fbdev: andes: ftlcdc100: support the framebuffer feature (torvalds#187)

Support FTLCDC100 framebuffer function.

Reformed from the following patches on RISCV-Linux-6.1:
- (c2be1a1) fbdev: andes: ftlcdc100: change OSD_putc if...else to switch
- (db22aa6) fbdev: andes: ftlcdc100: Change the default LCD panel type
  from CONFIG_PANEL_LW500AC9601 to CONFIG_PANEL_AUA036QN01.
- (7137e6f) fbdev: andes: ftlcdc100: To support AUA036QN01, change the
  FFB mode from 24BPP to 16BPP.

Signed-off-by: Charles Ci-Jyun Wu <[email protected]>
Signed-off-by: CL Wang <[email protected]>

Co-authored-by: CL Chin-Long Wang <[email protected]>
Reviewed-on: https://gitea.andestech.com/RD-SW/linux/pulls/187
Reviewed-by: randolph <[email protected]>
Reviewed-by: CL Chin-Long Wang <[email protected]>
Co-authored-by: charles <[email protected]>
Co-committed-by: charles <[email protected]>

Author: 2 people

arch/riscv/configs/andes-support.config

@@ -24,3 +24,8 @@ CONFIG_ATCIIC_IRQ=y
 
 CONFIG_GPIO_ATCGPIO100=y
 CONFIG_ANDES_ATCSMU=y
+
+CONFIG_FB_FTLCDC100=y
+CONFIG_PANEL_AUA036QN01=y
+CONFIG_FFB_MODE_RGB=y
+CONFIG_FFB_MODE_16BPP=y

arch/riscv/configs/andes_defconfig

@@ -179,6 +179,10 @@ CONFIG_RCU_EQS_DEBUG=y
 # CONFIG_RUNTIME_TESTING_MENU is not set
 CONFIG_MEMTEST=y
 
+CONFIG_FB_CFB_FILLRECT=y
+CONFIG_FB_CFB_COPYAREA=y
+CONFIG_FB_CFB_IMAGEBLIT=y
+
 CONFIG_SOUND=y
 CONFIG_SOUND_OSS_CORE=y
 CONFIG_SOUND_OSS_CORE_PRECLAIM=y

drivers/video/fbdev/Kconfig

@@ -1814,5 +1814,6 @@ config FB_SM712
 source "drivers/video/fbdev/omap/Kconfig"
 source "drivers/video/fbdev/omap2/Kconfig"
 source "drivers/video/fbdev/mmp/Kconfig"
+source "drivers/video/fbdev/ftlcdc100/Kconfig"
 
 source "drivers/video/fbdev/core/Kconfig"

drivers/video/fbdev/Makefile

@@ -111,6 +111,7 @@ obj-y                             += omap2/
 obj-$(CONFIG_XEN_FBDEV_FRONTEND)  += xen-fbfront.o
 obj-$(CONFIG_FB_CARMINE)          += carminefb.o
 obj-$(CONFIG_FB_MB862XX)	  += mb862xx/
+obj-$(CONFIG_FB_FTLCDC100)        += ftlcdc100/
 obj-$(CONFIG_FB_HYPERV)		  += hyperv_fb.o
 obj-$(CONFIG_FB_OPENCORES)	  += ocfb.o
 obj-$(CONFIG_FB_SM712)		  += sm712fb.o

drivers/video/fbdev/ftlcdc100/Kconfig

@@ -0,0 +1,74 @@
+config FB_FTLCDC100
+        tristate "Faraday FTLCDC100 driver"
+        depends on FB
+        select FB_CFB_FILLRECT
+        select FB_CFB_COPYAREA
+        select FB_CFB_IMAGEBLIT
+
+	choice
+		prompt "Default LCD Panel"
+		depends on FB_FTLCDC100
+		default PANEL_AUA036QN01
+		help
+		  This option select a default panel setting for the LCD controller
+
+		config PANEL_AUA036QN01
+			bool "AU 3.5 inch LCD Panel"
+
+		config PANEL_CH7013A
+			bool "Chrontel Digital PC to TV Encoder"
+			select I2C
+			select I2C_FARADAY
+			select CH7013A
+
+		config PANEL_AUA070VW04
+			bool "AU 7.0 inch LCD Panel"
+
+		config PANEL_LW500AC9601
+			bool "CHIMEI 5.0 inch LCD panel"
+
+	endchoice
+
+	# config FTLCD_OSD
+	# 	bool "Enable OSD (On Screen Display)"
+	# 	depends on FB_FTLCDC100
+	# 	default n
+	# 	---help---
+	# 	This enables access to the OSD (On Screen Display) for Faraday
+	# 	FTLCDC100 LCD control.  Disabling OSD will reduce the size of
+	# 	the kernel by approximately 6kb.
+	#
+
+	choice
+	        prompt "Default Color Mode"
+	        depends on FB_FTLCDC100
+	        default FFB_MODE_RGB
+	        help
+	          This option select default color mode
+
+		config FFB_MODE_RGB
+			bool "RGB Mode"
+		config FFB_MODE_YUV422
+			bool "YUV422 Mode"
+		config FFB_MODE_YUV420
+			bool "YUV420 Mode"
+	endchoice
+
+	choice
+	        prompt "Default BPP"
+	        depends on FB_FTLCDC100
+	        default FFB_MODE_16BPP
+	        help
+	          This option select default BPP (bits-per-pixel)
+
+		config FFB_MODE_8BPP
+			depends on FFB_MODE_RGB || FFB_MODE_YUV420
+			bool "8 bits-per-pixel"
+		config FFB_MODE_16BPP
+			depends on FFB_MODE_RGB || FFB_MODE_YUV422
+			bool "16 bits-per-pixel"
+		config FFB_MODE_24BPP
+			depends on FFB_MODE_RGB
+			bool "24 bits-per-pixel"
+	endchoice
+

drivers/video/fbdev/ftlcdc100/Makefile

@@ -0,0 +1 @@
+obj-$(CONFIG_FB_FTLCDC100) += faradayfb-main.o