
};
|
||||
|
||||
static const struct platform_device_id flexfb_platform_ids[] = {
|
||||
{ "flexpfb", 0 },
|
||||
{ },
|
||||
};
|
||||
MODULE_DEVICE_TABLE(platform, flexfb_platform_ids);
|
||||
|
||||
static struct platform_driver flexfb_platform_driver = {
|
||||
.driver = {
|
||||
.name = DRVNAME,
|
||||
},
|
||||
.id_table = flexfb_platform_ids,
|
||||
.probe = flexfb_probe_pdev,
|
||||
.remove = flexfb_remove_pdev,
|
||||
};
|
||||
|
||||
static int __init flexfb_init(void)
|
||||
{
|
||||
int ret, ret2;
|
||||
|
||||
ret = spi_register_driver(&flexfb_spi_driver);
|
||||
ret2 = platform_driver_register(&flexfb_platform_driver);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
return ret2;
|
||||
}
|
||||
|
||||
static void __exit flexfb_exit(void)
|
||||
{
|
||||
spi_unregister_driver(&flexfb_spi_driver);
|
||||
platform_driver_unregister(&flexfb_platform_driver);
|
||||
}
|
||||
|
||||
/* ------------------------------------------------------------------------- */
|
||||
|
||||
module_init(flexfb_init);
|
||||
module_exit(flexfb_exit);
|
||||
|
||||
MODULE_DESCRIPTION("Generic FB driver for TFT LCD displays");
|
||||
MODULE_AUTHOR("Noralf Tronnes");
|
||||
MODULE_LICENSE("GPL");
|
||||
Loading…
Reference in New Issue
Block a user