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path: root/drivers/staging/fbtft/flexfb.c
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Diffstat (limited to 'drivers/staging/fbtft/flexfb.c')
-rw-r--r--drivers/staging/fbtft/flexfb.c269
1 files changed, 145 insertions, 124 deletions
diff --git a/drivers/staging/fbtft/flexfb.c b/drivers/staging/fbtft/flexfb.c
index 2c4ce07f5106..3f380a0086c3 100644
--- a/drivers/staging/fbtft/flexfb.c
+++ b/drivers/staging/fbtft/flexfb.c
@@ -12,10 +12,6 @@
* 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 <linux/module.h>
@@ -30,7 +26,6 @@
#define DRVNAME "flexfb"
-
static char *chip;
module_param(chip, charp, 0);
MODULE_PARM_DESC(chip, "LCD controller");
@@ -68,7 +63,6 @@ static bool latched;
module_param(latched, bool, 0);
MODULE_PARM_DESC(latched, "Use with latched 16-bit databus");
-
static int *initp;
static int initp_num;
@@ -132,14 +126,115 @@ 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)
{
- fbtft_par_dbg(DEBUG_SET_ADDR_WIN, par,
- "%s(xs=%d, ys=%d, xe=%d, ye=%d)\n",
- __func__, xs, ys, xe, 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 */
@@ -242,7 +337,7 @@ static int flexfb_verify_gpios_db(struct fbtft_par *par)
return -EINVAL;
}
if (latched)
- num_db = buswidth/2;
+ num_db = buswidth / 2;
for (i = 0; i < num_db; i++) {
if (par->gpio.db[i] < 0) {
dev_err(par->info->device,
@@ -255,8 +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)
{
@@ -277,110 +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) {
@@ -395,7 +419,7 @@ static int flexfb_probe_common(struct spi_device *sdev,
fbtft_init_dbg(dev, "regwidth = %d\n", regwidth);
fbtft_init_dbg(dev, "buswidth = %d\n", buswidth);
- info = fbtft_framebuffer_alloc(&flex_display, dev);
+ info = fbtft_framebuffer_alloc(&flex_display, dev, dev->platform_data);
if (!info)
return -ENOMEM;
@@ -439,15 +463,12 @@ static int flexfb_probe_common(struct spi_device *sdev,
}
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) {
+ if (par->spi->master->bits_per_word_mask
+ & SPI_BPW_MASK(9)) {
+ par->spi->bits_per_word = 9;
+ } else {
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,
@@ -527,8 +548,8 @@ static int flexfb_remove_common(struct device *dev, struct fb_info *info)
return -EINVAL;
par = info->par;
if (par)
- fbtft_par_dbg(DEBUG_DRIVER_INIT_FUNCTIONS, par,
- "%s()\n", __func__);
+ fbtft_par_dbg(DEBUG_DRIVER_INIT_FUNCTIONS, par, "%s()\n",
+ __func__);
fbtft_unregister_framebuffer(info);
fbtft_framebuffer_release(info);
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