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Message-Id: <1251462337-12531-10-git-send-email-tomi.valkeinen@nokia.com>
Date: Fri, 28 Aug 2009 15:25:28 +0300
From: Tomi Valkeinen <tomi.valkeinen@...ia.com>
To: linux-kernel@...r.kernel.org
Cc: Tomi Valkeinen <tomi.valkeinen@...ia.com>
Subject: [PATCH 09/18] OMAP: DSS2: DISPC
This file implements DISPC (display controller) block of the OMAP DSS.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@...ia.com>
---
drivers/video/omap2/dss/dispc.c | 3182 +++++++++++++++++++++++++++++++++++++++
1 files changed, 3182 insertions(+), 0 deletions(-)
create mode 100644 drivers/video/omap2/dss/dispc.c
diff --git a/drivers/video/omap2/dss/dispc.c b/drivers/video/omap2/dss/dispc.c
new file mode 100644
index 0000000..d648475
--- /dev/null
+++ b/drivers/video/omap2/dss/dispc.c
@@ -0,0 +1,3182 @@
+/*
+ * linux/drivers/video/omap2/dss/dispc.c
+ *
+ * Copyright (C) 2009 Nokia Corporation
+ * Author: Tomi Valkeinen <tomi.valkeinen@...ia.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 <mach/sram.h>
+#include <mach/board.h>
+#include <mach/clock.h>
+
+#include <mach/display.h>
+
+#include "dss.h"
+
+/* DISPC */
+#define DISPC_BASE 0x48050400
+
+#define DISPC_SZ_REGS SZ_1K
+
+struct dispc_reg { u16 idx; };
+
+#define DISPC_REG(idx) ((const struct dispc_reg) { idx })
+
+/* DISPC common */
+#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_CONFIG DISPC_REG(0x0044)
+#define DISPC_CAPABLE DISPC_REG(0x0048)
+#define DISPC_DEFAULT_COLOR0 DISPC_REG(0x004C)
+#define DISPC_DEFAULT_COLOR1 DISPC_REG(0x0050)
+#define DISPC_TRANS_COLOR0 DISPC_REG(0x0054)
+#define DISPC_TRANS_COLOR1 DISPC_REG(0x0058)
+#define DISPC_LINE_STATUS DISPC_REG(0x005C)
+#define DISPC_LINE_NUMBER DISPC_REG(0x0060)
+#define DISPC_TIMING_H DISPC_REG(0x0064)
+#define DISPC_TIMING_V DISPC_REG(0x0068)
+#define DISPC_POL_FREQ DISPC_REG(0x006C)
+#define DISPC_DIVISOR DISPC_REG(0x0070)
+#define DISPC_GLOBAL_ALPHA DISPC_REG(0x0074)
+#define DISPC_SIZE_DIG DISPC_REG(0x0078)
+#define DISPC_SIZE_LCD DISPC_REG(0x007C)
+
+/* 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 DISPC_REG(0x01D4)
+#define DISPC_DATA_CYCLE2 DISPC_REG(0x01D8)
+#define DISPC_DATA_CYCLE3 DISPC_REG(0x01DC)
+
+#define DISPC_CPR_COEF_R DISPC_REG(0x0220)
+#define DISPC_CPR_COEF_G DISPC_REG(0x0224)
+#define DISPC_CPR_COEF_B DISPC_REG(0x0228)
+
+#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;
+};
+
+#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) };
+
+static struct {
+ void __iomem *base;
+
+ struct clk *dpll4_m4_ck;
+
+ unsigned long cache_req_pck;
+ unsigned long cache_prate;
+ struct dispc_clock_info cache_cinfo;
+
+ 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)];
+} 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_COLOR0);
+ SR(DEFAULT_COLOR1);
+ SR(TRANS_COLOR0);
+ SR(TRANS_COLOR1);
+ SR(LINE_NUMBER);
+ SR(TIMING_H);
+ SR(TIMING_V);
+ SR(POL_FREQ);
+ SR(DIVISOR);
+ SR(GLOBAL_ALPHA);
+ SR(SIZE_DIG);
+ SR(SIZE_LCD);
+
+ 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);
+ SR(DATA_CYCLE2);
+ SR(DATA_CYCLE3);
+
+ SR(CPR_COEF_R);
+ SR(CPR_COEF_G);
+ SR(CPR_COEF_B);
+
+ 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_COLOR0);
+ RR(DEFAULT_COLOR1);
+ RR(TRANS_COLOR0);
+ RR(TRANS_COLOR1);
+ RR(LINE_NUMBER);
+ RR(TIMING_H);
+ RR(TIMING_V);
+ RR(POL_FREQ);
+ RR(DIVISOR);
+ RR(GLOBAL_ALPHA);
+ RR(SIZE_DIG);
+ RR(SIZE_LCD);
+
+ 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);
+ RR(DATA_CYCLE2);
+ RR(DATA_CYCLE3);
+
+ RR(CPR_COEF_R);
+ RR(CPR_COEF_G);
+ RR(CPR_COEF_B);
+
+ 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);
+}
+
+#undef SR
+#undef RR
+
+static inline void enable_clocks(bool enable)
+{
+ if (enable)
+ dss_clk_enable(DSS_CLK_ICK | DSS_CLK_FCK1);
+ else
+ dss_clk_disable(DSS_CLK_ICK | DSS_CLK_FCK1);
+}
+
+bool dispc_go_busy(enum omap_channel channel)
+{
+ int bit;
+
+ if (channel == OMAP_DSS_CHANNEL_LCD)
+ bit = 5; /* GOLCD */
+ else
+ bit = 6; /* GODIGIT */
+
+ return REG_GET(DISPC_CONTROL, bit, bit) == 1;
+}
+
+void dispc_go(enum omap_channel channel)
+{
+ int bit;
+
+ enable_clocks(1);
+
+ if (channel == OMAP_DSS_CHANNEL_LCD)
+ bit = 0; /* LCDENABLE */
+ else
+ bit = 1; /* DIGITALENABLE */
+
+ /* if the channel is not enabled, we don't need GO */
+ if (REG_GET(DISPC_CONTROL, bit, bit) == 0)
+ goto end;
+
+ if (channel == OMAP_DSS_CHANNEL_LCD)
+ bit = 5; /* GOLCD */
+ else
+ bit = 6; /* GODIGIT */
+
+ if (REG_GET(DISPC_CONTROL, bit, bit) == 1) {
+ DSSERR("GO bit not down for channel %d\n", channel);
+ goto end;
+ }
+
+ DSSDBG("GO %s\n", channel == OMAP_DSS_CHANNEL_LCD ? "LCD" : "DIGIT");
+
+ 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 u32 coef_hup[8] = {
+ 0x00800000,
+ 0x0D7CF800,
+ 0x1E70F5FF,
+ 0x335FF5FE,
+ 0xF74949F7,
+ 0xF55F33FB,
+ 0xF5701EFE,
+ 0xF87C0DFF,
+ };
+
+ /* Coefficients for horizontal down-sampling */
+ static const u32 coef_hdown[8] = {
+ 0x24382400,
+ 0x28371FFE,
+ 0x2C361BFB,
+ 0x303516F9,
+ 0x11343311,
+ 0x1635300C,
+ 0x1B362C08,
+ 0x1F372804,
+ };
+
+ /* Coefficients for horizontal and vertical up-sampling */
+ static const u32 coef_hvup[2][8] = {
+ {
+ 0x00800000,
+ 0x037B02FF,
+ 0x0C6F05FE,
+ 0x205907FB,
+ 0x00404000,
+ 0x075920FE,
+ 0x056F0CFF,
+ 0x027B0300,
+ },
+ {
+ 0x00800000,
+ 0x0D7CF8FF,
+ 0x1E70F5FE,
+ 0x335FF5FB,
+ 0xF7404000,
+ 0xF55F33FE,
+ 0xF5701EFF,
+ 0xF87C0D00,
+ },
+ };
+
+ /* Coefficients for horizontal and vertical down-sampling */
+ static const u32 coef_hvdown[2][8] = {
+ {
+ 0x24382400,
+ 0x28391F04,
+ 0x2D381B08,
+ 0x3237170C,
+ 0x123737F7,
+ 0x173732F9,
+ 0x1B382DFB,
+ 0x1F3928FE,
+ },
+ {
+ 0x24382400,
+ 0x28371F04,
+ 0x2C361B08,
+ 0x3035160C,
+ 0x113433F7,
+ 0x163530F9,
+ 0x1B362CFB,
+ 0x1F3728FE,
+ },
+ };
+
+ /* Coefficients for vertical up-sampling */
+ static const u32 coef_vup[8] = {
+ 0x00000000,
+ 0x0000FF00,
+ 0x0000FEFF,
+ 0x0000FBFE,
+ 0x000000F7,
+ 0x0000FEFB,
+ 0x0000FFFE,
+ 0x000000FF,
+ };
+
+
+ /* Coefficients for vertical down-sampling */
+ static const u32 coef_vdown[8] = {
+ 0x00000000,
+ 0x000004FE,
+ 0x000008FB,
+ 0x00000CF9,
+ 0x0000F711,
+ 0x0000F90C,
+ 0x0000FB08,
+ 0x0000FE04,
+ };
+
+ const u32 *h_coef;
+ const u32 *hv_coef;
+ const u32 *hv_coef_mod;
+ const u32 *v_coef;
+ int i;
+
+ if (hscaleup)
+ h_coef = coef_hup;
+ else
+ h_coef = coef_hdown;
+
+ if (vscaleup) {
+ hv_coef = coef_hvup[five_taps];
+ v_coef = coef_vup;
+
+ if (hscaleup)
+ hv_coef_mod = NULL;
+ else
+ hv_coef_mod = coef_hvdown[five_taps];
+ } else {
+ hv_coef = coef_hvdown[five_taps];
+ v_coef = coef_vdown;
+
+ if (hscaleup)
+ hv_coef_mod = coef_hvup[five_taps];
+ else
+ hv_coef_mod = NULL;
+ }
+
+ for (i = 0; i < 8; i++) {
+ u32 h, hv;
+
+ h = h_coef[i];
+
+ hv = hv_coef[i];
+
+ if (hv_coef_mod) {
+ hv &= 0xffffff00;
+ hv |= (hv_coef_mod[i] & 0xff);
+ }
+
+ _dispc_write_firh_reg(plane, i, h);
+ _dispc_write_firhv_reg(plane, i, hv);
+ }
+
+ if (!five_taps)
+ return;
+
+ for (i = 0; i < 8; i++) {
+ u32 v;
+ v = v_coef[i];
+ _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_setup_global_alpha(enum omap_plane plane, u8 global_alpha)
+{
+
+ BUG_ON(plane == OMAP_DSS_VIDEO1);
+
+ 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;
+
+ 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]);
+ 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(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, 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;
+
+ enable_clocks(1);
+
+ for (plane = 0; plane < ARRAY_SIZE(dispc.fifo_size); ++plane) {
+ if (cpu_is_omap24xx())
+ size = FLD_GET(dispc_read_reg(fsz_reg[plane]), 8, 0);
+ else if (cpu_is_omap34xx())
+ size = FLD_GET(dispc_read_reg(fsz_reg[plane]), 10, 0);
+ else
+ BUG();
+
+ 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) };
+ 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);
+
+ if (cpu_is_omap24xx())
+ dispc_write_reg(ftrs_reg[plane],
+ FLD_VAL(high, 24, 16) | FLD_VAL(low, 8, 0));
+ else
+ dispc_write_reg(ftrs_reg[plane],
+ FLD_VAL(high, 27, 16) | FLD_VAL(low, 11, 0));
+
+ 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) };
+
+ BUG_ON(plane == OMAP_DSS_GFX);
+
+ if (cpu_is_omap24xx())
+ val = FLD_VAL(vinc, 27, 16) | FLD_VAL(hinc, 11, 0);
+ else
+ val = FLD_VAL(vinc, 28, 16) | FLD_VAL(hinc, 12, 0);
+ 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 0:
+ vidrot = 2;
+ break;
+ case 1:
+ vidrot = 1;
+ break;
+ case 2:
+ vidrot = 0;
+ break;
+ case 3:
+ vidrot = 3;
+ break;
+ }
+ } else {
+ switch (rotation) {
+ case 0:
+ vidrot = 0;
+ break;
+ case 1:
+ vidrot = 1;
+ break;
+ case 2:
+ vidrot = 2;
+ break;
+ case 3:
+ vidrot = 3;
+ break;
+ }
+ }
+
+ REG_FLD_MOD(dispc_reg_att[plane], vidrot, 13, 12);
+
+ if (rotation == 1 || rotation == 3)
+ 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 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;
+
+ switch (color_mode) {
+ case OMAP_DSS_COLOR_RGB16:
+ case OMAP_DSS_COLOR_ARGB16:
+ ps = 2;
+ break;
+
+ case OMAP_DSS_COLOR_RGB24P:
+ ps = 3;
+ break;
+
+ case OMAP_DSS_COLOR_RGB24U:
+ case OMAP_DSS_COLOR_ARGB32:
+ case OMAP_DSS_COLOR_RGBA32:
+ case OMAP_DSS_COLOR_RGBX32:
+ case OMAP_DSS_COLOR_YUV2:
+ case OMAP_DSS_COLOR_UYVY:
+ ps = 4;
+ break;
+
+ default:
+ BUG();
+ return;
+ }
+
+ 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 0:
+ case 2:
+ /*
+ * 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 1:
+ case 3:
+ *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 4:
+ case 6:
+ /* 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 5:
+ case 7:
+ *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;
+
+ switch (color_mode) {
+ case OMAP_DSS_COLOR_RGB16:
+ case OMAP_DSS_COLOR_ARGB16:
+ ps = 2;
+ break;
+
+ case OMAP_DSS_COLOR_RGB24P:
+ ps = 3;
+ break;
+
+ case OMAP_DSS_COLOR_RGB24U:
+ case OMAP_DSS_COLOR_ARGB32:
+ case OMAP_DSS_COLOR_RGBA32:
+ case OMAP_DSS_COLOR_RGBX32:
+ ps = 4;
+ break;
+
+ case OMAP_DSS_COLOR_YUV2:
+ case OMAP_DSS_COLOR_UYVY:
+ ps = 2;
+ break;
+ default:
+ BUG();
+ return;
+ }
+
+ 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 == 0 || rotation == 2) {
+ 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 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 1:
+ *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 2:
+ *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 3:
+ *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 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 1 + 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 2 + 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 3 + 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(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();
+
+ 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 && ppl != out_width) {
+ 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(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() * 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)
+{
+ 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 (plane == OMAP_DSS_GFX) {
+ if (width != out_width || height != out_height)
+ return -EINVAL;
+
+ switch (color_mode) {
+ case OMAP_DSS_COLOR_ARGB16:
+ case OMAP_DSS_COLOR_RGB16:
+ case OMAP_DSS_COLOR_RGB24P:
+ case OMAP_DSS_COLOR_RGB24U:
+ case OMAP_DSS_COLOR_ARGB32:
+ case OMAP_DSS_COLOR_RGBA32:
+ case OMAP_DSS_COLOR_RGBX32:
+ break;
+
+ default:
+ 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;
+
+ switch (color_mode) {
+ case OMAP_DSS_COLOR_RGB16:
+ case OMAP_DSS_COLOR_RGB24P:
+ case OMAP_DSS_COLOR_RGB24U:
+ case OMAP_DSS_COLOR_RGBX32:
+ break;
+
+ case OMAP_DSS_COLOR_ARGB16:
+ case OMAP_DSS_COLOR_ARGB32:
+ case OMAP_DSS_COLOR_RGBA32:
+ if (plane == OMAP_DSS_VIDEO1)
+ return -EINVAL;
+ break;
+
+ case OMAP_DSS_COLOR_YUV2:
+ case OMAP_DSS_COLOR_UYVY:
+ cconv = 1;
+ break;
+
+ default:
+ return -EINVAL;
+ }
+
+ /* Must use 5-tap filter? */
+ five_taps = height > out_height * 2;
+
+ if (!five_taps) {
+ fclk = calc_fclk(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))
+ return -EINVAL;
+
+ if (five_taps)
+ fclk = calc_fclk_five_taps(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 > 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);
+
+ if (plane != OMAP_DSS_VIDEO1)
+ _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(bool enable)
+{
+ REG_FLD_MOD(DISPC_CONTROL, enable ? 1 : 0, 0, 0);
+}
+
+void dispc_enable_lcd_out(bool enable)
+{
+ struct completion frame_done_completion;
+ bool is_on;
+ int r;
+
+ 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 = REG_GET(DISPC_CONTROL, 0, 0);
+
+ if (!enable && is_on) {
+ init_completion(&frame_done_completion);
+
+ r = omap_dispc_register_isr(dispc_disable_isr,
+ &frame_done_completion,
+ DISPC_IRQ_FRAMEDONE);
+
+ if (r)
+ DSSERR("failed to register FRAMEDONE isr\n");
+ }
+
+ _enable_lcd_out(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,
+ DISPC_IRQ_FRAMEDONE);
+
+ 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);
+}
+
+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;
+ dispc_write_reg(DISPC_IRQSTATUS, DISPC_IRQ_SYNC_LOST_DIGIT);
+ _omap_dispc_set_irqs();
+ spin_unlock_irqrestore(&dispc.irq_lock, flags);
+ }
+
+ enable_clocks(0);
+}
+
+void dispc_lcd_enable_signal_polarity(bool act_high)
+{
+ enable_clocks(1);
+ REG_FLD_MOD(DISPC_CONTROL, act_high ? 1 : 0, 29, 29);
+ enable_clocks(0);
+}
+
+void dispc_lcd_enable_signal(bool enable)
+{
+ enable_clocks(1);
+ REG_FLD_MOD(DISPC_CONTROL, enable ? 1 : 0, 28, 28);
+ enable_clocks(0);
+}
+
+void dispc_pck_free_enable(bool enable)
+{
+ enable_clocks(1);
+ REG_FLD_MOD(DISPC_CONTROL, enable ? 1 : 0, 27, 27);
+ enable_clocks(0);
+}
+
+void dispc_enable_fifohandcheck(bool enable)
+{
+ enable_clocks(1);
+ REG_FLD_MOD(DISPC_CONFIG, enable ? 1 : 0, 16, 16);
+ enable_clocks(0);
+}
+
+
+void dispc_set_lcd_display_type(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);
+ 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)
+{
+ const struct dispc_reg def_reg[] = { DISPC_DEFAULT_COLOR0,
+ DISPC_DEFAULT_COLOR1 };
+
+ enable_clocks(1);
+ dispc_write_reg(def_reg[channel], color);
+ enable_clocks(0);
+}
+
+u32 dispc_get_default_color(enum omap_channel channel)
+{
+ const struct dispc_reg def_reg[] = { DISPC_DEFAULT_COLOR0,
+ DISPC_DEFAULT_COLOR1 };
+ u32 l;
+
+ BUG_ON(channel != OMAP_DSS_CHANNEL_DIGIT &&
+ channel != OMAP_DSS_CHANNEL_LCD);
+
+ enable_clocks(1);
+ l = dispc_read_reg(def_reg[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)
+{
+ const struct dispc_reg tr_reg[] = {
+ DISPC_TRANS_COLOR0, DISPC_TRANS_COLOR1 };
+
+ enable_clocks(1);
+ if (ch == OMAP_DSS_CHANNEL_LCD)
+ REG_FLD_MOD(DISPC_CONFIG, type, 11, 11);
+ else /* OMAP_DSS_CHANNEL_DIGIT */
+ REG_FLD_MOD(DISPC_CONFIG, type, 13, 13);
+
+ dispc_write_reg(tr_reg[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)
+{
+ const struct dispc_reg tr_reg[] = {
+ DISPC_TRANS_COLOR0, DISPC_TRANS_COLOR1 };
+
+ 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
+ BUG();
+ }
+
+ if (trans_key)
+ *trans_key = dispc_read_reg(tr_reg[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 /* OMAP_DSS_CHANNEL_DIGIT */
+ REG_FLD_MOD(DISPC_CONFIG, enable, 12, 12);
+ enable_clocks(0);
+}
+void dispc_enable_alpha_blending(enum omap_channel ch, bool enable)
+{
+ enable_clocks(1);
+ if (ch == OMAP_DSS_CHANNEL_LCD)
+ REG_FLD_MOD(DISPC_CONFIG, enable, 18, 18);
+ else /* OMAP_DSS_CHANNEL_DIGIT */
+ REG_FLD_MOD(DISPC_CONFIG, enable, 19, 19);
+ enable_clocks(0);
+}
+bool dispc_alpha_blending_enabled(enum omap_channel ch)
+{
+ bool enabled;
+
+ 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, 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
+ BUG();
+ enable_clocks(0);
+
+ return enabled;
+}
+
+
+void dispc_set_tft_data_lines(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);
+ REG_FLD_MOD(DISPC_CONTROL, code, 9, 8);
+ enable_clocks(0);
+}
+
+void dispc_set_parallel_interface_mode(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);
+
+ 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(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, timing_h);
+ dispc_write_reg(DISPC_TIMING_V, timing_v);
+ enable_clocks(0);
+}
+
+/* change name to mode? */
+void dispc_set_lcd_timings(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(timings->hsw, timings->hfp, timings->hbp,
+ timings->vsw, timings->vfp, timings->vbp);
+
+ dispc_set_lcd_size(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("xres %u yres %u\n", 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);
+}
+
+void dispc_set_lcd_divisor(u16 lck_div, u16 pck_div)
+{
+ BUG_ON(lck_div < 1);
+ BUG_ON(pck_div < 2);
+
+ enable_clocks(1);
+ dispc_write_reg(DISPC_DIVISOR,
+ FLD_VAL(lck_div, 23, 16) | FLD_VAL(pck_div, 7, 0));
+ enable_clocks(0);
+}
+
+static void dispc_get_lcd_divisor(int *lck_div, int *pck_div)
+{
+ u32 l;
+ l = dispc_read_reg(DISPC_DIVISOR);
+ *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() == 0)
+ r = dss_clk_get_rate(DSS_CLK_FCK1);
+ else
+#ifdef CONFIG_OMAP2_DSS_DSI
+ r = dsi_get_dsi1_pll_rate();
+#else
+ BUG();
+#endif
+ return r;
+}
+
+unsigned long dispc_lclk_rate(void)
+{
+ int lcd;
+ unsigned long r;
+ u32 l;
+
+ l = dispc_read_reg(DISPC_DIVISOR);
+
+ lcd = FLD_GET(l, 23, 16);
+
+ r = dispc_fclk_rate();
+
+ return r / lcd;
+}
+
+unsigned long dispc_pclk_rate(void)
+{
+ int lcd, pcd;
+ unsigned long r;
+ u32 l;
+
+ l = dispc_read_reg(DISPC_DIVISOR);
+
+ 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);
+
+ dispc_get_lcd_divisor(&lcd, &pcd);
+
+ seq_printf(s, "- dispc -\n");
+
+ seq_printf(s, "dispc fclk source = %s\n",
+ dss_get_dispc_clk_source() == 0 ?
+ "dss1_alwon_fclk" : "dsi1_pll_fclk");
+
+ seq_printf(s, "pixel clk = %lu / %d / %d = %lu\n",
+ dispc_fclk_rate(),
+ lcd, pcd,
+ dispc_pclk_rate());
+
+ enable_clocks(0);
+}
+
+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_FCK1);
+
+ 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_COLOR0);
+ DUMPREG(DISPC_DEFAULT_COLOR1);
+ DUMPREG(DISPC_TRANS_COLOR0);
+ DUMPREG(DISPC_TRANS_COLOR1);
+ DUMPREG(DISPC_LINE_STATUS);
+ DUMPREG(DISPC_LINE_NUMBER);
+ DUMPREG(DISPC_TIMING_H);
+ DUMPREG(DISPC_TIMING_V);
+ DUMPREG(DISPC_POL_FREQ);
+ DUMPREG(DISPC_DIVISOR);
+ DUMPREG(DISPC_GLOBAL_ALPHA);
+ DUMPREG(DISPC_SIZE_DIG);
+ DUMPREG(DISPC_SIZE_LCD);
+
+ 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);
+ DUMPREG(DISPC_DATA_CYCLE2);
+ DUMPREG(DISPC_DATA_CYCLE3);
+
+ DUMPREG(DISPC_CPR_COEF_R);
+ DUMPREG(DISPC_CPR_COEF_G);
+ DUMPREG(DISPC_CPR_COEF_B);
+
+ 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_FCK1);
+#undef DUMPREG
+}
+
+static void _dispc_set_pol_freq(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, l);
+ enable_clocks(0);
+}
+
+void dispc_set_pol_freq(enum omap_panel_config config, u8 acbi, u8 acb)
+{
+ _dispc_set_pol_freq((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);
+}
+
+void find_lck_pck_divs(bool is_tft, unsigned long req_pck, unsigned long fck,
+ u16 *lck_div, u16 *pck_div)
+{
+ 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:
+ *lck_div = best_ld;
+ *pck_div = best_pd;
+}
+
+int dispc_calc_clock_div(bool is_tft, unsigned long req_pck,
+ struct dispc_clock_info *cinfo)
+{
+ unsigned long prate;
+ struct dispc_clock_info cur, best;
+ int match = 0;
+ int min_fck_per_pck;
+ unsigned long fck_rate = dss_clk_get_rate(DSS_CLK_FCK1);
+
+ if (cpu_is_omap34xx())
+ prate = clk_get_rate(clk_get_parent(dispc.dpll4_m4_ck));
+ else
+ prate = 0;
+
+ if (req_pck == dispc.cache_req_pck &&
+ ((cpu_is_omap34xx() && prate == dispc.cache_prate) ||
+ dispc.cache_cinfo.fck == fck_rate)) {
+ DSSDBG("dispc clock info found from cache.\n");
+ *cinfo = dispc.cache_cinfo;
+ return 0;
+ }
+
+ min_fck_per_pck = CONFIG_OMAP2_DSS_MIN_FCK_PER_PCK;
+
+ if (min_fck_per_pck &&
+ req_pck * min_fck_per_pck > DISPC_MAX_FCK) {
+ DSSERR("Requested pixel clock not possible with the current "
+ "OMAP2_DSS_MIN_FCK_PER_PCK setting. Turning "
+ "the constraint off.\n");
+ min_fck_per_pck = 0;
+ }
+
+retry:
+ memset(&cur, 0, sizeof(cur));
+ memset(&best, 0, sizeof(best));
+
+ if (cpu_is_omap24xx()) {
+ /* XXX can we change the clock on omap2? */
+ cur.fck = dss_clk_get_rate(DSS_CLK_FCK1);
+ cur.fck_div = 1;
+
+ match = 1;
+
+ find_lck_pck_divs(is_tft, req_pck, cur.fck,
+ &cur.lck_div, &cur.pck_div);
+
+ cur.lck = cur.fck / cur.lck_div;
+ cur.pck = cur.lck / cur.pck_div;
+
+ best = cur;
+
+ goto found;
+ } else if (cpu_is_omap34xx()) {
+ for (cur.fck_div = 16; cur.fck_div > 0; --cur.fck_div) {
+ cur.fck = prate / cur.fck_div * 2;
+
+ if (cur.fck > DISPC_MAX_FCK)
+ continue;
+
+ if (min_fck_per_pck &&
+ cur.fck < req_pck * min_fck_per_pck)
+ continue;
+
+ match = 1;
+
+ find_lck_pck_divs(is_tft, req_pck, cur.fck,
+ &cur.lck_div, &cur.pck_div);
+
+ cur.lck = cur.fck / cur.lck_div;
+ cur.pck = cur.lck / cur.pck_div;
+
+ if (abs(cur.pck - req_pck) < abs(best.pck - req_pck)) {
+ best = cur;
+
+ if (cur.pck == req_pck)
+ goto found;
+ }
+ }
+ } else {
+ BUG();
+ }
+
+found:
+ if (!match) {
+ if (min_fck_per_pck) {
+ DSSERR("Could not find suitable clock settings.\n"
+ "Turning FCK/PCK constraint off and"
+ "trying again.\n");
+ min_fck_per_pck = 0;
+ goto retry;
+ }
+
+ DSSERR("Could not find suitable clock settings.\n");
+
+ return -EINVAL;
+ }
+
+ if (cinfo)
+ *cinfo = best;
+
+ dispc.cache_req_pck = req_pck;
+ dispc.cache_prate = prate;
+ dispc.cache_cinfo = best;
+
+ return 0;
+}
+
+int dispc_set_clock_div(struct dispc_clock_info *cinfo)
+{
+ unsigned long prate;
+ int r;
+
+ if (cpu_is_omap34xx()) {
+ prate = clk_get_rate(clk_get_parent(dispc.dpll4_m4_ck));
+ DSSDBG("dpll4_m4 = %ld\n", prate);
+ }
+
+ DSSDBG("fck = %ld (%d)\n", cinfo->fck, cinfo->fck_div);
+ DSSDBG("lck = %ld (%d)\n", cinfo->lck, cinfo->lck_div);
+ DSSDBG("pck = %ld (%d)\n", cinfo->pck, cinfo->pck_div);
+
+ if (cpu_is_omap34xx()) {
+ r = clk_set_rate(dispc.dpll4_m4_ck, prate / cinfo->fck_div);
+ if (r)
+ return r;
+ }
+
+ dispc_set_lcd_divisor(cinfo->lck_div, cinfo->pck_div);
+
+ return 0;
+}
+
+int dispc_get_clock_div(struct dispc_clock_info *cinfo)
+{
+ cinfo->fck = dss_clk_get_rate(DSS_CLK_FCK1);
+
+ if (cpu_is_omap34xx()) {
+ unsigned long prate;
+ prate = clk_get_rate(clk_get_parent(dispc.dpll4_m4_ck));
+ cinfo->fck_div = prate / (cinfo->fck / 2);
+ } else {
+ cinfo->fck_div = 0;
+ }
+
+ cinfo->lck_div = REG_GET(DISPC_DIVISOR, 23, 16);
+ cinfo->pck_div = REG_GET(DISPC_DIVISOR, 7, 0);
+
+ cinfo->lck = cinfo->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);
+#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. */
+void dispc_irq_handler(void)
+{
+ int i;
+ u32 irqstatus;
+ 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);
+
+#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);
+
+ /* 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 = ®istered_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);
+}
+
+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->disable(mgr->device);
+ break;
+ }
+ }
+
+ if (manager) {
+ 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)
+ manager->device->enable(manager->device);
+ }
+ }
+
+ 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->disable(mgr->device);
+ break;
+ }
+ }
+
+ if (manager) {
+ 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)
+ manager->device->enable(manager->device);
+ }
+ }
+
+ 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->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;
+
+ 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;
+
+ /* 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 */
+ REG_FLD_MOD(DISPC_CONFIG, 1, 9, 9);
+
+ /* L3 firewall setting: enable access to OCM RAM */
+ if (cpu_is_omap24xx())
+ __raw_writel(0x402000b0, OMAP2_IO_ADDRESS(0x680050a0));
+
+ _dispc_setup_color_conv_coef();
+
+ dispc_set_loadmode(OMAP_DSS_LOAD_FRAME_ONLY);
+
+ dispc_read_plane_fifo_sizes();
+}
+
+int dispc_init(void)
+{
+ u32 rev;
+
+ spin_lock_init(&dispc.irq_lock);
+
+ INIT_WORK(&dispc.error_work, dispc_error_worker);
+
+ dispc.base = ioremap(DISPC_BASE, DISPC_SZ_REGS);
+ if (!dispc.base) {
+ DSSERR("can't ioremap DISPC\n");
+ return -ENOMEM;
+ }
+
+ if (cpu_is_omap34xx()) {
+ dispc.dpll4_m4_ck = clk_get(NULL, "dpll4_m4_ck");
+ if (IS_ERR(dispc.dpll4_m4_ck)) {
+ DSSERR("Failed to get dpll4_m4_ck\n");
+ return -ENODEV;
+ }
+ }
+
+ enable_clocks(1);
+
+ _omap_dispc_initial_config();
+
+ _omap_dispc_initialize_irq();
+
+ dispc_save_context();
+
+ rev = dispc_read_reg(DISPC_REVISION);
+ printk(KERN_INFO "OMAP DISPC rev %d.%d\n",
+ FLD_GET(rev, 7, 4), FLD_GET(rev, 3, 0));
+
+ enable_clocks(0);
+
+ return 0;
+}
+
+void dispc_exit(void)
+{
+ if (cpu_is_omap34xx())
+ clk_put(dispc.dpll4_m4_ck);
+ iounmap(dispc.base);
+}
+
+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)
+{
+ 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\n",
+ plane, paddr, screen_width, pos_x, pos_y,
+ width, height,
+ out_width, out_height,
+ ilace, color_mode,
+ rotation, mirror);
+
+ 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);
+
+ enable_clocks(0);
+
+ return r;
+}
--
1.6.4
--
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