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linux-next/drivers/video/omap2/dss/rfbi.c
Archit Taneja 81b87f515f OMAPDSS: outputs: Create and register output instances 
Add output structs to output driver's private data. Register output instances by
having an init function in the probes of the platform device drivers for
different outputs. The *_init_output for each output registers the output and
fill up the output's plaform device, type and id fields. The *_uninit_output
functions unregister the output.

In the probe of each interface driver, the output entities are initialized
before the *_probe_pdata() functions intentionally. This is done to ensure that
the output entity is prepared before the panels connected to the output are
registered. We need the output entities to be ready because OMAPDSS will try
to make connections between overlays, managers, outputs and devices during the
panel's probe.

Signed-off-by: Archit Taneja <archit@ti.com>
2012-09-26 16:30:49 +05:30

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/*
* linux/drivers/video/omap2/dss/rfbi.c
*
* Copyright (C) 2009 Nokia Corporation
* Author: Tomi Valkeinen <tomi.valkeinen@nokia.com>
*
* Some code and ideas taken from drivers/video/omap/ driver
* by Imre Deak.
*
* 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.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program. If not, see <http://www.gnu.org/licenses/>.
*/
#define DSS_SUBSYS_NAME "RFBI"
#include <linux/kernel.h>
#include <linux/dma-mapping.h>
#include <linux/export.h>
#include <linux/vmalloc.h>
#include <linux/clk.h>
#include <linux/io.h>
#include <linux/delay.h>
#include <linux/kfifo.h>
#include <linux/ktime.h>
#include <linux/hrtimer.h>
#include <linux/seq_file.h>
#include <linux/semaphore.h>
#include <linux/platform_device.h>
#include <linux/pm_runtime.h>
#include <video/omapdss.h>
#include "dss.h"
struct rfbi_reg { u16 idx; };
#define RFBI_REG(idx) ((const struct rfbi_reg) { idx })
#define RFBI_REVISION RFBI_REG(0x0000)
#define RFBI_SYSCONFIG RFBI_REG(0x0010)
#define RFBI_SYSSTATUS RFBI_REG(0x0014)
#define RFBI_CONTROL RFBI_REG(0x0040)
#define RFBI_PIXEL_CNT RFBI_REG(0x0044)
#define RFBI_LINE_NUMBER RFBI_REG(0x0048)
#define RFBI_CMD RFBI_REG(0x004c)
#define RFBI_PARAM RFBI_REG(0x0050)
#define RFBI_DATA RFBI_REG(0x0054)
#define RFBI_READ RFBI_REG(0x0058)
#define RFBI_STATUS RFBI_REG(0x005c)
#define RFBI_CONFIG(n) RFBI_REG(0x0060 + (n)*0x18)
#define RFBI_ONOFF_TIME(n) RFBI_REG(0x0064 + (n)*0x18)
#define RFBI_CYCLE_TIME(n) RFBI_REG(0x0068 + (n)*0x18)
#define RFBI_DATA_CYCLE1(n) RFBI_REG(0x006c + (n)*0x18)
#define RFBI_DATA_CYCLE2(n) RFBI_REG(0x0070 + (n)*0x18)
#define RFBI_DATA_CYCLE3(n) RFBI_REG(0x0074 + (n)*0x18)
#define RFBI_VSYNC_WIDTH RFBI_REG(0x0090)
#define RFBI_HSYNC_WIDTH RFBI_REG(0x0094)
#define REG_FLD_MOD(idx, val, start, end) \
rfbi_write_reg(idx, FLD_MOD(rfbi_read_reg(idx), val, start, end))
enum omap_rfbi_cycleformat {
OMAP_DSS_RFBI_CYCLEFORMAT_1_1 = 0,
OMAP_DSS_RFBI_CYCLEFORMAT_2_1 = 1,
OMAP_DSS_RFBI_CYCLEFORMAT_3_1 = 2,
OMAP_DSS_RFBI_CYCLEFORMAT_3_2 = 3,
};
enum omap_rfbi_datatype {
OMAP_DSS_RFBI_DATATYPE_12 = 0,
OMAP_DSS_RFBI_DATATYPE_16 = 1,
OMAP_DSS_RFBI_DATATYPE_18 = 2,
OMAP_DSS_RFBI_DATATYPE_24 = 3,
};
enum omap_rfbi_parallelmode {
OMAP_DSS_RFBI_PARALLELMODE_8 = 0,
OMAP_DSS_RFBI_PARALLELMODE_9 = 1,
OMAP_DSS_RFBI_PARALLELMODE_12 = 2,
OMAP_DSS_RFBI_PARALLELMODE_16 = 3,
};
static int rfbi_convert_timings(struct rfbi_timings *t);
static void rfbi_get_clk_info(u32 *clk_period, u32 *max_clk_div);
static struct {
struct platform_device *pdev;
void __iomem *base;
unsigned long l4_khz;
enum omap_rfbi_datatype datatype;
enum omap_rfbi_parallelmode parallelmode;
enum omap_rfbi_te_mode te_mode;
int te_enabled;
void (*framedone_callback)(void *data);
void *framedone_callback_data;
struct omap_dss_device *dssdev[2];
struct semaphore bus_lock;
struct omap_video_timings timings;
int pixel_size;
int data_lines;
struct rfbi_timings intf_timings;
struct omap_dss_output output;
} rfbi;
static inline void rfbi_write_reg(const struct rfbi_reg idx, u32 val)
{
__raw_writel(val, rfbi.base + idx.idx);
}
static inline u32 rfbi_read_reg(const struct rfbi_reg idx)
{
return __raw_readl(rfbi.base + idx.idx);
}
static int rfbi_runtime_get(void)
{
int r;
DSSDBG("rfbi_runtime_get\n");
r = pm_runtime_get_sync(&rfbi.pdev->dev);
WARN_ON(r < 0);
return r < 0 ? r : 0;
}
static void rfbi_runtime_put(void)
{
int r;
DSSDBG("rfbi_runtime_put\n");
r = pm_runtime_put_sync(&rfbi.pdev->dev);
WARN_ON(r < 0 && r != -ENOSYS);
}
void rfbi_bus_lock(void)
{
down(&rfbi.bus_lock);
}
EXPORT_SYMBOL(rfbi_bus_lock);
void rfbi_bus_unlock(void)
{
up(&rfbi.bus_lock);
}
EXPORT_SYMBOL(rfbi_bus_unlock);
void omap_rfbi_write_command(const void *buf, u32 len)
{
switch (rfbi.parallelmode) {
case OMAP_DSS_RFBI_PARALLELMODE_8:
{
const u8 *b = buf;
for (; len; len--)
rfbi_write_reg(RFBI_CMD, *b++);
break;
}
case OMAP_DSS_RFBI_PARALLELMODE_16:
{
const u16 *w = buf;
BUG_ON(len & 1);
for (; len; len -= 2)
rfbi_write_reg(RFBI_CMD, *w++);
break;
}
case OMAP_DSS_RFBI_PARALLELMODE_9:
case OMAP_DSS_RFBI_PARALLELMODE_12:
default:
BUG();
}
}
EXPORT_SYMBOL(omap_rfbi_write_command);
void omap_rfbi_read_data(void *buf, u32 len)
{
switch (rfbi.parallelmode) {
case OMAP_DSS_RFBI_PARALLELMODE_8:
{
u8 *b = buf;
for (; len; len--) {
rfbi_write_reg(RFBI_READ, 0);
*b++ = rfbi_read_reg(RFBI_READ);
}
break;
}
case OMAP_DSS_RFBI_PARALLELMODE_16:
{
u16 *w = buf;
BUG_ON(len & ~1);
for (; len; len -= 2) {
rfbi_write_reg(RFBI_READ, 0);
*w++ = rfbi_read_reg(RFBI_READ);
}
break;
}
case OMAP_DSS_RFBI_PARALLELMODE_9:
case OMAP_DSS_RFBI_PARALLELMODE_12:
default:
BUG();
}
}
EXPORT_SYMBOL(omap_rfbi_read_data);
void omap_rfbi_write_data(const void *buf, u32 len)
{
switch (rfbi.parallelmode) {
case OMAP_DSS_RFBI_PARALLELMODE_8:
{
const u8 *b = buf;
for (; len; len--)
rfbi_write_reg(RFBI_PARAM, *b++);
break;
}
case OMAP_DSS_RFBI_PARALLELMODE_16:
{
const u16 *w = buf;
BUG_ON(len & 1);
for (; len; len -= 2)
rfbi_write_reg(RFBI_PARAM, *w++);
break;
}
case OMAP_DSS_RFBI_PARALLELMODE_9:
case OMAP_DSS_RFBI_PARALLELMODE_12:
default:
BUG();
}
}
EXPORT_SYMBOL(omap_rfbi_write_data);
void omap_rfbi_write_pixels(const void __iomem *buf, int scr_width,
u16 x, u16 y,
u16 w, u16 h)
{
int start_offset = scr_width * y + x;
int horiz_offset = scr_width - w;
int i;
if (rfbi.datatype == OMAP_DSS_RFBI_DATATYPE_16 &&
rfbi.parallelmode == OMAP_DSS_RFBI_PARALLELMODE_8) {
const u16 __iomem *pd = buf;
pd += start_offset;
for (; h; --h) {
for (i = 0; i < w; ++i) {
const u8 __iomem *b = (const u8 __iomem *)pd;
rfbi_write_reg(RFBI_PARAM, __raw_readb(b+1));
rfbi_write_reg(RFBI_PARAM, __raw_readb(b+0));
++pd;
}
pd += horiz_offset;
}
} else if (rfbi.datatype == OMAP_DSS_RFBI_DATATYPE_24 &&
rfbi.parallelmode == OMAP_DSS_RFBI_PARALLELMODE_8) {
const u32 __iomem *pd = buf;
pd += start_offset;
for (; h; --h) {
for (i = 0; i < w; ++i) {
const u8 __iomem *b = (const u8 __iomem *)pd;
rfbi_write_reg(RFBI_PARAM, __raw_readb(b+2));
rfbi_write_reg(RFBI_PARAM, __raw_readb(b+1));
rfbi_write_reg(RFBI_PARAM, __raw_readb(b+0));
++pd;
}
pd += horiz_offset;
}
} else if (rfbi.datatype == OMAP_DSS_RFBI_DATATYPE_16 &&
rfbi.parallelmode == OMAP_DSS_RFBI_PARALLELMODE_16) {
const u16 __iomem *pd = buf;
pd += start_offset;
for (; h; --h) {
for (i = 0; i < w; ++i) {
rfbi_write_reg(RFBI_PARAM, __raw_readw(pd));
++pd;
}
pd += horiz_offset;
}
} else {
BUG();
}
}
EXPORT_SYMBOL(omap_rfbi_write_pixels);
static int rfbi_transfer_area(struct omap_dss_device *dssdev,
void (*callback)(void *data), void *data)
{
u32 l;
int r;
u16 width = rfbi.timings.x_res;
u16 height = rfbi.timings.y_res;
/*BUG_ON(callback == 0);*/
BUG_ON(rfbi.framedone_callback != NULL);
DSSDBG("rfbi_transfer_area %dx%d\n", width, height);
dss_mgr_set_timings(dssdev->manager, &rfbi.timings);
r = dss_mgr_enable(dssdev->manager);
if (r)
return r;
rfbi.framedone_callback = callback;
rfbi.framedone_callback_data = data;
rfbi_write_reg(RFBI_PIXEL_CNT, width * height);
l = rfbi_read_reg(RFBI_CONTROL);
l = FLD_MOD(l, 1, 0, 0); /* enable */
if (!rfbi.te_enabled)
l = FLD_MOD(l, 1, 4, 4); /* ITE */
rfbi_write_reg(RFBI_CONTROL, l);
return 0;
}
static void framedone_callback(void *data, u32 mask)
{
void (*callback)(void *data);
DSSDBG("FRAMEDONE\n");
REG_FLD_MOD(RFBI_CONTROL, 0, 0, 0);
callback = rfbi.framedone_callback;
rfbi.framedone_callback = NULL;
if (callback != NULL)
callback(rfbi.framedone_callback_data);
}
#if 1 /* VERBOSE */
static void rfbi_print_timings(void)
{
u32 l;
u32 time;
l = rfbi_read_reg(RFBI_CONFIG(0));
time = 1000000000 / rfbi.l4_khz;
if (l & (1 << 4))
time *= 2;
DSSDBG("Tick time %u ps\n", time);
l = rfbi_read_reg(RFBI_ONOFF_TIME(0));
DSSDBG("CSONTIME %d, CSOFFTIME %d, WEONTIME %d, WEOFFTIME %d, "
"REONTIME %d, REOFFTIME %d\n",
l & 0x0f, (l >> 4) & 0x3f, (l >> 10) & 0x0f, (l >> 14) & 0x3f,
(l >> 20) & 0x0f, (l >> 24) & 0x3f);
l = rfbi_read_reg(RFBI_CYCLE_TIME(0));
DSSDBG("WECYCLETIME %d, RECYCLETIME %d, CSPULSEWIDTH %d, "
"ACCESSTIME %d\n",
(l & 0x3f), (l >> 6) & 0x3f, (l >> 12) & 0x3f,
(l >> 22) & 0x3f);
}
#else
static void rfbi_print_timings(void) {}
#endif
static u32 extif_clk_period;
static inline unsigned long round_to_extif_ticks(unsigned long ps, int div)
{
int bus_tick = extif_clk_period * div;
return (ps + bus_tick - 1) / bus_tick * bus_tick;
}
static int calc_reg_timing(struct rfbi_timings *t, int div)
{
t->clk_div = div;
t->cs_on_time = round_to_extif_ticks(t->cs_on_time, div);
t->we_on_time = round_to_extif_ticks(t->we_on_time, div);
t->we_off_time = round_to_extif_ticks(t->we_off_time, div);
t->we_cycle_time = round_to_extif_ticks(t->we_cycle_time, div);
t->re_on_time = round_to_extif_ticks(t->re_on_time, div);
t->re_off_time = round_to_extif_ticks(t->re_off_time, div);
t->re_cycle_time = round_to_extif_ticks(t->re_cycle_time, div);
t->access_time = round_to_extif_ticks(t->access_time, div);
t->cs_off_time = round_to_extif_ticks(t->cs_off_time, div);
t->cs_pulse_width = round_to_extif_ticks(t->cs_pulse_width, div);
DSSDBG("[reg]cson %d csoff %d reon %d reoff %d\n",
t->cs_on_time, t->cs_off_time, t->re_on_time, t->re_off_time);
DSSDBG("[reg]weon %d weoff %d recyc %d wecyc %d\n",
t->we_on_time, t->we_off_time, t->re_cycle_time,
t->we_cycle_time);
DSSDBG("[reg]rdaccess %d cspulse %d\n",
t->access_time, t->cs_pulse_width);
return rfbi_convert_timings(t);
}
static int calc_extif_timings(struct rfbi_timings *t)
{
u32 max_clk_div;
int div;
rfbi_get_clk_info(&extif_clk_period, &max_clk_div);
for (div = 1; div <= max_clk_div; div++) {
if (calc_reg_timing(t, div) == 0)
break;
}
if (div <= max_clk_div)
return 0;
DSSERR("can't setup timings\n");
return -1;
}
static void rfbi_set_timings(int rfbi_module, struct rfbi_timings *t)
{
int r;
if (!t->converted) {
r = calc_extif_timings(t);
if (r < 0)
DSSERR("Failed to calc timings\n");
}
BUG_ON(!t->converted);
rfbi_write_reg(RFBI_ONOFF_TIME(rfbi_module), t->tim[0]);
rfbi_write_reg(RFBI_CYCLE_TIME(rfbi_module), t->tim[1]);
/* TIMEGRANULARITY */
REG_FLD_MOD(RFBI_CONFIG(rfbi_module),
(t->tim[2] ? 1 : 0), 4, 4);
rfbi_print_timings();
}
static int ps_to_rfbi_ticks(int time, int div)
{
unsigned long tick_ps;
int ret;
/* Calculate in picosecs to yield more exact results */
tick_ps = 1000000000 / (rfbi.l4_khz) * div;
ret = (time + tick_ps - 1) / tick_ps;
return ret;
}
static void rfbi_get_clk_info(u32 *clk_period, u32 *max_clk_div)
{
*clk_period = 1000000000 / rfbi.l4_khz;
*max_clk_div = 2;
}
static int rfbi_convert_timings(struct rfbi_timings *t)
{
u32 l;
int reon, reoff, weon, weoff, cson, csoff, cs_pulse;
int actim, recyc, wecyc;
int div = t->clk_div;
if (div <= 0 || div > 2)
return -1;
/* Make sure that after conversion it still holds that:
* weoff > weon, reoff > reon, recyc >= reoff, wecyc >= weoff,
* csoff > cson, csoff >= max(weoff, reoff), actim > reon
*/
weon = ps_to_rfbi_ticks(t->we_on_time, div);
weoff = ps_to_rfbi_ticks(t->we_off_time, div);
if (weoff <= weon)
weoff = weon + 1;
if (weon > 0x0f)
return -1;
if (weoff > 0x3f)
return -1;
reon = ps_to_rfbi_ticks(t->re_on_time, div);
reoff = ps_to_rfbi_ticks(t->re_off_time, div);
if (reoff <= reon)
reoff = reon + 1;
if (reon > 0x0f)
return -1;
if (reoff > 0x3f)
return -1;
cson = ps_to_rfbi_ticks(t->cs_on_time, div);
csoff = ps_to_rfbi_ticks(t->cs_off_time, div);
if (csoff <= cson)
csoff = cson + 1;
if (csoff < max(weoff, reoff))
csoff = max(weoff, reoff);
if (cson > 0x0f)
return -1;
if (csoff > 0x3f)
return -1;
l = cson;
l |= csoff << 4;
l |= weon << 10;
l |= weoff << 14;
l |= reon << 20;
l |= reoff << 24;
t->tim[0] = l;
actim = ps_to_rfbi_ticks(t->access_time, div);
if (actim <= reon)
actim = reon + 1;
if (actim > 0x3f)
return -1;
wecyc = ps_to_rfbi_ticks(t->we_cycle_time, div);
if (wecyc < weoff)
wecyc = weoff;
if (wecyc > 0x3f)
return -1;
recyc = ps_to_rfbi_ticks(t->re_cycle_time, div);
if (recyc < reoff)
recyc = reoff;
if (recyc > 0x3f)
return -1;
cs_pulse = ps_to_rfbi_ticks(t->cs_pulse_width, div);
if (cs_pulse > 0x3f)
return -1;
l = wecyc;
l |= recyc << 6;
l |= cs_pulse << 12;
l |= actim << 22;
t->tim[1] = l;
t->tim[2] = div - 1;
t->converted = 1;
return 0;
}
/* xxx FIX module selection missing */
int omap_rfbi_setup_te(enum omap_rfbi_te_mode mode,
unsigned hs_pulse_time, unsigned vs_pulse_time,
int hs_pol_inv, int vs_pol_inv, int extif_div)
{
int hs, vs;
int min;
u32 l;
hs = ps_to_rfbi_ticks(hs_pulse_time, 1);
vs = ps_to_rfbi_ticks(vs_pulse_time, 1);
if (hs < 2)
return -EDOM;
if (mode == OMAP_DSS_RFBI_TE_MODE_2)
min = 2;
else /* OMAP_DSS_RFBI_TE_MODE_1 */
min = 4;
if (vs < min)
return -EDOM;
if (vs == hs)
return -EINVAL;
rfbi.te_mode = mode;
DSSDBG("setup_te: mode %d hs %d vs %d hs_inv %d vs_inv %d\n",
mode, hs, vs, hs_pol_inv, vs_pol_inv);
rfbi_write_reg(RFBI_HSYNC_WIDTH, hs);
rfbi_write_reg(RFBI_VSYNC_WIDTH, vs);
l = rfbi_read_reg(RFBI_CONFIG(0));
if (hs_pol_inv)
l &= ~(1 << 21);
else
l |= 1 << 21;
if (vs_pol_inv)
l &= ~(1 << 20);
else
l |= 1 << 20;
return 0;
}
EXPORT_SYMBOL(omap_rfbi_setup_te);
/* xxx FIX module selection missing */
int omap_rfbi_enable_te(bool enable, unsigned line)
{
u32 l;
DSSDBG("te %d line %d mode %d\n", enable, line, rfbi.te_mode);
if (line > (1 << 11) - 1)
return -EINVAL;
l = rfbi_read_reg(RFBI_CONFIG(0));
l &= ~(0x3 << 2);
if (enable) {
rfbi.te_enabled = 1;
l |= rfbi.te_mode << 2;
} else
rfbi.te_enabled = 0;
rfbi_write_reg(RFBI_CONFIG(0), l);
rfbi_write_reg(RFBI_LINE_NUMBER, line);
return 0;
}
EXPORT_SYMBOL(omap_rfbi_enable_te);
static int rfbi_configure(int rfbi_module, int bpp, int lines)
{
u32 l;
int cycle1 = 0, cycle2 = 0, cycle3 = 0;
enum omap_rfbi_cycleformat cycleformat;
enum omap_rfbi_datatype datatype;
enum omap_rfbi_parallelmode parallelmode;
switch (bpp) {
case 12:
datatype = OMAP_DSS_RFBI_DATATYPE_12;
break;
case 16:
datatype = OMAP_DSS_RFBI_DATATYPE_16;
break;
case 18:
datatype = OMAP_DSS_RFBI_DATATYPE_18;
break;
case 24:
datatype = OMAP_DSS_RFBI_DATATYPE_24;
break;
default:
BUG();
return 1;
}
rfbi.datatype = datatype;
switch (lines) {
case 8:
parallelmode = OMAP_DSS_RFBI_PARALLELMODE_8;
break;
case 9:
parallelmode = OMAP_DSS_RFBI_PARALLELMODE_9;
break;
case 12:
parallelmode = OMAP_DSS_RFBI_PARALLELMODE_12;
break;
case 16:
parallelmode = OMAP_DSS_RFBI_PARALLELMODE_16;
break;
default:
BUG();
return 1;
}
rfbi.parallelmode = parallelmode;
if ((bpp % lines) == 0) {
switch (bpp / lines) {
case 1:
cycleformat = OMAP_DSS_RFBI_CYCLEFORMAT_1_1;
break;
case 2:
cycleformat = OMAP_DSS_RFBI_CYCLEFORMAT_2_1;
break;
case 3:
cycleformat = OMAP_DSS_RFBI_CYCLEFORMAT_3_1;
break;
default:
BUG();
return 1;
}
} else if ((2 * bpp % lines) == 0) {
if ((2 * bpp / lines) == 3)
cycleformat = OMAP_DSS_RFBI_CYCLEFORMAT_3_2;
else {
BUG();
return 1;
}
} else {
BUG();
return 1;
}
switch (cycleformat) {
case OMAP_DSS_RFBI_CYCLEFORMAT_1_1:
cycle1 = lines;
break;
case OMAP_DSS_RFBI_CYCLEFORMAT_2_1:
cycle1 = lines;
cycle2 = lines;
break;
case OMAP_DSS_RFBI_CYCLEFORMAT_3_1:
cycle1 = lines;
cycle2 = lines;
cycle3 = lines;
break;
case OMAP_DSS_RFBI_CYCLEFORMAT_3_2:
cycle1 = lines;
cycle2 = (lines / 2) | ((lines / 2) << 16);
cycle3 = (lines << 16);
break;
}
REG_FLD_MOD(RFBI_CONTROL, 0, 3, 2); /* clear CS */
l = 0;
l |= FLD_VAL(parallelmode, 1, 0);
l |= FLD_VAL(0, 3, 2); /* TRIGGERMODE: ITE */
l |= FLD_VAL(0, 4, 4); /* TIMEGRANULARITY */
l |= FLD_VAL(datatype, 6, 5);
/* l |= FLD_VAL(2, 8, 7); */ /* L4FORMAT, 2pix/L4 */
l |= FLD_VAL(0, 8, 7); /* L4FORMAT, 1pix/L4 */
l |= FLD_VAL(cycleformat, 10, 9);
l |= FLD_VAL(0, 12, 11); /* UNUSEDBITS */
l |= FLD_VAL(0, 16, 16); /* A0POLARITY */
l |= FLD_VAL(0, 17, 17); /* REPOLARITY */
l |= FLD_VAL(0, 18, 18); /* WEPOLARITY */
l |= FLD_VAL(0, 19, 19); /* CSPOLARITY */
l |= FLD_VAL(1, 20, 20); /* TE_VSYNC_POLARITY */
l |= FLD_VAL(1, 21, 21); /* HSYNCPOLARITY */
rfbi_write_reg(RFBI_CONFIG(rfbi_module), l);
rfbi_write_reg(RFBI_DATA_CYCLE1(rfbi_module), cycle1);
rfbi_write_reg(RFBI_DATA_CYCLE2(rfbi_module), cycle2);
rfbi_write_reg(RFBI_DATA_CYCLE3(rfbi_module), cycle3);
l = rfbi_read_reg(RFBI_CONTROL);
l = FLD_MOD(l, rfbi_module+1, 3, 2); /* Select CSx */
l = FLD_MOD(l, 0, 1, 1); /* clear bypass */
rfbi_write_reg(RFBI_CONTROL, l);
DSSDBG("RFBI config: bpp %d, lines %d, cycles: 0x%x 0x%x 0x%x\n",
bpp, lines, cycle1, cycle2, cycle3);
return 0;
}
int omap_rfbi_configure(struct omap_dss_device *dssdev)
{
return rfbi_configure(dssdev->phy.rfbi.channel, rfbi.pixel_size,
rfbi.data_lines);
}
EXPORT_SYMBOL(omap_rfbi_configure);
int omap_rfbi_update(struct omap_dss_device *dssdev, void (*callback)(void *),
void *data)
{
return rfbi_transfer_area(dssdev, callback, data);
}
EXPORT_SYMBOL(omap_rfbi_update);
void omapdss_rfbi_set_size(struct omap_dss_device *dssdev, u16 w, u16 h)
{
rfbi.timings.x_res = w;
rfbi.timings.y_res = h;
}
EXPORT_SYMBOL(omapdss_rfbi_set_size);
void omapdss_rfbi_set_pixel_size(struct omap_dss_device *dssdev, int pixel_size)
{
rfbi.pixel_size = pixel_size;
}
EXPORT_SYMBOL(omapdss_rfbi_set_pixel_size);
void omapdss_rfbi_set_data_lines(struct omap_dss_device *dssdev, int data_lines)
{
rfbi.data_lines = data_lines;
}
EXPORT_SYMBOL(omapdss_rfbi_set_data_lines);
void omapdss_rfbi_set_interface_timings(struct omap_dss_device *dssdev,
struct rfbi_timings *timings)
{
rfbi.intf_timings = *timings;
}
EXPORT_SYMBOL(omapdss_rfbi_set_interface_timings);
static void rfbi_dump_regs(struct seq_file *s)
{
#define DUMPREG(r) seq_printf(s, "%-35s %08x\n", #r, rfbi_read_reg(r))
if (rfbi_runtime_get())
return;
DUMPREG(RFBI_REVISION);
DUMPREG(RFBI_SYSCONFIG);
DUMPREG(RFBI_SYSSTATUS);
DUMPREG(RFBI_CONTROL);
DUMPREG(RFBI_PIXEL_CNT);
DUMPREG(RFBI_LINE_NUMBER);
DUMPREG(RFBI_CMD);
DUMPREG(RFBI_PARAM);
DUMPREG(RFBI_DATA);
DUMPREG(RFBI_READ);
DUMPREG(RFBI_STATUS);
DUMPREG(RFBI_CONFIG(0));
DUMPREG(RFBI_ONOFF_TIME(0));
DUMPREG(RFBI_CYCLE_TIME(0));
DUMPREG(RFBI_DATA_CYCLE1(0));
DUMPREG(RFBI_DATA_CYCLE2(0));
DUMPREG(RFBI_DATA_CYCLE3(0));
DUMPREG(RFBI_CONFIG(1));
DUMPREG(RFBI_ONOFF_TIME(1));
DUMPREG(RFBI_CYCLE_TIME(1));
DUMPREG(RFBI_DATA_CYCLE1(1));
DUMPREG(RFBI_DATA_CYCLE2(1));
DUMPREG(RFBI_DATA_CYCLE3(1));
DUMPREG(RFBI_VSYNC_WIDTH);
DUMPREG(RFBI_HSYNC_WIDTH);
rfbi_runtime_put();
#undef DUMPREG
}
static void rfbi_config_lcd_manager(struct omap_dss_device *dssdev)
{
struct dss_lcd_mgr_config mgr_config;
mgr_config.io_pad_mode = DSS_IO_PAD_MODE_RFBI;
mgr_config.stallmode = true;
/* Do we need fifohandcheck for RFBI? */
mgr_config.fifohandcheck = false;
mgr_config.video_port_width = rfbi.pixel_size;
mgr_config.lcden_sig_polarity = 0;
dss_mgr_set_lcd_config(dssdev->manager, &mgr_config);
/*
* Set rfbi.timings with default values, the x_res and y_res fields
* are expected to be already configured by the panel driver via
* omapdss_rfbi_set_size()
*/
rfbi.timings.hsw = 1;
rfbi.timings.hfp = 1;
rfbi.timings.hbp = 1;
rfbi.timings.vsw = 1;
rfbi.timings.vfp = 0;
rfbi.timings.vbp = 0;
rfbi.timings.interlace = false;
rfbi.timings.hsync_level = OMAPDSS_SIG_ACTIVE_HIGH;
rfbi.timings.vsync_level = OMAPDSS_SIG_ACTIVE_HIGH;
rfbi.timings.data_pclk_edge = OMAPDSS_DRIVE_SIG_RISING_EDGE;
rfbi.timings.de_level = OMAPDSS_SIG_ACTIVE_HIGH;
rfbi.timings.sync_pclk_edge = OMAPDSS_DRIVE_SIG_OPPOSITE_EDGES;
dss_mgr_set_timings(dssdev->manager, &rfbi.timings);
}
int omapdss_rfbi_display_enable(struct omap_dss_device *dssdev)
{
int r;
if (dssdev->manager == NULL) {
DSSERR("failed to enable display: no manager\n");
return -ENODEV;
}
r = rfbi_runtime_get();
if (r)
return r;
r = omap_dss_start_device(dssdev);
if (r) {
DSSERR("failed to start device\n");
goto err0;
}
r = omap_dispc_register_isr(framedone_callback, NULL,
DISPC_IRQ_FRAMEDONE);
if (r) {
DSSERR("can't get FRAMEDONE irq\n");
goto err1;
}
rfbi_config_lcd_manager(dssdev);
rfbi_configure(dssdev->phy.rfbi.channel, rfbi.pixel_size,
rfbi.data_lines);
rfbi_set_timings(dssdev->phy.rfbi.channel, &rfbi.intf_timings);
return 0;
err1:
omap_dss_stop_device(dssdev);
err0:
rfbi_runtime_put();
return r;
}
EXPORT_SYMBOL(omapdss_rfbi_display_enable);
void omapdss_rfbi_display_disable(struct omap_dss_device *dssdev)
{
omap_dispc_unregister_isr(framedone_callback, NULL,
DISPC_IRQ_FRAMEDONE);
omap_dss_stop_device(dssdev);
rfbi_runtime_put();
}
EXPORT_SYMBOL(omapdss_rfbi_display_disable);
static int __init rfbi_init_display(struct omap_dss_device *dssdev)
{
rfbi.dssdev[dssdev->phy.rfbi.channel] = dssdev;
return 0;
}
static struct omap_dss_device * __init rfbi_find_dssdev(struct platform_device *pdev)
{
struct omap_dss_board_info *pdata = pdev->dev.platform_data;
const char *def_disp_name = dss_get_default_display_name();
struct omap_dss_device *def_dssdev;
int i;
def_dssdev = NULL;
for (i = 0; i < pdata->num_devices; ++i) {
struct omap_dss_device *dssdev = pdata->devices[i];
if (dssdev->type != OMAP_DISPLAY_TYPE_DBI)
continue;
if (def_dssdev == NULL)
def_dssdev = dssdev;
if (def_disp_name != NULL &&
strcmp(dssdev->name, def_disp_name) == 0) {
def_dssdev = dssdev;
break;
}
}
return def_dssdev;
}
static void __init rfbi_probe_pdata(struct platform_device *rfbidev)
{
struct omap_dss_device *plat_dssdev;
struct omap_dss_device *dssdev;
int r;
plat_dssdev = rfbi_find_dssdev(rfbidev);
if (!plat_dssdev)
return;
dssdev = dss_alloc_and_init_device(&rfbidev->dev);
if (!dssdev)
return;
dss_copy_device_pdata(dssdev, plat_dssdev);
r = rfbi_init_display(dssdev);
if (r) {
DSSERR("device %s init failed: %d\n", dssdev->name, r);
dss_put_device(dssdev);
return;
}
r = dss_add_device(dssdev);
if (r) {
DSSERR("device %s register failed: %d\n", dssdev->name, r);
dss_put_device(dssdev);
return;
}
}
static void __init rfbi_init_output(struct platform_device *pdev)
{
struct omap_dss_output *out = &rfbi.output;
out->pdev = pdev;
out->id = OMAP_DSS_OUTPUT_DBI;
out->type = OMAP_DISPLAY_TYPE_DBI;
dss_register_output(out);
}
static void __exit rfbi_uninit_output(struct platform_device *pdev)
{
struct omap_dss_output *out = &rfbi.output;
dss_unregister_output(out);
}
/* RFBI HW IP initialisation */
static int __init omap_rfbihw_probe(struct platform_device *pdev)
{
u32 rev;
struct resource *rfbi_mem;
struct clk *clk;
int r;
rfbi.pdev = pdev;
sema_init(&rfbi.bus_lock, 1);
rfbi_mem = platform_get_resource(rfbi.pdev, IORESOURCE_MEM, 0);
if (!rfbi_mem) {
DSSERR("can't get IORESOURCE_MEM RFBI\n");
return -EINVAL;
}
rfbi.base = devm_ioremap(&pdev->dev, rfbi_mem->start,
resource_size(rfbi_mem));
if (!rfbi.base) {
DSSERR("can't ioremap RFBI\n");
return -ENOMEM;
}
clk = clk_get(&pdev->dev, "ick");
if (IS_ERR(clk)) {
DSSERR("can't get ick\n");
return PTR_ERR(clk);
}
rfbi.l4_khz = clk_get_rate(clk) / 1000;
clk_put(clk);
pm_runtime_enable(&pdev->dev);
r = rfbi_runtime_get();
if (r)
goto err_runtime_get;
msleep(10);
rev = rfbi_read_reg(RFBI_REVISION);
dev_dbg(&pdev->dev, "OMAP RFBI rev %d.%d\n",
FLD_GET(rev, 7, 4), FLD_GET(rev, 3, 0));
rfbi_runtime_put();
dss_debugfs_create_file("rfbi", rfbi_dump_regs);
rfbi_init_output(pdev);
rfbi_probe_pdata(pdev);
return 0;
err_runtime_get:
pm_runtime_disable(&pdev->dev);
return r;
}
static int __exit omap_rfbihw_remove(struct platform_device *pdev)
{
dss_unregister_child_devices(&pdev->dev);
rfbi_uninit_output(pdev);
pm_runtime_disable(&pdev->dev);
return 0;
}
static int rfbi_runtime_suspend(struct device *dev)
{
dispc_runtime_put();
return 0;
}
static int rfbi_runtime_resume(struct device *dev)
{
int r;
r = dispc_runtime_get();
if (r < 0)
return r;
return 0;
}
static const struct dev_pm_ops rfbi_pm_ops = {
.runtime_suspend = rfbi_runtime_suspend,
.runtime_resume = rfbi_runtime_resume,
};
static struct platform_driver omap_rfbihw_driver = {
.remove = __exit_p(omap_rfbihw_remove),
.driver = {
.name = "omapdss_rfbi",
.owner = THIS_MODULE,
.pm = &rfbi_pm_ops,
},
};
int __init rfbi_init_platform_driver(void)
{
return platform_driver_probe(&omap_rfbihw_driver, omap_rfbihw_probe);
}
void __exit rfbi_uninit_platform_driver(void)
{
platform_driver_unregister(&omap_rfbihw_driver);
}
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