From 27837e11a67faf8aa683bde91a7879d01b3c9c14 Mon Sep 17 00:00:00 2001 From: Thomas Petazzoni Date: Wed, 31 Dec 2014 10:11:35 +0100 Subject: [PATCH] staging: fbtft: add flexfb driver This commit adds the flexfb driver from the fbtft project at https://github.com/notro/fbtft. Signed-off-by: Thomas Petazzoni Signed-off-by: Noralf Tronnes Signed-off-by: Greg Kroah-Hartman --- drivers/staging/fbtft/Kconfig | 6 + drivers/staging/fbtft/Makefile | 1 + drivers/staging/fbtft/flexfb.c | 593 +++++++++++++++++++++++++++++++++ 3 files changed, 600 insertions(+) create mode 100644 drivers/staging/fbtft/flexfb.c diff --git a/drivers/staging/fbtft/Kconfig b/drivers/staging/fbtft/Kconfig index 8edec90f93b2..d7ddd6e43221 100644 --- a/drivers/staging/fbtft/Kconfig +++ b/drivers/staging/fbtft/Kconfig @@ -157,3 +157,9 @@ config FB_TFT_WATTEROTT depends on FB_TFT help Generic Framebuffer support for WATTEROTT + +config FB_FLEX + tristate "Generic FB driver for TFT LCD displays" + depends on FB_TFT + help + Generic Framebuffer support for TFT LCD displays. diff --git a/drivers/staging/fbtft/Makefile b/drivers/staging/fbtft/Makefile index 78008c3c0416..5b3254ad4b39 100644 --- a/drivers/staging/fbtft/Makefile +++ b/drivers/staging/fbtft/Makefile @@ -28,3 +28,4 @@ obj-$(CONFIG_FB_TFT_TLS8204) += fb_tls8204.o obj-$(CONFIG_FB_TFT_UC1701) += fb_uc1701.o obj-$(CONFIG_FB_TFT_UPD161704) += fb_upd161704.o obj-$(CONFIG_FB_TFT_WATTEROTT) += fb_watterott.o +obj-$(CONFIG_FB_FLEX) += flexfb.o diff --git a/drivers/staging/fbtft/flexfb.c b/drivers/staging/fbtft/flexfb.c new file mode 100644 index 000000000000..45574a0c6a15 --- /dev/null +++ b/drivers/staging/fbtft/flexfb.c @@ -0,0 +1,593 @@ +/* + * Generic FB driver for TFT LCD displays + * + * Copyright (C) 2013 Noralf Tronnes + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#include +#include +#include +#include +#include +#include +#include + +#include "fbtft.h" + +#define DRVNAME "flexfb" + + +static char *chip = NULL; +module_param(chip, charp, 0); +MODULE_PARM_DESC(chip, "LCD controller"); + +static unsigned int width = 0; +module_param(width, uint, 0); +MODULE_PARM_DESC(width, "Display width"); + +static unsigned int height = 0; +module_param(height, uint, 0); +MODULE_PARM_DESC(height, "Display height"); + +static int init[512]; +static int init_num = 0; +module_param_array(init, int, &init_num, 0); +MODULE_PARM_DESC(init, "Init sequence"); + +static unsigned int setaddrwin = 0; +module_param(setaddrwin, uint, 0); +MODULE_PARM_DESC(setaddrwin, "Which set_addr_win() implementation to use"); + +static unsigned int buswidth = 8; +module_param(buswidth, uint, 0); +MODULE_PARM_DESC(buswidth, "Width of databus (default: 8)"); + +static unsigned int regwidth = 8; +module_param(regwidth, uint, 0); +MODULE_PARM_DESC(regwidth, "Width of controller register (default: 8)"); + +static bool nobacklight = false; +module_param(nobacklight, bool, 0); +MODULE_PARM_DESC(nobacklight, "Turn off backlight functionality."); + +static bool latched = false; +module_param(latched, bool, 0); +MODULE_PARM_DESC(latched, "Use with latched 16-bit databus"); + + +static int *initp = NULL; +static int initp_num = 0; + +/* default init sequences */ +static int st7735r_init[] = { \ +-1,0x01,-2,150,-1,0x11,-2,500,-1,0xB1,0x01,0x2C,0x2D,-1,0xB2,0x01,0x2C,0x2D,-1,0xB3,0x01,0x2C,0x2D,0x01,0x2C,0x2D, \ +-1,0xB4,0x07,-1,0xC0,0xA2,0x02,0x84,-1,0xC1,0xC5,-1,0xC2,0x0A,0x00,-1,0xC3,0x8A,0x2A,-1,0xC4,0x8A,0xEE,-1,0xC5,0x0E, \ +-1,0x20,-1,0x36,0xC0,-1,0x3A,0x05,-1,0xE0,0x0f,0x1a,0x0f,0x18,0x2f,0x28,0x20,0x22,0x1f,0x1b,0x23,0x37,0x00,0x07,0x02,0x10, \ +-1,0xE1,0x0f,0x1b,0x0f,0x17,0x33,0x2c,0x29,0x2e,0x30,0x30,0x39,0x3f,0x00,0x07,0x03,0x10,-1,0x29,-2,100,-1,0x13,-2,10,-3 }; + +static int ssd1289_init[] = { \ +-1,0x00,0x0001,-1,0x03,0xA8A4,-1,0x0C,0x0000,-1,0x0D,0x080C,-1,0x0E,0x2B00,-1,0x1E,0x00B7,-1,0x01,0x2B3F,-1,0x02,0x0600, \ +-1,0x10,0x0000,-1,0x11,0x6070,-1,0x05,0x0000,-1,0x06,0x0000,-1,0x16,0xEF1C,-1,0x17,0x0003,-1,0x07,0x0233,-1,0x0B,0x0000, \ +-1,0x0F,0x0000,-1,0x41,0x0000,-1,0x42,0x0000,-1,0x48,0x0000,-1,0x49,0x013F,-1,0x4A,0x0000,-1,0x4B,0x0000,-1,0x44,0xEF00, \ +-1,0x45,0x0000,-1,0x46,0x013F,-1,0x30,0x0707,-1,0x31,0x0204,-1,0x32,0x0204,-1,0x33,0x0502,-1,0x34,0x0507,-1,0x35,0x0204, \ +-1,0x36,0x0204,-1,0x37,0x0502,-1,0x3A,0x0302,-1,0x3B,0x0302,-1,0x23,0x0000,-1,0x24,0x0000,-1,0x25,0x8000,-1,0x4f,0x0000, \ +-1,0x4e,0x0000,-1,0x22,-3 }; + +static int hx8340bn_init[] = { \ +-1,0xC1,0xFF,0x83,0x40,-1,0x11,-2,150,-1,0xCA,0x70,0x00,0xD9,-1,0xB0,0x01,0x11, \ +-1,0xC9,0x90,0x49,0x10,0x28,0x28,0x10,0x00,0x06,-2,20,-1,0xC2,0x60,0x71,0x01,0x0E,0x05,0x02,0x09,0x31,0x0A, \ +-1,0xC3,0x67,0x30,0x61,0x17,0x48,0x07,0x05,0x33,-2,10,-1,0xB5,0x35,0x20,0x45,-1,0xB4,0x33,0x25,0x4C,-2,10, \ +-1,0x3A,0x05,-1,0x29,-2,10,-3 }; + +static int ili9225_init[] = { \ +-1,0x0001,0x011C,-1,0x0002,0x0100,-1,0x0003,0x1030,-1,0x0008,0x0808,-1,0x000C,0x0000,-1,0x000F,0x0A01,-1,0x0020,0x0000, \ +-1,0x0021,0x0000,-2,50,-1,0x0010,0x0A00,-1,0x0011,0x1038,-2,50,-1,0x0012,0x1121,-1,0x0013,0x004E,-1,0x0014,0x676F, \ +-1,0x0030,0x0000,-1,0x0031,0x00DB,-1,0x0032,0x0000,-1,0x0033,0x0000,-1,0x0034,0x00DB,-1,0x0035,0x0000,-1,0x0036,0x00AF, \ +-1,0x0037,0x0000,-1,0x0038,0x00DB,-1,0x0039,0x0000,-1,0x0050,0x0000,-1,0x0051,0x060A,-1,0x0052,0x0D0A,-1,0x0053,0x0303, \ +-1,0x0054,0x0A0D,-1,0x0055,0x0A06,-1,0x0056,0x0000,-1,0x0057,0x0303,-1,0x0058,0x0000,-1,0x0059,0x0000,-2,50, \ +-1,0x0007,0x1017,-2,50,-3 }; + +static int ili9320_init[] = { \ +-1,0x00E5,0x8000,-1,0x0000,0x0001,-1,0x0001,0x0100,-1,0x0002,0x0700,-1,0x0003,0x1030,-1,0x0004,0x0000,-1,0x0008,0x0202, \ +-1,0x0009,0x0000,-1,0x000A,0x0000,-1,0x000C,0x0000,-1,0x000D,0x0000,-1,0x000F,0x0000,-1,0x0010,0x0000,-1,0x0011,0x0007, \ +-1,0x0012,0x0000,-1,0x0013,0x0000,-2,200,-1,0x0010,0x17B0,-1,0x0011,0x0031,-2,50,-1,0x0012,0x0138,-2,50,-1,0x0013,0x1800, \ +-1,0x0029,0x0008,-2,50,-1,0x0020,0x0000,-1,0x0021,0x0000,-1,0x0030,0x0000,-1,0x0031,0x0505,-1,0x0032,0x0004, \ +-1,0x0035,0x0006,-1,0x0036,0x0707,-1,0x0037,0x0105,-1,0x0038,0x0002,-1,0x0039,0x0707,-1,0x003C,0x0704,-1,0x003D,0x0807, \ +-1,0x0050,0x0000,-1,0x0051,0x00EF,-1,0x0052,0x0000,-1,0x0053,0x013F,-1,0x0060,0x2700,-1,0x0061,0x0001,-1,0x006A,0x0000, \ +-1,0x0080,0x0000,-1,0x0081,0x0000,-1,0x0082,0x0000,-1,0x0083,0x0000,-1,0x0084,0x0000,-1,0x0085,0x0000,-1,0x0090,0x0010, \ +-1,0x0092,0x0000,-1,0x0093,0x0003,-1,0x0095,0x0110,-1,0x0097,0x0000,-1,0x0098,0x0000,-1,0x0007,0x0173,-3 }; + +static int ili9325_init[] = { \ +-1,0x00E3,0x3008,-1,0x00E7,0x0012,-1,0x00EF,0x1231,-1,0x0001,0x0100,-1,0x0002,0x0700,-1,0x0003,0x1030,-1,0x0004,0x0000, \ +-1,0x0008,0x0207,-1,0x0009,0x0000,-1,0x000A,0x0000,-1,0x000C,0x0000,-1,0x000D,0x0000,-1,0x000F,0x0000,-1,0x0010,0x0000, \ +-1,0x0011,0x0007,-1,0x0012,0x0000,-1,0x0013,0x0000,-2,200,-1,0x0010,0x1690,-1,0x0011,0x0223,-2,50,-1,0x0012,0x000D,-2,50, \ +-1,0x0013,0x1200,-1,0x0029,0x000A,-1,0x002B,0x000C,-2,50,-1,0x0020,0x0000,-1,0x0021,0x0000,-1,0x0030,0x0000, \ +-1,0x0031,0x0506,-1,0x0032,0x0104,-1,0x0035,0x0207,-1,0x0036,0x000F,-1,0x0037,0x0306,-1,0x0038,0x0102,-1,0x0039,0x0707, \ +-1,0x003C,0x0702,-1,0x003D,0x1604,-1,0x0050,0x0000,-1,0x0051,0x00EF,-1,0x0052,0x0000,-1,0x0053,0x013F,-1,0x0060,0xA700, \ +-1,0x0061,0x0001,-1,0x006A,0x0000,-1,0x0080,0x0000,-1,0x0081,0x0000,-1,0x0082,0x0000,-1,0x0083,0x0000,-1,0x0084,0x0000, \ +-1,0x0085,0x0000,-1,0x0090,0x0010,-1,0x0092,0x0600,-1,0x0007,0x0133,-3 }; + +static int ili9341_init[] = { \ +-1,0x28,-2,20,-1,0xCF,0x00,0x83,0x30,-1,0xED,0x64,0x03,0x12,0x81,-1,0xE8,0x85,0x01,0x79, \ +-1,0xCB,0x39,0x2c,0x00,0x34,0x02,-1,0xF7,0x20,-1,0xEA,0x00,0x00,-1,0xC0,0x26,-1,0xC1,0x11, \ +-1,0xC5,0x35,0x3E,-1,0xC7,0xBE,-1,0xB1,0x00,0x1B,-1,0xB6,0x0a,0x82,0x27,0x00,-1,0xB7,0x07, \ +-1,0x3A,0x55,-1,0x36,0x48,-1,0x11,-2,120,-1,0x29,-2,20,-3 }; + +static int ssd1351_init[] = { -1,0xfd,0x12,-1,0xfd,0xb1,-1,0xae,-1,0xb3,0xf1,-1,0xca,0x7f,-1,0xa0,0x74, \ + -1,0x15,0x00,0x7f,-1,0x75,0x00,0x7f,-1,0xa1,0x00,-1,0xa2,0x00,-1,0xb5,0x00, \ + -1,0xab,0x01,-1,0xb1,0x32,-1,0xb4,0xa0,0xb5,0x55,-1,0xbb,0x17,-1,0xbe,0x05, \ + -1,0xc1,0xc8,0x80,0xc8,-1,0xc7,0x0f,-1,0xb6,0x01,-1,0xa6,-1,0xaf,-3 }; + + +/* ili9320, ili9325 */ +static void flexfb_set_addr_win_1(struct fbtft_par *par, int xs, int ys, int xe, int ye) +{ + fbtft_par_dbg(DEBUG_SET_ADDR_WIN, par, "%s(xs=%d, ys=%d, xe=%d, ye=%d)\n", __func__, xs, ys, xe, 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) +{ + fbtft_par_dbg(DEBUG_SET_ADDR_WIN, par, "%s(xs=%d, ys=%d, xe=%d, ye=%d)\n", __func__, xs, ys, xe, 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) +{ + fbtft_par_dbg(DEBUG_SET_ADDR_WIN, par, "%s(xs=%d, ys=%d, xe=%d, ye=%d)\n", __func__, xs, ys, xe, 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 < 0) { + 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 < 0) { + dev_err(par->info->device, "Missing info about 'dc' gpio. Aborting.\n"); + return -EINVAL; + } + if (par->gpio.wr < 0) { + dev_err(par->info->device, "Missing info about 'wr' gpio. Aborting.\n"); + return -EINVAL; + } + if (latched && (par->gpio.latch < 0)) { + 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] < 0) { + dev_err(par->info->device, "Missing info about 'db%02d' gpio. Aborting.\n", i); + return -EINVAL; + } + } + + return 0; +} + +static struct fbtft_display flex_display = { }; + +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) { + + if (!strcmp(chip, "st7735r")) { + if (!width) + width = 128; + if (!height) + height = 160; + if (init_num == 0) { + initp = st7735r_init; + initp_num = ARRAY_SIZE(st7735r_init); + } + + + } else if (!strcmp(chip, "hx8340bn")) { + if (!width) + width = 176; + if (!height) + height = 220; + setaddrwin = 0; + if (init_num == 0) { + initp = hx8340bn_init; + initp_num = ARRAY_SIZE(hx8340bn_init); + } + + + } else if (!strcmp(chip, "ili9225")) { + if (!width) + width = 176; + if (!height) + height = 220; + setaddrwin = 0; + regwidth = 16; + if (init_num == 0) { + initp = ili9225_init; + initp_num = ARRAY_SIZE(ili9225_init); + } + + + + } else if (!strcmp(chip, "ili9320")) { + if (!width) + width = 240; + if (!height) + height = 320; + setaddrwin = 1; + regwidth = 16; + if (init_num == 0) { + initp = ili9320_init; + initp_num = ARRAY_SIZE(ili9320_init); + } + + + } else if (!strcmp(chip, "ili9325")) { + if (!width) + width = 240; + if (!height) + height = 320; + setaddrwin = 1; + regwidth = 16; + if (init_num == 0) { + initp = ili9325_init; + initp_num = ARRAY_SIZE(ili9325_init); + } + + } else if (!strcmp(chip, "ili9341")) { + if (!width) + width = 240; + if (!height) + height = 320; + setaddrwin = 0; + regwidth = 8; + if (init_num == 0) { + initp = ili9341_init; + initp_num = ARRAY_SIZE(ili9341_init); + } + + + } else if (!strcmp(chip, "ssd1289")) { + if (!width) + width = 240; + if (!height) + height = 320; + setaddrwin = 2; + regwidth = 16; + if (init_num == 0) { + initp = ssd1289_init; + initp_num = ARRAY_SIZE(ssd1289_init); + } + + + + } else if (!strcmp(chip, "ssd1351")) { + if (!width) + width = 128; + if (!height) + height = 128; + setaddrwin = 3; + if (init_num == 0) { + initp = ssd1351_init; + initp_num = ARRAY_SIZE(ssd1351_init); + } + } else { + dev_err(dev, "chip=%s is not supported\n", chip); + return -EINVAL; + } + } + + 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); + 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; + sdev->bits_per_word=9; + ret = sdev->master->setup(sdev); + if (ret) { + dev_warn(dev, + "9-bit SPI not available, emulating using 8-bit.\n"); + sdev->bits_per_word = 8; + ret = sdev->master->setup(sdev); + if (ret) + goto out_release; + /* 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, + .owner = THIS_MODULE, + }, + .probe = flexfb_probe_spi, + .remove = flexfb_remove_spi, +}; + +static const struct platform_device_id flexfb_platform_ids[] = { + { "flexpfb", 0 }, + { }, +}; + +static struct platform_driver flexfb_platform_driver = { + .driver = { + .name = DRVNAME, + .owner = THIS_MODULE, + }, + .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"); -- 2.20.1