From: Nicolas Ferre <[email protected]>
Adds STN LCD support on at91sam9261ek. Uses a black and
white screen from Hitachi : SP06Q002.
Signed-off-by: Nicolas Ferre <[email protected]>
---
Submitted in linux-fbdev for a RFC but will make its way
through the AT91 maintainer.
Relies on the CONFIG_FB_ATMEL_STN switch to choose the TFT or
STN display (switch in drivers/video/Kconfig).
arch/arm/mach-at91/at91sam9261_devices.c | 15 ++++
arch/arm/mach-at91/board-sam9261ek.c | 74 +++++++++++++++++++--
2 files changed, 83 insertions(+), 6 deletions(-)
Index: b/arch/arm/mach-at91/board-sam9261ek.c
===================================================================
--- a/arch/arm/mach-at91/board-sam9261ek.c
+++ b/arch/arm/mach-at91/board-sam9261ek.c
@@ -281,6 +281,8 @@
* LCD Controller
*/
#if defined(CONFIG_FB_ATMEL) || defined(CONFIG_FB_ATMEL_MODULE)
+
+/* TFT */
static struct fb_videomode at91_tft_vga_modes[] = {
{
.name = "TX09D50VM1CCA @ 60",
@@ -297,7 +299,7 @@
},
};
-static struct fb_monspecs at91fb_default_monspecs = {
+static struct fb_monspecs at91fb_default_tft_monspecs = {
.manufacturer = "HIT",
.monitor = "TX09D50VM1CCA",
@@ -309,11 +311,11 @@
.vfmax = 150,
};
-#define AT91SAM9261_DEFAULT_LCDCON2 (ATMEL_LCDC_MEMOR_LITTLE \
+#define AT91SAM9261_DEFAULT_TFT_LCDCON2 (ATMEL_LCDC_MEMOR_LITTLE \
| ATMEL_LCDC_DISTYPE_TFT \
| ATMEL_LCDC_CLKMOD_ALWAYSACTIVE)
-static void at91_lcdc_power_control(int on)
+static void at91_lcdc_tft_power_control(int on)
{
if (on)
at91_set_gpio_value(AT91_PIN_PA12, 0); /* power up */
@@ -321,15 +323,75 @@
at91_set_gpio_value(AT91_PIN_PA12, 1); /* power down */
}
+/* STN */
+static struct fb_videomode at91_stn_modes[] = {
+ {
+ .name = "SP06Q002 @ 75",
+ .refresh = 75,
+ .xres = 320, .yres = 240,
+ .pixclock = KHZ2PICOS(1440),
+
+ .left_margin = 1, .right_margin = 1,
+ .upper_margin = 0, .lower_margin = 0,
+ .hsync_len = 1, .vsync_len = 1,
+
+ .sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
+ .vmode = FB_VMODE_NONINTERLACED,
+ },
+};
+
+static struct fb_monspecs at91fb_default_stn_monspecs = {
+ .manufacturer = "HIT",
+ .monitor = "SP06Q002",
+
+ .modedb = at91_stn_modes,
+ .modedb_len = ARRAY_SIZE(at91_stn_modes),
+ .hfmin = 15000,
+ .hfmax = 64000,
+ .vfmin = 50,
+ .vfmax = 150,
+};
+
+#define AT91SAM9261_DEFAULT_STN_LCDCON2 (ATMEL_LCDC_MEMOR_LITTLE \
+ | ATMEL_LCDC_DISTYPE_STNMONO \
+ | ATMEL_LCDC_CLKMOD_ALWAYSACTIVE \
+ | ATMEL_LCDC_IFWIDTH_4 \
+ | ATMEL_LCDC_SCANMOD_SINGLE)
+
+static void at91_lcdc_stn_power_control(int on)
+{
+ /* backlight */
+ if (on) {
+ /* power up */
+ at91_set_gpio_value(AT91_PIN_PC14, 0);
+ at91_set_gpio_value(AT91_PIN_PC15, 0);
+ } else {
+ /* power down */
+ at91_set_gpio_value(AT91_PIN_PC14, 1);
+ at91_set_gpio_value(AT91_PIN_PC15, 1);
+ }
+}
+
/* Driver datas */
+#if defined(CONFIG_FB_ATMEL_STN)
+static struct atmel_lcdfb_info __initdata ek_lcdc_data = {
+ .default_bpp = 1,
+ .default_dmacon = ATMEL_LCDC_DMAEN,
+ .default_lcdcon2 = AT91SAM9261_DEFAULT_STN_LCDCON2,
+ .default_monspecs = &at91fb_default_stn_monspecs,
+ .atmel_lcdfb_power_control = at91_lcdc_stn_power_control,
+ .guard_time = 1,
+};
+#else
static struct atmel_lcdfb_info __initdata ek_lcdc_data = {
.default_bpp = 16,
.default_dmacon = ATMEL_LCDC_DMAEN,
- .default_lcdcon2 = AT91SAM9261_DEFAULT_LCDCON2,
- .default_monspecs = &at91fb_default_monspecs,
- .atmel_lcdfb_power_control = at91_lcdc_power_control,
+ .default_lcdcon2 = AT91SAM9261_DEFAULT_TFT_LCDCON2,
+ .default_monspecs = &at91fb_default_tft_monspecs,
+ .atmel_lcdfb_power_control = at91_lcdc_tft_power_control,
.guard_time = 1,
};
+#endif
#else
static struct atmel_lcdfb_info __initdata ek_lcdc_data;
Index: b/arch/arm/mach-at91/at91sam9261_devices.c
===================================================================
--- a/arch/arm/mach-at91/at91sam9261_devices.c
+++ b/arch/arm/mach-at91/at91sam9261_devices.c
@@ -475,6 +475,20 @@
return;
}
+#if defined(CONFIG_FB_ATMEL_STN)
+ at91_set_A_periph(AT91_PIN_PB0, 0); /* LCDVSYNC */
+ at91_set_A_periph(AT91_PIN_PB1, 0); /* LCDHSYNC */
+ at91_set_A_periph(AT91_PIN_PB2, 0); /* LCDDOTCK */
+ at91_set_A_periph(AT91_PIN_PB3, 0); /* LCDDEN */
+ at91_set_A_periph(AT91_PIN_PB4, 0); /* LCDCC */
+ at91_set_A_periph(AT91_PIN_PB5, 0); /* LCDD0 */
+ at91_set_A_periph(AT91_PIN_PB6, 0); /* LCDD1 */
+ at91_set_A_periph(AT91_PIN_PB7, 0); /* LCDD2 */
+ at91_set_A_periph(AT91_PIN_PB8, 0); /* LCDD3 */
+
+ at91_set_gpio_output(AT91_PIN_PC14, 1); /* backlight off */
+ at91_set_gpio_output(AT91_PIN_PC15, 1); /* backlight off */
+#else
at91_set_A_periph(AT91_PIN_PB1, 0); /* LCDHSYNC */
at91_set_A_periph(AT91_PIN_PB2, 0); /* LCDDOTCK */
at91_set_A_periph(AT91_PIN_PB3, 0); /* LCDDEN */
@@ -497,6 +511,7 @@
at91_set_B_periph(AT91_PIN_PB26, 0); /* LCDD21 */
at91_set_B_periph(AT91_PIN_PB27, 0); /* LCDD22 */
at91_set_B_periph(AT91_PIN_PB28, 0); /* LCDD23 */
+#endif
lcdc_data = *data;
platform_device_register(&at91_lcdc_device);
-
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