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Staging: fbtft: fb_pcd8544: Fix comments style

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This patch fixes the following errors by refactoring the comments'
style:

WARNING: line over 80 characters
ERROR: code indent should use tabs where possible

Signed-off-by: Cláudio Maia <crrm@isep.ipp.pt>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Cláudio Maia 2015-03-20 16:31:46 +00:00 committed by Greg Kroah-Hartman
parent 14cf23b155
commit 4178549e4c
1 changed files with 54 additions and 43 deletions
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97
drivers/staging/fbtft/fb_pcd8544.c
View file

@ -34,7 +34,7 @@
#define WIDTH 84
#define HEIGHT 48
#define TXBUFLEN (84*6)
#define DEFAULT_GAMMA "40" /* gamma is used to control contrast in this driver */
#define DEFAULT_GAMMA "40" /* gamma controls the contrast in this driver */
static unsigned tc;
module_param(tc, uint, 0);
@ -51,43 +51,50 @@ static int init_display(struct fbtft_par *par)
par->fbtftops.reset(par);
/* Function set */
write_reg(par, 0x21); /* 5:1 1
2:0 PD - Powerdown control: chip is active
1:0 V - Entry mode: horizontal addressing
0:1 H - Extended instruction set control: extended
*/
/* Function set
*
* 5:1 1
* 2:0 PD - Powerdown control: chip is active
* 1:0 V - Entry mode: horizontal addressing
* 0:1 H - Extended instruction set control: extended
*/
write_reg(par, 0x21);
/* H=1 Temperature control */
write_reg(par, 0x04 | (tc & 0x3)); /*
2:1 1
1:x TC1 - Temperature Coefficient: 0x10
0:x TC0
*/
/* H=1 Temperature control
*
* 2:1 1
* 1:x TC1 - Temperature Coefficient: 0x10
* 0:x TC0
*/
write_reg(par, 0x04 | (tc & 0x3));
/* H=1 Bias system */
write_reg(par, 0x10 | (bs & 0x7)); /*
4:1 1
3:0 0
2:x BS2 - Bias System
1:x BS1
0:x BS0
*/
/* H=1 Bias system
*
* 4:1 1
* 3:0 0
* 2:x BS2 - Bias System
* 1:x BS1
* 0:x BS0
*/
write_reg(par, 0x10 | (bs & 0x7));
/* Function set */
write_reg(par, 0x22); /* 5:1 1
2:0 PD - Powerdown control: chip is active
1:1 V - Entry mode: vertical addressing
0:0 H - Extended instruction set control: basic
*/
/* Function set
*
* 5:1 1
* 2:0 PD - Powerdown control: chip is active
* 1:1 V - Entry mode: vertical addressing
* 0:0 H - Extended instruction set control: basic
*/
write_reg(par, 0x22);
/* H=0 Display control */
write_reg(par, 0x08 | 4); /*
3:1 1
2:1 D - DE: 10=normal mode
1:0 0
0:0 E
*/
/* H=0 Display control
*
* 3:1 1
* 2:1 D - DE: 10=normal mode
* 1:0 0
* 0:0 E
*/
write_reg(par, 0x08 | 4);
return 0;
}
@ -97,16 +104,20 @@ static void set_addr_win(struct fbtft_par *par, int xs, int ys, int xe, int ye)
fbtft_par_dbg(DEBUG_SET_ADDR_WIN, par, "%s(xs=%d, ys=%d, xe=%d, ye=%d)\n",
__func__, xs, ys, xe, ye);
/* H=0 Set X address of RAM */
write_reg(par, 0x80); /* 7:1 1
6-0: X[6:0] - 0x00
*/
/* H=0 Set X address of RAM
*
* 7:1 1
* 6-0: X[6:0] - 0x00
*/
write_reg(par, 0x80);
/* H=0 Set Y address of RAM */
write_reg(par, 0x40); /* 7:0 0
6:1 1
2-0: Y[2:0] - 0x0
*/
/* H=0 Set Y address of RAM
*
* 7:0 0
* 6:1 1
* 2-0: Y[2:0] - 0x0
*/
write_reg(par, 0x40);
}
static int write_vmem(struct fbtft_par *par, size_t offset, size_t len)