From dbb588a4f7bf5dd8ad871f5d5dec228295cc4b7e Mon Sep 17 00:00:00 2001 From: Fabio Falzoi Date: Sun, 2 Aug 2015 22:30:14 +0200 Subject: [PATCH] Staging: fbtft: Use a struct to describe each LCD controller MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Use a struct flexfb_lcd_controller to holds chip properties, instead of relying on a long 'if - else if' chain. This allows to: - use a simple linear search to verify if a certain LCD controller model is supported or not. - add support for a new LCD chip controller simply defining a new flexfb_lcd_controller struct. Signed-off-by: Fabio Falzoi Acked-by: Noralf Trønnes Signed-off-by: Greg Kroah-Hartman --- drivers/staging/fbtft/flexfb.c | 232 +++++++++++++++++++-------------- 1 file changed, 136 insertions(+), 96 deletions(-) diff --git a/drivers/staging/fbtft/flexfb.c b/drivers/staging/fbtft/flexfb.c index 5b4c7124a6ee..c763efc5de7d 100644 --- a/drivers/staging/fbtft/flexfb.c +++ b/drivers/staging/fbtft/flexfb.c @@ -126,6 +126,109 @@ static int ssd1351_init[] = { -1, 0xfd, 0x12, -1, 0xfd, 0xb1, -1, 0xae, -1, 0xb3 -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 }; +/** + * struct flexfb_lcd_controller - Describes the LCD controller properties + * @name: Model name of the chip + * @width: Width of display in pixels + * @height: Height of display in pixels + * @setaddrwin: Which set_addr_win() implementation to use + * @regwidth: LCD Controller Register width in bits + * @init_seq: LCD initialization sequence + * @init_seq_sz: Size of LCD initialization sequence + */ +struct flexfb_lcd_controller { + const char *name; + unsigned int width; + unsigned int height; + unsigned int setaddrwin; + unsigned int regwidth; + int *init_seq; + int init_seq_sz; +}; + +static const struct flexfb_lcd_controller flexfb_chip_table[] = { + { + .name = "st7735r", + .width = 120, + .height = 160, + .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 = "ili9225", + .width = 176, + .height = 220, + .regwidth = 16, + .init_seq = ili9225_init, + .init_seq_sz = ARRAY_SIZE(ili9225_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) @@ -247,8 +350,38 @@ static int flexfb_verify_gpios_db(struct fbtft_par *par) 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) { @@ -269,102 +402,9 @@ static int flexfb_probe_common(struct spi_device *sdev, 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; - } + ret = flexfb_chip_init(dev); + if (ret) + return ret; } if (width == 0 || height == 0) { -- 2.30.2