From edd6e3f89d7fe245149669400bd213140c16d6e4 Mon Sep 17 00:00:00 2001 From: Pawel Osciak Date: Tue, 17 Nov 2009 08:41:19 +0100 Subject: [PATCH] ARM: S5PC1xx: add platform helpers for s3c-fb device Samsung S5PC100 has LCD-controller compatible with the one known from previous SoCs series. Add required platform setup and support code that it can be used with s3c-fb driver. Signed-off-by: Pawel Osciak Signed-off-by: Kyungmin Park Signed-off-by: Marek Szyprowski Signed-off-by: Ben Dooks --- arch/arm/mach-s5pc100/include/mach/irqs.h | 5 + arch/arm/mach-s5pc100/include/mach/regs-fb.h | 139 +++++++++++++++++++ arch/arm/plat-s3c/include/plat/fb.h | 7 + arch/arm/plat-s5pc1xx/Kconfig | 5 + arch/arm/plat-s5pc1xx/Makefile | 1 + arch/arm/plat-s5pc1xx/setup-fb-24bpp.c | 49 +++++++ 6 files changed, 206 insertions(+) create mode 100644 arch/arm/mach-s5pc100/include/mach/regs-fb.h create mode 100644 arch/arm/plat-s5pc1xx/setup-fb-24bpp.c diff --git a/arch/arm/mach-s5pc100/include/mach/irqs.h b/arch/arm/mach-s5pc100/include/mach/irqs.h index 622720dba289..b53fa48a52c6 100644 --- a/arch/arm/mach-s5pc100/include/mach/irqs.h +++ b/arch/arm/mach-s5pc100/include/mach/irqs.h @@ -11,4 +11,9 @@ #include +/* LCD */ +#define IRQ_LCD_FIFO IRQ_LCD0 +#define IRQ_LCD_VSYNC IRQ_LCD1 +#define IRQ_LCD_SYSTEM IRQ_LCD2 + #endif /* __ASM_ARCH_IRQ_H */ diff --git a/arch/arm/mach-s5pc100/include/mach/regs-fb.h b/arch/arm/mach-s5pc100/include/mach/regs-fb.h new file mode 100644 index 000000000000..1732cd28c765 --- /dev/null +++ b/arch/arm/mach-s5pc100/include/mach/regs-fb.h @@ -0,0 +1,139 @@ +/* arch/arm/mach-s5pc100/include/mach/regs-fb.h + * + * Copyright 2009 Samsung Electronics Co. + * Pawel Osciak + * + * Framebuffer register definitions for Samsung S5PC100. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. +*/ + +#ifndef __ASM_ARCH_REGS_FB_H +#define __ASM_ARCH_REGS_FB_H __FILE__ + +#include + +/* VP1 interface timing control */ +#define VP1CON0 (0x118) +#define VP1_RATECON_EN (1 << 31) +#define VP1_CLKRATE_MASK (0xff) + +#define VP1CON1 (0x11c) +#define VP1_VTREGCON_EN (1 << 31) +#define VP1_VBPD_MASK (0xfff) +#define VP1_VBPD_SHIFT (16) + + +#define WPALCON_H (0x19c) +#define WPALCON_L (0x1a0) + +/* Pallete contro for WPAL0 and WPAL1 is the same as in S3C64xx, but + * different for WPAL2-4 + */ +/* In WPALCON_L (aka WPALCON) */ +#define WPALCON_W1PAL_32BPP_A888 (0x7 << 3) +#define WPALCON_W0PAL_32BPP_A888 (0x7 << 0) + +/* To set W2PAL-W4PAL consist of one bit from WPALCON_L and two from WPALCON_H, + * e.g. W2PAL[2..0] is made of (WPALCON_H[10..9], WPALCON_L[6]). + */ +#define WPALCON_L_WxPAL_L_MASK (0x1) +#define WPALCON_L_W2PAL_L_SHIFT (6) +#define WPALCON_L_W3PAL_L_SHIFT (7) +#define WPALCON_L_W4PAL_L_SHIFT (8) + +#define WPALCON_L_WxPAL_H_MASK (0x3) +#define WPALCON_H_W2PAL_H_SHIFT (9) +#define WPALCON_H_W3PAL_H_SHIFT (13) +#define WPALCON_H_W4PAL_H_SHIFT (17) + +/* Per-window alpha value registers */ +/* For window 0 8-bit alpha values are in VIDW0ALPHAx, + * for windows 1-4 alpha values consist of two parts, the 4 low bits are + * taken from VIDWxALPHAx and 4 high bits are from VIDOSDxC, + * e.g. WIN1_ALPHA0_B[7..0] = (VIDOSD1C[3..0], VIDW1ALPHA0[3..0]) + */ +#define VIDWxALPHA0(_win) (0x200 + (_win * 8)) +#define VIDWxALPHA1(_win) (0x204 + (_win * 8)) + +/* Only for window 0 in VIDW0ALPHAx. */ +#define VIDW0ALPHAx_R(_x) ((_x) << 16) +#define VIDW0ALPHAx_R_MASK (0xff << 16) +#define VIDW0ALPHAx_R_SHIFT (16) +#define VIDW0ALPHAx_G(_x) ((_x) << 8) +#define VIDW0ALPHAx_G_MASK (0xff << 8) +#define VIDW0ALPHAx_G_SHIFT (8) +#define VIDW0ALPHAx_B(_x) ((_x) << 0) +#define VIDW0ALPHAx_B_MASK (0xff << 0) +#define VIDW0ALPHAx_B_SHIFT (0) + +/* Low 4 bits of alpha0-1 for windows 1-4 */ +#define VIDW14ALPHAx_R_L(_x) ((_x) << 16) +#define VIDW14ALPHAx_R_L_MASK (0xf << 16) +#define VIDW14ALPHAx_R_L_SHIFT (16) +#define VIDW14ALPHAx_G_L(_x) ((_x) << 8) +#define VIDW14ALPHAx_G_L_MASK (0xf << 8) +#define VIDW14ALPHAx_G_L_SHIFT (8) +#define VIDW14ALPHAx_B_L(_x) ((_x) << 0) +#define VIDW14ALPHAx_B_L_MASK (0xf << 0) +#define VIDW14ALPHAx_B_L_SHIFT (0) + + +/* Per-window blending equation control registers */ +#define BLENDEQx(_win) (0x244 + ((_win) * 4)) +#define BLENDEQ1 (0x244) +#define BLENDEQ2 (0x248) +#define BLENDEQ3 (0x24c) +#define BLENDEQ4 (0x250) + +#define BLENDEQx_Q_FUNC(_x) ((_x) << 18) +#define BLENDEQx_Q_FUNC_MASK (0xf << 18) +#define BLENDEQx_P_FUNC(_x) ((_x) << 12) +#define BLENDEQx_P_FUNC_MASK (0xf << 12) +#define BLENDEQx_B_FUNC(_x) ((_x) << 6) +#define BLENDEQx_B_FUNC_MASK (0xf << 6) +#define BLENDEQx_A_FUNC(_x) ((_x) << 0) +#define BLENDEQx_A_FUNC_MASK (0xf << 0) + +#define BLENDCON (0x260) +#define BLENDCON_8BIT_ALPHA (1 << 0) + +/* Per-window palette base addresses (start of palette memory). + * Each window palette area consists of 256 32-bit entries. + * START is the first address (entry 0th), END is the address of 255th entry. + */ +#define WIN0_PAL_BASE (0x2400) +#define WIN0_PAL_END (0x27fc) +#define WIN1_PAL_BASE (0x2800) +#define WIN1_PAL_END (0x2bfc) +#define WIN2_PAL_BASE (0x2c00) +#define WIN2_PAL_END (0x2ffc) +#define WIN3_PAL_BASE (0x3000) +#define WIN3_PAL_END (0x33fc) +#define WIN4_PAL_BASE (0x3400) +#define WIN4_PAL_END (0x37fc) + +#define WIN0_PAL(_entry) (WIN0_PAL_BASE + ((_entry) * 4)) +#define WIN1_PAL(_entry) (WIN1_PAL_BASE + ((_entry) * 4)) +#define WIN2_PAL(_entry) (WIN2_PAL_BASE + ((_entry) * 4)) +#define WIN3_PAL(_entry) (WIN3_PAL_BASE + ((_entry) * 4)) +#define WIN4_PAL(_entry) (WIN4_PAL_BASE + ((_entry) * 4)) + +static inline unsigned int s3c_fb_pal_reg(unsigned int window, int reg) +{ + switch (window) { + case 0: return WIN0_PAL(reg); + case 1: return WIN1_PAL(reg); + case 2: return WIN2_PAL(reg); + case 3: return WIN3_PAL(reg); + case 4: return WIN4_PAL(reg); + } + + BUG(); +} + + +#endif /* __ASM_ARCH_REGS_FB_H */ + diff --git a/arch/arm/plat-s3c/include/plat/fb.h b/arch/arm/plat-s3c/include/plat/fb.h index 214ff561b0dd..f8db87930f8b 100644 --- a/arch/arm/plat-s3c/include/plat/fb.h +++ b/arch/arm/plat-s3c/include/plat/fb.h @@ -70,4 +70,11 @@ extern void s3c_fb_set_platdata(struct s3c_fb_platdata *pd); */ extern void s3c64xx_fb_gpio_setup_24bpp(void); +/** + * s5pc100_fb_gpio_setup_24bpp() - S5PC100 setup function for 24bpp LCD + * + * Initialise the GPIO for an 24bpp LCD display on the RGB interface. + */ +extern void s5pc100_fb_gpio_setup_24bpp(void); + #endif /* __PLAT_S3C_FB_H */ diff --git a/arch/arm/plat-s5pc1xx/Kconfig b/arch/arm/plat-s5pc1xx/Kconfig index 86edd27c7f24..6ac48a6fba78 100644 --- a/arch/arm/plat-s5pc1xx/Kconfig +++ b/arch/arm/plat-s5pc1xx/Kconfig @@ -37,6 +37,11 @@ config CPU_S5PC100_CLOCK # platform specific device setup +config S5PC1XX_SETUP_FB_24BPP + bool + help + Common setup code for S5PC1XX with an 24bpp RGB display helper. + config S5PC100_SETUP_I2C0 bool default y diff --git a/arch/arm/plat-s5pc1xx/Makefile b/arch/arm/plat-s5pc1xx/Makefile index e860813cb8de..3d2ac7150b15 100644 --- a/arch/arm/plat-s5pc1xx/Makefile +++ b/arch/arm/plat-s5pc1xx/Makefile @@ -25,5 +25,6 @@ obj-$(CONFIG_CPU_S5PC100_CLOCK) += s5pc100-clock.o # Device setup obj-$(CONFIG_S5P_GPIO_CFG_S5PC1XX) += gpio-config.o +obj-$(CONFIG_S5PC1XX_SETUP_FB_24BPP) += setup-fb-24bpp.o obj-$(CONFIG_S5PC100_SETUP_I2C0) += setup-i2c0.o obj-$(CONFIG_S5PC100_SETUP_I2C1) += setup-i2c1.o diff --git a/arch/arm/plat-s5pc1xx/setup-fb-24bpp.c b/arch/arm/plat-s5pc1xx/setup-fb-24bpp.c new file mode 100644 index 000000000000..1a63768a9a2e --- /dev/null +++ b/arch/arm/plat-s5pc1xx/setup-fb-24bpp.c @@ -0,0 +1,49 @@ +/* + * linux/arch/arm/plat-s5pc100/setup-fb-24bpp.c + * + * Copyright 2009 Samsung Electronics + * + * Base S5PC1XX setup information for 24bpp LCD framebuffer + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include +#include +#include +#include + +#include +#include +#include +#include +#include + +#define DISR_OFFSET 0x7008 + +void s5pc100_fb_gpio_setup_24bpp(void) +{ + unsigned int gpio = 0; + + for (gpio = S5PC100_GPF0(0); gpio <= S5PC100_GPF0(7); gpio++) { + s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(2)); + s3c_gpio_setpull(gpio, S3C_GPIO_PULL_NONE); + } + + for (gpio = S5PC100_GPF1(0); gpio <= S5PC100_GPF1(7); gpio++) { + s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(2)); + s3c_gpio_setpull(gpio, S3C_GPIO_PULL_NONE); + } + + for (gpio = S5PC100_GPF2(0); gpio <= S5PC100_GPF2(7); gpio++) { + s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(2)); + s3c_gpio_setpull(gpio, S3C_GPIO_PULL_NONE); + } + + for (gpio = S5PC100_GPF3(0); gpio <= S5PC100_GPF3(3); gpio++) { + s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(2)); + s3c_gpio_setpull(gpio, S3C_GPIO_PULL_NONE); + } +}