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Message-ID: <20080327200346.34c22c9c@ephemeral>
Date: Thu, 27 Mar 2008 20:03:46 -0400
From: Andres Salomon <dilinger@...ued.net>
To: Andrew Morton <akpm@...ux-foundation.org>
Cc: adaplas@...il.com, linux-kernel@...r.kernel.org,
linux-fbdev-devel@...ts.sourceforge.net, info-linux@...de.amd.com,
jordan.crouse@....com
Subject: [PATCH 1/7] lxfb: create GP/DC/VP/FP-specific handlers rather than
using readl/writel
This creates read_gp/write_gp, read_dc/write_dc, read_vp/write_vp, and
read_fp/write_fp for reading and updating those registers. Note that
we don't follow the 'DF' naming; those will be renamed to VP shortly.
Signed-off-by: Andres Salomon <dilinger@...ian.org>
---
drivers/video/geode/lxfb.h | 43 +++++++++++
drivers/video/geode/lxfb_core.c | 9 +--
drivers/video/geode/lxfb_ops.c | 151 ++++++++++++++++++---------------------
3 files changed, 116 insertions(+), 87 deletions(-)
diff --git a/drivers/video/geode/lxfb.h b/drivers/video/geode/lxfb.h
index 8c83a1b..60579f4 100644
--- a/drivers/video/geode/lxfb.h
+++ b/drivers/video/geode/lxfb.h
@@ -188,4 +188,47 @@ void lx_set_palette_reg(struct fb_info *, unsigned int, unsigned int,
#define GP_BS_BLT_BUSY (1 << 0)
#define GP_BS_CB_EMPTY (1 << 4)
+
+/* register access functions */
+
+static inline uint32_t read_gp(struct lxfb_par *par, int reg)
+{
+ return readl(par->gp_regs + reg);
+}
+
+static inline void write_gp(struct lxfb_par *par, int reg, uint32_t val)
+{
+ writel(val, par->gp_regs + reg);
+}
+
+static inline uint32_t read_dc(struct lxfb_par *par, int reg)
+{
+ return readl(par->dc_regs + reg);
+}
+
+static inline void write_dc(struct lxfb_par *par, int reg, uint32_t val)
+{
+ writel(val, par->dc_regs + reg);
+}
+
+static inline uint32_t read_vp(struct lxfb_par *par, int reg)
+{
+ return readl(par->df_regs + reg);
+}
+
+static inline void write_vp(struct lxfb_par *par, int reg, uint32_t val)
+{
+ writel(val, par->df_regs + reg);
+}
+
+static inline uint32_t read_fp(struct lxfb_par *par, int reg)
+{
+ return readl(par->df_regs + reg);
+}
+
+static inline void write_fp(struct lxfb_par *par, int reg, uint32_t val)
+{
+ writel(val, par->df_regs + reg);
+}
+
#endif
diff --git a/drivers/video/geode/lxfb_core.c b/drivers/video/geode/lxfb_core.c
index eb6b881..a1d14e0 100644
--- a/drivers/video/geode/lxfb_core.c
+++ b/drivers/video/geode/lxfb_core.c
@@ -366,12 +366,9 @@ static int __init lxfb_map_video_memory(struct fb_info *info,
if (par->df_regs == NULL)
return ret;
- writel(DC_UNLOCK_CODE, par->dc_regs + DC_UNLOCK);
-
- writel(info->fix.smem_start & 0xFF000000,
- par->dc_regs + DC_PHY_MEM_OFFSET);
-
- writel(0, par->dc_regs + DC_UNLOCK);
+ write_dc(par, DC_UNLOCK, DC_UNLOCK_CODE);
+ write_dc(par, DC_PHY_MEM_OFFSET, info->fix.smem_start & 0xFF000000);
+ write_dc(par, DC_UNLOCK, 0);
dev_info(&dev->dev, "%d KB of video memory at 0x%lx\n",
info->fix.smem_len / 1024, info->fix.smem_start);
diff --git a/drivers/video/geode/lxfb_ops.c b/drivers/video/geode/lxfb_ops.c
index a52c180..6efd60e 100644
--- a/drivers/video/geode/lxfb_ops.c
+++ b/drivers/video/geode/lxfb_ops.c
@@ -160,49 +160,48 @@ static void lx_graphics_disable(struct fb_info *info)
/* Note: This assumes that the video is in a quitet state */
- writel(0, par->df_regs + DF_ALPHA_CONTROL_1);
- writel(0, par->df_regs + DF_ALPHA_CONTROL_1 + 32);
- writel(0, par->df_regs + DF_ALPHA_CONTROL_1 + 64);
+ write_vp(par, DF_ALPHA_CONTROL_1, 0);
+ write_vp(par, DF_ALPHA_CONTROL_1 + 32, 0);
+ write_vp(par, DF_ALPHA_CONTROL_1 + 64, 0);
/* Turn off the VGA and video enable */
- val = readl (par->dc_regs + DC_GENERAL_CFG) &
- ~(DC_GCFG_VGAE | DC_GCFG_VIDE);
+ val = read_dc(par, DC_GENERAL_CFG) & ~(DC_GCFG_VGAE | DC_GCFG_VIDE);
- writel(val, par->dc_regs + DC_GENERAL_CFG);
+ write_dc(par, DC_GENERAL_CFG, val);
- val = readl(par->df_regs + DF_VIDEO_CFG) & ~DF_VCFG_VID_EN;
- writel(val, par->df_regs + DF_VIDEO_CFG);
+ val = read_vp(par, DF_VIDEO_CFG) & ~DF_VCFG_VID_EN;
+ write_vp(par, DF_VIDEO_CFG, val);
- writel( DC_IRQ_MASK | DC_VSYNC_IRQ_MASK |
- DC_IRQ_STATUS | DC_VSYNC_IRQ_STATUS,
- par->dc_regs + DC_IRQ);
+ write_dc(par, DC_IRQ, DC_IRQ_MASK | DC_VSYNC_IRQ_MASK | DC_IRQ_STATUS |
+ DC_VSYNC_IRQ_STATUS);
- val = readl(par->dc_regs + DC_GENLCK_CTRL) & ~DC_GENLCK_ENABLE;
- writel(val, par->dc_regs + DC_GENLCK_CTRL);
+ val = read_dc(par, DC_GENLCK_CTRL) & ~DC_GENLCK_ENABLE;
+ write_dc(par, DC_GENLCK_CTRL, val);
- val = readl(par->dc_regs + DC_COLOR_KEY) & ~DC_CLR_KEY_ENABLE;
- writel(val & ~DC_CLR_KEY_ENABLE, par->dc_regs + DC_COLOR_KEY);
+ val = read_dc(par, DC_COLOR_KEY) & ~DC_CLR_KEY_ENABLE;
+ write_dc(par, DC_COLOR_KEY, val & ~DC_CLR_KEY_ENABLE);
/* We don't actually blank the panel, due to the long latency
involved with bringing it back */
- val = readl(par->df_regs + DF_MISC) | DF_MISC_DAC_PWRDN;
- writel(val, par->df_regs + DF_MISC);
+ val = read_vp(par, DF_MISC) | DF_MISC_DAC_PWRDN;
+ write_vp(par, DF_MISC, val);
/* Turn off the display */
- val = readl(par->df_regs + DF_DISPLAY_CFG);
- writel(val & ~(DF_DCFG_CRT_EN | DF_DCFG_HSYNC_EN | DF_DCFG_VSYNC_EN |
- DF_DCFG_DAC_BL_EN), par->df_regs + DF_DISPLAY_CFG);
+ val = read_vp(par, DF_DISPLAY_CFG);
+ write_vp(par, DF_DISPLAY_CFG, val &
+ ~(DF_DCFG_CRT_EN | DF_DCFG_HSYNC_EN |
+ DF_DCFG_VSYNC_EN | DF_DCFG_DAC_BL_EN));
- gcfg = readl(par->dc_regs + DC_GENERAL_CFG);
+ gcfg = read_dc(par, DC_GENERAL_CFG);
gcfg &= ~(DC_GCFG_CMPE | DC_GCFG_DECE);
- writel(gcfg, par->dc_regs + DC_GENERAL_CFG);
+ write_dc(par, DC_GENERAL_CFG, gcfg);
/* Turn off the TGEN */
- val = readl(par->dc_regs + DC_DISPLAY_CFG);
+ val = read_dc(par, DC_DISPLAY_CFG);
val &= ~DC_DCFG_TGEN;
- writel(val, par->dc_regs + DC_DISPLAY_CFG);
+ write_dc(par, DC_DISPLAY_CFG, val);
/* Wait 1000 usecs to ensure that the TGEN is clear */
udelay(1000);
@@ -210,12 +209,12 @@ static void lx_graphics_disable(struct fb_info *info)
/* Turn off the FIFO loader */
gcfg &= ~DC_GCFG_DFLE;
- writel(gcfg, par->dc_regs + DC_GENERAL_CFG);
+ write_dc(par, DC_GENERAL_CFG, gcfg);
/* Lastly, wait for the GP to go idle */
do {
- val = readl(par->gp_regs + GP_BLT_STATUS);
+ val = read_gp(par, GP_BLT_STATUS);
} while ((val & GP_BS_BLT_BUSY) || !(val & GP_BS_CB_EMPTY));
}
@@ -225,11 +224,11 @@ static void lx_graphics_enable(struct fb_info *info)
u32 temp, config;
/* Set the video request register */
- writel(0, par->df_regs + DF_VIDEO_REQUEST);
+ write_vp(par, DF_VIDEO_REQUEST, 0);
/* Set up the polarities */
- config = readl(par->df_regs + DF_DISPLAY_CFG);
+ config = read_vp(par, DF_DISPLAY_CFG);
config &= ~(DF_DCFG_CRT_SYNC_SKW_MASK | DF_DCFG_PWR_SEQ_DLY_MASK |
DF_DCFG_CRT_HSYNC_POL | DF_DCFG_CRT_VSYNC_POL);
@@ -246,12 +245,9 @@ static void lx_graphics_enable(struct fb_info *info)
if (par->output & OUTPUT_PANEL) {
u32 msrlo, msrhi;
- writel(DF_DEFAULT_TFT_PMTIM1,
- par->df_regs + DF_PANEL_TIM1);
- writel(DF_DEFAULT_TFT_PMTIM2,
- par->df_regs + DF_PANEL_TIM2);
- writel(DF_DEFAULT_TFT_DITHCTL,
- par->df_regs + DF_DITHER_CONTROL);
+ write_fp(par, DF_PANEL_TIM1, DF_DEFAULT_TFT_PMTIM1);
+ write_fp(par, DF_PANEL_TIM2, DF_DEFAULT_TFT_PMTIM2);
+ write_fp(par, DF_DITHER_CONTROL, DF_DEFAULT_TFT_DITHCTL);
msrlo = DF_DEFAULT_TFT_PAD_SEL_LOW;
msrhi = DF_DEFAULT_TFT_PAD_SEL_HIGH;
@@ -264,27 +260,24 @@ static void lx_graphics_enable(struct fb_info *info)
DF_DCFG_VSYNC_EN | DF_DCFG_DAC_BL_EN;
}
- writel(config, par->df_regs + DF_DISPLAY_CFG);
+ write_vp(par, DF_DISPLAY_CFG, config);
/* Turn the CRT dacs back on */
if (par->output & OUTPUT_CRT) {
- temp = readl(par->df_regs + DF_MISC);
+ temp = read_vp(par, DF_MISC);
temp &= ~(DF_MISC_DAC_PWRDN | DF_MISC_A_PWRDN);
- writel(temp, par->df_regs + DF_MISC);
+ write_vp(par, DF_MISC, temp);
}
/* Turn the panel on (if it isn't already) */
if (par->output & OUTPUT_PANEL) {
- temp = readl(par->df_regs + DF_FP_PM);
+ temp = read_fp(par, DF_FP_PM);
if (!(temp & 0x09))
- writel(temp | DF_FP_PM_P, par->df_regs + DF_FP_PM);
+ write_fp(par, DF_FP_PM, temp | DF_FP_PM_P);
}
-
- temp = readl(par->df_regs + DF_MISC);
- temp = readl(par->df_regs + DF_DISPLAY_CFG);
}
unsigned int lx_framebuffer_size(void)
@@ -314,7 +307,7 @@ void lx_set_mode(struct fb_info *info)
int vactive, vblankstart, vsyncstart, vsyncend, vblankend, vtotal;
/* Unlock the DC registers */
- writel(DC_UNLOCK_CODE, par->dc_regs + DC_UNLOCK);
+ write_dc(par, DC_UNLOCK, DC_UNLOCK_CODE);
lx_graphics_disable(info);
@@ -341,22 +334,22 @@ void lx_set_mode(struct fb_info *info)
/* Clear the various buffers */
/* FIXME: Adjust for panning here */
- writel(0, par->dc_regs + DC_FB_START);
- writel(0, par->dc_regs + DC_CB_START);
- writel(0, par->dc_regs + DC_CURSOR_START);
+ write_dc(par, DC_FB_START, 0);
+ write_dc(par, DC_CB_START, 0);
+ write_dc(par, DC_CURSOR_START, 0);
/* FIXME: Add support for interlacing */
/* FIXME: Add support for scaling */
- val = readl(par->dc_regs + DC_GENLCK_CTRL);
+ val = read_dc(par, DC_GENLCK_CTRL);
val &= ~(DC_GC_ALPHA_FLICK_ENABLE |
DC_GC_FLICKER_FILTER_ENABLE | DC_GC_FLICKER_FILTER_MASK);
/* Default scaling params */
- writel((0x4000 << 16) | 0x4000, par->dc_regs + DC_GFX_SCALE);
- writel(0, par->dc_regs + DC_IRQ_FILT_CTL);
- writel(val, par->dc_regs + DC_GENLCK_CTRL);
+ write_dc(par, DC_GFX_SCALE, (0x4000 << 16) | 0x4000);
+ write_dc(par, DC_IRQ_FILT_CTL, 0);
+ write_dc(par, DC_GENLCK_CTRL, val);
/* FIXME: Support compression */
@@ -372,15 +365,15 @@ void lx_set_mode(struct fb_info *info)
max = info->fix.line_length * info->var.yres;
max = (max + 0x3FF) & 0xFFFFFC00;
- writel(max | DC_DV_TOP_ENABLE, par->dc_regs + DC_DV_TOP);
+ write_dc(par, DC_DV_TOP, max | DC_DV_TOP_ENABLE);
- val = readl(par->dc_regs + DC_DV_CTL) & ~DC_DV_LINE_SIZE_MASK;
- writel(val | dv, par->dc_regs + DC_DV_CTL);
+ val = read_dc(par, DC_DV_CTL) & ~DC_DV_LINE_SIZE_MASK;
+ write_dc(par, DC_DV_CTL, val | dv);
size = info->var.xres * (info->var.bits_per_pixel >> 3);
- writel(info->fix.line_length >> 3, par->dc_regs + DC_GRAPHICS_PITCH);
- writel((size + 7) >> 3, par->dc_regs + DC_LINE_SIZE);
+ write_dc(par, DC_GRAPHICS_PITCH, info->fix.line_length >> 3);
+ write_dc(par, DC_LINE_SIZE, (size + 7) >> 3);
/* Set default watermark values */
@@ -437,35 +430,31 @@ void lx_set_mode(struct fb_info *info)
vblankend = vsyncend + info->var.upper_margin;
vtotal = vblankend;
- writel((hactive - 1) | ((htotal - 1) << 16),
- par->dc_regs + DC_H_ACTIVE_TIMING);
- writel((hblankstart - 1) | ((hblankend - 1) << 16),
- par->dc_regs + DC_H_BLANK_TIMING);
- writel((hsyncstart - 1) | ((hsyncend - 1) << 16),
- par->dc_regs + DC_H_SYNC_TIMING);
-
- writel((vactive - 1) | ((vtotal - 1) << 16),
- par->dc_regs + DC_V_ACTIVE_TIMING);
-
- writel((vblankstart - 1) | ((vblankend - 1) << 16),
- par->dc_regs + DC_V_BLANK_TIMING);
+ write_dc(par, DC_H_ACTIVE_TIMING, (hactive - 1) | ((htotal - 1) << 16));
+ write_dc(par, DC_H_BLANK_TIMING,
+ (hblankstart - 1) | ((hblankend - 1) << 16));
+ write_dc(par, DC_H_SYNC_TIMING,
+ (hsyncstart - 1) | ((hsyncend - 1) << 16));
- writel((vsyncstart - 1) | ((vsyncend - 1) << 16),
- par->dc_regs + DC_V_SYNC_TIMING);
+ write_dc(par, DC_V_ACTIVE_TIMING, (vactive - 1) | ((vtotal - 1) << 16));
+ write_dc(par, DC_V_BLANK_TIMING,
+ (vblankstart - 1) | ((vblankend - 1) << 16));
+ write_dc(par, DC_V_SYNC_TIMING,
+ (vsyncstart - 1) | ((vsyncend - 1) << 16));
- writel( (info->var.xres - 1) << 16 | (info->var.yres - 1),
- par->dc_regs + DC_FB_ACTIVE);
+ write_dc(par, DC_FB_ACTIVE,
+ (info->var.xres - 1) << 16 | (info->var.yres - 1));
/* And re-enable the graphics output */
lx_graphics_enable(info);
/* Write the two main configuration registers */
- writel(dcfg, par->dc_regs + DC_DISPLAY_CFG);
- writel(0, par->dc_regs + DC_ARB_CFG);
- writel(gcfg, par->dc_regs + DC_GENERAL_CFG);
+ write_dc(par, DC_DISPLAY_CFG, dcfg);
+ write_dc(par, DC_ARB_CFG, 0);
+ write_dc(par, DC_GENERAL_CFG, gcfg);
/* Lock the DC registers */
- writel(0, par->dc_regs + DC_UNLOCK);
+ write_dc(par, DC_UNLOCK, 0);
}
void lx_set_palette_reg(struct fb_info *info, unsigned regno,
@@ -480,8 +469,8 @@ void lx_set_palette_reg(struct fb_info *info, unsigned regno,
val |= (green) & 0x00ff00;
val |= (blue >> 8) & 0x0000ff;
- writel(regno, par->dc_regs + DC_PAL_ADDRESS);
- writel(val, par->dc_regs + DC_PAL_DATA);
+ write_dc(par, DC_PAL_ADDRESS, regno);
+ write_dc(par, DC_PAL_DATA, val);
}
int lx_blank_display(struct fb_info *info, int blank_mode)
@@ -511,7 +500,7 @@ int lx_blank_display(struct fb_info *info, int blank_mode)
return -EINVAL;
}
- dcfg = readl(par->df_regs + DF_DISPLAY_CFG);
+ dcfg = read_vp(par, DF_DISPLAY_CFG);
dcfg &= ~(DF_DCFG_DAC_BL_EN
| DF_DCFG_HSYNC_EN | DF_DCFG_VSYNC_EN);
if (!blank)
@@ -520,17 +509,17 @@ int lx_blank_display(struct fb_info *info, int blank_mode)
dcfg |= DF_DCFG_HSYNC_EN;
if (vsync)
dcfg |= DF_DCFG_VSYNC_EN;
- writel(dcfg, par->df_regs + DF_DISPLAY_CFG);
+ write_vp(par, DF_DISPLAY_CFG, dcfg);
/* Power on/off flat panel */
if (par->output & OUTPUT_PANEL) {
- fp_pm = readl(par->df_regs + DF_FP_PM);
+ fp_pm = read_fp(par, DF_FP_PM);
if (blank_mode == FB_BLANK_POWERDOWN)
fp_pm &= ~DF_FP_PM_P;
else
fp_pm |= DF_FP_PM_P;
- writel(fp_pm, par->df_regs + DF_FP_PM);
+ write_fp(par, DF_FP_PM, fp_pm);
}
return 0;
--
1.5.3.7
--
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