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linux/drivers/video/omap2/dss/dispc.c
archit taneja affe360d13 OMAP: DSS2: Have separate irq handlers for DISPC and DSI 
Currently, the core DSS platform device requests for an irq line for OMAP2 and
OMAP3. Make DISPC and DSI platform devices request for a shared IRQ line.

On OMAP3, the logical OR of DSI and DISPC interrupt lines goes to the MPU. There
is a register DSS_IRQSTATUS which tells if the interrupt came from DISPC or DSI.

On OMAP2, there is no DSI, only DISPC interrupts goto the MPU. There is no
DSS_IRQSTATUS register.

Hence, it makes more sense to have separate irq handlers corresponding to the
DSS sub modules instead of having a common handler.

Since on OMAP3 the logical OR of the lines goes to MPU, the irq line is shared
among the IRQ handlers.

The hwmod irq info has been removed for DSS to DISPC and DSI for OMAP2 and OMAP3
hwmod databases. The Probes of DISPC and DSI now request for irq handlers.

Signed-off-by: Archit Taneja <archit@ti.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2011-03-11 15:46:24 +02:00

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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/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 <plat/sram.h>
#include <plat/clock.h>
#include <plat/display.h>
#include "dss.h"
#include "dss_features.h"
/* DISPC */
#define DISPC_SZ_REGS SZ_4K
struct dispc_reg { u16 idx; };
#define DISPC_REG(idx) ((const struct dispc_reg) { idx })
/*
* DISPC common registers and
* DISPC channel registers , ch = 0 for LCD, ch = 1 for
* DIGIT, and ch = 2 for LCD2
*/
#define DISPC_REVISION DISPC_REG(0x0000)
#define DISPC_SYSCONFIG DISPC_REG(0x0010)
#define DISPC_SYSSTATUS DISPC_REG(0x0014)
#define DISPC_IRQSTATUS DISPC_REG(0x0018)
#define DISPC_IRQENABLE DISPC_REG(0x001C)
#define DISPC_CONTROL DISPC_REG(0x0040)
#define DISPC_CONTROL2 DISPC_REG(0x0238)
#define DISPC_CONFIG DISPC_REG(0x0044)
#define DISPC_CONFIG2 DISPC_REG(0x0620)
#define DISPC_CAPABLE DISPC_REG(0x0048)
#define DISPC_DEFAULT_COLOR(ch) DISPC_REG(ch == 0 ? 0x004C : \
(ch == 1 ? 0x0050 : 0x03AC))
#define DISPC_TRANS_COLOR(ch) DISPC_REG(ch == 0 ? 0x0054 : \
(ch == 1 ? 0x0058 : 0x03B0))
#define DISPC_LINE_STATUS DISPC_REG(0x005C)
#define DISPC_LINE_NUMBER DISPC_REG(0x0060)
#define DISPC_TIMING_H(ch) DISPC_REG(ch != 2 ? 0x0064 : 0x0400)
#define DISPC_TIMING_V(ch) DISPC_REG(ch != 2 ? 0x0068 : 0x0404)
#define DISPC_POL_FREQ(ch) DISPC_REG(ch != 2 ? 0x006C : 0x0408)
#define DISPC_DIVISOR(ch) DISPC_REG(ch != 2 ? 0x0070 : 0x040C)
#define DISPC_GLOBAL_ALPHA DISPC_REG(0x0074)
#define DISPC_SIZE_DIG DISPC_REG(0x0078)
#define DISPC_SIZE_LCD(ch) DISPC_REG(ch != 2 ? 0x007C : 0x03CC)
/* DISPC GFX plane */
#define DISPC_GFX_BA0 DISPC_REG(0x0080)
#define DISPC_GFX_BA1 DISPC_REG(0x0084)
#define DISPC_GFX_POSITION DISPC_REG(0x0088)
#define DISPC_GFX_SIZE DISPC_REG(0x008C)
#define DISPC_GFX_ATTRIBUTES DISPC_REG(0x00A0)
#define DISPC_GFX_FIFO_THRESHOLD DISPC_REG(0x00A4)
#define DISPC_GFX_FIFO_SIZE_STATUS DISPC_REG(0x00A8)
#define DISPC_GFX_ROW_INC DISPC_REG(0x00AC)
#define DISPC_GFX_PIXEL_INC DISPC_REG(0x00B0)
#define DISPC_GFX_WINDOW_SKIP DISPC_REG(0x00B4)
#define DISPC_GFX_TABLE_BA DISPC_REG(0x00B8)
#define DISPC_DATA_CYCLE1(ch) DISPC_REG(ch != 2 ? 0x01D4 : 0x03C0)
#define DISPC_DATA_CYCLE2(ch) DISPC_REG(ch != 2 ? 0x01D8 : 0x03C4)
#define DISPC_DATA_CYCLE3(ch) DISPC_REG(ch != 2 ? 0x01DC : 0x03C8)
#define DISPC_CPR_COEF_R(ch) DISPC_REG(ch != 2 ? 0x0220 : 0x03BC)
#define DISPC_CPR_COEF_G(ch) DISPC_REG(ch != 2 ? 0x0224 : 0x03B8)
#define DISPC_CPR_COEF_B(ch) DISPC_REG(ch != 2 ? 0x0228 : 0x03B4)
#define DISPC_GFX_PRELOAD DISPC_REG(0x022C)
/* DISPC Video plane, n = 0 for VID1 and n = 1 for VID2 */
#define DISPC_VID_REG(n, idx) DISPC_REG(0x00BC + (n)*0x90 + idx)
#define DISPC_VID_BA0(n) DISPC_VID_REG(n, 0x0000)
#define DISPC_VID_BA1(n) DISPC_VID_REG(n, 0x0004)
#define DISPC_VID_POSITION(n) DISPC_VID_REG(n, 0x0008)
#define DISPC_VID_SIZE(n) DISPC_VID_REG(n, 0x000C)
#define DISPC_VID_ATTRIBUTES(n) DISPC_VID_REG(n, 0x0010)
#define DISPC_VID_FIFO_THRESHOLD(n) DISPC_VID_REG(n, 0x0014)
#define DISPC_VID_FIFO_SIZE_STATUS(n) DISPC_VID_REG(n, 0x0018)
#define DISPC_VID_ROW_INC(n) DISPC_VID_REG(n, 0x001C)
#define DISPC_VID_PIXEL_INC(n) DISPC_VID_REG(n, 0x0020)
#define DISPC_VID_FIR(n) DISPC_VID_REG(n, 0x0024)
#define DISPC_VID_PICTURE_SIZE(n) DISPC_VID_REG(n, 0x0028)
#define DISPC_VID_ACCU0(n) DISPC_VID_REG(n, 0x002C)
#define DISPC_VID_ACCU1(n) DISPC_VID_REG(n, 0x0030)
/* coef index i = {0, 1, 2, 3, 4, 5, 6, 7} */
#define DISPC_VID_FIR_COEF_H(n, i) DISPC_REG(0x00F0 + (n)*0x90 + (i)*0x8)
/* coef index i = {0, 1, 2, 3, 4, 5, 6, 7} */
#define DISPC_VID_FIR_COEF_HV(n, i) DISPC_REG(0x00F4 + (n)*0x90 + (i)*0x8)
/* coef index i = {0, 1, 2, 3, 4} */
#define DISPC_VID_CONV_COEF(n, i) DISPC_REG(0x0130 + (n)*0x90 + (i)*0x4)
/* coef index i = {0, 1, 2, 3, 4, 5, 6, 7} */
#define DISPC_VID_FIR_COEF_V(n, i) DISPC_REG(0x01E0 + (n)*0x20 + (i)*0x4)
#define DISPC_VID_PRELOAD(n) DISPC_REG(0x230 + (n)*0x04)
#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;
};
#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))
static const struct dispc_reg dispc_reg_att[] = { DISPC_GFX_ATTRIBUTES,
DISPC_VID_ATTRIBUTES(0),
DISPC_VID_ATTRIBUTES(1) };
struct dispc_irq_stats {
unsigned long last_reset;
unsigned irq_count;
unsigned irqs[32];
};
static struct {
struct platform_device *pdev;
void __iomem *base;
int irq;
u32 fifo_size[3];
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;
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;
static void _omap_dispc_set_irqs(void);
static inline void dispc_write_reg(const struct dispc_reg idx, u32 val)
{
__raw_writel(val, dispc.base + idx.idx);
}
static inline u32 dispc_read_reg(const struct dispc_reg idx)
{
return __raw_readl(dispc.base + idx.idx);
}
#define SR(reg) \
dispc.ctx[(DISPC_##reg).idx / sizeof(u32)] = dispc_read_reg(DISPC_##reg)
#define RR(reg) \
dispc_write_reg(DISPC_##reg, dispc.ctx[(DISPC_##reg).idx / sizeof(u32)])
void dispc_save_context(void)
{
if (cpu_is_omap24xx())
return;
SR(SYSCONFIG);
SR(IRQENABLE);
SR(CONTROL);
SR(CONFIG);
SR(DEFAULT_COLOR(0));
SR(DEFAULT_COLOR(1));
SR(TRANS_COLOR(0));
SR(TRANS_COLOR(1));
SR(LINE_NUMBER);
SR(TIMING_H(0));
SR(TIMING_V(0));
SR(POL_FREQ(0));
SR(DIVISOR(0));
SR(GLOBAL_ALPHA);
SR(SIZE_DIG);
SR(SIZE_LCD(0));
if (dss_has_feature(FEAT_MGR_LCD2)) {
SR(CONTROL2);
SR(DEFAULT_COLOR(2));
SR(TRANS_COLOR(2));
SR(SIZE_LCD(2));
SR(TIMING_H(2));
SR(TIMING_V(2));
SR(POL_FREQ(2));
SR(DIVISOR(2));
SR(CONFIG2);
}
SR(GFX_BA0);
SR(GFX_BA1);
SR(GFX_POSITION);
SR(GFX_SIZE);
SR(GFX_ATTRIBUTES);
SR(GFX_FIFO_THRESHOLD);
SR(GFX_ROW_INC);
SR(GFX_PIXEL_INC);
SR(GFX_WINDOW_SKIP);
SR(GFX_TABLE_BA);
SR(DATA_CYCLE1(0));
SR(DATA_CYCLE2(0));
SR(DATA_CYCLE3(0));
SR(CPR_COEF_R(0));
SR(CPR_COEF_G(0));
SR(CPR_COEF_B(0));
if (dss_has_feature(FEAT_MGR_LCD2)) {
SR(CPR_COEF_B(2));
SR(CPR_COEF_G(2));
SR(CPR_COEF_R(2));
SR(DATA_CYCLE1(2));
SR(DATA_CYCLE2(2));
SR(DATA_CYCLE3(2));
}
SR(GFX_PRELOAD);
/* VID1 */
SR(VID_BA0(0));
SR(VID_BA1(0));
SR(VID_POSITION(0));
SR(VID_SIZE(0));
SR(VID_ATTRIBUTES(0));
SR(VID_FIFO_THRESHOLD(0));
SR(VID_ROW_INC(0));
SR(VID_PIXEL_INC(0));
SR(VID_FIR(0));
SR(VID_PICTURE_SIZE(0));
SR(VID_ACCU0(0));
SR(VID_ACCU1(0));
SR(VID_FIR_COEF_H(0, 0));
SR(VID_FIR_COEF_H(0, 1));
SR(VID_FIR_COEF_H(0, 2));
SR(VID_FIR_COEF_H(0, 3));
SR(VID_FIR_COEF_H(0, 4));
SR(VID_FIR_COEF_H(0, 5));
SR(VID_FIR_COEF_H(0, 6));
SR(VID_FIR_COEF_H(0, 7));
SR(VID_FIR_COEF_HV(0, 0));
SR(VID_FIR_COEF_HV(0, 1));
SR(VID_FIR_COEF_HV(0, 2));
SR(VID_FIR_COEF_HV(0, 3));
SR(VID_FIR_COEF_HV(0, 4));
SR(VID_FIR_COEF_HV(0, 5));
SR(VID_FIR_COEF_HV(0, 6));
SR(VID_FIR_COEF_HV(0, 7));
SR(VID_CONV_COEF(0, 0));
SR(VID_CONV_COEF(0, 1));
SR(VID_CONV_COEF(0, 2));
SR(VID_CONV_COEF(0, 3));
SR(VID_CONV_COEF(0, 4));
SR(VID_FIR_COEF_V(0, 0));
SR(VID_FIR_COEF_V(0, 1));
SR(VID_FIR_COEF_V(0, 2));
SR(VID_FIR_COEF_V(0, 3));
SR(VID_FIR_COEF_V(0, 4));
SR(VID_FIR_COEF_V(0, 5));
SR(VID_FIR_COEF_V(0, 6));
SR(VID_FIR_COEF_V(0, 7));
SR(VID_PRELOAD(0));
/* VID2 */
SR(VID_BA0(1));
SR(VID_BA1(1));
SR(VID_POSITION(1));
SR(VID_SIZE(1));
SR(VID_ATTRIBUTES(1));
SR(VID_FIFO_THRESHOLD(1));
SR(VID_ROW_INC(1));
SR(VID_PIXEL_INC(1));
SR(VID_FIR(1));
SR(VID_PICTURE_SIZE(1));
SR(VID_ACCU0(1));
SR(VID_ACCU1(1));
SR(VID_FIR_COEF_H(1, 0));
SR(VID_FIR_COEF_H(1, 1));
SR(VID_FIR_COEF_H(1, 2));
SR(VID_FIR_COEF_H(1, 3));
SR(VID_FIR_COEF_H(1, 4));
SR(VID_FIR_COEF_H(1, 5));
SR(VID_FIR_COEF_H(1, 6));
SR(VID_FIR_COEF_H(1, 7));
SR(VID_FIR_COEF_HV(1, 0));
SR(VID_FIR_COEF_HV(1, 1));
SR(VID_FIR_COEF_HV(1, 2));
SR(VID_FIR_COEF_HV(1, 3));
SR(VID_FIR_COEF_HV(1, 4));
SR(VID_FIR_COEF_HV(1, 5));
SR(VID_FIR_COEF_HV(1, 6));
SR(VID_FIR_COEF_HV(1, 7));
SR(VID_CONV_COEF(1, 0));
SR(VID_CONV_COEF(1, 1));
SR(VID_CONV_COEF(1, 2));
SR(VID_CONV_COEF(1, 3));
SR(VID_CONV_COEF(1, 4));
SR(VID_FIR_COEF_V(1, 0));
SR(VID_FIR_COEF_V(1, 1));
SR(VID_FIR_COEF_V(1, 2));
SR(VID_FIR_COEF_V(1, 3));
SR(VID_FIR_COEF_V(1, 4));
SR(VID_FIR_COEF_V(1, 5));
SR(VID_FIR_COEF_V(1, 6));
SR(VID_FIR_COEF_V(1, 7));
SR(VID_PRELOAD(1));
}
void dispc_restore_context(void)
{
RR(SYSCONFIG);
/*RR(IRQENABLE);*/
/*RR(CONTROL);*/
RR(CONFIG);
RR(DEFAULT_COLOR(0));
RR(DEFAULT_COLOR(1));
RR(TRANS_COLOR(0));
RR(TRANS_COLOR(1));
RR(LINE_NUMBER);
RR(TIMING_H(0));
RR(TIMING_V(0));
RR(POL_FREQ(0));
RR(DIVISOR(0));
RR(GLOBAL_ALPHA);
RR(SIZE_DIG);
RR(SIZE_LCD(0));
if (dss_has_feature(FEAT_MGR_LCD2)) {
RR(DEFAULT_COLOR(2));
RR(TRANS_COLOR(2));
RR(SIZE_LCD(2));
RR(TIMING_H(2));
RR(TIMING_V(2));
RR(POL_FREQ(2));
RR(DIVISOR(2));
RR(CONFIG2);
}
RR(GFX_BA0);
RR(GFX_BA1);
RR(GFX_POSITION);
RR(GFX_SIZE);
RR(GFX_ATTRIBUTES);
RR(GFX_FIFO_THRESHOLD);
RR(GFX_ROW_INC);
RR(GFX_PIXEL_INC);
RR(GFX_WINDOW_SKIP);
RR(GFX_TABLE_BA);
RR(DATA_CYCLE1(0));
RR(DATA_CYCLE2(0));
RR(DATA_CYCLE3(0));
RR(CPR_COEF_R(0));
RR(CPR_COEF_G(0));
RR(CPR_COEF_B(0));
if (dss_has_feature(FEAT_MGR_LCD2)) {
RR(DATA_CYCLE1(2));
RR(DATA_CYCLE2(2));
RR(DATA_CYCLE3(2));
RR(CPR_COEF_B(2));
RR(CPR_COEF_G(2));
RR(CPR_COEF_R(2));
}
RR(GFX_PRELOAD);
/* VID1 */
RR(VID_BA0(0));
RR(VID_BA1(0));
RR(VID_POSITION(0));
RR(VID_SIZE(0));
RR(VID_ATTRIBUTES(0));
RR(VID_FIFO_THRESHOLD(0));
RR(VID_ROW_INC(0));
RR(VID_PIXEL_INC(0));
RR(VID_FIR(0));
RR(VID_PICTURE_SIZE(0));
RR(VID_ACCU0(0));
RR(VID_ACCU1(0));
RR(VID_FIR_COEF_H(0, 0));
RR(VID_FIR_COEF_H(0, 1));
RR(VID_FIR_COEF_H(0, 2));
RR(VID_FIR_COEF_H(0, 3));
RR(VID_FIR_COEF_H(0, 4));
RR(VID_FIR_COEF_H(0, 5));
RR(VID_FIR_COEF_H(0, 6));
RR(VID_FIR_COEF_H(0, 7));
RR(VID_FIR_COEF_HV(0, 0));
RR(VID_FIR_COEF_HV(0, 1));
RR(VID_FIR_COEF_HV(0, 2));
RR(VID_FIR_COEF_HV(0, 3));
RR(VID_FIR_COEF_HV(0, 4));
RR(VID_FIR_COEF_HV(0, 5));
RR(VID_FIR_COEF_HV(0, 6));
RR(VID_FIR_COEF_HV(0, 7));
RR(VID_CONV_COEF(0, 0));
RR(VID_CONV_COEF(0, 1));
RR(VID_CONV_COEF(0, 2));
RR(VID_CONV_COEF(0, 3));
RR(VID_CONV_COEF(0, 4));
RR(VID_FIR_COEF_V(0, 0));
RR(VID_FIR_COEF_V(0, 1));
RR(VID_FIR_COEF_V(0, 2));
RR(VID_FIR_COEF_V(0, 3));
RR(VID_FIR_COEF_V(0, 4));
RR(VID_FIR_COEF_V(0, 5));
RR(VID_FIR_COEF_V(0, 6));
RR(VID_FIR_COEF_V(0, 7));
RR(VID_PRELOAD(0));
/* VID2 */
RR(VID_BA0(1));
RR(VID_BA1(1));
RR(VID_POSITION(1));
RR(VID_SIZE(1));
RR(VID_ATTRIBUTES(1));
RR(VID_FIFO_THRESHOLD(1));
RR(VID_ROW_INC(1));
RR(VID_PIXEL_INC(1));
RR(VID_FIR(1));
RR(VID_PICTURE_SIZE(1));
RR(VID_ACCU0(1));
RR(VID_ACCU1(1));
RR(VID_FIR_COEF_H(1, 0));
RR(VID_FIR_COEF_H(1, 1));
RR(VID_FIR_COEF_H(1, 2));
RR(VID_FIR_COEF_H(1, 3));
RR(VID_FIR_COEF_H(1, 4));
RR(VID_FIR_COEF_H(1, 5));
RR(VID_FIR_COEF_H(1, 6));
RR(VID_FIR_COEF_H(1, 7));
RR(VID_FIR_COEF_HV(1, 0));
RR(VID_FIR_COEF_HV(1, 1));
RR(VID_FIR_COEF_HV(1, 2));
RR(VID_FIR_COEF_HV(1, 3));
RR(VID_FIR_COEF_HV(1, 4));
RR(VID_FIR_COEF_HV(1, 5));
RR(VID_FIR_COEF_HV(1, 6));
RR(VID_FIR_COEF_HV(1, 7));
RR(VID_CONV_COEF(1, 0));
RR(VID_CONV_COEF(1, 1));
RR(VID_CONV_COEF(1, 2));
RR(VID_CONV_COEF(1, 3));
RR(VID_CONV_COEF(1, 4));
RR(VID_FIR_COEF_V(1, 0));
RR(VID_FIR_COEF_V(1, 1));
RR(VID_FIR_COEF_V(1, 2));
RR(VID_FIR_COEF_V(1, 3));
RR(VID_FIR_COEF_V(1, 4));
RR(VID_FIR_COEF_V(1, 5));
RR(VID_FIR_COEF_V(1, 6));
RR(VID_FIR_COEF_V(1, 7));
RR(VID_PRELOAD(1));
/* 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);
}
#undef SR
#undef RR
static inline void enable_clocks(bool enable)
{
if (enable)
dss_clk_enable(DSS_CLK_ICK | DSS_CLK_FCK);
else
dss_clk_disable(DSS_CLK_ICK | DSS_CLK_FCK);
}
bool dispc_go_busy(enum omap_channel channel)
{
int bit;
if (channel == OMAP_DSS_CHANNEL_LCD ||
channel == OMAP_DSS_CHANNEL_LCD2)
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_go(enum omap_channel channel)
{
int bit;
bool enable_bit, go_bit;
enable_clocks(1);
if (channel == OMAP_DSS_CHANNEL_LCD ||
channel == OMAP_DSS_CHANNEL_LCD2)
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)
goto end;
if (channel == OMAP_DSS_CHANNEL_LCD ||
channel == OMAP_DSS_CHANNEL_LCD2)
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);
goto end;
}
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);
end:
enable_clocks(0);
}
static void _dispc_write_firh_reg(enum omap_plane plane, int reg, u32 value)
{
BUG_ON(plane == OMAP_DSS_GFX);
dispc_write_reg(DISPC_VID_FIR_COEF_H(plane-1, reg), value);
}
static void _dispc_write_firhv_reg(enum omap_plane plane, int reg, u32 value)
{
BUG_ON(plane == OMAP_DSS_GFX);
dispc_write_reg(DISPC_VID_FIR_COEF_HV(plane-1, reg), value);
}
static void _dispc_write_firv_reg(enum omap_plane plane, int reg, u32 value)
{
BUG_ON(plane == OMAP_DSS_GFX);
dispc_write_reg(DISPC_VID_FIR_COEF_V(plane-1, reg), value);
}
static void _dispc_set_scale_coef(enum omap_plane plane, int hscaleup,
int vscaleup, int five_taps)
{
/* 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);
_dispc_write_firh_reg(plane, i, h);
_dispc_write_firhv_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);
_dispc_write_firv_reg(plane, i, v);
}
}
}
static void _dispc_setup_color_conv_coef(void)
{
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;
dispc_write_reg(DISPC_VID_CONV_COEF(0, 0), CVAL(ct->rcr, ct->ry));
dispc_write_reg(DISPC_VID_CONV_COEF(0, 1), CVAL(ct->gy, ct->rcb));
dispc_write_reg(DISPC_VID_CONV_COEF(0, 2), CVAL(ct->gcb, ct->gcr));
dispc_write_reg(DISPC_VID_CONV_COEF(0, 3), CVAL(ct->bcr, ct->by));
dispc_write_reg(DISPC_VID_CONV_COEF(0, 4), CVAL(0, ct->bcb));
dispc_write_reg(DISPC_VID_CONV_COEF(1, 0), CVAL(ct->rcr, ct->ry));
dispc_write_reg(DISPC_VID_CONV_COEF(1, 1), CVAL(ct->gy, ct->rcb));
dispc_write_reg(DISPC_VID_CONV_COEF(1, 2), CVAL(ct->gcb, ct->gcr));
dispc_write_reg(DISPC_VID_CONV_COEF(1, 3), CVAL(ct->bcr, ct->by));
dispc_write_reg(DISPC_VID_CONV_COEF(1, 4), CVAL(0, ct->bcb));
#undef CVAL
REG_FLD_MOD(DISPC_VID_ATTRIBUTES(0), ct->full_range, 11, 11);
REG_FLD_MOD(DISPC_VID_ATTRIBUTES(1), ct->full_range, 11, 11);
}
static void _dispc_set_plane_ba0(enum omap_plane plane, u32 paddr)
{
const struct dispc_reg ba0_reg[] = { DISPC_GFX_BA0,
DISPC_VID_BA0(0),
DISPC_VID_BA0(1) };
dispc_write_reg(ba0_reg[plane], paddr);
}
static void _dispc_set_plane_ba1(enum omap_plane plane, u32 paddr)
{
const struct dispc_reg ba1_reg[] = { DISPC_GFX_BA1,
DISPC_VID_BA1(0),
DISPC_VID_BA1(1) };
dispc_write_reg(ba1_reg[plane], paddr);
}
static void _dispc_set_plane_pos(enum omap_plane plane, int x, int y)
{
const struct dispc_reg pos_reg[] = { DISPC_GFX_POSITION,
DISPC_VID_POSITION(0),
DISPC_VID_POSITION(1) };
u32 val = FLD_VAL(y, 26, 16) | FLD_VAL(x, 10, 0);
dispc_write_reg(pos_reg[plane], val);
}
static void _dispc_set_pic_size(enum omap_plane plane, int width, int height)
{
const struct dispc_reg siz_reg[] = { DISPC_GFX_SIZE,
DISPC_VID_PICTURE_SIZE(0),
DISPC_VID_PICTURE_SIZE(1) };
u32 val = FLD_VAL(height - 1, 26, 16) | FLD_VAL(width - 1, 10, 0);
dispc_write_reg(siz_reg[plane], val);
}
static void _dispc_set_vid_size(enum omap_plane plane, int width, int height)
{
u32 val;
const struct dispc_reg vsi_reg[] = { DISPC_VID_SIZE(0),
DISPC_VID_SIZE(1) };
BUG_ON(plane == OMAP_DSS_GFX);
val = FLD_VAL(height - 1, 26, 16) | FLD_VAL(width - 1, 10, 0);
dispc_write_reg(vsi_reg[plane-1], val);
}
static void _dispc_set_pre_mult_alpha(enum omap_plane plane, bool enable)
{
if (!dss_has_feature(FEAT_PRE_MULT_ALPHA))
return;
if (!dss_has_feature(FEAT_GLOBAL_ALPHA_VID1) &&
plane == OMAP_DSS_VIDEO1)
return;
REG_FLD_MOD(dispc_reg_att[plane], enable ? 1 : 0, 28, 28);
}
static void _dispc_setup_global_alpha(enum omap_plane plane, u8 global_alpha)
{
if (!dss_has_feature(FEAT_GLOBAL_ALPHA))
return;
if (!dss_has_feature(FEAT_GLOBAL_ALPHA_VID1) &&
plane == OMAP_DSS_VIDEO1)
return;
if (plane == OMAP_DSS_GFX)
REG_FLD_MOD(DISPC_GLOBAL_ALPHA, global_alpha, 7, 0);
else if (plane == OMAP_DSS_VIDEO2)
REG_FLD_MOD(DISPC_GLOBAL_ALPHA, global_alpha, 23, 16);
}
static void _dispc_set_pix_inc(enum omap_plane plane, s32 inc)
{
const struct dispc_reg ri_reg[] = { DISPC_GFX_PIXEL_INC,
DISPC_VID_PIXEL_INC(0),
DISPC_VID_PIXEL_INC(1) };
dispc_write_reg(ri_reg[plane], inc);
}
static void _dispc_set_row_inc(enum omap_plane plane, s32 inc)
{
const struct dispc_reg ri_reg[] = { DISPC_GFX_ROW_INC,
DISPC_VID_ROW_INC(0),
DISPC_VID_ROW_INC(1) };
dispc_write_reg(ri_reg[plane], inc);
}
static void _dispc_set_color_mode(enum omap_plane plane,
enum omap_color_mode color_mode)
{
u32 m = 0;
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_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;
default:
BUG(); break;
}
REG_FLD_MOD(dispc_reg_att[plane], m, 4, 1);
}
static void _dispc_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:
shift = 16;
break;
default:
BUG();
return;
}
val = dispc_read_reg(dispc_reg_att[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_reg_att[plane], val);
}
void dispc_set_burst_size(enum omap_plane plane,
enum omap_burst_size burst_size)
{
int shift;
u32 val;
enable_clocks(1);
switch (plane) {
case OMAP_DSS_GFX:
shift = 6;
break;
case OMAP_DSS_VIDEO1:
case OMAP_DSS_VIDEO2:
shift = 14;
break;
default:
BUG();
return;
}
val = dispc_read_reg(dispc_reg_att[plane]);
val = FLD_MOD(val, burst_size, shift+1, shift);
dispc_write_reg(dispc_reg_att[plane], val);
enable_clocks(0);
}
static void _dispc_set_vid_color_conv(enum omap_plane plane, bool enable)
{
u32 val;
BUG_ON(plane == OMAP_DSS_GFX);
val = dispc_read_reg(dispc_reg_att[plane]);
val = FLD_MOD(val, enable, 9, 9);
dispc_write_reg(dispc_reg_att[plane], val);
}
void dispc_enable_replication(enum omap_plane plane, bool enable)
{
int bit;
if (plane == OMAP_DSS_GFX)
bit = 5;
else
bit = 10;
enable_clocks(1);
REG_FLD_MOD(dispc_reg_att[plane], enable, bit, bit);
enable_clocks(0);
}
void dispc_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);
enable_clocks(1);
dispc_write_reg(DISPC_SIZE_LCD(channel), val);
enable_clocks(0);
}
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);
enable_clocks(1);
dispc_write_reg(DISPC_SIZE_DIG, val);
enable_clocks(0);
}
static void dispc_read_plane_fifo_sizes(void)
{
const struct dispc_reg fsz_reg[] = { DISPC_GFX_FIFO_SIZE_STATUS,
DISPC_VID_FIFO_SIZE_STATUS(0),
DISPC_VID_FIFO_SIZE_STATUS(1) };
u32 size;
int plane;
u8 start, end;
enable_clocks(1);
dss_feat_get_reg_field(FEAT_REG_FIFOSIZE, &start, &end);
for (plane = 0; plane < ARRAY_SIZE(dispc.fifo_size); ++plane) {
size = FLD_GET(dispc_read_reg(fsz_reg[plane]), start, end);
dispc.fifo_size[plane] = size;
}
enable_clocks(0);
}
u32 dispc_get_plane_fifo_size(enum omap_plane plane)
{
return dispc.fifo_size[plane];
}
void dispc_setup_plane_fifo(enum omap_plane plane, u32 low, u32 high)
{
const struct dispc_reg ftrs_reg[] = { DISPC_GFX_FIFO_THRESHOLD,
DISPC_VID_FIFO_THRESHOLD(0),
DISPC_VID_FIFO_THRESHOLD(1) };
u8 hi_start, hi_end, lo_start, lo_end;
enable_clocks(1);
DSSDBG("fifo(%d) low/high old %u/%u, new %u/%u\n",
plane,
REG_GET(ftrs_reg[plane], 11, 0),
REG_GET(ftrs_reg[plane], 27, 16),
low, high);
dss_feat_get_reg_field(FEAT_REG_FIFOHIGHTHRESHOLD, &hi_start, &hi_end);
dss_feat_get_reg_field(FEAT_REG_FIFOLOWTHRESHOLD, &lo_start, &lo_end);
dispc_write_reg(ftrs_reg[plane],
FLD_VAL(high, hi_start, hi_end) |
FLD_VAL(low, lo_start, lo_end));
enable_clocks(0);
}
void dispc_enable_fifomerge(bool enable)
{
enable_clocks(1);
DSSDBG("FIFO merge %s\n", enable ? "enabled" : "disabled");
REG_FLD_MOD(DISPC_CONFIG, enable ? 1 : 0, 14, 14);
enable_clocks(0);
}
static void _dispc_set_fir(enum omap_plane plane, int hinc, int vinc)
{
u32 val;
const struct dispc_reg fir_reg[] = { DISPC_VID_FIR(0),
DISPC_VID_FIR(1) };
u8 hinc_start, hinc_end, vinc_start, vinc_end;
BUG_ON(plane == OMAP_DSS_GFX);
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(fir_reg[plane-1], val);
}
static void _dispc_set_vid_accu0(enum omap_plane plane, int haccu, int vaccu)
{
u32 val;
const struct dispc_reg ac0_reg[] = { DISPC_VID_ACCU0(0),
DISPC_VID_ACCU0(1) };
BUG_ON(plane == OMAP_DSS_GFX);
val = FLD_VAL(vaccu, 25, 16) | FLD_VAL(haccu, 9, 0);
dispc_write_reg(ac0_reg[plane-1], val);
}
static void _dispc_set_vid_accu1(enum omap_plane plane, int haccu, int vaccu)
{
u32 val;
const struct dispc_reg ac1_reg[] = { DISPC_VID_ACCU1(0),
DISPC_VID_ACCU1(1) };
BUG_ON(plane == OMAP_DSS_GFX);
val = FLD_VAL(vaccu, 25, 16) | FLD_VAL(haccu, 9, 0);
dispc_write_reg(ac1_reg[plane-1], val);
}
static void _dispc_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)
{
int fir_hinc;
int fir_vinc;
int hscaleup, vscaleup;
int accu0 = 0;
int accu1 = 0;
u32 l;
BUG_ON(plane == OMAP_DSS_GFX);
hscaleup = orig_width <= out_width;
vscaleup = orig_height <= out_height;
_dispc_set_scale_coef(plane, hscaleup, vscaleup, five_taps);
if (!orig_width || orig_width == out_width)
fir_hinc = 0;
else
fir_hinc = 1024 * orig_width / out_width;
if (!orig_height || orig_height == out_height)
fir_vinc = 0;
else
fir_vinc = 1024 * orig_height / out_height;
_dispc_set_fir(plane, fir_hinc, fir_vinc);
l = dispc_read_reg(dispc_reg_att[plane]);
l &= ~((0x0f << 5) | (0x3 << 21));
l |= fir_hinc ? (1 << 5) : 0;
l |= fir_vinc ? (1 << 6) : 0;
l |= hscaleup ? 0 : (1 << 7);
l |= vscaleup ? 0 : (1 << 8);
l |= five_taps ? (1 << 21) : 0;
l |= five_taps ? (1 << 22) : 0;
dispc_write_reg(dispc_reg_att[plane], l);
/*
* field 0 = even field = bottom field
* field 1 = odd field = top field
*/
if (ilace && !fieldmode) {
accu1 = 0;
accu0 = (fir_vinc / 2) & 0x3ff;
if (accu0 >= 1024/2) {
accu1 = 1024/2;
accu0 -= accu1;
}
}
_dispc_set_vid_accu0(plane, 0, accu0);
_dispc_set_vid_accu1(plane, 0, accu1);
}
static void _dispc_set_rotation_attrs(enum omap_plane plane, u8 rotation,
bool mirroring, enum omap_color_mode color_mode)
{
if (color_mode == OMAP_DSS_COLOR_YUV2 ||
color_mode == OMAP_DSS_COLOR_UYVY) {
int vidrot = 0;
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;
}
}
REG_FLD_MOD(dispc_reg_att[plane], vidrot, 13, 12);
if (rotation == OMAP_DSS_ROT_90 || rotation == OMAP_DSS_ROT_270)
REG_FLD_MOD(dispc_reg_att[plane], 0x1, 18, 18);
else
REG_FLD_MOD(dispc_reg_att[plane], 0x0, 18, 18);
} else {
REG_FLD_MOD(dispc_reg_att[plane], 0, 13, 12);
REG_FLD_MOD(dispc_reg_att[plane], 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:
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:
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;
/* FIXME venc pclk? */
u64 tmp, pclk = dispc_pclk_rate(channel);
if (height > out_height) {
/* FIXME get real display PPL */
unsigned int ppl = 800;
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;
/* FIXME venc pclk? */
return dispc_pclk_rate(channel) * vf * hf;
}
void dispc_set_channel_out(enum omap_plane plane, enum omap_channel channel_out)
{
enable_clocks(1);
_dispc_set_channel_out(plane, channel_out);
enable_clocks(0);
}
static int _dispc_setup_plane(enum omap_plane plane,
u32 paddr, u16 screen_width,
u16 pos_x, u16 pos_y,
u16 width, u16 height,
u16 out_width, u16 out_height,
enum omap_color_mode color_mode,
bool ilace,
enum omap_dss_rotation_type rotation_type,
u8 rotation, int mirror,
u8 global_alpha, u8 pre_mult_alpha,
enum omap_channel channel)
{
const int maxdownscale = cpu_is_omap34xx() ? 4 : 2;
bool five_taps = 0;
bool fieldmode = 0;
int cconv = 0;
unsigned offset0, offset1;
s32 row_inc;
s32 pix_inc;
u16 frame_height = height;
unsigned int field_offset = 0;
if (paddr == 0)
return -EINVAL;
if (ilace && height == out_height)
fieldmode = 1;
if (ilace) {
if (fieldmode)
height /= 2;
pos_y /= 2;
out_height /= 2;
DSSDBG("adjusting for ilace: height %d, pos_y %d, "
"out_height %d\n",
height, pos_y, out_height);
}
if (!dss_feat_color_mode_supported(plane, color_mode))
return -EINVAL;
if (plane == OMAP_DSS_GFX) {
if (width != out_width || height != out_height)
return -EINVAL;
} else {
/* video plane */
unsigned long fclk = 0;
if (out_width < width / maxdownscale ||
out_width > width * 8)
return -EINVAL;
if (out_height < height / maxdownscale ||
out_height > height * 8)
return -EINVAL;
if (color_mode == OMAP_DSS_COLOR_YUV2 ||
color_mode == OMAP_DSS_COLOR_UYVY)
cconv = 1;
/* 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;
}
}
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 (!height || height == out_height)
field_offset = 0;
else
field_offset = height / out_height / 2;
}
/* Fields are independent but interleaved in memory. */
if (fieldmode)
field_offset = 1;
if (rotation_type == OMAP_DSS_ROT_DMA)
calc_dma_rotation_offset(rotation, mirror,
screen_width, width, frame_height, color_mode,
fieldmode, field_offset,
&offset0, &offset1, &row_inc, &pix_inc);
else
calc_vrfb_rotation_offset(rotation, mirror,
screen_width, width, frame_height, 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_set_color_mode(plane, color_mode);
_dispc_set_plane_ba0(plane, paddr + offset0);
_dispc_set_plane_ba1(plane, paddr + offset1);
_dispc_set_row_inc(plane, row_inc);
_dispc_set_pix_inc(plane, pix_inc);
DSSDBG("%d,%d %dx%d -> %dx%d\n", pos_x, pos_y, width, height,
out_width, out_height);
_dispc_set_plane_pos(plane, pos_x, pos_y);
_dispc_set_pic_size(plane, width, height);
if (plane != OMAP_DSS_GFX) {
_dispc_set_scaling(plane, width, height,
out_width, out_height,
ilace, five_taps, fieldmode);
_dispc_set_vid_size(plane, out_width, out_height);
_dispc_set_vid_color_conv(plane, cconv);
}
_dispc_set_rotation_attrs(plane, rotation, mirror, color_mode);
_dispc_set_pre_mult_alpha(plane, pre_mult_alpha);
_dispc_setup_global_alpha(plane, global_alpha);
return 0;
}
static void _dispc_enable_plane(enum omap_plane plane, bool enable)
{
REG_FLD_MOD(dispc_reg_att[plane], enable ? 1 : 0, 0, 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_enable_lcd_out(enum omap_channel channel, bool enable)
{
struct completion frame_done_completion;
bool is_on;
int r;
u32 irq;
enable_clocks(1);
/* 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");
}
enable_clocks(0);
}
static void _enable_digit_out(bool enable)
{
REG_FLD_MOD(DISPC_CONTROL, enable ? 1 : 0, 1, 1);
}
static void dispc_enable_digit_out(bool enable)
{
struct completion frame_done_completion;
int r;
enable_clocks(1);
if (REG_GET(DISPC_CONTROL, 1, 1) == enable) {
enable_clocks(0);
return;
}
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);
r = omap_dispc_register_isr(dispc_disable_isr, &frame_done_completion,
DISPC_IRQ_EVSYNC_EVEN | DISPC_IRQ_EVSYNC_ODD);
if (r)
DSSERR("failed to register EVSYNC isr\n");
_enable_digit_out(enable);
/* 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 */
if (!wait_for_completion_timeout(&frame_done_completion,
msecs_to_jiffies(100)))
DSSERR("timeout waiting for EVSYNC\n");
if (!wait_for_completion_timeout(&frame_done_completion,
msecs_to_jiffies(100)))
DSSERR("timeout waiting for EVSYNC\n");
r = omap_dispc_unregister_isr(dispc_disable_isr,
&frame_done_completion,
DISPC_IRQ_EVSYNC_EVEN | DISPC_IRQ_EVSYNC_ODD);
if (r)
DSSERR("failed to unregister EVSYNC isr\n");
if (enable) {
unsigned long flags;
spin_lock_irqsave(&dispc.irq_lock, flags);
dispc.irq_error_mask = DISPC_IRQ_MASK_ERROR;
if (dss_has_feature(FEAT_MGR_LCD2))
dispc.irq_error_mask |= DISPC_IRQ_SYNC_LOST2;
dispc_write_reg(DISPC_IRQSTATUS, DISPC_IRQ_SYNC_LOST_DIGIT);
_omap_dispc_set_irqs();
spin_unlock_irqrestore(&dispc.irq_lock, flags);
}
enable_clocks(0);
}
bool dispc_is_channel_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_enable_channel(enum omap_channel channel, bool enable)
{
if (channel == OMAP_DSS_CHANNEL_LCD ||
channel == OMAP_DSS_CHANNEL_LCD2)
dispc_enable_lcd_out(channel, enable);
else if (channel == OMAP_DSS_CHANNEL_DIGIT)
dispc_enable_digit_out(enable);
else
BUG();
}
void dispc_lcd_enable_signal_polarity(bool act_high)
{
if (!dss_has_feature(FEAT_LCDENABLEPOL))
return;
enable_clocks(1);
REG_FLD_MOD(DISPC_CONTROL, act_high ? 1 : 0, 29, 29);
enable_clocks(0);
}
void dispc_lcd_enable_signal(bool enable)
{
if (!dss_has_feature(FEAT_LCDENABLESIGNAL))
return;
enable_clocks(1);
REG_FLD_MOD(DISPC_CONTROL, enable ? 1 : 0, 28, 28);
enable_clocks(0);
}
void dispc_pck_free_enable(bool enable)
{
if (!dss_has_feature(FEAT_PCKFREEENABLE))
return;
enable_clocks(1);
REG_FLD_MOD(DISPC_CONTROL, enable ? 1 : 0, 27, 27);
enable_clocks(0);
}
void dispc_enable_fifohandcheck(enum omap_channel channel, bool enable)
{
enable_clocks(1);
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);
enable_clocks(0);
}
void dispc_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;
}
enable_clocks(1);
if (channel == OMAP_DSS_CHANNEL_LCD2)
REG_FLD_MOD(DISPC_CONTROL2, mode, 3, 3);
else
REG_FLD_MOD(DISPC_CONTROL, mode, 3, 3);
enable_clocks(0);
}
void dispc_set_loadmode(enum omap_dss_load_mode mode)
{
enable_clocks(1);
REG_FLD_MOD(DISPC_CONFIG, mode, 2, 1);
enable_clocks(0);
}
void dispc_set_default_color(enum omap_channel channel, u32 color)
{
enable_clocks(1);
dispc_write_reg(DISPC_DEFAULT_COLOR(channel), color);
enable_clocks(0);
}
u32 dispc_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);
enable_clocks(1);
l = dispc_read_reg(DISPC_DEFAULT_COLOR(channel));
enable_clocks(0);
return l;
}
void dispc_set_trans_key(enum omap_channel ch,
enum omap_dss_trans_key_type type,
u32 trans_key)
{
enable_clocks(1);
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);
enable_clocks(0);
}
void dispc_get_trans_key(enum omap_channel ch,
enum omap_dss_trans_key_type *type,
u32 *trans_key)
{
enable_clocks(1);
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));
enable_clocks(0);
}
void dispc_enable_trans_key(enum omap_channel ch, bool enable)
{
enable_clocks(1);
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);
enable_clocks(0);
}
void dispc_enable_alpha_blending(enum omap_channel ch, bool enable)
{
if (!dss_has_feature(FEAT_GLOBAL_ALPHA))
return;
enable_clocks(1);
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);
else /* OMAP_DSS_CHANNEL_LCD2 */
REG_FLD_MOD(DISPC_CONFIG2, enable, 18, 18);
enable_clocks(0);
}
bool dispc_alpha_blending_enabled(enum omap_channel ch)
{
bool enabled;
if (!dss_has_feature(FEAT_GLOBAL_ALPHA))
return false;
enable_clocks(1);
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 if (ch == OMAP_DSS_CHANNEL_LCD2)
enabled = REG_GET(DISPC_CONFIG2, 18, 18);
else
BUG();
enable_clocks(0);
return enabled;
}
bool dispc_trans_key_enabled(enum omap_channel ch)
{
bool enabled;
enable_clocks(1);
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();
enable_clocks(0);
return enabled;
}
void dispc_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;
}
enable_clocks(1);
if (channel == OMAP_DSS_CHANNEL_LCD2)
REG_FLD_MOD(DISPC_CONTROL2, code, 9, 8);
else
REG_FLD_MOD(DISPC_CONTROL, code, 9, 8);
enable_clocks(0);
}
void dispc_set_parallel_interface_mode(enum omap_channel channel,
enum omap_parallel_interface_mode mode)
{
u32 l;
int stallmode;
int gpout0 = 1;
int gpout1;
switch (mode) {
case OMAP_DSS_PARALLELMODE_BYPASS:
stallmode = 0;
gpout1 = 1;
break;
case OMAP_DSS_PARALLELMODE_RFBI:
stallmode = 1;
gpout1 = 0;
break;
case OMAP_DSS_PARALLELMODE_DSI:
stallmode = 1;
gpout1 = 1;
break;
default:
BUG();
return;
}
enable_clocks(1);
if (channel == OMAP_DSS_CHANNEL_LCD2) {
l = dispc_read_reg(DISPC_CONTROL2);
l = FLD_MOD(l, stallmode, 11, 11);
dispc_write_reg(DISPC_CONTROL2, l);
} else {
l = dispc_read_reg(DISPC_CONTROL);
l = FLD_MOD(l, stallmode, 11, 11);
l = FLD_MOD(l, gpout0, 15, 15);
l = FLD_MOD(l, gpout1, 16, 16);
dispc_write_reg(DISPC_CONTROL, l);
}
enable_clocks(0);
}
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_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);
}
enable_clocks(1);
dispc_write_reg(DISPC_TIMING_H(channel), timing_h);
dispc_write_reg(DISPC_TIMING_V(channel), timing_v);
enable_clocks(0);
}
/* change name to mode? */
void dispc_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_set_lcd_timings(channel, timings->hsw, timings->hfp,
timings->hbp, timings->vsw, timings->vfp,
timings->vbp);
dispc_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_set_lcd_divisor(enum omap_channel channel, u16 lck_div,
u16 pck_div)
{
BUG_ON(lck_div < 1);
BUG_ON(pck_div < 2);
enable_clocks(1);
dispc_write_reg(DISPC_DIVISOR(channel),
FLD_VAL(lck_div, 23, 16) | FLD_VAL(pck_div, 7, 0));
enable_clocks(0);
}
static void dispc_get_lcd_divisor(enum omap_channel channel, int *lck_div,
int *pck_div)
{
u32 l;
l = dispc_read_reg(DISPC_DIVISOR(channel));
*lck_div = FLD_GET(l, 23, 16);
*pck_div = FLD_GET(l, 7, 0);
}
unsigned long dispc_fclk_rate(void)
{
unsigned long r = 0;
if (dss_get_dispc_clk_source() == DSS_SRC_DSS1_ALWON_FCLK)
r = dss_clk_get_rate(DSS_CLK_FCK);
else
#ifdef CONFIG_OMAP2_DSS_DSI
r = dsi_get_dsi1_pll_rate();
#else
BUG();
#endif
return r;
}
unsigned long dispc_lclk_rate(enum omap_channel channel)
{
int lcd;
unsigned long r;
u32 l;
l = dispc_read_reg(DISPC_DIVISOR(channel));
lcd = FLD_GET(l, 23, 16);
r = dispc_fclk_rate();
return r / lcd;
}
unsigned long dispc_pclk_rate(enum omap_channel channel)
{
int lcd, pcd;
unsigned long r;
u32 l;
l = dispc_read_reg(DISPC_DIVISOR(channel));
lcd = FLD_GET(l, 23, 16);
pcd = FLD_GET(l, 7, 0);
r = dispc_fclk_rate();
return r / lcd / pcd;
}
void dispc_dump_clocks(struct seq_file *s)
{
int lcd, pcd;
enable_clocks(1);
seq_printf(s, "- DISPC -\n");
seq_printf(s, "dispc fclk source = %s\n",
dss_get_dispc_clk_source() == DSS_SRC_DSS1_ALWON_FCLK ?
"dss1_alwon_fclk" : "dsi1_pll_fclk");
seq_printf(s, "fck\t\t%-16lu\n", dispc_fclk_rate());
seq_printf(s, "- LCD1 -\n");
dispc_get_lcd_divisor(OMAP_DSS_CHANNEL_LCD, &lcd, &pcd);
seq_printf(s, "lck\t\t%-16lulck div\t%u\n",
dispc_lclk_rate(OMAP_DSS_CHANNEL_LCD), lcd);
seq_printf(s, "pck\t\t%-16lupck div\t%u\n",
dispc_pclk_rate(OMAP_DSS_CHANNEL_LCD), pcd);
if (dss_has_feature(FEAT_MGR_LCD2)) {
seq_printf(s, "- LCD2 -\n");
dispc_get_lcd_divisor(OMAP_DSS_CHANNEL_LCD2, &lcd, &pcd);
seq_printf(s, "lck\t\t%-16lulck div\t%u\n",
dispc_lclk_rate(OMAP_DSS_CHANNEL_LCD2), lcd);
seq_printf(s, "pck\t\t%-16lupck div\t%u\n",
dispc_pclk_rate(OMAP_DSS_CHANNEL_LCD2), pcd);
}
enable_clocks(0);
}
#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);
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)
{
#define DUMPREG(r) seq_printf(s, "%-35s %08x\n", #r, dispc_read_reg(r))
dss_clk_enable(DSS_CLK_ICK | DSS_CLK_FCK);
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_DEFAULT_COLOR(0));
DUMPREG(DISPC_DEFAULT_COLOR(1));
DUMPREG(DISPC_TRANS_COLOR(0));
DUMPREG(DISPC_TRANS_COLOR(1));
DUMPREG(DISPC_LINE_STATUS);
DUMPREG(DISPC_LINE_NUMBER);
DUMPREG(DISPC_TIMING_H(0));
DUMPREG(DISPC_TIMING_V(0));
DUMPREG(DISPC_POL_FREQ(0));
DUMPREG(DISPC_DIVISOR(0));
DUMPREG(DISPC_GLOBAL_ALPHA);
DUMPREG(DISPC_SIZE_DIG);
DUMPREG(DISPC_SIZE_LCD(0));
if (dss_has_feature(FEAT_MGR_LCD2)) {
DUMPREG(DISPC_CONTROL2);
DUMPREG(DISPC_CONFIG2);
DUMPREG(DISPC_DEFAULT_COLOR(2));
DUMPREG(DISPC_TRANS_COLOR(2));
DUMPREG(DISPC_TIMING_H(2));
DUMPREG(DISPC_TIMING_V(2));
DUMPREG(DISPC_POL_FREQ(2));
DUMPREG(DISPC_DIVISOR(2));
DUMPREG(DISPC_SIZE_LCD(2));
}
DUMPREG(DISPC_GFX_BA0);
DUMPREG(DISPC_GFX_BA1);
DUMPREG(DISPC_GFX_POSITION);
DUMPREG(DISPC_GFX_SIZE);
DUMPREG(DISPC_GFX_ATTRIBUTES);
DUMPREG(DISPC_GFX_FIFO_THRESHOLD);
DUMPREG(DISPC_GFX_FIFO_SIZE_STATUS);
DUMPREG(DISPC_GFX_ROW_INC);
DUMPREG(DISPC_GFX_PIXEL_INC);
DUMPREG(DISPC_GFX_WINDOW_SKIP);
DUMPREG(DISPC_GFX_TABLE_BA);
DUMPREG(DISPC_DATA_CYCLE1(0));
DUMPREG(DISPC_DATA_CYCLE2(0));
DUMPREG(DISPC_DATA_CYCLE3(0));
DUMPREG(DISPC_CPR_COEF_R(0));
DUMPREG(DISPC_CPR_COEF_G(0));
DUMPREG(DISPC_CPR_COEF_B(0));
if (dss_has_feature(FEAT_MGR_LCD2)) {
DUMPREG(DISPC_DATA_CYCLE1(2));
DUMPREG(DISPC_DATA_CYCLE2(2));
DUMPREG(DISPC_DATA_CYCLE3(2));
DUMPREG(DISPC_CPR_COEF_R(2));
DUMPREG(DISPC_CPR_COEF_G(2));
DUMPREG(DISPC_CPR_COEF_B(2));
}
DUMPREG(DISPC_GFX_PRELOAD);
DUMPREG(DISPC_VID_BA0(0));
DUMPREG(DISPC_VID_BA1(0));
DUMPREG(DISPC_VID_POSITION(0));
DUMPREG(DISPC_VID_SIZE(0));
DUMPREG(DISPC_VID_ATTRIBUTES(0));
DUMPREG(DISPC_VID_FIFO_THRESHOLD(0));
DUMPREG(DISPC_VID_FIFO_SIZE_STATUS(0));
DUMPREG(DISPC_VID_ROW_INC(0));
DUMPREG(DISPC_VID_PIXEL_INC(0));
DUMPREG(DISPC_VID_FIR(0));
DUMPREG(DISPC_VID_PICTURE_SIZE(0));
DUMPREG(DISPC_VID_ACCU0(0));
DUMPREG(DISPC_VID_ACCU1(0));
DUMPREG(DISPC_VID_BA0(1));
DUMPREG(DISPC_VID_BA1(1));
DUMPREG(DISPC_VID_POSITION(1));
DUMPREG(DISPC_VID_SIZE(1));
DUMPREG(DISPC_VID_ATTRIBUTES(1));
DUMPREG(DISPC_VID_FIFO_THRESHOLD(1));
DUMPREG(DISPC_VID_FIFO_SIZE_STATUS(1));
DUMPREG(DISPC_VID_ROW_INC(1));
DUMPREG(DISPC_VID_PIXEL_INC(1));
DUMPREG(DISPC_VID_FIR(1));
DUMPREG(DISPC_VID_PICTURE_SIZE(1));
DUMPREG(DISPC_VID_ACCU0(1));
DUMPREG(DISPC_VID_ACCU1(1));
DUMPREG(DISPC_VID_FIR_COEF_H(0, 0));
DUMPREG(DISPC_VID_FIR_COEF_H(0, 1));
DUMPREG(DISPC_VID_FIR_COEF_H(0, 2));
DUMPREG(DISPC_VID_FIR_COEF_H(0, 3));
DUMPREG(DISPC_VID_FIR_COEF_H(0, 4));
DUMPREG(DISPC_VID_FIR_COEF_H(0, 5));
DUMPREG(DISPC_VID_FIR_COEF_H(0, 6));
DUMPREG(DISPC_VID_FIR_COEF_H(0, 7));
DUMPREG(DISPC_VID_FIR_COEF_HV(0, 0));
DUMPREG(DISPC_VID_FIR_COEF_HV(0, 1));
DUMPREG(DISPC_VID_FIR_COEF_HV(0, 2));
DUMPREG(DISPC_VID_FIR_COEF_HV(0, 3));
DUMPREG(DISPC_VID_FIR_COEF_HV(0, 4));
DUMPREG(DISPC_VID_FIR_COEF_HV(0, 5));
DUMPREG(DISPC_VID_FIR_COEF_HV(0, 6));
DUMPREG(DISPC_VID_FIR_COEF_HV(0, 7));
DUMPREG(DISPC_VID_CONV_COEF(0, 0));
DUMPREG(DISPC_VID_CONV_COEF(0, 1));
DUMPREG(DISPC_VID_CONV_COEF(0, 2));
DUMPREG(DISPC_VID_CONV_COEF(0, 3));
DUMPREG(DISPC_VID_CONV_COEF(0, 4));
DUMPREG(DISPC_VID_FIR_COEF_V(0, 0));
DUMPREG(DISPC_VID_FIR_COEF_V(0, 1));
DUMPREG(DISPC_VID_FIR_COEF_V(0, 2));
DUMPREG(DISPC_VID_FIR_COEF_V(0, 3));
DUMPREG(DISPC_VID_FIR_COEF_V(0, 4));
DUMPREG(DISPC_VID_FIR_COEF_V(0, 5));
DUMPREG(DISPC_VID_FIR_COEF_V(0, 6));
DUMPREG(DISPC_VID_FIR_COEF_V(0, 7));
DUMPREG(DISPC_VID_FIR_COEF_H(1, 0));
DUMPREG(DISPC_VID_FIR_COEF_H(1, 1));
DUMPREG(DISPC_VID_FIR_COEF_H(1, 2));
DUMPREG(DISPC_VID_FIR_COEF_H(1, 3));
DUMPREG(DISPC_VID_FIR_COEF_H(1, 4));
DUMPREG(DISPC_VID_FIR_COEF_H(1, 5));
DUMPREG(DISPC_VID_FIR_COEF_H(1, 6));
DUMPREG(DISPC_VID_FIR_COEF_H(1, 7));
DUMPREG(DISPC_VID_FIR_COEF_HV(1, 0));
DUMPREG(DISPC_VID_FIR_COEF_HV(1, 1));
DUMPREG(DISPC_VID_FIR_COEF_HV(1, 2));
DUMPREG(DISPC_VID_FIR_COEF_HV(1, 3));
DUMPREG(DISPC_VID_FIR_COEF_HV(1, 4));
DUMPREG(DISPC_VID_FIR_COEF_HV(1, 5));
DUMPREG(DISPC_VID_FIR_COEF_HV(1, 6));
DUMPREG(DISPC_VID_FIR_COEF_HV(1, 7));
DUMPREG(DISPC_VID_CONV_COEF(1, 0));
DUMPREG(DISPC_VID_CONV_COEF(1, 1));
DUMPREG(DISPC_VID_CONV_COEF(1, 2));
DUMPREG(DISPC_VID_CONV_COEF(1, 3));
DUMPREG(DISPC_VID_CONV_COEF(1, 4));
DUMPREG(DISPC_VID_FIR_COEF_V(1, 0));
DUMPREG(DISPC_VID_FIR_COEF_V(1, 1));
DUMPREG(DISPC_VID_FIR_COEF_V(1, 2));
DUMPREG(DISPC_VID_FIR_COEF_V(1, 3));
DUMPREG(DISPC_VID_FIR_COEF_V(1, 4));
DUMPREG(DISPC_VID_FIR_COEF_V(1, 5));
DUMPREG(DISPC_VID_FIR_COEF_V(1, 6));
DUMPREG(DISPC_VID_FIR_COEF_V(1, 7));
DUMPREG(DISPC_VID_PRELOAD(0));
DUMPREG(DISPC_VID_PRELOAD(1));
dss_clk_disable(DSS_CLK_ICK | DSS_CLK_FCK);
#undef DUMPREG
}
static void _dispc_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);
enable_clocks(1);
dispc_write_reg(DISPC_POL_FREQ(channel), l);
enable_clocks(0);
}
void dispc_set_pol_freq(enum omap_channel channel,
enum omap_panel_config config, u8 acbi, u8 acb)
{
_dispc_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 = is_tft ? 2 : 3;
unsigned long best_pck;
u16 best_ld, cur_ld;
u16 best_pd, cur_pd;
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 <= 255; ++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 < 2 || 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_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_set_lcd_divisor(channel, cinfo->lck_div, cinfo->pck_div);
return 0;
}
int dispc_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_DIVISOR(channel), 23, 16);
cinfo->pck_div = REG_GET(DISPC_DIVISOR(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;
}
enable_clocks(1);
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);
enable_clocks(0);
}
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;
}
_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);
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;
spin_lock_irqsave(&dispc.irq_lock, flags);
errors = dispc.error_irqs;
dispc.error_irqs = 0;
spin_unlock_irqrestore(&dispc.irq_lock, flags);
if (errors & DISPC_IRQ_GFX_FIFO_UNDERFLOW) {
DSSERR("GFX_FIFO_UNDERFLOW, disabling GFX\n");
for (i = 0; i < omap_dss_get_num_overlays(); ++i) {
struct omap_overlay *ovl;
ovl = omap_dss_get_overlay(i);
if (!(ovl->caps & OMAP_DSS_OVL_CAP_DISPC))
continue;
if (ovl->id == 0) {
dispc_enable_plane(ovl->id, 0);
dispc_go(ovl->manager->id);
mdelay(50);
break;
}
}
}
if (errors & DISPC_IRQ_VID1_FIFO_UNDERFLOW) {
DSSERR("VID1_FIFO_UNDERFLOW, disabling VID1\n");
for (i = 0; i < omap_dss_get_num_overlays(); ++i) {
struct omap_overlay *ovl;
ovl = omap_dss_get_overlay(i);
if (!(ovl->caps & OMAP_DSS_OVL_CAP_DISPC))
continue;
if (ovl->id == 1) {
dispc_enable_plane(ovl->id, 0);
dispc_go(ovl->manager->id);
mdelay(50);
break;
}
}
}
if (errors & DISPC_IRQ_VID2_FIFO_UNDERFLOW) {
DSSERR("VID2_FIFO_UNDERFLOW, disabling VID2\n");
for (i = 0; i < omap_dss_get_num_overlays(); ++i) {
struct omap_overlay *ovl;
ovl = omap_dss_get_overlay(i);
if (!(ovl->caps & OMAP_DSS_OVL_CAP_DISPC))
continue;
if (ovl->id == 2) {
dispc_enable_plane(ovl->id, 0);
dispc_go(ovl->manager->id);
mdelay(50);
break;
}
}
}
if (errors & DISPC_IRQ_SYNC_LOST) {
struct omap_overlay_manager *manager = NULL;
bool enable = false;
DSSERR("SYNC_LOST, disabling LCD\n");
for (i = 0; i < omap_dss_get_num_overlay_managers(); ++i) {
struct omap_overlay_manager *mgr;
mgr = omap_dss_get_overlay_manager(i);
if (mgr->id == OMAP_DSS_CHANNEL_LCD) {
manager = mgr;
enable = mgr->device->state ==
OMAP_DSS_DISPLAY_ACTIVE;
mgr->device->driver->disable(mgr->device);
break;
}
}
if (manager) {
struct omap_dss_device *dssdev = manager->device;
for (i = 0; i < omap_dss_get_num_overlays(); ++i) {
struct omap_overlay *ovl;
ovl = omap_dss_get_overlay(i);
if (!(ovl->caps & OMAP_DSS_OVL_CAP_DISPC))
continue;
if (ovl->id != 0 && ovl->manager == manager)
dispc_enable_plane(ovl->id, 0);
}
dispc_go(manager->id);
mdelay(50);
if (enable)
dssdev->driver->enable(dssdev);
}
}
if (errors & DISPC_IRQ_SYNC_LOST_DIGIT) {
struct omap_overlay_manager *manager = NULL;
bool enable = false;
DSSERR("SYNC_LOST_DIGIT, disabling TV\n");
for (i = 0; i < omap_dss_get_num_overlay_managers(); ++i) {
struct omap_overlay_manager *mgr;
mgr = omap_dss_get_overlay_manager(i);
if (mgr->id == OMAP_DSS_CHANNEL_DIGIT) {
manager = mgr;
enable = mgr->device->state ==
OMAP_DSS_DISPLAY_ACTIVE;
mgr->device->driver->disable(mgr->device);
break;
}
}
if (manager) {
struct omap_dss_device *dssdev = manager->device;
for (i = 0; i < omap_dss_get_num_overlays(); ++i) {
struct omap_overlay *ovl;
ovl = omap_dss_get_overlay(i);
if (!(ovl->caps & OMAP_DSS_OVL_CAP_DISPC))
continue;
if (ovl->id != 0 && ovl->manager == manager)
dispc_enable_plane(ovl->id, 0);
}
dispc_go(manager->id);
mdelay(50);
if (enable)
dssdev->driver->enable(dssdev);
}
}
if (errors & DISPC_IRQ_SYNC_LOST2) {
struct omap_overlay_manager *manager = NULL;
bool enable = false;
DSSERR("SYNC_LOST for LCD2, disabling LCD2\n");
for (i = 0; i < omap_dss_get_num_overlay_managers(); ++i) {
struct omap_overlay_manager *mgr;
mgr = omap_dss_get_overlay_manager(i);
if (mgr->id == OMAP_DSS_CHANNEL_LCD2) {
manager = mgr;
enable = mgr->device->state ==
OMAP_DSS_DISPLAY_ACTIVE;
mgr->device->driver->disable(mgr->device);
break;
}
}
if (manager) {
struct omap_dss_device *dssdev = manager->device;
for (i = 0; i < omap_dss_get_num_overlays(); ++i) {
struct omap_overlay *ovl;
ovl = omap_dss_get_overlay(i);
if (!(ovl->caps & OMAP_DSS_OVL_CAP_DISPC))
continue;
if (ovl->id != 0 && ovl->manager == manager)
dispc_enable_plane(ovl->id, 0);
}
dispc_go(manager->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);
if (mgr->caps & OMAP_DSS_OVL_CAP_DISPC)
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);
}
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;
/* 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;
l = dispc_read_reg(DISPC_SYSCONFIG);
l = FLD_MOD(l, 2, 13, 12); /* MIDLEMODE: smart standby */
l = FLD_MOD(l, 2, 4, 3); /* SIDLEMODE: smart idle */
l = FLD_MOD(l, 1, 2, 2); /* ENWAKEUP */
l = FLD_MOD(l, 1, 0, 0); /* AUTOIDLE */
dispc_write_reg(DISPC_SYSCONFIG, 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();
}
int dispc_enable_plane(enum omap_plane plane, bool enable)
{
DSSDBG("dispc_enable_plane %d, %d\n", plane, enable);
enable_clocks(1);
_dispc_enable_plane(plane, enable);
enable_clocks(0);
return 0;
}
int dispc_setup_plane(enum omap_plane plane,
u32 paddr, u16 screen_width,
u16 pos_x, u16 pos_y,
u16 width, u16 height,
u16 out_width, u16 out_height,
enum omap_color_mode color_mode,
bool ilace,
enum omap_dss_rotation_type rotation_type,
u8 rotation, bool mirror, u8 global_alpha,
u8 pre_mult_alpha, enum omap_channel channel)
{
int r = 0;
DSSDBG("dispc_setup_plane %d, pa %x, sw %d, %d,%d, %dx%d -> "
"%dx%d, ilace %d, cmode %x, rot %d, mir %d chan %d\n",
plane, paddr, screen_width, pos_x, pos_y,
width, height,
out_width, out_height,
ilace, color_mode,
rotation, mirror, channel);
enable_clocks(1);
r = _dispc_setup_plane(plane,
paddr, screen_width,
pos_x, pos_y,
width, height,
out_width, out_height,
color_mode, ilace,
rotation_type,
rotation, mirror,
global_alpha,
pre_mult_alpha, channel);
enable_clocks(0);
return r;
}
/* DISPC HW IP initialisation */
static int omap_dispchw_probe(struct platform_device *pdev)
{
u32 rev;
int r = 0;
struct resource *dispc_mem;
dispc.pdev = pdev;
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 fail0;
}
dispc.base = ioremap(dispc_mem->start, resource_size(dispc_mem));
if (!dispc.base) {
DSSERR("can't ioremap DISPC\n");
r = -ENOMEM;
goto fail0;
}
dispc.irq = platform_get_irq(dispc.pdev, 0);
if (dispc.irq < 0) {
DSSERR("platform_get_irq failed\n");
r = -ENODEV;
goto fail1;
}
r = request_irq(dispc.irq, omap_dispc_irq_handler, IRQF_SHARED,
"OMAP DISPC", dispc.pdev);
if (r < 0) {
DSSERR("request_irq failed\n");
goto fail1;
}
enable_clocks(1);
_omap_dispc_initial_config();
_omap_dispc_initialize_irq();
dispc_save_context();
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));
enable_clocks(0);
return 0;
fail1:
iounmap(dispc.base);
fail0:
return r;
}
static int omap_dispchw_remove(struct platform_device *pdev)
{
free_irq(dispc.irq, dispc.pdev);
iounmap(dispc.base);
return 0;
}
static struct platform_driver omap_dispchw_driver = {
.probe = omap_dispchw_probe,
.remove = omap_dispchw_remove,
.driver = {
.name = "omapdss_dispc",
.owner = THIS_MODULE,
},
};
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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