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linux/drivers/video/omap2/dss/dispc.c
Tomi Valkeinen f95cb5ebd8 OMAPDSS: DISPC: skip scaling calculations when not scaling 
Current code calculates scaling factors for video overlays even when the
overlays are not scaled. Change the code to skip calculations when not
scaling.

This optimizes the code a bit, but also fixes a problem when configuring
an overlay for a disabled display: if the display is disabled we don't
necessarily know the pixel clock used when the display is enabled, and
in some cases (like HDMI) the pixel clock is set to zero until a proper
video mode is set later. A wrong pixel clock will mess up the
scaling calculations, causing an error like:

omapdss DISPC error: failed to set up scaling, required fclk rate = 0
Hz, current fclk rate = 170666666 Hz

A proper fix would be to check later whether the clocks are enough for the
scaling, at the point when the overlay or display is actually enabled,
but this patch removes the problem for now.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2011-11-18 10:09:17 +02:00

3485 lines
80 KiB
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/*
* linux/drivers/video/omap2/dss/dispc.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 "DISPC"
#include <linux/kernel.h>
#include <linux/dma-mapping.h>
#include <linux/vmalloc.h>
#include <linux/export.h>
#include <linux/clk.h>
#include <linux/io.h>
#include <linux/jiffies.h>
#include <linux/seq_file.h>
#include <linux/delay.h>
#include <linux/workqueue.h>
#include <linux/hardirq.h>
#include <linux/interrupt.h>
#include <linux/platform_device.h>
#include <linux/pm_runtime.h>
#include <plat/sram.h>
#include <plat/clock.h>
#include <video/omapdss.h>
#include "dss.h"
#include "dss_features.h"
#include "dispc.h"
/* DISPC */
#define DISPC_SZ_REGS SZ_4K
#define DISPC_IRQ_MASK_ERROR (DISPC_IRQ_GFX_FIFO_UNDERFLOW | \
DISPC_IRQ_OCP_ERR | \
DISPC_IRQ_VID1_FIFO_UNDERFLOW | \
DISPC_IRQ_VID2_FIFO_UNDERFLOW | \
DISPC_IRQ_SYNC_LOST | \
DISPC_IRQ_SYNC_LOST_DIGIT)
#define DISPC_MAX_NR_ISRS 8
struct omap_dispc_isr_data {
omap_dispc_isr_t isr;
void *arg;
u32 mask;
};
struct dispc_h_coef {
s8 hc4;
s8 hc3;
u8 hc2;
s8 hc1;
s8 hc0;
};
struct dispc_v_coef {
s8 vc22;
s8 vc2;
u8 vc1;
s8 vc0;
s8 vc00;
};
enum omap_burst_size {
BURST_SIZE_X2 = 0,
BURST_SIZE_X4 = 1,
BURST_SIZE_X8 = 2,
};
#define REG_GET(idx, start, end) \
FLD_GET(dispc_read_reg(idx), start, end)
#define REG_FLD_MOD(idx, val, start, end) \
dispc_write_reg(idx, FLD_MOD(dispc_read_reg(idx), val, start, end))
struct dispc_irq_stats {
unsigned long last_reset;
unsigned irq_count;
unsigned irqs[32];
};
static struct {
struct platform_device *pdev;
void __iomem *base;
int ctx_loss_cnt;
int irq;
struct clk *dss_clk;
u32 fifo_size[MAX_DSS_OVERLAYS];
spinlock_t irq_lock;
u32 irq_error_mask;
struct omap_dispc_isr_data registered_isr[DISPC_MAX_NR_ISRS];
u32 error_irqs;
struct work_struct error_work;
bool ctx_valid;
u32 ctx[DISPC_SZ_REGS / sizeof(u32)];
#ifdef CONFIG_OMAP2_DSS_COLLECT_IRQ_STATS
spinlock_t irq_stats_lock;
struct dispc_irq_stats irq_stats;
#endif
} dispc;
enum omap_color_component {
/* used for all color formats for OMAP3 and earlier
* and for RGB and Y color component on OMAP4
*/
DISPC_COLOR_COMPONENT_RGB_Y = 1 << 0,
/* used for UV component for
* OMAP_DSS_COLOR_YUV2, OMAP_DSS_COLOR_UYVY, OMAP_DSS_COLOR_NV12
* color formats on OMAP4
*/
DISPC_COLOR_COMPONENT_UV = 1 << 1,
};
static void _omap_dispc_set_irqs(void);
static inline void dispc_write_reg(const u16 idx, u32 val)
{
__raw_writel(val, dispc.base + idx);
}
static inline u32 dispc_read_reg(const u16 idx)
{
return __raw_readl(dispc.base + idx);
}
static int dispc_get_ctx_loss_count(void)
{
struct device *dev = &dispc.pdev->dev;
struct omap_display_platform_data *pdata = dev->platform_data;
struct omap_dss_board_info *board_data = pdata->board_data;
int cnt;
if (!board_data->get_context_loss_count)
return -ENOENT;
cnt = board_data->get_context_loss_count(dev);
WARN_ONCE(cnt < 0, "get_context_loss_count failed: %d\n", cnt);
return cnt;
}
#define SR(reg) \
dispc.ctx[DISPC_##reg / sizeof(u32)] = dispc_read_reg(DISPC_##reg)
#define RR(reg) \
dispc_write_reg(DISPC_##reg, dispc.ctx[DISPC_##reg / sizeof(u32)])
static void dispc_save_context(void)
{
int i, j;
DSSDBG("dispc_save_context\n");
SR(IRQENABLE);
SR(CONTROL);
SR(CONFIG);
SR(LINE_NUMBER);
if (dss_has_feature(FEAT_ALPHA_FIXED_ZORDER) ||
dss_has_feature(FEAT_ALPHA_FREE_ZORDER))
SR(GLOBAL_ALPHA);
if (dss_has_feature(FEAT_MGR_LCD2)) {
SR(CONTROL2);
SR(CONFIG2);
}
for (i = 0; i < dss_feat_get_num_mgrs(); i++) {
SR(DEFAULT_COLOR(i));
SR(TRANS_COLOR(i));
SR(SIZE_MGR(i));
if (i == OMAP_DSS_CHANNEL_DIGIT)
continue;
SR(TIMING_H(i));
SR(TIMING_V(i));
SR(POL_FREQ(i));
SR(DIVISORo(i));
SR(DATA_CYCLE1(i));
SR(DATA_CYCLE2(i));
SR(DATA_CYCLE3(i));
if (dss_has_feature(FEAT_CPR)) {
SR(CPR_COEF_R(i));
SR(CPR_COEF_G(i));
SR(CPR_COEF_B(i));
}
}
for (i = 0; i < dss_feat_get_num_ovls(); i++) {
SR(OVL_BA0(i));
SR(OVL_BA1(i));
SR(OVL_POSITION(i));
SR(OVL_SIZE(i));
SR(OVL_ATTRIBUTES(i));
SR(OVL_FIFO_THRESHOLD(i));
SR(OVL_ROW_INC(i));
SR(OVL_PIXEL_INC(i));
if (dss_has_feature(FEAT_PRELOAD))
SR(OVL_PRELOAD(i));
if (i == OMAP_DSS_GFX) {
SR(OVL_WINDOW_SKIP(i));
SR(OVL_TABLE_BA(i));
continue;
}
SR(OVL_FIR(i));
SR(OVL_PICTURE_SIZE(i));
SR(OVL_ACCU0(i));
SR(OVL_ACCU1(i));
for (j = 0; j < 8; j++)
SR(OVL_FIR_COEF_H(i, j));
for (j = 0; j < 8; j++)
SR(OVL_FIR_COEF_HV(i, j));
for (j = 0; j < 5; j++)
SR(OVL_CONV_COEF(i, j));
if (dss_has_feature(FEAT_FIR_COEF_V)) {
for (j = 0; j < 8; j++)
SR(OVL_FIR_COEF_V(i, j));
}
if (dss_has_feature(FEAT_HANDLE_UV_SEPARATE)) {
SR(OVL_BA0_UV(i));
SR(OVL_BA1_UV(i));
SR(OVL_FIR2(i));
SR(OVL_ACCU2_0(i));
SR(OVL_ACCU2_1(i));
for (j = 0; j < 8; j++)
SR(OVL_FIR_COEF_H2(i, j));
for (j = 0; j < 8; j++)
SR(OVL_FIR_COEF_HV2(i, j));
for (j = 0; j < 8; j++)
SR(OVL_FIR_COEF_V2(i, j));
}
if (dss_has_feature(FEAT_ATTR2))
SR(OVL_ATTRIBUTES2(i));
}
if (dss_has_feature(FEAT_CORE_CLK_DIV))
SR(DIVISOR);
dispc.ctx_loss_cnt = dispc_get_ctx_loss_count();
dispc.ctx_valid = true;
DSSDBG("context saved, ctx_loss_count %d\n", dispc.ctx_loss_cnt);
}
static void dispc_restore_context(void)
{
int i, j, ctx;
DSSDBG("dispc_restore_context\n");
if (!dispc.ctx_valid)
return;
ctx = dispc_get_ctx_loss_count();
if (ctx >= 0 && ctx == dispc.ctx_loss_cnt)
return;
DSSDBG("ctx_loss_count: saved %d, current %d\n",
dispc.ctx_loss_cnt, ctx);
/*RR(IRQENABLE);*/
/*RR(CONTROL);*/
RR(CONFIG);
RR(LINE_NUMBER);
if (dss_has_feature(FEAT_ALPHA_FIXED_ZORDER) ||
dss_has_feature(FEAT_ALPHA_FREE_ZORDER))
RR(GLOBAL_ALPHA);
if (dss_has_feature(FEAT_MGR_LCD2))
RR(CONFIG2);
for (i = 0; i < dss_feat_get_num_mgrs(); i++) {
RR(DEFAULT_COLOR(i));
RR(TRANS_COLOR(i));
RR(SIZE_MGR(i));
if (i == OMAP_DSS_CHANNEL_DIGIT)
continue;
RR(TIMING_H(i));
RR(TIMING_V(i));
RR(POL_FREQ(i));
RR(DIVISORo(i));
RR(DATA_CYCLE1(i));
RR(DATA_CYCLE2(i));
RR(DATA_CYCLE3(i));
if (dss_has_feature(FEAT_CPR)) {
RR(CPR_COEF_R(i));
RR(CPR_COEF_G(i));
RR(CPR_COEF_B(i));
}
}
for (i = 0; i < dss_feat_get_num_ovls(); i++) {
RR(OVL_BA0(i));
RR(OVL_BA1(i));
RR(OVL_POSITION(i));
RR(OVL_SIZE(i));
RR(OVL_ATTRIBUTES(i));
RR(OVL_FIFO_THRESHOLD(i));
RR(OVL_ROW_INC(i));
RR(OVL_PIXEL_INC(i));
if (dss_has_feature(FEAT_PRELOAD))
RR(OVL_PRELOAD(i));
if (i == OMAP_DSS_GFX) {
RR(OVL_WINDOW_SKIP(i));
RR(OVL_TABLE_BA(i));
continue;
}
RR(OVL_FIR(i));
RR(OVL_PICTURE_SIZE(i));
RR(OVL_ACCU0(i));
RR(OVL_ACCU1(i));
for (j = 0; j < 8; j++)
RR(OVL_FIR_COEF_H(i, j));
for (j = 0; j < 8; j++)
RR(OVL_FIR_COEF_HV(i, j));
for (j = 0; j < 5; j++)
RR(OVL_CONV_COEF(i, j));
if (dss_has_feature(FEAT_FIR_COEF_V)) {
for (j = 0; j < 8; j++)
RR(OVL_FIR_COEF_V(i, j));
}
if (dss_has_feature(FEAT_HANDLE_UV_SEPARATE)) {
RR(OVL_BA0_UV(i));
RR(OVL_BA1_UV(i));
RR(OVL_FIR2(i));
RR(OVL_ACCU2_0(i));
RR(OVL_ACCU2_1(i));
for (j = 0; j < 8; j++)
RR(OVL_FIR_COEF_H2(i, j));
for (j = 0; j < 8; j++)
RR(OVL_FIR_COEF_HV2(i, j));
for (j = 0; j < 8; j++)
RR(OVL_FIR_COEF_V2(i, j));
}
if (dss_has_feature(FEAT_ATTR2))
RR(OVL_ATTRIBUTES2(i));
}
if (dss_has_feature(FEAT_CORE_CLK_DIV))
RR(DIVISOR);
/* enable last, because LCD & DIGIT enable are here */
RR(CONTROL);
if (dss_has_feature(FEAT_MGR_LCD2))
RR(CONTROL2);
/* clear spurious SYNC_LOST_DIGIT interrupts */
dispc_write_reg(DISPC_IRQSTATUS, DISPC_IRQ_SYNC_LOST_DIGIT);
/*
* enable last so IRQs won't trigger before
* the context is fully restored
*/
RR(IRQENABLE);
DSSDBG("context restored\n");
}
#undef SR
#undef RR
int dispc_runtime_get(void)
{
int r;
DSSDBG("dispc_runtime_get\n");
r = pm_runtime_get_sync(&dispc.pdev->dev);
WARN_ON(r < 0);
return r < 0 ? r : 0;
}
void dispc_runtime_put(void)
{
int r;
DSSDBG("dispc_runtime_put\n");
r = pm_runtime_put(&dispc.pdev->dev);
WARN_ON(r < 0);
}
static inline bool dispc_mgr_is_lcd(enum omap_channel channel)
{
if (channel == OMAP_DSS_CHANNEL_LCD ||
channel == OMAP_DSS_CHANNEL_LCD2)
return true;
else
return false;
}
static struct omap_dss_device *dispc_mgr_get_device(enum omap_channel channel)
{
struct omap_overlay_manager *mgr =
omap_dss_get_overlay_manager(channel);
return mgr ? mgr->device : NULL;
}
bool dispc_mgr_go_busy(enum omap_channel channel)
{
int bit;
if (dispc_mgr_is_lcd(channel))
bit = 5; /* GOLCD */
else
bit = 6; /* GODIGIT */
if (channel == OMAP_DSS_CHANNEL_LCD2)
return REG_GET(DISPC_CONTROL2, bit, bit) == 1;
else
return REG_GET(DISPC_CONTROL, bit, bit) == 1;
}
void dispc_mgr_go(enum omap_channel channel)
{
int bit;
bool enable_bit, go_bit;
if (dispc_mgr_is_lcd(channel))
bit = 0; /* LCDENABLE */
else
bit = 1; /* DIGITALENABLE */
/* if the channel is not enabled, we don't need GO */
if (channel == OMAP_DSS_CHANNEL_LCD2)
enable_bit = REG_GET(DISPC_CONTROL2, bit, bit) == 1;
else
enable_bit = REG_GET(DISPC_CONTROL, bit, bit) == 1;
if (!enable_bit)
return;
if (dispc_mgr_is_lcd(channel))
bit = 5; /* GOLCD */
else
bit = 6; /* GODIGIT */
if (channel == OMAP_DSS_CHANNEL_LCD2)
go_bit = REG_GET(DISPC_CONTROL2, bit, bit) == 1;
else
go_bit = REG_GET(DISPC_CONTROL, bit, bit) == 1;
if (go_bit) {
DSSERR("GO bit not down for channel %d\n", channel);
return;
}
DSSDBG("GO %s\n", channel == OMAP_DSS_CHANNEL_LCD ? "LCD" :
(channel == OMAP_DSS_CHANNEL_LCD2 ? "LCD2" : "DIGIT"));
if (channel == OMAP_DSS_CHANNEL_LCD2)
REG_FLD_MOD(DISPC_CONTROL2, 1, bit, bit);
else
REG_FLD_MOD(DISPC_CONTROL, 1, bit, bit);
}
static void dispc_ovl_write_firh_reg(enum omap_plane plane, int reg, u32 value)
{
dispc_write_reg(DISPC_OVL_FIR_COEF_H(plane, reg), value);
}
static void dispc_ovl_write_firhv_reg(enum omap_plane plane, int reg, u32 value)
{
dispc_write_reg(DISPC_OVL_FIR_COEF_HV(plane, reg), value);
}
static void dispc_ovl_write_firv_reg(enum omap_plane plane, int reg, u32 value)
{
dispc_write_reg(DISPC_OVL_FIR_COEF_V(plane, reg), value);
}
static void dispc_ovl_write_firh2_reg(enum omap_plane plane, int reg, u32 value)
{
BUG_ON(plane == OMAP_DSS_GFX);
dispc_write_reg(DISPC_OVL_FIR_COEF_H2(plane, reg), value);
}
static void dispc_ovl_write_firhv2_reg(enum omap_plane plane, int reg,
u32 value)
{
BUG_ON(plane == OMAP_DSS_GFX);
dispc_write_reg(DISPC_OVL_FIR_COEF_HV2(plane, reg), value);
}
static void dispc_ovl_write_firv2_reg(enum omap_plane plane, int reg, u32 value)
{
BUG_ON(plane == OMAP_DSS_GFX);
dispc_write_reg(DISPC_OVL_FIR_COEF_V2(plane, reg), value);
}
static void dispc_ovl_set_scale_coef(enum omap_plane plane, int hscaleup,
int vscaleup, int five_taps,
enum omap_color_component color_comp)
{
/* Coefficients for horizontal up-sampling */
static const struct dispc_h_coef coef_hup[8] = {
{ 0, 0, 128, 0, 0 },
{ -1, 13, 124, -8, 0 },
{ -2, 30, 112, -11, -1 },
{ -5, 51, 95, -11, -2 },
{ 0, -9, 73, 73, -9 },
{ -2, -11, 95, 51, -5 },
{ -1, -11, 112, 30, -2 },
{ 0, -8, 124, 13, -1 },
};
/* Coefficients for vertical up-sampling */
static const struct dispc_v_coef coef_vup_3tap[8] = {
{ 0, 0, 128, 0, 0 },
{ 0, 3, 123, 2, 0 },
{ 0, 12, 111, 5, 0 },
{ 0, 32, 89, 7, 0 },
{ 0, 0, 64, 64, 0 },
{ 0, 7, 89, 32, 0 },
{ 0, 5, 111, 12, 0 },
{ 0, 2, 123, 3, 0 },
};
static const struct dispc_v_coef coef_vup_5tap[8] = {
{ 0, 0, 128, 0, 0 },
{ -1, 13, 124, -8, 0 },
{ -2, 30, 112, -11, -1 },
{ -5, 51, 95, -11, -2 },
{ 0, -9, 73, 73, -9 },
{ -2, -11, 95, 51, -5 },
{ -1, -11, 112, 30, -2 },
{ 0, -8, 124, 13, -1 },
};
/* Coefficients for horizontal down-sampling */
static const struct dispc_h_coef coef_hdown[8] = {
{ 0, 36, 56, 36, 0 },
{ 4, 40, 55, 31, -2 },
{ 8, 44, 54, 27, -5 },
{ 12, 48, 53, 22, -7 },
{ -9, 17, 52, 51, 17 },
{ -7, 22, 53, 48, 12 },
{ -5, 27, 54, 44, 8 },
{ -2, 31, 55, 40, 4 },
};
/* Coefficients for vertical down-sampling */
static const struct dispc_v_coef coef_vdown_3tap[8] = {
{ 0, 36, 56, 36, 0 },
{ 0, 40, 57, 31, 0 },
{ 0, 45, 56, 27, 0 },
{ 0, 50, 55, 23, 0 },
{ 0, 18, 55, 55, 0 },
{ 0, 23, 55, 50, 0 },
{ 0, 27, 56, 45, 0 },
{ 0, 31, 57, 40, 0 },
};
static const struct dispc_v_coef coef_vdown_5tap[8] = {
{ 0, 36, 56, 36, 0 },
{ 4, 40, 55, 31, -2 },
{ 8, 44, 54, 27, -5 },
{ 12, 48, 53, 22, -7 },
{ -9, 17, 52, 51, 17 },
{ -7, 22, 53, 48, 12 },
{ -5, 27, 54, 44, 8 },
{ -2, 31, 55, 40, 4 },
};
const struct dispc_h_coef *h_coef;
const struct dispc_v_coef *v_coef;
int i;
if (hscaleup)
h_coef = coef_hup;
else
h_coef = coef_hdown;
if (vscaleup)
v_coef = five_taps ? coef_vup_5tap : coef_vup_3tap;
else
v_coef = five_taps ? coef_vdown_5tap : coef_vdown_3tap;
for (i = 0; i < 8; i++) {
u32 h, hv;
h = FLD_VAL(h_coef[i].hc0, 7, 0)
| FLD_VAL(h_coef[i].hc1, 15, 8)
| FLD_VAL(h_coef[i].hc2, 23, 16)
| FLD_VAL(h_coef[i].hc3, 31, 24);
hv = FLD_VAL(h_coef[i].hc4, 7, 0)
| FLD_VAL(v_coef[i].vc0, 15, 8)
| FLD_VAL(v_coef[i].vc1, 23, 16)
| FLD_VAL(v_coef[i].vc2, 31, 24);
if (color_comp == DISPC_COLOR_COMPONENT_RGB_Y) {
dispc_ovl_write_firh_reg(plane, i, h);
dispc_ovl_write_firhv_reg(plane, i, hv);
} else {
dispc_ovl_write_firh2_reg(plane, i, h);
dispc_ovl_write_firhv2_reg(plane, i, hv);
}
}
if (five_taps) {
for (i = 0; i < 8; i++) {
u32 v;
v = FLD_VAL(v_coef[i].vc00, 7, 0)
| FLD_VAL(v_coef[i].vc22, 15, 8);
if (color_comp == DISPC_COLOR_COMPONENT_RGB_Y)
dispc_ovl_write_firv_reg(plane, i, v);
else
dispc_ovl_write_firv2_reg(plane, i, v);
}
}
}
static void _dispc_setup_color_conv_coef(void)
{
int i;
const struct color_conv_coef {
int ry, rcr, rcb, gy, gcr, gcb, by, bcr, bcb;
int full_range;
} ctbl_bt601_5 = {
298, 409, 0, 298, -208, -100, 298, 0, 517, 0,
};
const struct color_conv_coef *ct;
#define CVAL(x, y) (FLD_VAL(x, 26, 16) | FLD_VAL(y, 10, 0))
ct = &ctbl_bt601_5;
for (i = 1; i < dss_feat_get_num_ovls(); i++) {
dispc_write_reg(DISPC_OVL_CONV_COEF(i, 0),
CVAL(ct->rcr, ct->ry));
dispc_write_reg(DISPC_OVL_CONV_COEF(i, 1),
CVAL(ct->gy, ct->rcb));
dispc_write_reg(DISPC_OVL_CONV_COEF(i, 2),
CVAL(ct->gcb, ct->gcr));
dispc_write_reg(DISPC_OVL_CONV_COEF(i, 3),
CVAL(ct->bcr, ct->by));
dispc_write_reg(DISPC_OVL_CONV_COEF(i, 4),
CVAL(0, ct->bcb));
REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(i), ct->full_range,
11, 11);
}
#undef CVAL
}
static void dispc_ovl_set_ba0(enum omap_plane plane, u32 paddr)
{
dispc_write_reg(DISPC_OVL_BA0(plane), paddr);
}
static void dispc_ovl_set_ba1(enum omap_plane plane, u32 paddr)
{
dispc_write_reg(DISPC_OVL_BA1(plane), paddr);
}
static void dispc_ovl_set_ba0_uv(enum omap_plane plane, u32 paddr)
{
dispc_write_reg(DISPC_OVL_BA0_UV(plane), paddr);
}
static void dispc_ovl_set_ba1_uv(enum omap_plane plane, u32 paddr)
{
dispc_write_reg(DISPC_OVL_BA1_UV(plane), paddr);
}
static void dispc_ovl_set_pos(enum omap_plane plane, int x, int y)
{
u32 val = FLD_VAL(y, 26, 16) | FLD_VAL(x, 10, 0);
dispc_write_reg(DISPC_OVL_POSITION(plane), val);
}
static void dispc_ovl_set_pic_size(enum omap_plane plane, int width, int height)
{
u32 val = FLD_VAL(height - 1, 26, 16) | FLD_VAL(width - 1, 10, 0);
if (plane == OMAP_DSS_GFX)
dispc_write_reg(DISPC_OVL_SIZE(plane), val);
else
dispc_write_reg(DISPC_OVL_PICTURE_SIZE(plane), val);
}
static void dispc_ovl_set_vid_size(enum omap_plane plane, int width, int height)
{
u32 val;
BUG_ON(plane == OMAP_DSS_GFX);
val = FLD_VAL(height - 1, 26, 16) | FLD_VAL(width - 1, 10, 0);
dispc_write_reg(DISPC_OVL_SIZE(plane), val);
}
static void dispc_ovl_set_zorder(enum omap_plane plane, u8 zorder)
{
struct omap_overlay *ovl = omap_dss_get_overlay(plane);
if ((ovl->caps & OMAP_DSS_OVL_CAP_ZORDER) == 0)
return;
REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), zorder, 27, 26);
}
static void dispc_ovl_enable_zorder_planes(void)
{
int i;
if (!dss_has_feature(FEAT_ALPHA_FREE_ZORDER))
return;
for (i = 0; i < dss_feat_get_num_ovls(); i++)
REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(i), 1, 25, 25);
}
static void dispc_ovl_set_pre_mult_alpha(enum omap_plane plane, bool enable)
{
struct omap_overlay *ovl = omap_dss_get_overlay(plane);
if ((ovl->caps & OMAP_DSS_OVL_CAP_PRE_MULT_ALPHA) == 0)
return;
REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), enable ? 1 : 0, 28, 28);
}
static void dispc_ovl_setup_global_alpha(enum omap_plane plane, u8 global_alpha)
{
static const unsigned shifts[] = { 0, 8, 16, 24, };
int shift;
struct omap_overlay *ovl = omap_dss_get_overlay(plane);
if ((ovl->caps & OMAP_DSS_OVL_CAP_GLOBAL_ALPHA) == 0)
return;
shift = shifts[plane];
REG_FLD_MOD(DISPC_GLOBAL_ALPHA, global_alpha, shift + 7, shift);
}
static void dispc_ovl_set_pix_inc(enum omap_plane plane, s32 inc)
{
dispc_write_reg(DISPC_OVL_PIXEL_INC(plane), inc);
}
static void dispc_ovl_set_row_inc(enum omap_plane plane, s32 inc)
{
dispc_write_reg(DISPC_OVL_ROW_INC(plane), inc);
}
static void dispc_ovl_set_color_mode(enum omap_plane plane,
enum omap_color_mode color_mode)
{
u32 m = 0;
if (plane != OMAP_DSS_GFX) {
switch (color_mode) {
case OMAP_DSS_COLOR_NV12:
m = 0x0; break;
case OMAP_DSS_COLOR_RGB12U:
m = 0x1; break;
case OMAP_DSS_COLOR_RGBA16:
m = 0x2; break;
case OMAP_DSS_COLOR_RGBX16:
m = 0x4; break;
case OMAP_DSS_COLOR_ARGB16:
m = 0x5; break;
case OMAP_DSS_COLOR_RGB16:
m = 0x6; break;
case OMAP_DSS_COLOR_ARGB16_1555:
m = 0x7; break;
case OMAP_DSS_COLOR_RGB24U:
m = 0x8; break;
case OMAP_DSS_COLOR_RGB24P:
m = 0x9; break;
case OMAP_DSS_COLOR_YUV2:
m = 0xa; break;
case OMAP_DSS_COLOR_UYVY:
m = 0xb; break;
case OMAP_DSS_COLOR_ARGB32:
m = 0xc; break;
case OMAP_DSS_COLOR_RGBA32:
m = 0xd; break;
case OMAP_DSS_COLOR_RGBX32:
m = 0xe; break;
case OMAP_DSS_COLOR_XRGB16_1555:
m = 0xf; break;
default:
BUG(); break;
}
} else {
switch (color_mode) {
case OMAP_DSS_COLOR_CLUT1:
m = 0x0; break;
case OMAP_DSS_COLOR_CLUT2:
m = 0x1; break;
case OMAP_DSS_COLOR_CLUT4:
m = 0x2; break;
case OMAP_DSS_COLOR_CLUT8:
m = 0x3; break;
case OMAP_DSS_COLOR_RGB12U:
m = 0x4; break;
case OMAP_DSS_COLOR_ARGB16:
m = 0x5; break;
case OMAP_DSS_COLOR_RGB16:
m = 0x6; break;
case OMAP_DSS_COLOR_ARGB16_1555:
m = 0x7; break;
case OMAP_DSS_COLOR_RGB24U:
m = 0x8; break;
case OMAP_DSS_COLOR_RGB24P:
m = 0x9; break;
case OMAP_DSS_COLOR_YUV2:
m = 0xa; break;
case OMAP_DSS_COLOR_UYVY:
m = 0xb; break;
case OMAP_DSS_COLOR_ARGB32:
m = 0xc; break;
case OMAP_DSS_COLOR_RGBA32:
m = 0xd; break;
case OMAP_DSS_COLOR_RGBX32:
m = 0xe; break;
case OMAP_DSS_COLOR_XRGB16_1555:
m = 0xf; break;
default:
BUG(); break;
}
}
REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), m, 4, 1);
}
static void dispc_ovl_set_channel_out(enum omap_plane plane,
enum omap_channel channel)
{
int shift;
u32 val;
int chan = 0, chan2 = 0;
switch (plane) {
case OMAP_DSS_GFX:
shift = 8;
break;
case OMAP_DSS_VIDEO1:
case OMAP_DSS_VIDEO2:
case OMAP_DSS_VIDEO3:
shift = 16;
break;
default:
BUG();
return;
}
val = dispc_read_reg(DISPC_OVL_ATTRIBUTES(plane));
if (dss_has_feature(FEAT_MGR_LCD2)) {
switch (channel) {
case OMAP_DSS_CHANNEL_LCD:
chan = 0;
chan2 = 0;
break;
case OMAP_DSS_CHANNEL_DIGIT:
chan = 1;
chan2 = 0;
break;
case OMAP_DSS_CHANNEL_LCD2:
chan = 0;
chan2 = 1;
break;
default:
BUG();
}
val = FLD_MOD(val, chan, shift, shift);
val = FLD_MOD(val, chan2, 31, 30);
} else {
val = FLD_MOD(val, channel, shift, shift);
}
dispc_write_reg(DISPC_OVL_ATTRIBUTES(plane), val);
}
static void dispc_ovl_set_burst_size(enum omap_plane plane,
enum omap_burst_size burst_size)
{
static const unsigned shifts[] = { 6, 14, 14, 14, };
int shift;
shift = shifts[plane];
REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), burst_size, shift + 1, shift);
}
static void dispc_configure_burst_sizes(void)
{
int i;
const int burst_size = BURST_SIZE_X8;
/* Configure burst size always to maximum size */
for (i = 0; i < omap_dss_get_num_overlays(); ++i)
dispc_ovl_set_burst_size(i, burst_size);
}
u32 dispc_ovl_get_burst_size(enum omap_plane plane)
{
unsigned unit = dss_feat_get_burst_size_unit();
/* burst multiplier is always x8 (see dispc_configure_burst_sizes()) */
return unit * 8;
}
void dispc_enable_gamma_table(bool enable)
{
/*
* This is partially implemented to support only disabling of
* the gamma table.
*/
if (enable) {
DSSWARN("Gamma table enabling for TV not yet supported");
return;
}
REG_FLD_MOD(DISPC_CONFIG, enable, 9, 9);
}
void dispc_mgr_enable_cpr(enum omap_channel channel, bool enable)
{
u16 reg;
if (channel == OMAP_DSS_CHANNEL_LCD)
reg = DISPC_CONFIG;
else if (channel == OMAP_DSS_CHANNEL_LCD2)
reg = DISPC_CONFIG2;
else
return;
REG_FLD_MOD(reg, enable, 15, 15);
}
void dispc_mgr_set_cpr_coef(enum omap_channel channel,
struct omap_dss_cpr_coefs *coefs)
{
u32 coef_r, coef_g, coef_b;
if (!dispc_mgr_is_lcd(channel))
return;
coef_r = FLD_VAL(coefs->rr, 31, 22) | FLD_VAL(coefs->rg, 20, 11) |
FLD_VAL(coefs->rb, 9, 0);
coef_g = FLD_VAL(coefs->gr, 31, 22) | FLD_VAL(coefs->gg, 20, 11) |
FLD_VAL(coefs->gb, 9, 0);
coef_b = FLD_VAL(coefs->br, 31, 22) | FLD_VAL(coefs->bg, 20, 11) |
FLD_VAL(coefs->bb, 9, 0);
dispc_write_reg(DISPC_CPR_COEF_R(channel), coef_r);
dispc_write_reg(DISPC_CPR_COEF_G(channel), coef_g);
dispc_write_reg(DISPC_CPR_COEF_B(channel), coef_b);
}
static void dispc_ovl_set_vid_color_conv(enum omap_plane plane, bool enable)
{
u32 val;
BUG_ON(plane == OMAP_DSS_GFX);
val = dispc_read_reg(DISPC_OVL_ATTRIBUTES(plane));
val = FLD_MOD(val, enable, 9, 9);
dispc_write_reg(DISPC_OVL_ATTRIBUTES(plane), val);
}
static void dispc_ovl_enable_replication(enum omap_plane plane, bool enable)
{
static const unsigned shifts[] = { 5, 10, 10, 10 };
int shift;
shift = shifts[plane];
REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), enable, shift, shift);
}
void dispc_mgr_set_lcd_size(enum omap_channel channel, u16 width, u16 height)
{
u32 val;
BUG_ON((width > (1 << 11)) || (height > (1 << 11)));
val = FLD_VAL(height - 1, 26, 16) | FLD_VAL(width - 1, 10, 0);
dispc_write_reg(DISPC_SIZE_MGR(channel), val);
}
void dispc_set_digit_size(u16 width, u16 height)
{
u32 val;
BUG_ON((width > (1 << 11)) || (height > (1 << 11)));
val = FLD_VAL(height - 1, 26, 16) | FLD_VAL(width - 1, 10, 0);
dispc_write_reg(DISPC_SIZE_MGR(OMAP_DSS_CHANNEL_DIGIT), val);
}
static void dispc_read_plane_fifo_sizes(void)
{
u32 size;
int plane;
u8 start, end;
u32 unit;
unit = dss_feat_get_buffer_size_unit();
dss_feat_get_reg_field(FEAT_REG_FIFOSIZE, &start, &end);
for (plane = 0; plane < dss_feat_get_num_ovls(); ++plane) {
size = REG_GET(DISPC_OVL_FIFO_SIZE_STATUS(plane), start, end);
size *= unit;
dispc.fifo_size[plane] = size;
}
}
u32 dispc_ovl_get_fifo_size(enum omap_plane plane)
{
return dispc.fifo_size[plane];
}
static void dispc_ovl_set_fifo_threshold(enum omap_plane plane, u32 low,
u32 high)
{
u8 hi_start, hi_end, lo_start, lo_end;
u32 unit;
unit = dss_feat_get_buffer_size_unit();
WARN_ON(low % unit != 0);
WARN_ON(high % unit != 0);
low /= unit;
high /= unit;
dss_feat_get_reg_field(FEAT_REG_FIFOHIGHTHRESHOLD, &hi_start, &hi_end);
dss_feat_get_reg_field(FEAT_REG_FIFOLOWTHRESHOLD, &lo_start, &lo_end);
DSSDBG("fifo(%d) low/high old %u/%u, new %u/%u\n",
plane,
REG_GET(DISPC_OVL_FIFO_THRESHOLD(plane),
lo_start, lo_end),
REG_GET(DISPC_OVL_FIFO_THRESHOLD(plane),
hi_start, hi_end),
low, high);
dispc_write_reg(DISPC_OVL_FIFO_THRESHOLD(plane),
FLD_VAL(high, hi_start, hi_end) |
FLD_VAL(low, lo_start, lo_end));
}
void dispc_enable_fifomerge(bool enable)
{
DSSDBG("FIFO merge %s\n", enable ? "enabled" : "disabled");
REG_FLD_MOD(DISPC_CONFIG, enable ? 1 : 0, 14, 14);
}
static void dispc_ovl_set_fir(enum omap_plane plane,
int hinc, int vinc,
enum omap_color_component color_comp)
{
u32 val;
if (color_comp == DISPC_COLOR_COMPONENT_RGB_Y) {
u8 hinc_start, hinc_end, vinc_start, vinc_end;
dss_feat_get_reg_field(FEAT_REG_FIRHINC,
&hinc_start, &hinc_end);
dss_feat_get_reg_field(FEAT_REG_FIRVINC,
&vinc_start, &vinc_end);
val = FLD_VAL(vinc, vinc_start, vinc_end) |
FLD_VAL(hinc, hinc_start, hinc_end);
dispc_write_reg(DISPC_OVL_FIR(plane), val);
} else {
val = FLD_VAL(vinc, 28, 16) | FLD_VAL(hinc, 12, 0);
dispc_write_reg(DISPC_OVL_FIR2(plane), val);
}
}
static void dispc_ovl_set_vid_accu0(enum omap_plane plane, int haccu, int vaccu)
{
u32 val;
u8 hor_start, hor_end, vert_start, vert_end;
dss_feat_get_reg_field(FEAT_REG_HORIZONTALACCU, &hor_start, &hor_end);
dss_feat_get_reg_field(FEAT_REG_VERTICALACCU, &vert_start, &vert_end);
val = FLD_VAL(vaccu, vert_start, vert_end) |
FLD_VAL(haccu, hor_start, hor_end);
dispc_write_reg(DISPC_OVL_ACCU0(plane), val);
}
static void dispc_ovl_set_vid_accu1(enum omap_plane plane, int haccu, int vaccu)
{
u32 val;
u8 hor_start, hor_end, vert_start, vert_end;
dss_feat_get_reg_field(FEAT_REG_HORIZONTALACCU, &hor_start, &hor_end);
dss_feat_get_reg_field(FEAT_REG_VERTICALACCU, &vert_start, &vert_end);
val = FLD_VAL(vaccu, vert_start, vert_end) |
FLD_VAL(haccu, hor_start, hor_end);
dispc_write_reg(DISPC_OVL_ACCU1(plane), val);
}
static void dispc_ovl_set_vid_accu2_0(enum omap_plane plane, int haccu,
int vaccu)
{
u32 val;
val = FLD_VAL(vaccu, 26, 16) | FLD_VAL(haccu, 10, 0);
dispc_write_reg(DISPC_OVL_ACCU2_0(plane), val);
}
static void dispc_ovl_set_vid_accu2_1(enum omap_plane plane, int haccu,
int vaccu)
{
u32 val;
val = FLD_VAL(vaccu, 26, 16) | FLD_VAL(haccu, 10, 0);
dispc_write_reg(DISPC_OVL_ACCU2_1(plane), val);
}
static void dispc_ovl_set_scale_param(enum omap_plane plane,
u16 orig_width, u16 orig_height,
u16 out_width, u16 out_height,
bool five_taps, u8 rotation,
enum omap_color_component color_comp)
{
int fir_hinc, fir_vinc;
int hscaleup, vscaleup;
hscaleup = orig_width <= out_width;
vscaleup = orig_height <= out_height;
dispc_ovl_set_scale_coef(plane, hscaleup, vscaleup, five_taps,
color_comp);
fir_hinc = 1024 * orig_width / out_width;
fir_vinc = 1024 * orig_height / out_height;
dispc_ovl_set_fir(plane, fir_hinc, fir_vinc, color_comp);
}
static void dispc_ovl_set_scaling_common(enum omap_plane plane,
u16 orig_width, u16 orig_height,
u16 out_width, u16 out_height,
bool ilace, bool five_taps,
bool fieldmode, enum omap_color_mode color_mode,
u8 rotation)
{
int accu0 = 0;
int accu1 = 0;
u32 l;
dispc_ovl_set_scale_param(plane, orig_width, orig_height,
out_width, out_height, five_taps,
rotation, DISPC_COLOR_COMPONENT_RGB_Y);
l = dispc_read_reg(DISPC_OVL_ATTRIBUTES(plane));
/* RESIZEENABLE and VERTICALTAPS */
l &= ~((0x3 << 5) | (0x1 << 21));
l |= (orig_width != out_width) ? (1 << 5) : 0;
l |= (orig_height != out_height) ? (1 << 6) : 0;
l |= five_taps ? (1 << 21) : 0;
/* VRESIZECONF and HRESIZECONF */
if (dss_has_feature(FEAT_RESIZECONF)) {
l &= ~(0x3 << 7);
l |= (orig_width <= out_width) ? 0 : (1 << 7);
l |= (orig_height <= out_height) ? 0 : (1 << 8);
}
/* LINEBUFFERSPLIT */
if (dss_has_feature(FEAT_LINEBUFFERSPLIT)) {
l &= ~(0x1 << 22);
l |= five_taps ? (1 << 22) : 0;
}
dispc_write_reg(DISPC_OVL_ATTRIBUTES(plane), l);
/*
* field 0 = even field = bottom field
* field 1 = odd field = top field
*/
if (ilace && !fieldmode) {
accu1 = 0;
accu0 = ((1024 * orig_height / out_height) / 2) & 0x3ff;
if (accu0 >= 1024/2) {
accu1 = 1024/2;
accu0 -= accu1;
}
}
dispc_ovl_set_vid_accu0(plane, 0, accu0);
dispc_ovl_set_vid_accu1(plane, 0, accu1);
}
static void dispc_ovl_set_scaling_uv(enum omap_plane plane,
u16 orig_width, u16 orig_height,
u16 out_width, u16 out_height,
bool ilace, bool five_taps,
bool fieldmode, enum omap_color_mode color_mode,
u8 rotation)
{
int scale_x = out_width != orig_width;
int scale_y = out_height != orig_height;
if (!dss_has_feature(FEAT_HANDLE_UV_SEPARATE))
return;
if ((color_mode != OMAP_DSS_COLOR_YUV2 &&
color_mode != OMAP_DSS_COLOR_UYVY &&
color_mode != OMAP_DSS_COLOR_NV12)) {
/* reset chroma resampling for RGB formats */
REG_FLD_MOD(DISPC_OVL_ATTRIBUTES2(plane), 0, 8, 8);
return;
}
switch (color_mode) {
case OMAP_DSS_COLOR_NV12:
/* UV is subsampled by 2 vertically*/
orig_height >>= 1;
/* UV is subsampled by 2 horz.*/
orig_width >>= 1;
break;
case OMAP_DSS_COLOR_YUV2:
case OMAP_DSS_COLOR_UYVY:
/*For YUV422 with 90/270 rotation,
*we don't upsample chroma
*/
if (rotation == OMAP_DSS_ROT_0 ||
rotation == OMAP_DSS_ROT_180)
/* UV is subsampled by 2 hrz*/
orig_width >>= 1;
/* must use FIR for YUV422 if rotated */
if (rotation != OMAP_DSS_ROT_0)
scale_x = scale_y = true;
break;
default:
BUG();
}
if (out_width != orig_width)
scale_x = true;
if (out_height != orig_height)
scale_y = true;
dispc_ovl_set_scale_param(plane, orig_width, orig_height,
out_width, out_height, five_taps,
rotation, DISPC_COLOR_COMPONENT_UV);
REG_FLD_MOD(DISPC_OVL_ATTRIBUTES2(plane),
(scale_x || scale_y) ? 1 : 0, 8, 8);
/* set H scaling */
REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), scale_x ? 1 : 0, 5, 5);
/* set V scaling */
REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), scale_y ? 1 : 0, 6, 6);
dispc_ovl_set_vid_accu2_0(plane, 0x80, 0);
dispc_ovl_set_vid_accu2_1(plane, 0x80, 0);
}
static void dispc_ovl_set_scaling(enum omap_plane plane,
u16 orig_width, u16 orig_height,
u16 out_width, u16 out_height,
bool ilace, bool five_taps,
bool fieldmode, enum omap_color_mode color_mode,
u8 rotation)
{
BUG_ON(plane == OMAP_DSS_GFX);
dispc_ovl_set_scaling_common(plane,
orig_width, orig_height,
out_width, out_height,
ilace, five_taps,
fieldmode, color_mode,
rotation);
dispc_ovl_set_scaling_uv(plane,
orig_width, orig_height,
out_width, out_height,
ilace, five_taps,
fieldmode, color_mode,
rotation);
}
static void dispc_ovl_set_rotation_attrs(enum omap_plane plane, u8 rotation,
bool mirroring, enum omap_color_mode color_mode)
{
bool row_repeat = false;
int vidrot = 0;
if (color_mode == OMAP_DSS_COLOR_YUV2 ||
color_mode == OMAP_DSS_COLOR_UYVY) {
if (mirroring) {
switch (rotation) {
case OMAP_DSS_ROT_0:
vidrot = 2;
break;
case OMAP_DSS_ROT_90:
vidrot = 1;
break;
case OMAP_DSS_ROT_180:
vidrot = 0;
break;
case OMAP_DSS_ROT_270:
vidrot = 3;
break;
}
} else {
switch (rotation) {
case OMAP_DSS_ROT_0:
vidrot = 0;
break;
case OMAP_DSS_ROT_90:
vidrot = 1;
break;
case OMAP_DSS_ROT_180:
vidrot = 2;
break;
case OMAP_DSS_ROT_270:
vidrot = 3;
break;
}
}
if (rotation == OMAP_DSS_ROT_90 || rotation == OMAP_DSS_ROT_270)
row_repeat = true;
else
row_repeat = false;
}
REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), vidrot, 13, 12);
if (dss_has_feature(FEAT_ROWREPEATENABLE))
REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane),
row_repeat ? 1 : 0, 18, 18);
}
static int color_mode_to_bpp(enum omap_color_mode color_mode)
{
switch (color_mode) {
case OMAP_DSS_COLOR_CLUT1:
return 1;
case OMAP_DSS_COLOR_CLUT2:
return 2;
case OMAP_DSS_COLOR_CLUT4:
return 4;
case OMAP_DSS_COLOR_CLUT8:
case OMAP_DSS_COLOR_NV12:
return 8;
case OMAP_DSS_COLOR_RGB12U:
case OMAP_DSS_COLOR_RGB16:
case OMAP_DSS_COLOR_ARGB16:
case OMAP_DSS_COLOR_YUV2:
case OMAP_DSS_COLOR_UYVY:
case OMAP_DSS_COLOR_RGBA16:
case OMAP_DSS_COLOR_RGBX16:
case OMAP_DSS_COLOR_ARGB16_1555:
case OMAP_DSS_COLOR_XRGB16_1555:
return 16;
case OMAP_DSS_COLOR_RGB24P:
return 24;
case OMAP_DSS_COLOR_RGB24U:
case OMAP_DSS_COLOR_ARGB32:
case OMAP_DSS_COLOR_RGBA32:
case OMAP_DSS_COLOR_RGBX32:
return 32;
default:
BUG();
}
}
static s32 pixinc(int pixels, u8 ps)
{
if (pixels == 1)
return 1;
else if (pixels > 1)
return 1 + (pixels - 1) * ps;
else if (pixels < 0)
return 1 - (-pixels + 1) * ps;
else
BUG();
}
static void calc_vrfb_rotation_offset(u8 rotation, bool mirror,
u16 screen_width,
u16 width, u16 height,
enum omap_color_mode color_mode, bool fieldmode,
unsigned int field_offset,
unsigned *offset0, unsigned *offset1,
s32 *row_inc, s32 *pix_inc)
{
u8 ps;
/* FIXME CLUT formats */
switch (color_mode) {
case OMAP_DSS_COLOR_CLUT1:
case OMAP_DSS_COLOR_CLUT2:
case OMAP_DSS_COLOR_CLUT4:
case OMAP_DSS_COLOR_CLUT8:
BUG();
return;
case OMAP_DSS_COLOR_YUV2:
case OMAP_DSS_COLOR_UYVY:
ps = 4;
break;
default:
ps = color_mode_to_bpp(color_mode) / 8;
break;
}
DSSDBG("calc_rot(%d): scrw %d, %dx%d\n", rotation, screen_width,
width, height);
/*
* field 0 = even field = bottom field
* field 1 = odd field = top field
*/
switch (rotation + mirror * 4) {
case OMAP_DSS_ROT_0:
case OMAP_DSS_ROT_180:
/*
* If the pixel format is YUV or UYVY divide the width
* of the image by 2 for 0 and 180 degree rotation.
*/
if (color_mode == OMAP_DSS_COLOR_YUV2 ||
color_mode == OMAP_DSS_COLOR_UYVY)
width = width >> 1;
case OMAP_DSS_ROT_90:
case OMAP_DSS_ROT_270:
*offset1 = 0;
if (field_offset)
*offset0 = field_offset * screen_width * ps;
else
*offset0 = 0;
*row_inc = pixinc(1 + (screen_width - width) +
(fieldmode ? screen_width : 0),
ps);
*pix_inc = pixinc(1, ps);
break;
case OMAP_DSS_ROT_0 + 4:
case OMAP_DSS_ROT_180 + 4:
/* If the pixel format is YUV or UYVY divide the width
* of the image by 2 for 0 degree and 180 degree
*/
if (color_mode == OMAP_DSS_COLOR_YUV2 ||
color_mode == OMAP_DSS_COLOR_UYVY)
width = width >> 1;
case OMAP_DSS_ROT_90 + 4:
case OMAP_DSS_ROT_270 + 4:
*offset1 = 0;
if (field_offset)
*offset0 = field_offset * screen_width * ps;
else
*offset0 = 0;
*row_inc = pixinc(1 - (screen_width + width) -
(fieldmode ? screen_width : 0),
ps);
*pix_inc = pixinc(1, ps);
break;
default:
BUG();
}
}
static void calc_dma_rotation_offset(u8 rotation, bool mirror,
u16 screen_width,
u16 width, u16 height,
enum omap_color_mode color_mode, bool fieldmode,
unsigned int field_offset,
unsigned *offset0, unsigned *offset1,
s32 *row_inc, s32 *pix_inc)
{
u8 ps;
u16 fbw, fbh;
/* FIXME CLUT formats */
switch (color_mode) {
case OMAP_DSS_COLOR_CLUT1:
case OMAP_DSS_COLOR_CLUT2:
case OMAP_DSS_COLOR_CLUT4:
case OMAP_DSS_COLOR_CLUT8:
BUG();
return;
default:
ps = color_mode_to_bpp(color_mode) / 8;
break;
}
DSSDBG("calc_rot(%d): scrw %d, %dx%d\n", rotation, screen_width,
width, height);
/* width & height are overlay sizes, convert to fb sizes */
if (rotation == OMAP_DSS_ROT_0 || rotation == OMAP_DSS_ROT_180) {
fbw = width;
fbh = height;
} else {
fbw = height;
fbh = width;
}
/*
* field 0 = even field = bottom field
* field 1 = odd field = top field
*/
switch (rotation + mirror * 4) {
case OMAP_DSS_ROT_0:
*offset1 = 0;
if (field_offset)
*offset0 = *offset1 + field_offset * screen_width * ps;
else
*offset0 = *offset1;
*row_inc = pixinc(1 + (screen_width - fbw) +
(fieldmode ? screen_width : 0),
ps);
*pix_inc = pixinc(1, ps);
break;
case OMAP_DSS_ROT_90:
*offset1 = screen_width * (fbh - 1) * ps;
if (field_offset)
*offset0 = *offset1 + field_offset * ps;
else
*offset0 = *offset1;
*row_inc = pixinc(screen_width * (fbh - 1) + 1 +
(fieldmode ? 1 : 0), ps);
*pix_inc = pixinc(-screen_width, ps);
break;
case OMAP_DSS_ROT_180:
*offset1 = (screen_width * (fbh - 1) + fbw - 1) * ps;
if (field_offset)
*offset0 = *offset1 - field_offset * screen_width * ps;
else
*offset0 = *offset1;
*row_inc = pixinc(-1 -
(screen_width - fbw) -
(fieldmode ? screen_width : 0),
ps);
*pix_inc = pixinc(-1, ps);
break;
case OMAP_DSS_ROT_270:
*offset1 = (fbw - 1) * ps;
if (field_offset)
*offset0 = *offset1 - field_offset * ps;
else
*offset0 = *offset1;
*row_inc = pixinc(-screen_width * (fbh - 1) - 1 -
(fieldmode ? 1 : 0), ps);
*pix_inc = pixinc(screen_width, ps);
break;
/* mirroring */
case OMAP_DSS_ROT_0 + 4:
*offset1 = (fbw - 1) * ps;
if (field_offset)
*offset0 = *offset1 + field_offset * screen_width * ps;
else
*offset0 = *offset1;
*row_inc = pixinc(screen_width * 2 - 1 +
(fieldmode ? screen_width : 0),
ps);
*pix_inc = pixinc(-1, ps);
break;
case OMAP_DSS_ROT_90 + 4:
*offset1 = 0;
if (field_offset)
*offset0 = *offset1 + field_offset * ps;
else
*offset0 = *offset1;
*row_inc = pixinc(-screen_width * (fbh - 1) + 1 +
(fieldmode ? 1 : 0),
ps);
*pix_inc = pixinc(screen_width, ps);
break;
case OMAP_DSS_ROT_180 + 4:
*offset1 = screen_width * (fbh - 1) * ps;
if (field_offset)
*offset0 = *offset1 - field_offset * screen_width * ps;
else
*offset0 = *offset1;
*row_inc = pixinc(1 - screen_width * 2 -
(fieldmode ? screen_width : 0),
ps);
*pix_inc = pixinc(1, ps);
break;
case OMAP_DSS_ROT_270 + 4:
*offset1 = (screen_width * (fbh - 1) + fbw - 1) * ps;
if (field_offset)
*offset0 = *offset1 - field_offset * ps;
else
*offset0 = *offset1;
*row_inc = pixinc(screen_width * (fbh - 1) - 1 -
(fieldmode ? 1 : 0),
ps);
*pix_inc = pixinc(-screen_width, ps);
break;
default:
BUG();
}
}
static unsigned long calc_fclk_five_taps(enum omap_channel channel, u16 width,
u16 height, u16 out_width, u16 out_height,
enum omap_color_mode color_mode)
{
u32 fclk = 0;
u64 tmp, pclk = dispc_mgr_pclk_rate(channel);
if (height > out_height) {
struct omap_dss_device *dssdev = dispc_mgr_get_device(channel);
unsigned int ppl = dssdev->panel.timings.x_res;
tmp = pclk * height * out_width;
do_div(tmp, 2 * out_height * ppl);
fclk = tmp;
if (height > 2 * out_height) {
if (ppl == out_width)
return 0;
tmp = pclk * (height - 2 * out_height) * out_width;
do_div(tmp, 2 * out_height * (ppl - out_width));
fclk = max(fclk, (u32) tmp);
}
}
if (width > out_width) {
tmp = pclk * width;
do_div(tmp, out_width);
fclk = max(fclk, (u32) tmp);
if (color_mode == OMAP_DSS_COLOR_RGB24U)
fclk <<= 1;
}
return fclk;
}
static unsigned long calc_fclk(enum omap_channel channel, u16 width,
u16 height, u16 out_width, u16 out_height)
{
unsigned int hf, vf;
/*
* FIXME how to determine the 'A' factor
* for the no downscaling case ?
*/
if (width > 3 * out_width)
hf = 4;
else if (width > 2 * out_width)
hf = 3;
else if (width > out_width)
hf = 2;
else
hf = 1;
if (height > out_height)
vf = 2;
else
vf = 1;
return dispc_mgr_pclk_rate(channel) * vf * hf;
}
static int dispc_ovl_calc_scaling(enum omap_plane plane,
enum omap_channel channel, u16 width, u16 height,
u16 out_width, u16 out_height,
enum omap_color_mode color_mode, bool *five_taps)
{
struct omap_overlay *ovl = omap_dss_get_overlay(plane);
const int maxdownscale = dss_feat_get_param_max(FEAT_PARAM_DOWNSCALE);
unsigned long fclk = 0;
if (width == out_width && height == out_height)
return 0;
if ((ovl->caps & OMAP_DSS_OVL_CAP_SCALE) == 0)
return -EINVAL;
if (out_width < width / maxdownscale ||
out_width > width * 8)
return -EINVAL;
if (out_height < height / maxdownscale ||
out_height > height * 8)
return -EINVAL;
/* Must use 5-tap filter? */
*five_taps = height > out_height * 2;
if (!*five_taps) {
fclk = calc_fclk(channel, width, height, out_width,
out_height);
/* Try 5-tap filter if 3-tap fclk is too high */
if (cpu_is_omap34xx() && height > out_height &&
fclk > dispc_fclk_rate())
*five_taps = true;
}
if (width > (2048 >> *five_taps)) {
DSSERR("failed to set up scaling, fclk too low\n");
return -EINVAL;
}
if (*five_taps)
fclk = calc_fclk_five_taps(channel, width, height,
out_width, out_height, color_mode);
DSSDBG("required fclk rate = %lu Hz\n", fclk);
DSSDBG("current fclk rate = %lu Hz\n", dispc_fclk_rate());
if (!fclk || fclk > dispc_fclk_rate()) {
DSSERR("failed to set up scaling, "
"required fclk rate = %lu Hz, "
"current fclk rate = %lu Hz\n",
fclk, dispc_fclk_rate());
return -EINVAL;
}
return 0;
}
int dispc_ovl_setup(enum omap_plane plane, struct omap_overlay_info *oi,
bool ilace, enum omap_channel channel, bool replication,
u32 fifo_low, u32 fifo_high)
{
struct omap_overlay *ovl = omap_dss_get_overlay(plane);
bool five_taps = false;
bool fieldmode = 0;
int r, cconv = 0;
unsigned offset0, offset1;
s32 row_inc;
s32 pix_inc;
u16 frame_height = oi->height;
unsigned int field_offset = 0;
DSSDBG("dispc_ovl_setup %d, pa %x, pa_uv %x, sw %d, %d,%d, %dx%d -> "
"%dx%d, cmode %x, rot %d, mir %d, ilace %d chan %d repl %d "
"fifo_low %d fifo high %d\n", plane, oi->paddr, oi->p_uv_addr,
oi->screen_width, oi->pos_x, oi->pos_y, oi->width, oi->height,
oi->out_width, oi->out_height, oi->color_mode, oi->rotation,
oi->mirror, ilace, channel, replication, fifo_low, fifo_high);
if (oi->paddr == 0)
return -EINVAL;
if (ilace && oi->height == oi->out_height)
fieldmode = 1;
if (ilace) {
if (fieldmode)
oi->height /= 2;
oi->pos_y /= 2;
oi->out_height /= 2;
DSSDBG("adjusting for ilace: height %d, pos_y %d, "
"out_height %d\n",
oi->height, oi->pos_y, oi->out_height);
}
if (!dss_feat_color_mode_supported(plane, oi->color_mode))
return -EINVAL;
r = dispc_ovl_calc_scaling(plane, channel, oi->width, oi->height,
oi->out_width, oi->out_height, oi->color_mode,
&five_taps);
if (r)
return r;
if (oi->color_mode == OMAP_DSS_COLOR_YUV2 ||
oi->color_mode == OMAP_DSS_COLOR_UYVY ||
oi->color_mode == OMAP_DSS_COLOR_NV12)
cconv = 1;
if (ilace && !fieldmode) {
/*
* when downscaling the bottom field may have to start several
* source lines below the top field. Unfortunately ACCUI
* registers will only hold the fractional part of the offset
* so the integer part must be added to the base address of the
* bottom field.
*/
if (!oi->height || oi->height == oi->out_height)
field_offset = 0;
else
field_offset = oi->height / oi->out_height / 2;
}
/* Fields are independent but interleaved in memory. */
if (fieldmode)
field_offset = 1;
if (oi->rotation_type == OMAP_DSS_ROT_DMA)
calc_dma_rotation_offset(oi->rotation, oi->mirror,
oi->screen_width, oi->width, frame_height,
oi->color_mode, fieldmode, field_offset,
&offset0, &offset1, &row_inc, &pix_inc);
else
calc_vrfb_rotation_offset(oi->rotation, oi->mirror,
oi->screen_width, oi->width, frame_height,
oi->color_mode, fieldmode, field_offset,
&offset0, &offset1, &row_inc, &pix_inc);
DSSDBG("offset0 %u, offset1 %u, row_inc %d, pix_inc %d\n",
offset0, offset1, row_inc, pix_inc);
dispc_ovl_set_color_mode(plane, oi->color_mode);
dispc_ovl_set_ba0(plane, oi->paddr + offset0);
dispc_ovl_set_ba1(plane, oi->paddr + offset1);
if (OMAP_DSS_COLOR_NV12 == oi->color_mode) {
dispc_ovl_set_ba0_uv(plane, oi->p_uv_addr + offset0);
dispc_ovl_set_ba1_uv(plane, oi->p_uv_addr + offset1);
}
dispc_ovl_set_row_inc(plane, row_inc);
dispc_ovl_set_pix_inc(plane, pix_inc);
DSSDBG("%d,%d %dx%d -> %dx%d\n", oi->pos_x, oi->pos_y, oi->width,
oi->height, oi->out_width, oi->out_height);
dispc_ovl_set_pos(plane, oi->pos_x, oi->pos_y);
dispc_ovl_set_pic_size(plane, oi->width, oi->height);
if (ovl->caps & OMAP_DSS_OVL_CAP_SCALE) {
dispc_ovl_set_scaling(plane, oi->width, oi->height,
oi->out_width, oi->out_height,
ilace, five_taps, fieldmode,
oi->color_mode, oi->rotation);
dispc_ovl_set_vid_size(plane, oi->out_width, oi->out_height);
dispc_ovl_set_vid_color_conv(plane, cconv);
}
dispc_ovl_set_rotation_attrs(plane, oi->rotation, oi->mirror,
oi->color_mode);
dispc_ovl_set_zorder(plane, oi->zorder);
dispc_ovl_set_pre_mult_alpha(plane, oi->pre_mult_alpha);
dispc_ovl_setup_global_alpha(plane, oi->global_alpha);
dispc_ovl_set_channel_out(plane, channel);
dispc_ovl_enable_replication(plane, replication);
dispc_ovl_set_fifo_threshold(plane, fifo_low, fifo_high);
return 0;
}
int dispc_ovl_enable(enum omap_plane plane, bool enable)
{
DSSDBG("dispc_enable_plane %d, %d\n", plane, enable);
REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), enable ? 1 : 0, 0, 0);
return 0;
}
static void dispc_disable_isr(void *data, u32 mask)
{
struct completion *compl = data;
complete(compl);
}
static void _enable_lcd_out(enum omap_channel channel, bool enable)
{
if (channel == OMAP_DSS_CHANNEL_LCD2)
REG_FLD_MOD(DISPC_CONTROL2, enable ? 1 : 0, 0, 0);
else
REG_FLD_MOD(DISPC_CONTROL, enable ? 1 : 0, 0, 0);
}
static void dispc_mgr_enable_lcd_out(enum omap_channel channel, bool enable)
{
struct completion frame_done_completion;
bool is_on;
int r;
u32 irq;
/* When we disable LCD output, we need to wait until frame is done.
* Otherwise the DSS is still working, and turning off the clocks
* prevents DSS from going to OFF mode */
is_on = channel == OMAP_DSS_CHANNEL_LCD2 ?
REG_GET(DISPC_CONTROL2, 0, 0) :
REG_GET(DISPC_CONTROL, 0, 0);
irq = channel == OMAP_DSS_CHANNEL_LCD2 ? DISPC_IRQ_FRAMEDONE2 :
DISPC_IRQ_FRAMEDONE;
if (!enable && is_on) {
init_completion(&frame_done_completion);
r = omap_dispc_register_isr(dispc_disable_isr,
&frame_done_completion, irq);
if (r)
DSSERR("failed to register FRAMEDONE isr\n");
}
_enable_lcd_out(channel, enable);
if (!enable && is_on) {
if (!wait_for_completion_timeout(&frame_done_completion,
msecs_to_jiffies(100)))
DSSERR("timeout waiting for FRAME DONE\n");
r = omap_dispc_unregister_isr(dispc_disable_isr,
&frame_done_completion, irq);
if (r)
DSSERR("failed to unregister FRAMEDONE isr\n");
}
}
static void _enable_digit_out(bool enable)
{
REG_FLD_MOD(DISPC_CONTROL, enable ? 1 : 0, 1, 1);
}
static void dispc_mgr_enable_digit_out(bool enable)
{
struct completion frame_done_completion;
enum dss_hdmi_venc_clk_source_select src;
int r, i;
u32 irq_mask;
int num_irqs;
if (REG_GET(DISPC_CONTROL, 1, 1) == enable)
return;
src = dss_get_hdmi_venc_clk_source();
if (enable) {
unsigned long flags;
/* When we enable digit output, we'll get an extra digit
* sync lost interrupt, that we need to ignore */
spin_lock_irqsave(&dispc.irq_lock, flags);
dispc.irq_error_mask &= ~DISPC_IRQ_SYNC_LOST_DIGIT;
_omap_dispc_set_irqs();
spin_unlock_irqrestore(&dispc.irq_lock, flags);
}
/* When we disable digit output, we need to wait until fields are done.
* Otherwise the DSS is still working, and turning off the clocks
* prevents DSS from going to OFF mode. And when enabling, we need to
* wait for the extra sync losts */
init_completion(&frame_done_completion);
if (src == DSS_HDMI_M_PCLK && enable == false) {
irq_mask = DISPC_IRQ_FRAMEDONETV;
num_irqs = 1;
} else {
irq_mask = DISPC_IRQ_EVSYNC_EVEN | DISPC_IRQ_EVSYNC_ODD;
/* XXX I understand from TRM that we should only wait for the
* current field to complete. But it seems we have to wait for
* both fields */
num_irqs = 2;
}
r = omap_dispc_register_isr(dispc_disable_isr, &frame_done_completion,
irq_mask);
if (r)
DSSERR("failed to register %x isr\n", irq_mask);
_enable_digit_out(enable);
for (i = 0; i < num_irqs; ++i) {
if (!wait_for_completion_timeout(&frame_done_completion,
msecs_to_jiffies(100)))
DSSERR("timeout waiting for digit out to %s\n",
enable ? "start" : "stop");
}
r = omap_dispc_unregister_isr(dispc_disable_isr, &frame_done_completion,
irq_mask);
if (r)
DSSERR("failed to unregister %x isr\n", irq_mask);
if (enable) {
unsigned long flags;
spin_lock_irqsave(&dispc.irq_lock, flags);
dispc.irq_error_mask |= DISPC_IRQ_SYNC_LOST_DIGIT;
dispc_write_reg(DISPC_IRQSTATUS, DISPC_IRQ_SYNC_LOST_DIGIT);
_omap_dispc_set_irqs();
spin_unlock_irqrestore(&dispc.irq_lock, flags);
}
}
bool dispc_mgr_is_enabled(enum omap_channel channel)
{
if (channel == OMAP_DSS_CHANNEL_LCD)
return !!REG_GET(DISPC_CONTROL, 0, 0);
else if (channel == OMAP_DSS_CHANNEL_DIGIT)
return !!REG_GET(DISPC_CONTROL, 1, 1);
else if (channel == OMAP_DSS_CHANNEL_LCD2)
return !!REG_GET(DISPC_CONTROL2, 0, 0);
else
BUG();
}
void dispc_mgr_enable(enum omap_channel channel, bool enable)
{
if (dispc_mgr_is_lcd(channel))
dispc_mgr_enable_lcd_out(channel, enable);
else if (channel == OMAP_DSS_CHANNEL_DIGIT)
dispc_mgr_enable_digit_out(enable);
else
BUG();
}
void dispc_lcd_enable_signal_polarity(bool act_high)
{
if (!dss_has_feature(FEAT_LCDENABLEPOL))
return;
REG_FLD_MOD(DISPC_CONTROL, act_high ? 1 : 0, 29, 29);
}
void dispc_lcd_enable_signal(bool enable)
{
if (!dss_has_feature(FEAT_LCDENABLESIGNAL))
return;
REG_FLD_MOD(DISPC_CONTROL, enable ? 1 : 0, 28, 28);
}
void dispc_pck_free_enable(bool enable)
{
if (!dss_has_feature(FEAT_PCKFREEENABLE))
return;
REG_FLD_MOD(DISPC_CONTROL, enable ? 1 : 0, 27, 27);
}
void dispc_mgr_enable_fifohandcheck(enum omap_channel channel, bool enable)
{
if (channel == OMAP_DSS_CHANNEL_LCD2)
REG_FLD_MOD(DISPC_CONFIG2, enable ? 1 : 0, 16, 16);
else
REG_FLD_MOD(DISPC_CONFIG, enable ? 1 : 0, 16, 16);
}
void dispc_mgr_set_lcd_display_type(enum omap_channel channel,
enum omap_lcd_display_type type)
{
int mode;
switch (type) {
case OMAP_DSS_LCD_DISPLAY_STN:
mode = 0;
break;
case OMAP_DSS_LCD_DISPLAY_TFT:
mode = 1;
break;
default:
BUG();
return;
}
if (channel == OMAP_DSS_CHANNEL_LCD2)
REG_FLD_MOD(DISPC_CONTROL2, mode, 3, 3);
else
REG_FLD_MOD(DISPC_CONTROL, mode, 3, 3);
}
void dispc_set_loadmode(enum omap_dss_load_mode mode)
{
REG_FLD_MOD(DISPC_CONFIG, mode, 2, 1);
}
void dispc_mgr_set_default_color(enum omap_channel channel, u32 color)
{
dispc_write_reg(DISPC_DEFAULT_COLOR(channel), color);
}
u32 dispc_mgr_get_default_color(enum omap_channel channel)
{
u32 l;
BUG_ON(channel != OMAP_DSS_CHANNEL_DIGIT &&
channel != OMAP_DSS_CHANNEL_LCD &&
channel != OMAP_DSS_CHANNEL_LCD2);
l = dispc_read_reg(DISPC_DEFAULT_COLOR(channel));
return l;
}
void dispc_mgr_set_trans_key(enum omap_channel ch,
enum omap_dss_trans_key_type type,
u32 trans_key)
{
if (ch == OMAP_DSS_CHANNEL_LCD)
REG_FLD_MOD(DISPC_CONFIG, type, 11, 11);
else if (ch == OMAP_DSS_CHANNEL_DIGIT)
REG_FLD_MOD(DISPC_CONFIG, type, 13, 13);
else /* OMAP_DSS_CHANNEL_LCD2 */
REG_FLD_MOD(DISPC_CONFIG2, type, 11, 11);
dispc_write_reg(DISPC_TRANS_COLOR(ch), trans_key);
}
void dispc_mgr_get_trans_key(enum omap_channel ch,
enum omap_dss_trans_key_type *type,
u32 *trans_key)
{
if (type) {
if (ch == OMAP_DSS_CHANNEL_LCD)
*type = REG_GET(DISPC_CONFIG, 11, 11);
else if (ch == OMAP_DSS_CHANNEL_DIGIT)
*type = REG_GET(DISPC_CONFIG, 13, 13);
else if (ch == OMAP_DSS_CHANNEL_LCD2)
*type = REG_GET(DISPC_CONFIG2, 11, 11);
else
BUG();
}
if (trans_key)
*trans_key = dispc_read_reg(DISPC_TRANS_COLOR(ch));
}
void dispc_mgr_enable_trans_key(enum omap_channel ch, bool enable)
{
if (ch == OMAP_DSS_CHANNEL_LCD)
REG_FLD_MOD(DISPC_CONFIG, enable, 10, 10);
else if (ch == OMAP_DSS_CHANNEL_DIGIT)
REG_FLD_MOD(DISPC_CONFIG, enable, 12, 12);
else /* OMAP_DSS_CHANNEL_LCD2 */
REG_FLD_MOD(DISPC_CONFIG2, enable, 10, 10);
}
void dispc_mgr_enable_alpha_fixed_zorder(enum omap_channel ch, bool enable)
{
if (!dss_has_feature(FEAT_ALPHA_FIXED_ZORDER))
return;
if (ch == OMAP_DSS_CHANNEL_LCD)
REG_FLD_MOD(DISPC_CONFIG, enable, 18, 18);
else if (ch == OMAP_DSS_CHANNEL_DIGIT)
REG_FLD_MOD(DISPC_CONFIG, enable, 19, 19);
}
bool dispc_mgr_alpha_fixed_zorder_enabled(enum omap_channel ch)
{
bool enabled;
if (!dss_has_feature(FEAT_ALPHA_FIXED_ZORDER))
return false;
if (ch == OMAP_DSS_CHANNEL_LCD)
enabled = REG_GET(DISPC_CONFIG, 18, 18);
else if (ch == OMAP_DSS_CHANNEL_DIGIT)
enabled = REG_GET(DISPC_CONFIG, 19, 19);
else
BUG();
return enabled;
}
bool dispc_mgr_trans_key_enabled(enum omap_channel ch)
{
bool enabled;
if (ch == OMAP_DSS_CHANNEL_LCD)
enabled = REG_GET(DISPC_CONFIG, 10, 10);
else if (ch == OMAP_DSS_CHANNEL_DIGIT)
enabled = REG_GET(DISPC_CONFIG, 12, 12);
else if (ch == OMAP_DSS_CHANNEL_LCD2)
enabled = REG_GET(DISPC_CONFIG2, 10, 10);
else
BUG();
return enabled;
}
void dispc_mgr_set_tft_data_lines(enum omap_channel channel, u8 data_lines)
{
int code;
switch (data_lines) {
case 12:
code = 0;
break;
case 16:
code = 1;
break;
case 18:
code = 2;
break;
case 24:
code = 3;
break;
default:
BUG();
return;
}
if (channel == OMAP_DSS_CHANNEL_LCD2)
REG_FLD_MOD(DISPC_CONTROL2, code, 9, 8);
else
REG_FLD_MOD(DISPC_CONTROL, code, 9, 8);
}
void dispc_mgr_set_io_pad_mode(enum dss_io_pad_mode mode)
{
u32 l;
int gpout0, gpout1;
switch (mode) {
case DSS_IO_PAD_MODE_RESET:
gpout0 = 0;
gpout1 = 0;
break;
case DSS_IO_PAD_MODE_RFBI:
gpout0 = 1;
gpout1 = 0;
break;
case DSS_IO_PAD_MODE_BYPASS:
gpout0 = 1;
gpout1 = 1;
break;
default:
BUG();
return;
}
l = dispc_read_reg(DISPC_CONTROL);
l = FLD_MOD(l, gpout0, 15, 15);
l = FLD_MOD(l, gpout1, 16, 16);
dispc_write_reg(DISPC_CONTROL, l);
}
void dispc_mgr_enable_stallmode(enum omap_channel channel, bool enable)
{
if (channel == OMAP_DSS_CHANNEL_LCD2)
REG_FLD_MOD(DISPC_CONTROL2, enable, 11, 11);
else
REG_FLD_MOD(DISPC_CONTROL, enable, 11, 11);
}
static bool _dispc_lcd_timings_ok(int hsw, int hfp, int hbp,
int vsw, int vfp, int vbp)
{
if (cpu_is_omap24xx() || omap_rev() < OMAP3430_REV_ES3_0) {
if (hsw < 1 || hsw > 64 ||
hfp < 1 || hfp > 256 ||
hbp < 1 || hbp > 256 ||
vsw < 1 || vsw > 64 ||
vfp < 0 || vfp > 255 ||
vbp < 0 || vbp > 255)
return false;
} else {
if (hsw < 1 || hsw > 256 ||
hfp < 1 || hfp > 4096 ||
hbp < 1 || hbp > 4096 ||
vsw < 1 || vsw > 256 ||
vfp < 0 || vfp > 4095 ||
vbp < 0 || vbp > 4095)
return false;
}
return true;
}
bool dispc_lcd_timings_ok(struct omap_video_timings *timings)
{
return _dispc_lcd_timings_ok(timings->hsw, timings->hfp,
timings->hbp, timings->vsw,
timings->vfp, timings->vbp);
}
static void _dispc_mgr_set_lcd_timings(enum omap_channel channel, int hsw,
int hfp, int hbp, int vsw, int vfp, int vbp)
{
u32 timing_h, timing_v;
if (cpu_is_omap24xx() || omap_rev() < OMAP3430_REV_ES3_0) {
timing_h = FLD_VAL(hsw-1, 5, 0) | FLD_VAL(hfp-1, 15, 8) |
FLD_VAL(hbp-1, 27, 20);
timing_v = FLD_VAL(vsw-1, 5, 0) | FLD_VAL(vfp, 15, 8) |
FLD_VAL(vbp, 27, 20);
} else {
timing_h = FLD_VAL(hsw-1, 7, 0) | FLD_VAL(hfp-1, 19, 8) |
FLD_VAL(hbp-1, 31, 20);
timing_v = FLD_VAL(vsw-1, 7, 0) | FLD_VAL(vfp, 19, 8) |
FLD_VAL(vbp, 31, 20);
}
dispc_write_reg(DISPC_TIMING_H(channel), timing_h);
dispc_write_reg(DISPC_TIMING_V(channel), timing_v);
}
/* change name to mode? */
void dispc_mgr_set_lcd_timings(enum omap_channel channel,
struct omap_video_timings *timings)
{
unsigned xtot, ytot;
unsigned long ht, vt;
if (!_dispc_lcd_timings_ok(timings->hsw, timings->hfp,
timings->hbp, timings->vsw,
timings->vfp, timings->vbp))
BUG();
_dispc_mgr_set_lcd_timings(channel, timings->hsw, timings->hfp,
timings->hbp, timings->vsw, timings->vfp,
timings->vbp);
dispc_mgr_set_lcd_size(channel, timings->x_res, timings->y_res);
xtot = timings->x_res + timings->hfp + timings->hsw + timings->hbp;
ytot = timings->y_res + timings->vfp + timings->vsw + timings->vbp;
ht = (timings->pixel_clock * 1000) / xtot;
vt = (timings->pixel_clock * 1000) / xtot / ytot;
DSSDBG("channel %d xres %u yres %u\n", channel, timings->x_res,
timings->y_res);
DSSDBG("pck %u\n", timings->pixel_clock);
DSSDBG("hsw %d hfp %d hbp %d vsw %d vfp %d vbp %d\n",
timings->hsw, timings->hfp, timings->hbp,
timings->vsw, timings->vfp, timings->vbp);
DSSDBG("hsync %luHz, vsync %luHz\n", ht, vt);
}
static void dispc_mgr_set_lcd_divisor(enum omap_channel channel, u16 lck_div,
u16 pck_div)
{
BUG_ON(lck_div < 1);
BUG_ON(pck_div < 1);
dispc_write_reg(DISPC_DIVISORo(channel),
FLD_VAL(lck_div, 23, 16) | FLD_VAL(pck_div, 7, 0));
}
static void dispc_mgr_get_lcd_divisor(enum omap_channel channel, int *lck_div,
int *pck_div)
{
u32 l;
l = dispc_read_reg(DISPC_DIVISORo(channel));
*lck_div = FLD_GET(l, 23, 16);
*pck_div = FLD_GET(l, 7, 0);
}
unsigned long dispc_fclk_rate(void)
{
struct platform_device *dsidev;
unsigned long r = 0;
switch (dss_get_dispc_clk_source()) {
case OMAP_DSS_CLK_SRC_FCK:
r = clk_get_rate(dispc.dss_clk);
break;
case OMAP_DSS_CLK_SRC_DSI_PLL_HSDIV_DISPC:
dsidev = dsi_get_dsidev_from_id(0);
r = dsi_get_pll_hsdiv_dispc_rate(dsidev);
break;
case OMAP_DSS_CLK_SRC_DSI2_PLL_HSDIV_DISPC:
dsidev = dsi_get_dsidev_from_id(1);
r = dsi_get_pll_hsdiv_dispc_rate(dsidev);
break;
default:
BUG();
}
return r;
}
unsigned long dispc_mgr_lclk_rate(enum omap_channel channel)
{
struct platform_device *dsidev;
int lcd;
unsigned long r;
u32 l;
l = dispc_read_reg(DISPC_DIVISORo(channel));
lcd = FLD_GET(l, 23, 16);
switch (dss_get_lcd_clk_source(channel)) {
case OMAP_DSS_CLK_SRC_FCK:
r = clk_get_rate(dispc.dss_clk);
break;
case OMAP_DSS_CLK_SRC_DSI_PLL_HSDIV_DISPC:
dsidev = dsi_get_dsidev_from_id(0);
r = dsi_get_pll_hsdiv_dispc_rate(dsidev);
break;
case OMAP_DSS_CLK_SRC_DSI2_PLL_HSDIV_DISPC:
dsidev = dsi_get_dsidev_from_id(1);
r = dsi_get_pll_hsdiv_dispc_rate(dsidev);
break;
default:
BUG();
}
return r / lcd;
}
unsigned long dispc_mgr_pclk_rate(enum omap_channel channel)
{
unsigned long r;
if (dispc_mgr_is_lcd(channel)) {
int pcd;
u32 l;
l = dispc_read_reg(DISPC_DIVISORo(channel));
pcd = FLD_GET(l, 7, 0);
r = dispc_mgr_lclk_rate(channel);
return r / pcd;
} else {
struct omap_dss_device *dssdev =
dispc_mgr_get_device(channel);
switch (dssdev->type) {
case OMAP_DISPLAY_TYPE_VENC:
return venc_get_pixel_clock();
case OMAP_DISPLAY_TYPE_HDMI:
return hdmi_get_pixel_clock();
default:
BUG();
}
}
}
void dispc_dump_clocks(struct seq_file *s)
{
int lcd, pcd;
u32 l;
enum omap_dss_clk_source dispc_clk_src = dss_get_dispc_clk_source();
enum omap_dss_clk_source lcd_clk_src;
if (dispc_runtime_get())
return;
seq_printf(s, "- DISPC -\n");
seq_printf(s, "dispc fclk source = %s (%s)\n",
dss_get_generic_clk_source_name(dispc_clk_src),
dss_feat_get_clk_source_name(dispc_clk_src));
seq_printf(s, "fck\t\t%-16lu\n", dispc_fclk_rate());
if (dss_has_feature(FEAT_CORE_CLK_DIV)) {
seq_printf(s, "- DISPC-CORE-CLK -\n");
l = dispc_read_reg(DISPC_DIVISOR);
lcd = FLD_GET(l, 23, 16);
seq_printf(s, "lck\t\t%-16lulck div\t%u\n",
(dispc_fclk_rate()/lcd), lcd);
}
seq_printf(s, "- LCD1 -\n");
lcd_clk_src = dss_get_lcd_clk_source(OMAP_DSS_CHANNEL_LCD);
seq_printf(s, "lcd1_clk source = %s (%s)\n",
dss_get_generic_clk_source_name(lcd_clk_src),
dss_feat_get_clk_source_name(lcd_clk_src));
dispc_mgr_get_lcd_divisor(OMAP_DSS_CHANNEL_LCD, &lcd, &pcd);
seq_printf(s, "lck\t\t%-16lulck div\t%u\n",
dispc_mgr_lclk_rate(OMAP_DSS_CHANNEL_LCD), lcd);
seq_printf(s, "pck\t\t%-16lupck div\t%u\n",
dispc_mgr_pclk_rate(OMAP_DSS_CHANNEL_LCD), pcd);
if (dss_has_feature(FEAT_MGR_LCD2)) {
seq_printf(s, "- LCD2 -\n");
lcd_clk_src = dss_get_lcd_clk_source(OMAP_DSS_CHANNEL_LCD2);
seq_printf(s, "lcd2_clk source = %s (%s)\n",
dss_get_generic_clk_source_name(lcd_clk_src),
dss_feat_get_clk_source_name(lcd_clk_src));
dispc_mgr_get_lcd_divisor(OMAP_DSS_CHANNEL_LCD2, &lcd, &pcd);
seq_printf(s, "lck\t\t%-16lulck div\t%u\n",
dispc_mgr_lclk_rate(OMAP_DSS_CHANNEL_LCD2), lcd);
seq_printf(s, "pck\t\t%-16lupck div\t%u\n",
dispc_mgr_pclk_rate(OMAP_DSS_CHANNEL_LCD2), pcd);
}
dispc_runtime_put();
}
#ifdef CONFIG_OMAP2_DSS_COLLECT_IRQ_STATS
void dispc_dump_irqs(struct seq_file *s)
{
unsigned long flags;
struct dispc_irq_stats stats;
spin_lock_irqsave(&dispc.irq_stats_lock, flags);
stats = dispc.irq_stats;
memset(&dispc.irq_stats, 0, sizeof(dispc.irq_stats));
dispc.irq_stats.last_reset = jiffies;
spin_unlock_irqrestore(&dispc.irq_stats_lock, flags);
seq_printf(s, "period %u ms\n",
jiffies_to_msecs(jiffies - stats.last_reset));
seq_printf(s, "irqs %d\n", stats.irq_count);
#define PIS(x) \
seq_printf(s, "%-20s %10d\n", #x, stats.irqs[ffs(DISPC_IRQ_##x)-1]);
PIS(FRAMEDONE);
PIS(VSYNC);
PIS(EVSYNC_EVEN);
PIS(EVSYNC_ODD);
PIS(ACBIAS_COUNT_STAT);
PIS(PROG_LINE_NUM);
PIS(GFX_FIFO_UNDERFLOW);
PIS(GFX_END_WIN);
PIS(PAL_GAMMA_MASK);
PIS(OCP_ERR);
PIS(VID1_FIFO_UNDERFLOW);
PIS(VID1_END_WIN);
PIS(VID2_FIFO_UNDERFLOW);
PIS(VID2_END_WIN);
if (dss_feat_get_num_ovls() > 3) {
PIS(VID3_FIFO_UNDERFLOW);
PIS(VID3_END_WIN);
}
PIS(SYNC_LOST);
PIS(SYNC_LOST_DIGIT);
PIS(WAKEUP);
if (dss_has_feature(FEAT_MGR_LCD2)) {
PIS(FRAMEDONE2);
PIS(VSYNC2);
PIS(ACBIAS_COUNT_STAT2);
PIS(SYNC_LOST2);
}
#undef PIS
}
#endif
void dispc_dump_regs(struct seq_file *s)
{
int i, j;
const char *mgr_names[] = {
[OMAP_DSS_CHANNEL_LCD] = "LCD",
[OMAP_DSS_CHANNEL_DIGIT] = "TV",
[OMAP_DSS_CHANNEL_LCD2] = "LCD2",
};
const char *ovl_names[] = {
[OMAP_DSS_GFX] = "GFX",
[OMAP_DSS_VIDEO1] = "VID1",
[OMAP_DSS_VIDEO2] = "VID2",
[OMAP_DSS_VIDEO3] = "VID3",
};
const char **p_names;
#define DUMPREG(r) seq_printf(s, "%-50s %08x\n", #r, dispc_read_reg(r))
if (dispc_runtime_get())
return;
/* DISPC common registers */
DUMPREG(DISPC_REVISION);
DUMPREG(DISPC_SYSCONFIG);
DUMPREG(DISPC_SYSSTATUS);
DUMPREG(DISPC_IRQSTATUS);
DUMPREG(DISPC_IRQENABLE);
DUMPREG(DISPC_CONTROL);
DUMPREG(DISPC_CONFIG);
DUMPREG(DISPC_CAPABLE);
DUMPREG(DISPC_LINE_STATUS);
DUMPREG(DISPC_LINE_NUMBER);
if (dss_has_feature(FEAT_ALPHA_FIXED_ZORDER) ||
dss_has_feature(FEAT_ALPHA_FREE_ZORDER))
DUMPREG(DISPC_GLOBAL_ALPHA);
if (dss_has_feature(FEAT_MGR_LCD2)) {
DUMPREG(DISPC_CONTROL2);
DUMPREG(DISPC_CONFIG2);
}
#undef DUMPREG
#define DISPC_REG(i, name) name(i)
#define DUMPREG(i, r) seq_printf(s, "%s(%s)%*s %08x\n", #r, p_names[i], \
48 - strlen(#r) - strlen(p_names[i]), " ", \
dispc_read_reg(DISPC_REG(i, r)))
p_names = mgr_names;
/* DISPC channel specific registers */
for (i = 0; i < dss_feat_get_num_mgrs(); i++) {
DUMPREG(i, DISPC_DEFAULT_COLOR);
DUMPREG(i, DISPC_TRANS_COLOR);
DUMPREG(i, DISPC_SIZE_MGR);
if (i == OMAP_DSS_CHANNEL_DIGIT)
continue;
DUMPREG(i, DISPC_DEFAULT_COLOR);
DUMPREG(i, DISPC_TRANS_COLOR);
DUMPREG(i, DISPC_TIMING_H);
DUMPREG(i, DISPC_TIMING_V);
DUMPREG(i, DISPC_POL_FREQ);
DUMPREG(i, DISPC_DIVISORo);
DUMPREG(i, DISPC_SIZE_MGR);
DUMPREG(i, DISPC_DATA_CYCLE1);
DUMPREG(i, DISPC_DATA_CYCLE2);
DUMPREG(i, DISPC_DATA_CYCLE3);
if (dss_has_feature(FEAT_CPR)) {
DUMPREG(i, DISPC_CPR_COEF_R);
DUMPREG(i, DISPC_CPR_COEF_G);
DUMPREG(i, DISPC_CPR_COEF_B);
}
}
p_names = ovl_names;
for (i = 0; i < dss_feat_get_num_ovls(); i++) {
DUMPREG(i, DISPC_OVL_BA0);
DUMPREG(i, DISPC_OVL_BA1);
DUMPREG(i, DISPC_OVL_POSITION);
DUMPREG(i, DISPC_OVL_SIZE);
DUMPREG(i, DISPC_OVL_ATTRIBUTES);
DUMPREG(i, DISPC_OVL_FIFO_THRESHOLD);
DUMPREG(i, DISPC_OVL_FIFO_SIZE_STATUS);
DUMPREG(i, DISPC_OVL_ROW_INC);
DUMPREG(i, DISPC_OVL_PIXEL_INC);
if (dss_has_feature(FEAT_PRELOAD))
DUMPREG(i, DISPC_OVL_PRELOAD);
if (i == OMAP_DSS_GFX) {
DUMPREG(i, DISPC_OVL_WINDOW_SKIP);
DUMPREG(i, DISPC_OVL_TABLE_BA);
continue;
}
DUMPREG(i, DISPC_OVL_FIR);
DUMPREG(i, DISPC_OVL_PICTURE_SIZE);
DUMPREG(i, DISPC_OVL_ACCU0);
DUMPREG(i, DISPC_OVL_ACCU1);
if (dss_has_feature(FEAT_HANDLE_UV_SEPARATE)) {
DUMPREG(i, DISPC_OVL_BA0_UV);
DUMPREG(i, DISPC_OVL_BA1_UV);
DUMPREG(i, DISPC_OVL_FIR2);
DUMPREG(i, DISPC_OVL_ACCU2_0);
DUMPREG(i, DISPC_OVL_ACCU2_1);
}
if (dss_has_feature(FEAT_ATTR2))
DUMPREG(i, DISPC_OVL_ATTRIBUTES2);
if (dss_has_feature(FEAT_PRELOAD))
DUMPREG(i, DISPC_OVL_PRELOAD);
}
#undef DISPC_REG
#undef DUMPREG
#define DISPC_REG(plane, name, i) name(plane, i)
#define DUMPREG(plane, name, i) \
seq_printf(s, "%s_%d(%s)%*s %08x\n", #name, i, p_names[plane], \
46 - strlen(#name) - strlen(p_names[plane]), " ", \
dispc_read_reg(DISPC_REG(plane, name, i)))
/* Video pipeline coefficient registers */
/* start from OMAP_DSS_VIDEO1 */
for (i = 1; i < dss_feat_get_num_ovls(); i++) {
for (j = 0; j < 8; j++)
DUMPREG(i, DISPC_OVL_FIR_COEF_H, j);
for (j = 0; j < 8; j++)
DUMPREG(i, DISPC_OVL_FIR_COEF_HV, j);
for (j = 0; j < 5; j++)
DUMPREG(i, DISPC_OVL_CONV_COEF, j);
if (dss_has_feature(FEAT_FIR_COEF_V)) {
for (j = 0; j < 8; j++)
DUMPREG(i, DISPC_OVL_FIR_COEF_V, j);
}
if (dss_has_feature(FEAT_HANDLE_UV_SEPARATE)) {
for (j = 0; j < 8; j++)
DUMPREG(i, DISPC_OVL_FIR_COEF_H2, j);
for (j = 0; j < 8; j++)
DUMPREG(i, DISPC_OVL_FIR_COEF_HV2, j);
for (j = 0; j < 8; j++)
DUMPREG(i, DISPC_OVL_FIR_COEF_V2, j);
}
}
dispc_runtime_put();
#undef DISPC_REG
#undef DUMPREG
}
static void _dispc_mgr_set_pol_freq(enum omap_channel channel, bool onoff,
bool rf, bool ieo, bool ipc, bool ihs, bool ivs, u8 acbi,
u8 acb)
{
u32 l = 0;
DSSDBG("onoff %d rf %d ieo %d ipc %d ihs %d ivs %d acbi %d acb %d\n",
onoff, rf, ieo, ipc, ihs, ivs, acbi, acb);
l |= FLD_VAL(onoff, 17, 17);
l |= FLD_VAL(rf, 16, 16);
l |= FLD_VAL(ieo, 15, 15);
l |= FLD_VAL(ipc, 14, 14);
l |= FLD_VAL(ihs, 13, 13);
l |= FLD_VAL(ivs, 12, 12);
l |= FLD_VAL(acbi, 11, 8);
l |= FLD_VAL(acb, 7, 0);
dispc_write_reg(DISPC_POL_FREQ(channel), l);
}
void dispc_mgr_set_pol_freq(enum omap_channel channel,
enum omap_panel_config config, u8 acbi, u8 acb)
{
_dispc_mgr_set_pol_freq(channel, (config & OMAP_DSS_LCD_ONOFF) != 0,
(config & OMAP_DSS_LCD_RF) != 0,
(config & OMAP_DSS_LCD_IEO) != 0,
(config & OMAP_DSS_LCD_IPC) != 0,
(config & OMAP_DSS_LCD_IHS) != 0,
(config & OMAP_DSS_LCD_IVS) != 0,
acbi, acb);
}
/* with fck as input clock rate, find dispc dividers that produce req_pck */
void dispc_find_clk_divs(bool is_tft, unsigned long req_pck, unsigned long fck,
struct dispc_clock_info *cinfo)
{
u16 pcd_min, pcd_max;
unsigned long best_pck;
u16 best_ld, cur_ld;
u16 best_pd, cur_pd;
pcd_min = dss_feat_get_param_min(FEAT_PARAM_DSS_PCD);
pcd_max = dss_feat_get_param_max(FEAT_PARAM_DSS_PCD);
if (!is_tft)
pcd_min = 3;
best_pck = 0;
best_ld = 0;
best_pd = 0;
for (cur_ld = 1; cur_ld <= 255; ++cur_ld) {
unsigned long lck = fck / cur_ld;
for (cur_pd = pcd_min; cur_pd <= pcd_max; ++cur_pd) {
unsigned long pck = lck / cur_pd;
long old_delta = abs(best_pck - req_pck);
long new_delta = abs(pck - req_pck);
if (best_pck == 0 || new_delta < old_delta) {
best_pck = pck;
best_ld = cur_ld;
best_pd = cur_pd;
if (pck == req_pck)
goto found;
}
if (pck < req_pck)
break;
}
if (lck / pcd_min < req_pck)
break;
}
found:
cinfo->lck_div = best_ld;
cinfo->pck_div = best_pd;
cinfo->lck = fck / cinfo->lck_div;
cinfo->pck = cinfo->lck / cinfo->pck_div;
}
/* calculate clock rates using dividers in cinfo */
int dispc_calc_clock_rates(unsigned long dispc_fclk_rate,
struct dispc_clock_info *cinfo)
{
if (cinfo->lck_div > 255 || cinfo->lck_div == 0)
return -EINVAL;
if (cinfo->pck_div < 1 || cinfo->pck_div > 255)
return -EINVAL;
cinfo->lck = dispc_fclk_rate / cinfo->lck_div;
cinfo->pck = cinfo->lck / cinfo->pck_div;
return 0;
}
int dispc_mgr_set_clock_div(enum omap_channel channel,
struct dispc_clock_info *cinfo)
{
DSSDBG("lck = %lu (%u)\n", cinfo->lck, cinfo->lck_div);
DSSDBG("pck = %lu (%u)\n", cinfo->pck, cinfo->pck_div);
dispc_mgr_set_lcd_divisor(channel, cinfo->lck_div, cinfo->pck_div);
return 0;
}
int dispc_mgr_get_clock_div(enum omap_channel channel,
struct dispc_clock_info *cinfo)
{
unsigned long fck;
fck = dispc_fclk_rate();
cinfo->lck_div = REG_GET(DISPC_DIVISORo(channel), 23, 16);
cinfo->pck_div = REG_GET(DISPC_DIVISORo(channel), 7, 0);
cinfo->lck = fck / cinfo->lck_div;
cinfo->pck = cinfo->lck / cinfo->pck_div;
return 0;
}
/* dispc.irq_lock has to be locked by the caller */
static void _omap_dispc_set_irqs(void)
{
u32 mask;
u32 old_mask;
int i;
struct omap_dispc_isr_data *isr_data;
mask = dispc.irq_error_mask;
for (i = 0; i < DISPC_MAX_NR_ISRS; i++) {
isr_data = &dispc.registered_isr[i];
if (isr_data->isr == NULL)
continue;
mask |= isr_data->mask;
}
old_mask = dispc_read_reg(DISPC_IRQENABLE);
/* clear the irqstatus for newly enabled irqs */
dispc_write_reg(DISPC_IRQSTATUS, (mask ^ old_mask) & mask);
dispc_write_reg(DISPC_IRQENABLE, mask);
}
int omap_dispc_register_isr(omap_dispc_isr_t isr, void *arg, u32 mask)
{
int i;
int ret;
unsigned long flags;
struct omap_dispc_isr_data *isr_data;
if (isr == NULL)
return -EINVAL;
spin_lock_irqsave(&dispc.irq_lock, flags);
/* check for duplicate entry */
for (i = 0; i < DISPC_MAX_NR_ISRS; i++) {
isr_data = &dispc.registered_isr[i];
if (isr_data->isr == isr && isr_data->arg == arg &&
isr_data->mask == mask) {
ret = -EINVAL;
goto err;
}
}
isr_data = NULL;
ret = -EBUSY;
for (i = 0; i < DISPC_MAX_NR_ISRS; i++) {
isr_data = &dispc.registered_isr[i];
if (isr_data->isr != NULL)
continue;
isr_data->isr = isr;
isr_data->arg = arg;
isr_data->mask = mask;
ret = 0;
break;
}
if (ret)
goto err;
_omap_dispc_set_irqs();
spin_unlock_irqrestore(&dispc.irq_lock, flags);
return 0;
err:
spin_unlock_irqrestore(&dispc.irq_lock, flags);
return ret;
}
EXPORT_SYMBOL(omap_dispc_register_isr);
int omap_dispc_unregister_isr(omap_dispc_isr_t isr, void *arg, u32 mask)
{
int i;
unsigned long flags;
int ret = -EINVAL;
struct omap_dispc_isr_data *isr_data;
spin_lock_irqsave(&dispc.irq_lock, flags);
for (i = 0; i < DISPC_MAX_NR_ISRS; i++) {
isr_data = &dispc.registered_isr[i];
if (isr_data->isr != isr || isr_data->arg != arg ||
isr_data->mask != mask)
continue;
/* found the correct isr */
isr_data->isr = NULL;
isr_data->arg = NULL;
isr_data->mask = 0;
ret = 0;
break;
}
if (ret == 0)
_omap_dispc_set_irqs();
spin_unlock_irqrestore(&dispc.irq_lock, flags);
return ret;
}
EXPORT_SYMBOL(omap_dispc_unregister_isr);
#ifdef DEBUG
static void print_irq_status(u32 status)
{
if ((status & dispc.irq_error_mask) == 0)
return;
printk(KERN_DEBUG "DISPC IRQ: 0x%x: ", status);
#define PIS(x) \
if (status & DISPC_IRQ_##x) \
printk(#x " ");
PIS(GFX_FIFO_UNDERFLOW);
PIS(OCP_ERR);
PIS(VID1_FIFO_UNDERFLOW);
PIS(VID2_FIFO_UNDERFLOW);
if (dss_feat_get_num_ovls() > 3)
PIS(VID3_FIFO_UNDERFLOW);
PIS(SYNC_LOST);
PIS(SYNC_LOST_DIGIT);
if (dss_has_feature(FEAT_MGR_LCD2))
PIS(SYNC_LOST2);
#undef PIS
printk("\n");
}
#endif
/* Called from dss.c. Note that we don't touch clocks here,
* but we presume they are on because we got an IRQ. However,
* an irq handler may turn the clocks off, so we may not have
* clock later in the function. */
static irqreturn_t omap_dispc_irq_handler(int irq, void *arg)
{
int i;
u32 irqstatus, irqenable;
u32 handledirqs = 0;
u32 unhandled_errors;
struct omap_dispc_isr_data *isr_data;
struct omap_dispc_isr_data registered_isr[DISPC_MAX_NR_ISRS];
spin_lock(&dispc.irq_lock);
irqstatus = dispc_read_reg(DISPC_IRQSTATUS);
irqenable = dispc_read_reg(DISPC_IRQENABLE);
/* IRQ is not for us */
if (!(irqstatus & irqenable)) {
spin_unlock(&dispc.irq_lock);
return IRQ_NONE;
}
#ifdef CONFIG_OMAP2_DSS_COLLECT_IRQ_STATS
spin_lock(&dispc.irq_stats_lock);
dispc.irq_stats.irq_count++;
dss_collect_irq_stats(irqstatus, dispc.irq_stats.irqs);
spin_unlock(&dispc.irq_stats_lock);
#endif
#ifdef DEBUG
if (dss_debug)
print_irq_status(irqstatus);
#endif
/* Ack the interrupt. Do it here before clocks are possibly turned
* off */
dispc_write_reg(DISPC_IRQSTATUS, irqstatus);
/* flush posted write */
dispc_read_reg(DISPC_IRQSTATUS);
/* make a copy and unlock, so that isrs can unregister
* themselves */
memcpy(registered_isr, dispc.registered_isr,
sizeof(registered_isr));
spin_unlock(&dispc.irq_lock);
for (i = 0; i < DISPC_MAX_NR_ISRS; i++) {
isr_data = &registered_isr[i];
if (!isr_data->isr)
continue;
if (isr_data->mask & irqstatus) {
isr_data->isr(isr_data->arg, irqstatus);
handledirqs |= isr_data->mask;
}
}
spin_lock(&dispc.irq_lock);
unhandled_errors = irqstatus & ~handledirqs & dispc.irq_error_mask;
if (unhandled_errors) {
dispc.error_irqs |= unhandled_errors;
dispc.irq_error_mask &= ~unhandled_errors;
_omap_dispc_set_irqs();
schedule_work(&dispc.error_work);
}
spin_unlock(&dispc.irq_lock);
return IRQ_HANDLED;
}
static void dispc_error_worker(struct work_struct *work)
{
int i;
u32 errors;
unsigned long flags;
static const unsigned fifo_underflow_bits[] = {
DISPC_IRQ_GFX_FIFO_UNDERFLOW,
DISPC_IRQ_VID1_FIFO_UNDERFLOW,
DISPC_IRQ_VID2_FIFO_UNDERFLOW,
DISPC_IRQ_VID3_FIFO_UNDERFLOW,
};
static const unsigned sync_lost_bits[] = {
DISPC_IRQ_SYNC_LOST,
DISPC_IRQ_SYNC_LOST_DIGIT,
DISPC_IRQ_SYNC_LOST2,
};
spin_lock_irqsave(&dispc.irq_lock, flags);
errors = dispc.error_irqs;
dispc.error_irqs = 0;
spin_unlock_irqrestore(&dispc.irq_lock, flags);
dispc_runtime_get();
for (i = 0; i < omap_dss_get_num_overlays(); ++i) {
struct omap_overlay *ovl;
unsigned bit;
ovl = omap_dss_get_overlay(i);
bit = fifo_underflow_bits[i];
if (bit & errors) {
DSSERR("FIFO UNDERFLOW on %s, disabling the overlay\n",
ovl->name);
dispc_ovl_enable(ovl->id, false);
dispc_mgr_go(ovl->manager->id);
mdelay(50);
}
}
for (i = 0; i < omap_dss_get_num_overlay_managers(); ++i) {
struct omap_overlay_manager *mgr;
unsigned bit;
mgr = omap_dss_get_overlay_manager(i);
bit = sync_lost_bits[i];
if (bit & errors) {
struct omap_dss_device *dssdev = mgr->device;
bool enable;
DSSERR("SYNC_LOST on channel %s, restarting the output "
"with video overlays disabled\n",
mgr->name);
enable = dssdev->state == OMAP_DSS_DISPLAY_ACTIVE;
dssdev->driver->disable(dssdev);
for (i = 0; i < omap_dss_get_num_overlays(); ++i) {
struct omap_overlay *ovl;
ovl = omap_dss_get_overlay(i);
if (ovl->id != OMAP_DSS_GFX &&
ovl->manager == mgr)
dispc_ovl_enable(ovl->id, false);
}
dispc_mgr_go(mgr->id);
mdelay(50);
if (enable)
dssdev->driver->enable(dssdev);
}
}
if (errors & DISPC_IRQ_OCP_ERR) {
DSSERR("OCP_ERR\n");
for (i = 0; i < omap_dss_get_num_overlay_managers(); ++i) {
struct omap_overlay_manager *mgr;
mgr = omap_dss_get_overlay_manager(i);
mgr->device->driver->disable(mgr->device);
}
}
spin_lock_irqsave(&dispc.irq_lock, flags);
dispc.irq_error_mask |= errors;
_omap_dispc_set_irqs();
spin_unlock_irqrestore(&dispc.irq_lock, flags);
dispc_runtime_put();
}
int omap_dispc_wait_for_irq_timeout(u32 irqmask, unsigned long timeout)
{
void dispc_irq_wait_handler(void *data, u32 mask)
{
complete((struct completion *)data);
}
int r;
DECLARE_COMPLETION_ONSTACK(completion);
r = omap_dispc_register_isr(dispc_irq_wait_handler, &completion,
irqmask);
if (r)
return r;
timeout = wait_for_completion_timeout(&completion, timeout);
omap_dispc_unregister_isr(dispc_irq_wait_handler, &completion, irqmask);
if (timeout == 0)
return -ETIMEDOUT;
if (timeout == -ERESTARTSYS)
return -ERESTARTSYS;
return 0;
}
int omap_dispc_wait_for_irq_interruptible_timeout(u32 irqmask,
unsigned long timeout)
{
void dispc_irq_wait_handler(void *data, u32 mask)
{
complete((struct completion *)data);
}
int r;
DECLARE_COMPLETION_ONSTACK(completion);
r = omap_dispc_register_isr(dispc_irq_wait_handler, &completion,
irqmask);
if (r)
return r;
timeout = wait_for_completion_interruptible_timeout(&completion,
timeout);
omap_dispc_unregister_isr(dispc_irq_wait_handler, &completion, irqmask);
if (timeout == 0)
return -ETIMEDOUT;
if (timeout == -ERESTARTSYS)
return -ERESTARTSYS;
return 0;
}
#ifdef CONFIG_OMAP2_DSS_FAKE_VSYNC
void dispc_fake_vsync_irq(void)
{
u32 irqstatus = DISPC_IRQ_VSYNC;
int i;
WARN_ON(!in_interrupt());
for (i = 0; i < DISPC_MAX_NR_ISRS; i++) {
struct omap_dispc_isr_data *isr_data;
isr_data = &dispc.registered_isr[i];
if (!isr_data->isr)
continue;
if (isr_data->mask & irqstatus)
isr_data->isr(isr_data->arg, irqstatus);
}
}
#endif
static void _omap_dispc_initialize_irq(void)
{
unsigned long flags;
spin_lock_irqsave(&dispc.irq_lock, flags);
memset(dispc.registered_isr, 0, sizeof(dispc.registered_isr));
dispc.irq_error_mask = DISPC_IRQ_MASK_ERROR;
if (dss_has_feature(FEAT_MGR_LCD2))
dispc.irq_error_mask |= DISPC_IRQ_SYNC_LOST2;
if (dss_feat_get_num_ovls() > 3)
dispc.irq_error_mask |= DISPC_IRQ_VID3_FIFO_UNDERFLOW;
/* there's SYNC_LOST_DIGIT waiting after enabling the DSS,
* so clear it */
dispc_write_reg(DISPC_IRQSTATUS, dispc_read_reg(DISPC_IRQSTATUS));
_omap_dispc_set_irqs();
spin_unlock_irqrestore(&dispc.irq_lock, flags);
}
void dispc_enable_sidle(void)
{
REG_FLD_MOD(DISPC_SYSCONFIG, 2, 4, 3); /* SIDLEMODE: smart idle */
}
void dispc_disable_sidle(void)
{
REG_FLD_MOD(DISPC_SYSCONFIG, 1, 4, 3); /* SIDLEMODE: no idle */
}
static void _omap_dispc_initial_config(void)
{
u32 l;
/* Exclusively enable DISPC_CORE_CLK and set divider to 1 */
if (dss_has_feature(FEAT_CORE_CLK_DIV)) {
l = dispc_read_reg(DISPC_DIVISOR);
/* Use DISPC_DIVISOR.LCD, instead of DISPC_DIVISOR1.LCD */
l = FLD_MOD(l, 1, 0, 0);
l = FLD_MOD(l, 1, 23, 16);
dispc_write_reg(DISPC_DIVISOR, l);
}
/* FUNCGATED */
if (dss_has_feature(FEAT_FUNCGATED))
REG_FLD_MOD(DISPC_CONFIG, 1, 9, 9);
/* L3 firewall setting: enable access to OCM RAM */
/* XXX this should be somewhere in plat-omap */
if (cpu_is_omap24xx())
__raw_writel(0x402000b0, OMAP2_L3_IO_ADDRESS(0x680050a0));
_dispc_setup_color_conv_coef();
dispc_set_loadmode(OMAP_DSS_LOAD_FRAME_ONLY);
dispc_read_plane_fifo_sizes();
dispc_configure_burst_sizes();
dispc_ovl_enable_zorder_planes();
}
/* DISPC HW IP initialisation */
static int omap_dispchw_probe(struct platform_device *pdev)
{
u32 rev;
int r = 0;
struct resource *dispc_mem;
struct clk *clk;
dispc.pdev = pdev;
clk = clk_get(&pdev->dev, "fck");
if (IS_ERR(clk)) {
DSSERR("can't get fck\n");
r = PTR_ERR(clk);
goto err_get_clk;
}
dispc.dss_clk = clk;
spin_lock_init(&dispc.irq_lock);
#ifdef CONFIG_OMAP2_DSS_COLLECT_IRQ_STATS
spin_lock_init(&dispc.irq_stats_lock);
dispc.irq_stats.last_reset = jiffies;
#endif
INIT_WORK(&dispc.error_work, dispc_error_worker);
dispc_mem = platform_get_resource(dispc.pdev, IORESOURCE_MEM, 0);
if (!dispc_mem) {
DSSERR("can't get IORESOURCE_MEM DISPC\n");
r = -EINVAL;
goto err_ioremap;
}
dispc.base = ioremap(dispc_mem->start, resource_size(dispc_mem));
if (!dispc.base) {
DSSERR("can't ioremap DISPC\n");
r = -ENOMEM;
goto err_ioremap;
}
dispc.irq = platform_get_irq(dispc.pdev, 0);
if (dispc.irq < 0) {
DSSERR("platform_get_irq failed\n");
r = -ENODEV;
goto err_irq;
}
r = request_irq(dispc.irq, omap_dispc_irq_handler, IRQF_SHARED,
"OMAP DISPC", dispc.pdev);
if (r < 0) {
DSSERR("request_irq failed\n");
goto err_irq;
}
pm_runtime_enable(&pdev->dev);
r = dispc_runtime_get();
if (r)
goto err_runtime_get;
_omap_dispc_initial_config();
_omap_dispc_initialize_irq();
rev = dispc_read_reg(DISPC_REVISION);
dev_dbg(&pdev->dev, "OMAP DISPC rev %d.%d\n",
FLD_GET(rev, 7, 4), FLD_GET(rev, 3, 0));
dispc_runtime_put();
return 0;
err_runtime_get:
pm_runtime_disable(&pdev->dev);
free_irq(dispc.irq, dispc.pdev);
err_irq:
iounmap(dispc.base);
err_ioremap:
clk_put(dispc.dss_clk);
err_get_clk:
return r;
}
static int omap_dispchw_remove(struct platform_device *pdev)
{
pm_runtime_disable(&pdev->dev);
clk_put(dispc.dss_clk);
free_irq(dispc.irq, dispc.pdev);
iounmap(dispc.base);
return 0;
}
static int dispc_runtime_suspend(struct device *dev)
{
dispc_save_context();
dss_runtime_put();
return 0;
}
static int dispc_runtime_resume(struct device *dev)
{
int r;
r = dss_runtime_get();
if (r < 0)
return r;
dispc_restore_context();
return 0;
}
static const struct dev_pm_ops dispc_pm_ops = {
.runtime_suspend = dispc_runtime_suspend,
.runtime_resume = dispc_runtime_resume,
};
static struct platform_driver omap_dispchw_driver = {
.probe = omap_dispchw_probe,
.remove = omap_dispchw_remove,
.driver = {
.name = "omapdss_dispc",
.owner = THIS_MODULE,
.pm = &dispc_pm_ops,
},
};
int dispc_init_platform_driver(void)
{
return platform_driver_register(&omap_dispchw_driver);
}
void dispc_uninit_platform_driver(void)
{
return platform_driver_unregister(&omap_dispchw_driver);
}
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