[PATCH 10/18] ARM: S5PC1xx: add platform helpers for s3c-fb device
Marek Szyprowski
m.szyprowski at samsung.com
Thu Nov 12 03:21:54 EST 2009
From: Pawel Osciak <p.osciak at samsung.com>
From: Pawel Osciak <p.osciak at samsung.com>
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 <p.osciak at samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park at samsung.com>
Signed-off-by: Marek Szyprowski <m.szyprowski at samsung.com>
---
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(+), 0 deletions(-)
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 622720d..b53fa48 100644
--- a/arch/arm/mach-s5pc100/include/mach/irqs.h
+++ b/arch/arm/mach-s5pc100/include/mach/irqs.h
@@ -11,4 +11,9 @@
#include <plat/irqs.h>
+/* 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 0000000..1732cd2
--- /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 <p.osciak at samsung.com>
+ *
+ * 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 <plat/regs-fb-v4.h>
+
+/* 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 214ff56..f8db879 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 86edd27..6ac48a6 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 e860813..3d2ac71 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 0000000..b63f33e
--- /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 <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/fb.h>
+
+#include <mach/regs-fb.h>
+#include <mach/gpio.h>
+#include <mach/map.h>
+#include <plat/fb.h>
+#include <plat/gpio-cfg.h>
+#include <plat/gpio-cfg-s5pc1xx.h>
+
+#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);
+ }
+}
--
1.6.5
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