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Date: Thu, 23 Jun 2016 14:00:12 +0200
From: wolzstefan@....de
To: linux-kernel@...r.kernel.org
Cc: sudipm.mukherjee@...il.com, teddy.wang@...iconmotion.com,
gregkh@...uxfoundation.org, linux-fbdev@...r.kernel.org,
devel@...verdev.osuosl.org, linux-kernel@...cs.fau.de,
Stefan Wolz <wolzstefan@....de>,
Christian Halder <christian.halder@....de>,
Sebastian Handwerker <sebastian.handwerker@...teo.de>
Subject: [PATCH 3/4] sm750fb/sm750_hw.c: fixed comments
From: Stefan Wolz <wolzstefan@....de>
Fixed multiline comments to meet style standards,
fixed typos and split comment lines over 80 characters.
Signed-off-by: Stefan Wolz <wolzstefan@....de>
Signed-off-by: Christian Halder <christian.halder@....de>
Signed-off-by: Sebastian Handwerker <sebastian.handwerker@...teo.de>
---
drivers/staging/sm750fb/sm750_hw.c | 48 +++++++++++++++++++++-----------------
1 file changed, 26 insertions(+), 22 deletions(-)
diff --git a/drivers/staging/sm750fb/sm750_hw.c b/drivers/staging/sm750fb/sm750_hw.c
index 052f113..f2ed82e 100644
--- a/drivers/staging/sm750fb/sm750_hw.c
+++ b/drivers/staging/sm750fb/sm750_hw.c
@@ -35,17 +35,17 @@ int hw_sm750_map(struct sm750_dev *sm750_dev, struct pci_dev *pdev)
pr_info("mmio phyAddr = %lx\n", sm750_dev->vidreg_start);
/* reserve the vidreg space of smi adaptor
- * if you do this, u need to add release region code
+ * if you do this, you need to add release region code
* in lynxfb_remove, or memory will not be mapped again
* successfully
- * */
+ */
ret = pci_request_region(pdev, 1, "sm750fb");
if (ret) {
pr_err("Can not request PCI regions.\n");
goto exit;
}
- /* now map mmio and vidmem*/
+ /* now map mmio and vidmem */
sm750_dev->pvReg = ioremap_nocache(sm750_dev->vidreg_start,
sm750_dev->vidreg_size);
if (!sm750_dev->pvReg) {
@@ -63,10 +63,10 @@ int hw_sm750_map(struct sm750_dev *sm750_dev, struct pci_dev *pdev)
sm750_dev->vidmem_start = pci_resource_start(pdev, 0);
/* don't use pdev_resource[x].end - resource[x].start to
- * calculate the resource size,its only the maximum available
- * size but not the actual size,use
+ * calculate the resource size, it's only the maximum available
+ * size but not the actual size, using
* @ddk750_getVMSize function can be safe.
- * */
+ */
sm750_dev->vidmem_size = ddk750_getVMSize();
pr_info("video memory phyAddr = %lx, size = %u bytes\n",
sm750_dev->vidmem_start, sm750_dev->vidmem_size);
@@ -101,7 +101,7 @@ int hw_sm750_inithw(struct sm750_dev *sm750_dev, struct pci_dev *pdev)
parm->master_clk = parm->chip_clk / 3;
ddk750_initHw((initchip_param_t *)&sm750_dev->initParm);
- /* for sm718,open pci burst */
+ /* for sm718, open pci burst */
if (sm750_dev->devid == 0x718) {
POKE32(SYSTEM_CTRL,
PEEK32(SYSTEM_CTRL) | SYSTEM_CTRL_PCI_BURST);
@@ -109,7 +109,7 @@ int hw_sm750_inithw(struct sm750_dev *sm750_dev, struct pci_dev *pdev)
if (getChipType() != SM750LE) {
unsigned int val;
- /* does user need CRT ?*/
+ /* does user need CRT? */
if (sm750_dev->nocrt) {
POKE32(MISC_CTRL,
PEEK32(MISC_CTRL) | MISC_CTRL_DAC_POWER_OFF);
@@ -141,19 +141,21 @@ int hw_sm750_inithw(struct sm750_dev *sm750_dev, struct pci_dev *pdev)
}
POKE32(PANEL_DISPLAY_CTRL, val);
} else {
- /* for 750LE ,no DVI chip initialization makes Monitor no signal */
- /* Set up GPIO for software I2C to program DVI chip in the
- Xilinx SP605 board, in order to have video signal.
+ /* for 750LE, no DVI chip initialization
+ * makes Monitor no signal
+ *
+ * Set up GPIO for software I2C to program DVI chip in the
+ * Xilinx SP605 board, in order to have video signal.
*/
sm750_sw_i2c_init(0, 1);
/* Customer may NOT use CH7301 DVI chip, which has to be
- initialized differently.
- */
+ * initialized differently.
+ */
if (sm750_sw_i2c_read_reg(0xec, 0x4a) == 0x95) {
/* The following register values for CH7301 are from
- Chrontel app note and our experiment.
- */
+ * Chrontel app note and our experiment.
+ */
pr_info("yes,CH7301 DVI chip found\n");
sm750_sw_i2c_write_reg(0xec, 0x1d, 0x16);
sm750_sw_i2c_write_reg(0xec, 0x21, 0x9);
@@ -198,7 +200,7 @@ int hw_sm750_output_setMode(struct lynxfb_output *output,
}
ddk750_setLogicalDispOut(dispSet);
} else {
- /* just open DISPLAY_CONTROL_750LE register bit 3:0*/
+ /* just open DISPLAY_CONTROL_750LE register bit 3:0 */
u32 reg;
reg = PEEK32(DISPLAY_CONTROL_750LE);
@@ -234,9 +236,7 @@ int hw_sm750_crtc_checkMode(struct lynxfb_crtc *crtc, struct fb_var_screeninfo *
return 0;
}
-/*
- set the controller's mode for @crtc charged with @var and @fix parameters
-*/
+/* set the controller's mode for @crtc charged with @var and @fix parameters */
int hw_sm750_crtc_setMode(struct lynxfb_crtc *crtc,
struct fb_var_screeninfo *var,
struct fb_fix_screeninfo *fix)
@@ -300,12 +300,14 @@ int hw_sm750_crtc_setMode(struct lynxfb_crtc *crtc,
}
if (crtc->channel != sm750_secondary) {
- /* set pitch, offset ,width,start address ,etc... */
+ /* set pitch, offset, width, start address, etc... */
POKE32(PANEL_FB_ADDRESS,
crtc->oScreen & PANEL_FB_ADDRESS_ADDRESS_MASK);
reg = var->xres * (var->bits_per_pixel >> 3);
- /* crtc->channel is not equal to par->index on numeric,be aware of that */
+ /* crtc->channel is not equal to par->index on numeric,
+ * be aware of that
+ */
reg = ALIGN(reg, crtc->line_pad);
reg = (reg << PANEL_FB_WIDTH_WIDTH_SHIFT) &
PANEL_FB_WIDTH_WIDTH_MASK;
@@ -337,7 +339,9 @@ int hw_sm750_crtc_setMode(struct lynxfb_crtc *crtc,
/* not implemented now */
POKE32(CRT_FB_ADDRESS, crtc->oScreen);
reg = var->xres * (var->bits_per_pixel >> 3);
- /* crtc->channel is not equal to par->index on numeric,be aware of that */
+ /* crtc->channel is not equal to par->index on numeric,
+ * be aware of that
+ */
reg = ALIGN(reg, crtc->line_pad) << CRT_FB_WIDTH_WIDTH_SHIFT;
reg &= CRT_FB_WIDTH_WIDTH_MASK;
reg |= (fix->line_length & CRT_FB_WIDTH_OFFSET_MASK);
--
1.9.1
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