A-Team_Digital_Solutions/android_kernel_motorola_sm6375
Watch
2
0
Fork
You've already forked android_kernel_motorola_sm6375
 0
mirror of https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git synced 2026-10-30 19:51:31 -04:00
Code Issues Projects Releases Packages Wiki Activity

broadsheetfb: add MMIO hooks

Browse source 
Allow boards with GP-MMIO controllers to provide hooks to broadsheetfb in
order to offload cmd/data writes and data reads instead of relying only on
host based GPIO wiggling.

Signed-off-by: Jaya Kumar <[email protected]>
Cc: Geert Uytterhoeven <[email protected]>
Cc: Krzysztof Helt <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Jaya Kumar 2010-03-10 15:21:41 -08:00 • committed by Linus Torvalds
commit 2afb189817
2 changed files with 107 additions and 20 deletions
Download patch file Download diff file Expand all files Collapse all files

110
drivers/video/broadsheetfb.c
View file

@ -115,30 +115,30 @@ static struct fb_var_screeninfo broadsheetfb_var __devinitdata = {
};
/* main broadsheetfb functions */
static void broadsheet_issue_data(struct broadsheetfb_par *par, u16 data)
static void broadsheet_gpio_issue_data(struct broadsheetfb_par *par, u16 data)
{
par->board->set_ctl(par, BS_WR, 0);
par->board->set_hdb(par, data);
par->board->set_ctl(par, BS_WR, 1);
}
static void broadsheet_issue_cmd(struct broadsheetfb_par *par, u16 data)
static void broadsheet_gpio_issue_cmd(struct broadsheetfb_par *par, u16 data)
{
par->board->set_ctl(par, BS_DC, 0);
broadsheet_issue_data(par, data);
broadsheet_gpio_issue_data(par, data);
}
static void broadsheet_send_command(struct broadsheetfb_par *par, u16 data)
static void broadsheet_gpio_send_command(struct broadsheetfb_par *par, u16 data)
{
par->board->wait_for_rdy(par);
par->board->set_ctl(par, BS_CS, 0);
broadsheet_issue_cmd(par, data);
broadsheet_gpio_issue_cmd(par, data);
par->board->set_ctl(par, BS_DC, 1);
par->board->set_ctl(par, BS_CS, 1);
}
static void broadsheet_send_cmdargs(struct broadsheetfb_par *par, u16 cmd,
static void broadsheet_gpio_send_cmdargs(struct broadsheetfb_par *par, u16 cmd,
int argc, u16 *argv)
{
int i;
@ -146,15 +146,43 @@ static void broadsheet_send_cmdargs(struct broadsheetfb_par *par, u16 cmd,
par->board->wait_for_rdy(par);
par->board->set_ctl(par, BS_CS, 0);
broadsheet_issue_cmd(par, cmd);
broadsheet_gpio_issue_cmd(par, cmd);
par->board->set_ctl(par, BS_DC, 1);
for (i = 0; i < argc; i++)
broadsheet_issue_data(par, argv[i]);
broadsheet_gpio_issue_data(par, argv[i]);
par->board->set_ctl(par, BS_CS, 1);
}
static void broadsheet_burst_write(struct broadsheetfb_par *par, int size,
static void broadsheet_mmio_send_cmdargs(struct broadsheetfb_par *par, u16 cmd,
int argc, u16 *argv)
{
int i;
par->board->mmio_write(par, BS_MMIO_CMD, cmd);
for (i = 0; i < argc; i++)
par->board->mmio_write(par, BS_MMIO_DATA, argv[i]);
}
static void broadsheet_send_command(struct broadsheetfb_par *par, u16 data)
{
if (par->board->mmio_write)
par->board->mmio_write(par, BS_MMIO_CMD, data);
else
broadsheet_gpio_send_command(par, data);
}
static void broadsheet_send_cmdargs(struct broadsheetfb_par *par, u16 cmd,
int argc, u16 *argv)
{
if (par->board->mmio_write)
broadsheet_mmio_send_cmdargs(par, cmd, argc, argv);
else
broadsheet_gpio_send_cmdargs(par, cmd, argc, argv);
}
static void broadsheet_gpio_burst_write(struct broadsheetfb_par *par, int size,
u16 *data)
{
int i;
@ -174,7 +202,30 @@ static void broadsheet_burst_write(struct broadsheetfb_par *par, int size,
par->board->set_ctl(par, BS_CS, 1);
}
static u16 broadsheet_get_data(struct broadsheetfb_par *par)
static void broadsheet_mmio_burst_write(struct broadsheetfb_par *par, int size,
u16 *data)
{
int i;
u16 tmp;
for (i = 0; i < size; i++) {
tmp = (data[i] & 0x0F) << 4;
tmp |= (data[i] & 0x0F00) << 4;
par->board->mmio_write(par, BS_MMIO_DATA, tmp);
}
}
static void broadsheet_burst_write(struct broadsheetfb_par *par, int size,
u16 *data)
{
if (par->board->mmio_write)
broadsheet_mmio_burst_write(par, size, data);
else
broadsheet_gpio_burst_write(par, size, data);
}
static u16 broadsheet_gpio_get_data(struct broadsheetfb_par *par)
{
u16 res;
/* wait for ready to go hi. (lo is busy) */
@ -194,7 +245,16 @@ static u16 broadsheet_get_data(struct broadsheetfb_par *par)
return res;
}
static void broadsheet_write_reg(struct broadsheetfb_par *par, u16 reg,
static u16 broadsheet_get_data(struct broadsheetfb_par *par)
{
if (par->board->mmio_read)
return par->board->mmio_read(par);
else
return broadsheet_gpio_get_data(par);
}
static void broadsheet_gpio_write_reg(struct broadsheetfb_par *par, u16 reg,
u16 data)
{
/* wait for ready to go hi. (lo is busy) */
@ -203,16 +263,34 @@ static void broadsheet_write_reg(struct broadsheetfb_par *par, u16 reg,
/* cs lo, dc lo for cmd, we lo for each data, db as usual */
par->board->set_ctl(par, BS_CS, 0);
broadsheet_issue_cmd(par, BS_CMD_WR_REG);
broadsheet_gpio_issue_cmd(par, BS_CMD_WR_REG);
par->board->set_ctl(par, BS_DC, 1);
broadsheet_issue_data(par, reg);
broadsheet_issue_data(par, data);
broadsheet_gpio_issue_data(par, reg);
broadsheet_gpio_issue_data(par, data);
par->board->set_ctl(par, BS_CS, 1);
}
static void broadsheet_mmio_write_reg(struct broadsheetfb_par *par, u16 reg,
u16 data)
{
par->board->mmio_write(par, BS_MMIO_CMD, BS_CMD_WR_REG);
par->board->mmio_write(par, BS_MMIO_DATA, reg);
par->board->mmio_write(par, BS_MMIO_DATA, data);
}
static void broadsheet_write_reg(struct broadsheetfb_par *par, u16 reg,
u16 data)
{
if (par->board->mmio_write)
broadsheet_mmio_write_reg(par, reg, data);
else
broadsheet_gpio_write_reg(par, reg, data);
}
static void broadsheet_write_reg32(struct broadsheetfb_par *par, u16 reg,
u32 data)
{
@ -223,8 +301,8 @@ static void broadsheet_write_reg32(struct broadsheetfb_par *par, u16 reg,
static u16 broadsheet_read_reg(struct broadsheetfb_par *par, u16 reg)
{
broadsheet_send_command(par, reg);
msleep(100);
broadsheet_send_cmdargs(par, BS_CMD_RD_REG, 1, &reg);
par->board->wait_for_rdy(par);
return broadsheet_get_data(par);
}