summaryrefslogtreecommitdiff
path: root/packages/linux/linux-omap/0005-DSS-RFBI-support-for-OMAP2-3-DSS.patch
diff options
context:
space:
mode:
Diffstat (limited to 'packages/linux/linux-omap/0005-DSS-RFBI-support-for-OMAP2-3-DSS.patch')
-rw-r--r--packages/linux/linux-omap/0005-DSS-RFBI-support-for-OMAP2-3-DSS.patch1254
1 files changed, 0 insertions, 1254 deletions
diff --git a/packages/linux/linux-omap/0005-DSS-RFBI-support-for-OMAP2-3-DSS.patch b/packages/linux/linux-omap/0005-DSS-RFBI-support-for-OMAP2-3-DSS.patch
deleted file mode 100644
index de376e6bd8..0000000000
--- a/packages/linux/linux-omap/0005-DSS-RFBI-support-for-OMAP2-3-DSS.patch
+++ /dev/null
@@ -1,1254 +0,0 @@
-From 029f985ead9e1ea4f5d26c5ee1a234c144d2b418 Mon Sep 17 00:00:00 2001
-From: Tomi Valkeinen <tomi.valkeinen@nokia.com>
-Date: Tue, 4 Nov 2008 16:53:02 +0200
-Subject: [PATCH] DSS: RFBI support for OMAP2/3 DSS
-
-Signed-off-by: Tomi Valkeinen <tomi.valkeinen@nokia.com>
----
- arch/arm/plat-omap/dss/rfbi.c | 1234 +++++++++++++++++++++++++++++++++++++++++
- 1 files changed, 1234 insertions(+), 0 deletions(-)
- create mode 100644 arch/arm/plat-omap/dss/rfbi.c
-
-diff --git a/arch/arm/plat-omap/dss/rfbi.c b/arch/arm/plat-omap/dss/rfbi.c
-new file mode 100644
-index 0000000..31ddd24
---- /dev/null
-+++ b/arch/arm/plat-omap/dss/rfbi.c
-@@ -0,0 +1,1234 @@
-+/*
-+ * linux/arch/arm/plat-omap/dss/rfbi.c
-+ *
-+ * Copyright (C) 2008 Nokia Corporation
-+ * Author: Tomi Valkeinen <tomi.valkeinen@nokia.com>
-+ *
-+ * Some code and ideas taken from drivers/video/omap/ driver
-+ * by Imre Deak.
-+ *
-+ * This program is free software; you can redistribute it and/or modify it
-+ * under the terms of the GNU General Public License version 2 as published by
-+ * the Free Software Foundation.
-+ *
-+ * This program is distributed in the hope that it will be useful, but WITHOUT
-+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
-+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
-+ * more details.
-+ *
-+ * You should have received a copy of the GNU General Public License along with
-+ * this program. If not, see <http://www.gnu.org/licenses/>.
-+ */
-+
-+#define DSS_SUBSYS_NAME "RFBI"
-+
-+#include <linux/kernel.h>
-+#include <linux/dma-mapping.h>
-+#include <linux/vmalloc.h>
-+#include <linux/clk.h>
-+#include <linux/io.h>
-+#include <linux/delay.h>
-+#include <linux/kfifo.h>
-+#include <linux/ktime.h>
-+
-+#include <mach/board.h>
-+#include <mach/display.h>
-+#include "dss.h"
-+
-+/*#define MEASURE_PERF*/
-+
-+#define RFBI_BASE 0x48050800
-+
-+struct rfbi_reg { u16 idx; };
-+
-+#define RFBI_REG(idx) ((const struct rfbi_reg) { idx })
-+
-+#define RFBI_REVISION RFBI_REG(0x0000)
-+#define RFBI_SYSCONFIG RFBI_REG(0x0010)
-+#define RFBI_SYSSTATUS RFBI_REG(0x0014)
-+#define RFBI_CONTROL RFBI_REG(0x0040)
-+#define RFBI_PIXEL_CNT RFBI_REG(0x0044)
-+#define RFBI_LINE_NUMBER RFBI_REG(0x0048)
-+#define RFBI_CMD RFBI_REG(0x004c)
-+#define RFBI_PARAM RFBI_REG(0x0050)
-+#define RFBI_DATA RFBI_REG(0x0054)
-+#define RFBI_READ RFBI_REG(0x0058)
-+#define RFBI_STATUS RFBI_REG(0x005c)
-+
-+#define RFBI_CONFIG(n) RFBI_REG(0x0060 + (n)*0x18)
-+#define RFBI_ONOFF_TIME(n) RFBI_REG(0x0064 + (n)*0x18)
-+#define RFBI_CYCLE_TIME(n) RFBI_REG(0x0068 + (n)*0x18)
-+#define RFBI_DATA_CYCLE1(n) RFBI_REG(0x006c + (n)*0x18)
-+#define RFBI_DATA_CYCLE2(n) RFBI_REG(0x0070 + (n)*0x18)
-+#define RFBI_DATA_CYCLE3(n) RFBI_REG(0x0074 + (n)*0x18)
-+
-+#define RFBI_VSYNC_WIDTH RFBI_REG(0x0090)
-+#define RFBI_HSYNC_WIDTH RFBI_REG(0x0094)
-+
-+#define RFBI_CMD_FIFO_LEN_BYTES (16 * sizeof(struct update_param))
-+
-+#define REG_FLD_MOD(idx, val, start, end) \
-+ rfbi_write_reg(idx, FLD_MOD(rfbi_read_reg(idx), val, start, end))
-+
-+/* To work around an RFBI transfer rate limitation */
-+#define OMAP_RFBI_RATE_LIMIT 1
-+
-+enum omap_rfbi_cycleformat {
-+ OMAP_DSS_RFBI_CYCLEFORMAT_1_1 = 0,
-+ OMAP_DSS_RFBI_CYCLEFORMAT_2_1 = 1,
-+ OMAP_DSS_RFBI_CYCLEFORMAT_3_1 = 2,
-+ OMAP_DSS_RFBI_CYCLEFORMAT_3_2 = 3,
-+};
-+
-+enum omap_rfbi_datatype {
-+ OMAP_DSS_RFBI_DATATYPE_12 = 0,
-+ OMAP_DSS_RFBI_DATATYPE_16 = 1,
-+ OMAP_DSS_RFBI_DATATYPE_18 = 2,
-+ OMAP_DSS_RFBI_DATATYPE_24 = 3,
-+};
-+
-+enum omap_rfbi_parallelmode {
-+ OMAP_DSS_RFBI_PARALLELMODE_8 = 0,
-+ OMAP_DSS_RFBI_PARALLELMODE_9 = 1,
-+ OMAP_DSS_RFBI_PARALLELMODE_12 = 2,
-+ OMAP_DSS_RFBI_PARALLELMODE_16 = 3,
-+};
-+
-+enum update_cmd {
-+ RFBI_CMD_UPDATE = 0,
-+ RFBI_CMD_SYNC = 1,
-+};
-+
-+static int rfbi_convert_timings(struct rfbi_timings *t);
-+static void rfbi_get_clk_info(u32 *clk_period, u32 *max_clk_div);
-+static void process_cmd_fifo(void);
-+
-+static struct {
-+ void __iomem *base;
-+
-+ struct clk *dss_ick;
-+ struct clk *dss1_fck;
-+
-+ unsigned long l4_khz;
-+
-+ enum omap_rfbi_datatype datatype;
-+ enum omap_rfbi_parallelmode parallelmode;
-+
-+ enum omap_rfbi_te_mode te_mode;
-+ int te_enabled;
-+
-+ void (*framedone_callback)(void *data);
-+ void *framedone_callback_data;
-+
-+ struct omap_display *display[2];
-+
-+ struct kfifo *cmd_fifo;
-+ spinlock_t cmd_lock;
-+ struct completion cmd_done;
-+ atomic_t cmd_fifo_full;
-+ atomic_t cmd_pending;
-+#ifdef MEASURE_PERF
-+ ktime_t perf_time;
-+#endif
-+} rfbi;
-+
-+struct update_region {
-+ u16 x;
-+ u16 y;
-+ u16 w;
-+ u16 h;
-+};
-+
-+struct update_param {
-+ u8 rfbi_module;
-+ u8 cmd;
-+
-+ union {
-+ struct update_region r;
-+ struct completion *sync;
-+ } par;
-+};
-+
-+static inline void rfbi_write_reg(const struct rfbi_reg idx, u32 val)
-+{
-+ __raw_writel(val, rfbi.base + idx.idx);
-+}
-+
-+static inline u32 rfbi_read_reg(const struct rfbi_reg idx)
-+{
-+ return __raw_readl(rfbi.base + idx.idx);
-+}
-+
-+static void rfbi_enable_clocks(int enable)
-+{
-+ if (enable) {
-+ clk_enable(rfbi.dss_ick);
-+ clk_enable(rfbi.dss1_fck);
-+ } else {
-+ clk_disable(rfbi.dss1_fck);
-+ clk_disable(rfbi.dss_ick);
-+ }
-+}
-+
-+void omap_rfbi_write_command(const void *buf, u32 len)
-+{
-+ rfbi_enable_clocks(1);
-+ switch (rfbi.parallelmode) {
-+ case OMAP_DSS_RFBI_PARALLELMODE_8:
-+ {
-+ const u8 *b = buf;
-+ for (; len; len--)
-+ rfbi_write_reg(RFBI_CMD, *b++);
-+ break;
-+ }
-+
-+ case OMAP_DSS_RFBI_PARALLELMODE_16:
-+ {
-+ const u16 *w = buf;
-+ BUG_ON(len & 1);
-+ for (; len; len -= 2)
-+ rfbi_write_reg(RFBI_CMD, *w++);
-+ break;
-+ }
-+
-+ case OMAP_DSS_RFBI_PARALLELMODE_9:
-+ case OMAP_DSS_RFBI_PARALLELMODE_12:
-+ default:
-+ BUG();
-+ }
-+ rfbi_enable_clocks(0);
-+}
-+EXPORT_SYMBOL(omap_rfbi_write_command);
-+
-+void omap_rfbi_read_data(void *buf, u32 len)
-+{
-+ rfbi_enable_clocks(1);
-+ switch (rfbi.parallelmode) {
-+ case OMAP_DSS_RFBI_PARALLELMODE_8:
-+ {
-+ u8 *b = buf;
-+ for (; len; len--) {
-+ rfbi_write_reg(RFBI_READ, 0);
-+ *b++ = rfbi_read_reg(RFBI_READ);
-+ }
-+ break;
-+ }
-+
-+ case OMAP_DSS_RFBI_PARALLELMODE_16:
-+ {
-+ u16 *w = buf;
-+ BUG_ON(len & ~1);
-+ for (; len; len -= 2) {
-+ rfbi_write_reg(RFBI_READ, 0);
-+ *w++ = rfbi_read_reg(RFBI_READ);
-+ }
-+ break;
-+ }
-+
-+ case OMAP_DSS_RFBI_PARALLELMODE_9:
-+ case OMAP_DSS_RFBI_PARALLELMODE_12:
-+ default:
-+ BUG();
-+ }
-+ rfbi_enable_clocks(0);
-+}
-+EXPORT_SYMBOL(omap_rfbi_read_data);
-+
-+void omap_rfbi_write_data(const void *buf, u32 len)
-+{
-+ rfbi_enable_clocks(1);
-+ switch (rfbi.parallelmode) {
-+ case OMAP_DSS_RFBI_PARALLELMODE_8:
-+ {
-+ const u8 *b = buf;
-+ for (; len; len--)
-+ rfbi_write_reg(RFBI_PARAM, *b++);
-+ break;
-+ }
-+
-+ case OMAP_DSS_RFBI_PARALLELMODE_16:
-+ {
-+ const u16 *w = buf;
-+ BUG_ON(len & 1);
-+ for (; len; len -= 2)
-+ rfbi_write_reg(RFBI_PARAM, *w++);
-+ break;
-+ }
-+
-+ case OMAP_DSS_RFBI_PARALLELMODE_9:
-+ case OMAP_DSS_RFBI_PARALLELMODE_12:
-+ default:
-+ BUG();
-+
-+ }
-+ rfbi_enable_clocks(0);
-+}
-+EXPORT_SYMBOL(omap_rfbi_write_data);
-+
-+void omap_rfbi_write_pixels(const void *buf, int scr_width, int x, int y,
-+ int w, int h)
-+{
-+ int start_offset = scr_width * y + x;
-+ int horiz_offset = scr_width - w;
-+ int i;
-+
-+ rfbi_enable_clocks(1);
-+
-+ if (rfbi.datatype == OMAP_DSS_RFBI_DATATYPE_16 &&
-+ rfbi.parallelmode == OMAP_DSS_RFBI_PARALLELMODE_8) {
-+ const u16 *pd = buf;
-+ pd += start_offset;
-+
-+ for (; h; --h) {
-+ for (i = 0; i < w; ++i) {
-+ const u8 *b = (const u8 *)pd;
-+ rfbi_write_reg(RFBI_PARAM, *(b+1));
-+ rfbi_write_reg(RFBI_PARAM, *(b+0));
-+ ++pd;
-+ }
-+ pd += horiz_offset;
-+ }
-+ } else if (rfbi.datatype == OMAP_DSS_RFBI_DATATYPE_24 &&
-+ rfbi.parallelmode == OMAP_DSS_RFBI_PARALLELMODE_8) {
-+ const u32 *pd = buf;
-+ pd += start_offset;
-+
-+ for (; h; --h) {
-+ for (i = 0; i < w; ++i) {
-+ const u8 *b = (const u8 *)pd;
-+ rfbi_write_reg(RFBI_PARAM, *(b+2));
-+ rfbi_write_reg(RFBI_PARAM, *(b+1));
-+ rfbi_write_reg(RFBI_PARAM, *(b+0));
-+ ++pd;
-+ }
-+ pd += horiz_offset;
-+ }
-+ } else if (rfbi.datatype == OMAP_DSS_RFBI_DATATYPE_16 &&
-+ rfbi.parallelmode == OMAP_DSS_RFBI_PARALLELMODE_16) {
-+ const u16 *pd = buf;
-+ pd += start_offset;
-+
-+ for (; h; --h) {
-+ for (i = 0; i < w; ++i) {
-+ rfbi_write_reg(RFBI_PARAM, *pd);
-+ ++pd;
-+ }
-+ pd += horiz_offset;
-+ }
-+ } else {
-+ BUG();
-+ }
-+
-+ rfbi_enable_clocks(0);
-+}
-+EXPORT_SYMBOL(omap_rfbi_write_pixels);
-+
-+void rfbi_transfer_area(int width, int height,
-+ void (callback)(void *data), void *data)
-+{
-+ u32 l;
-+
-+ /*BUG_ON(callback == 0);*/
-+ BUG_ON(rfbi.framedone_callback != NULL);
-+
-+ DSSDBG("rfbi_transfer_area %dx%d\n", width, height);
-+
-+ dispc_set_lcd_size(width, height);
-+
-+ dispc_enable_lcd_out(1);
-+
-+ rfbi.framedone_callback = callback;
-+ rfbi.framedone_callback_data = data;
-+
-+ rfbi_enable_clocks(1);
-+
-+#ifdef MEASURE_PERF
-+ rfbi.perf_time = ktime_get();
-+#endif
-+ rfbi_write_reg(RFBI_PIXEL_CNT, width * height);
-+
-+ l = rfbi_read_reg(RFBI_CONTROL);
-+ l = FLD_MOD(l, 1, 0, 0); /* enable */
-+ if (!rfbi.te_enabled)
-+ l = FLD_MOD(l, 1, 4, 4); /* ITE */
-+
-+ rfbi_write_reg(RFBI_CONTROL, l);
-+}
-+
-+static void framedone_callback(void *data, u32 mask)
-+{
-+ void (*callback)(void *data);
-+
-+#ifdef MEASURE_PERF
-+ {
-+ ktime_t t = ktime_get();
-+ t = ktime_sub(t, rfbi.perf_time);
-+ DSSDBG("FRAMEDONE in %lld ns\n", ktime_to_ns(t));
-+ }
-+#else
-+ DSSDBG("FRAMEDONE\n");
-+#endif
-+
-+ REG_FLD_MOD(RFBI_CONTROL, 0, 0, 0);
-+
-+ rfbi_enable_clocks(0);
-+
-+ callback = rfbi.framedone_callback;
-+ rfbi.framedone_callback = NULL;
-+
-+ /*callback(rfbi.framedone_callback_data);*/
-+
-+ atomic_set(&rfbi.cmd_pending, 0);
-+
-+ process_cmd_fifo();
-+}
-+
-+#if 1 /* VERBOSE */
-+static void rfbi_print_timings(void)
-+{
-+ u32 l;
-+ u32 time;
-+
-+ l = rfbi_read_reg(RFBI_CONFIG(0));
-+ time = 1000000000 / rfbi.l4_khz;
-+ if (l & (1 << 4))
-+ time *= 2;
-+
-+ DSSDBG("Tick time %u ps\n", time);
-+ l = rfbi_read_reg(RFBI_ONOFF_TIME(0));
-+ DSSDBG("CSONTIME %d, CSOFFTIME %d, WEONTIME %d, WEOFFTIME %d, "
-+ "REONTIME %d, REOFFTIME %d\n",
-+ l & 0x0f, (l >> 4) & 0x3f, (l >> 10) & 0x0f, (l >> 14) & 0x3f,
-+ (l >> 20) & 0x0f, (l >> 24) & 0x3f);
-+
-+ l = rfbi_read_reg(RFBI_CYCLE_TIME(0));
-+ DSSDBG("WECYCLETIME %d, RECYCLETIME %d, CSPULSEWIDTH %d, "
-+ "ACCESSTIME %d\n",
-+ (l & 0x3f), (l >> 6) & 0x3f, (l >> 12) & 0x3f,
-+ (l >> 22) & 0x3f);
-+}
-+#else
-+static void rfbi_print_timings(void) {}
-+#endif
-+
-+
-+
-+
-+static u32 extif_clk_period;
-+
-+static inline unsigned long round_to_extif_ticks(unsigned long ps, int div)
-+{
-+ int bus_tick = extif_clk_period * div;
-+ return (ps + bus_tick - 1) / bus_tick * bus_tick;
-+}
-+
-+static int calc_reg_timing(struct rfbi_timings *t, int div)
-+{
-+ t->clk_div = div;
-+
-+ t->cs_on_time = round_to_extif_ticks(t->cs_on_time, div);
-+
-+ t->we_on_time = round_to_extif_ticks(t->we_on_time, div);
-+ t->we_off_time = round_to_extif_ticks(t->we_off_time, div);
-+ t->we_cycle_time = round_to_extif_ticks(t->we_cycle_time, div);
-+
-+ t->re_on_time = round_to_extif_ticks(t->re_on_time, div);
-+ t->re_off_time = round_to_extif_ticks(t->re_off_time, div);
-+ t->re_cycle_time = round_to_extif_ticks(t->re_cycle_time, div);
-+
-+ t->access_time = round_to_extif_ticks(t->access_time, div);
-+ t->cs_off_time = round_to_extif_ticks(t->cs_off_time, div);
-+ t->cs_pulse_width = round_to_extif_ticks(t->cs_pulse_width, div);
-+
-+ DSSDBG("[reg]cson %d csoff %d reon %d reoff %d\n",
-+ t->cs_on_time, t->cs_off_time, t->re_on_time, t->re_off_time);
-+ DSSDBG("[reg]weon %d weoff %d recyc %d wecyc %d\n",
-+ t->we_on_time, t->we_off_time, t->re_cycle_time,
-+ t->we_cycle_time);
-+ DSSDBG("[reg]rdaccess %d cspulse %d\n",
-+ t->access_time, t->cs_pulse_width);
-+
-+ return rfbi_convert_timings(t);
-+}
-+
-+static int calc_extif_timings(struct rfbi_timings *t)
-+{
-+ u32 max_clk_div;
-+ int div;
-+
-+ rfbi_get_clk_info(&extif_clk_period, &max_clk_div);
-+ for (div = 1; div <= max_clk_div; div++) {
-+ if (calc_reg_timing(t, div) == 0)
-+ break;
-+ }
-+
-+ if (div <= max_clk_div)
-+ return 0;
-+
-+ DSSERR("can't setup timings\n");
-+ return -1;
-+}
-+
-+
-+void rfbi_set_timings(int rfbi_module, struct rfbi_timings *t)
-+{
-+ int r;
-+
-+ if (!t->converted) {
-+ r = calc_extif_timings(t);
-+ if (r < 0)
-+ DSSERR("Failed to calc timings\n");
-+ }
-+
-+ BUG_ON(!t->converted);
-+
-+ rfbi_enable_clocks(1);
-+ rfbi_write_reg(RFBI_ONOFF_TIME(rfbi_module), t->tim[0]);
-+ rfbi_write_reg(RFBI_CYCLE_TIME(rfbi_module), t->tim[1]);
-+
-+ /* TIMEGRANULARITY */
-+ REG_FLD_MOD(RFBI_CONFIG(rfbi_module),
-+ (t->tim[2] ? 1 : 0), 4, 4);
-+
-+ rfbi_print_timings();
-+ rfbi_enable_clocks(0);
-+}
-+
-+static int ps_to_rfbi_ticks(int time, int div)
-+{
-+ unsigned long tick_ps;
-+ int ret;
-+
-+ /* Calculate in picosecs to yield more exact results */
-+ tick_ps = 1000000000 / (rfbi.l4_khz) * div;
-+
-+ ret = (time + tick_ps - 1) / tick_ps;
-+
-+ return ret;
-+}
-+
-+#ifdef OMAP_RFBI_RATE_LIMIT
-+unsigned long rfbi_get_max_tx_rate(void)
-+{
-+ unsigned long l4_rate, dss1_rate;
-+ int min_l4_ticks = 0;
-+ int i;
-+
-+ /* According to TI this can't be calculated so make the
-+ * adjustments for a couple of known frequencies and warn for
-+ * others.
-+ */
-+ static const struct {
-+ unsigned long l4_clk; /* HZ */
-+ unsigned long dss1_clk; /* HZ */
-+ unsigned long min_l4_ticks;
-+ } ftab[] = {
-+ { 55, 132, 7, }, /* 7.86 MPix/s */
-+ { 110, 110, 12, }, /* 9.16 MPix/s */
-+ { 110, 132, 10, }, /* 11 Mpix/s */
-+ { 120, 120, 10, }, /* 12 Mpix/s */
-+ { 133, 133, 10, }, /* 13.3 Mpix/s */
-+ };
-+
-+ l4_rate = rfbi.l4_khz / 1000;
-+ dss1_rate = clk_get_rate(rfbi.dss1_fck) / 1000000;
-+
-+ for (i = 0; i < ARRAY_SIZE(ftab); i++) {
-+ /* Use a window instead of an exact match, to account
-+ * for different DPLL multiplier / divider pairs.
-+ */
-+ if (abs(ftab[i].l4_clk - l4_rate) < 3 &&
-+ abs(ftab[i].dss1_clk - dss1_rate) < 3) {
-+ min_l4_ticks = ftab[i].min_l4_ticks;
-+ break;
-+ }
-+ }
-+ if (i == ARRAY_SIZE(ftab)) {
-+ /* Can't be sure, return anyway the maximum not
-+ * rate-limited. This might cause a problem only for the
-+ * tearing synchronisation.
-+ */
-+ DSSERR("can't determine maximum RFBI transfer rate\n");
-+ return rfbi.l4_khz * 1000;
-+ }
-+ return rfbi.l4_khz * 1000 / min_l4_ticks;
-+}
-+#else
-+int rfbi_get_max_tx_rate(void)
-+{
-+ return rfbi.l4_khz * 1000;
-+}
-+#endif
-+
-+static void rfbi_get_clk_info(u32 *clk_period, u32 *max_clk_div)
-+{
-+ *clk_period = 1000000000 / rfbi.l4_khz;
-+ *max_clk_div = 2;
-+}
-+
-+static int rfbi_convert_timings(struct rfbi_timings *t)
-+{
-+ u32 l;
-+ int reon, reoff, weon, weoff, cson, csoff, cs_pulse;
-+ int actim, recyc, wecyc;
-+ int div = t->clk_div;
-+
-+ if (div <= 0 || div > 2)
-+ return -1;
-+
-+ /* Make sure that after conversion it still holds that:
-+ * weoff > weon, reoff > reon, recyc >= reoff, wecyc >= weoff,
-+ * csoff > cson, csoff >= max(weoff, reoff), actim > reon
-+ */
-+ weon = ps_to_rfbi_ticks(t->we_on_time, div);
-+ weoff = ps_to_rfbi_ticks(t->we_off_time, div);
-+ if (weoff <= weon)
-+ weoff = weon + 1;
-+ if (weon > 0x0f)
-+ return -1;
-+ if (weoff > 0x3f)
-+ return -1;
-+
-+ reon = ps_to_rfbi_ticks(t->re_on_time, div);
-+ reoff = ps_to_rfbi_ticks(t->re_off_time, div);
-+ if (reoff <= reon)
-+ reoff = reon + 1;
-+ if (reon > 0x0f)
-+ return -1;
-+ if (reoff > 0x3f)
-+ return -1;
-+
-+ cson = ps_to_rfbi_ticks(t->cs_on_time, div);
-+ csoff = ps_to_rfbi_ticks(t->cs_off_time, div);
-+ if (csoff <= cson)
-+ csoff = cson + 1;
-+ if (csoff < max(weoff, reoff))
-+ csoff = max(weoff, reoff);
-+ if (cson > 0x0f)
-+ return -1;
-+ if (csoff > 0x3f)
-+ return -1;
-+
-+ l = cson;
-+ l |= csoff << 4;
-+ l |= weon << 10;
-+ l |= weoff << 14;
-+ l |= reon << 20;
-+ l |= reoff << 24;
-+
-+ t->tim[0] = l;
-+
-+ actim = ps_to_rfbi_ticks(t->access_time, div);
-+ if (actim <= reon)
-+ actim = reon + 1;
-+ if (actim > 0x3f)
-+ return -1;
-+
-+ wecyc = ps_to_rfbi_ticks(t->we_cycle_time, div);
-+ if (wecyc < weoff)
-+ wecyc = weoff;
-+ if (wecyc > 0x3f)
-+ return -1;
-+
-+ recyc = ps_to_rfbi_ticks(t->re_cycle_time, div);
-+ if (recyc < reoff)
-+ recyc = reoff;
-+ if (recyc > 0x3f)
-+ return -1;
-+
-+ cs_pulse = ps_to_rfbi_ticks(t->cs_pulse_width, div);
-+ if (cs_pulse > 0x3f)
-+ return -1;
-+
-+ l = wecyc;
-+ l |= recyc << 6;
-+ l |= cs_pulse << 12;
-+ l |= actim << 22;
-+
-+ t->tim[1] = l;
-+
-+ t->tim[2] = div - 1;
-+
-+ t->converted = 1;
-+
-+ return 0;
-+}
-+
-+/* xxx FIX module selection missing */
-+int omap_rfbi_setup_te(enum omap_rfbi_te_mode mode,
-+ unsigned hs_pulse_time, unsigned vs_pulse_time,
-+ int hs_pol_inv, int vs_pol_inv, int extif_div)
-+{
-+ int hs, vs;
-+ int min;
-+ u32 l;
-+
-+ hs = ps_to_rfbi_ticks(hs_pulse_time, 1);
-+ vs = ps_to_rfbi_ticks(vs_pulse_time, 1);
-+ if (hs < 2)
-+ return -EDOM;
-+ if (mode == OMAP_DSS_RFBI_TE_MODE_2)
-+ min = 2;
-+ else /* OMAP_DSS_RFBI_TE_MODE_1 */
-+ min = 4;
-+ if (vs < min)
-+ return -EDOM;
-+ if (vs == hs)
-+ return -EINVAL;
-+ rfbi.te_mode = mode;
-+ DSSDBG("setup_te: mode %d hs %d vs %d hs_inv %d vs_inv %d\n",
-+ mode, hs, vs, hs_pol_inv, vs_pol_inv);
-+
-+ rfbi_enable_clocks(1);
-+ rfbi_write_reg(RFBI_HSYNC_WIDTH, hs);
-+ rfbi_write_reg(RFBI_VSYNC_WIDTH, vs);
-+
-+ l = rfbi_read_reg(RFBI_CONFIG(0));
-+ if (hs_pol_inv)
-+ l &= ~(1 << 21);
-+ else
-+ l |= 1 << 21;
-+ if (vs_pol_inv)
-+ l &= ~(1 << 20);
-+ else
-+ l |= 1 << 20;
-+ rfbi_enable_clocks(0);
-+
-+ return 0;
-+}
-+EXPORT_SYMBOL(omap_rfbi_setup_te);
-+
-+/* xxx FIX module selection missing */
-+int omap_rfbi_enable_te(int enable, unsigned line)
-+{
-+ u32 l;
-+
-+ DSSDBG("te %d line %d mode %d\n", enable, line, rfbi.te_mode);
-+ if (line > (1 << 11) - 1)
-+ return -EINVAL;
-+
-+ rfbi_enable_clocks(1);
-+ l = rfbi_read_reg(RFBI_CONFIG(0));
-+ l &= ~(0x3 << 2);
-+ if (enable) {
-+ rfbi.te_enabled = 1;
-+ l |= rfbi.te_mode << 2;
-+ } else
-+ rfbi.te_enabled = 0;
-+ rfbi_write_reg(RFBI_CONFIG(0), l);
-+ rfbi_write_reg(RFBI_LINE_NUMBER, line);
-+ rfbi_enable_clocks(0);
-+
-+ return 0;
-+}
-+EXPORT_SYMBOL(omap_rfbi_enable_te);
-+
-+#if 0
-+static void rfbi_enable_config(int enable1, int enable2)
-+{
-+ u32 l;
-+ int cs = 0;
-+
-+ if (enable1)
-+ cs |= 1<<0;
-+ if (enable2)
-+ cs |= 1<<1;
-+
-+ rfbi_enable_clocks(1);
-+
-+ l = rfbi_read_reg(RFBI_CONTROL);
-+
-+ l = FLD_MOD(l, cs, 3, 2);
-+ l = FLD_MOD(l, 0, 1, 1);
-+
-+ rfbi_write_reg(RFBI_CONTROL, l);
-+
-+
-+ l = rfbi_read_reg(RFBI_CONFIG(0));
-+ l = FLD_MOD(l, 0, 3, 2); /* TRIGGERMODE: ITE */
-+ /*l |= FLD_VAL(2, 8, 7); */ /* L4FORMAT, 2pix/L4 */
-+ /*l |= FLD_VAL(0, 8, 7); */ /* L4FORMAT, 1pix/L4 */
-+
-+ l = FLD_MOD(l, 0, 16, 16); /* A0POLARITY */
-+ l = FLD_MOD(l, 1, 20, 20); /* TE_VSYNC_POLARITY */
-+ l = FLD_MOD(l, 1, 21, 21); /* HSYNCPOLARITY */
-+
-+ l = FLD_MOD(l, OMAP_DSS_RFBI_PARALLELMODE_8, 1, 0);
-+ rfbi_write_reg(RFBI_CONFIG(0), l);
-+
-+ rfbi_enable_clocks(0);
-+}
-+#endif
-+
-+int rfbi_configure(int rfbi_module, int bpp, int lines)
-+{
-+ u32 l;
-+ int cycle1 = 0, cycle2 = 0, cycle3 = 0;
-+ enum omap_rfbi_cycleformat cycleformat;
-+ enum omap_rfbi_datatype datatype;
-+ enum omap_rfbi_parallelmode parallelmode;
-+
-+ switch (bpp) {
-+ case 12:
-+ datatype = OMAP_DSS_RFBI_DATATYPE_12;
-+ break;
-+ case 16:
-+ datatype = OMAP_DSS_RFBI_DATATYPE_16;
-+ break;
-+ case 18:
-+ datatype = OMAP_DSS_RFBI_DATATYPE_18;
-+ break;
-+ case 24:
-+ datatype = OMAP_DSS_RFBI_DATATYPE_24;
-+ break;
-+ default:
-+ BUG();
-+ return 1;
-+ }
-+ rfbi.datatype = datatype;
-+
-+ switch (lines) {
-+ case 8:
-+ parallelmode = OMAP_DSS_RFBI_PARALLELMODE_8;
-+ break;
-+ case 9:
-+ parallelmode = OMAP_DSS_RFBI_PARALLELMODE_9;
-+ break;
-+ case 12:
-+ parallelmode = OMAP_DSS_RFBI_PARALLELMODE_12;
-+ break;
-+ case 16:
-+ parallelmode = OMAP_DSS_RFBI_PARALLELMODE_16;
-+ break;
-+ default:
-+ BUG();
-+ return 1;
-+ }
-+ rfbi.parallelmode = parallelmode;
-+
-+ if ((bpp % lines) == 0) {
-+ switch (bpp / lines) {
-+ case 1:
-+ cycleformat = OMAP_DSS_RFBI_CYCLEFORMAT_1_1;
-+ break;
-+ case 2:
-+ cycleformat = OMAP_DSS_RFBI_CYCLEFORMAT_2_1;
-+ break;
-+ case 3:
-+ cycleformat = OMAP_DSS_RFBI_CYCLEFORMAT_3_1;
-+ break;
-+ default:
-+ BUG();
-+ return 1;
-+ }
-+ } else if ((2 * bpp % lines) == 0) {
-+ if ((2 * bpp / lines) == 3)
-+ cycleformat = OMAP_DSS_RFBI_CYCLEFORMAT_3_2;
-+ else {
-+ BUG();
-+ return 1;
-+ }
-+ } else {
-+ BUG();
-+ return 1;
-+ }
-+
-+ switch (cycleformat) {
-+ case OMAP_DSS_RFBI_CYCLEFORMAT_1_1:
-+ cycle1 = lines;
-+ break;
-+
-+ case OMAP_DSS_RFBI_CYCLEFORMAT_2_1:
-+ cycle1 = lines;
-+ cycle2 = lines;
-+ break;
-+
-+ case OMAP_DSS_RFBI_CYCLEFORMAT_3_1:
-+ cycle1 = lines;
-+ cycle2 = lines;
-+ cycle3 = lines;
-+ break;
-+
-+ case OMAP_DSS_RFBI_CYCLEFORMAT_3_2:
-+ cycle1 = lines;
-+ cycle2 = (lines / 2) | ((lines / 2) << 16);
-+ cycle3 = (lines << 16);
-+ break;
-+ }
-+
-+ rfbi_enable_clocks(1);
-+
-+ REG_FLD_MOD(RFBI_CONTROL, 0, 3, 2); /* clear CS */
-+
-+ l = 0;
-+ l |= FLD_VAL(parallelmode, 1, 0);
-+ l |= FLD_VAL(0, 3, 2); /* TRIGGERMODE: ITE */
-+ l |= FLD_VAL(0, 4, 4); /* TIMEGRANULARITY */
-+ l |= FLD_VAL(datatype, 6, 5);
-+ /* l |= FLD_VAL(2, 8, 7); */ /* L4FORMAT, 2pix/L4 */
-+ l |= FLD_VAL(0, 8, 7); /* L4FORMAT, 1pix/L4 */
-+ l |= FLD_VAL(cycleformat, 10, 9);
-+ l |= FLD_VAL(0, 12, 11); /* UNUSEDBITS */
-+ l |= FLD_VAL(0, 16, 16); /* A0POLARITY */
-+ l |= FLD_VAL(0, 17, 17); /* REPOLARITY */
-+ l |= FLD_VAL(0, 18, 18); /* WEPOLARITY */
-+ l |= FLD_VAL(0, 19, 19); /* CSPOLARITY */
-+ l |= FLD_VAL(1, 20, 20); /* TE_VSYNC_POLARITY */
-+ l |= FLD_VAL(1, 21, 21); /* HSYNCPOLARITY */
-+ rfbi_write_reg(RFBI_CONFIG(rfbi_module), l);
-+
-+ rfbi_write_reg(RFBI_DATA_CYCLE1(rfbi_module), cycle1);
-+ rfbi_write_reg(RFBI_DATA_CYCLE2(rfbi_module), cycle2);
-+ rfbi_write_reg(RFBI_DATA_CYCLE3(rfbi_module), cycle3);
-+
-+
-+ l = rfbi_read_reg(RFBI_CONTROL);
-+ l = FLD_MOD(l, rfbi_module+1, 3, 2); /* Select CSx */
-+ l = FLD_MOD(l, 0, 1, 1); /* clear bypass */
-+ rfbi_write_reg(RFBI_CONTROL, l);
-+
-+
-+ DSSDBG("RFBI config: bpp %d, lines %d, cycles: 0x%x 0x%x 0x%x\n",
-+ bpp, lines, cycle1, cycle2, cycle3);
-+
-+ rfbi_enable_clocks(0);
-+
-+ return 0;
-+}
-+
-+static int rfbi_find_display(struct omap_display *disp)
-+{
-+ if (disp == rfbi.display[0])
-+ return 0;
-+
-+ if (disp == rfbi.display[1])
-+ return 1;
-+
-+ BUG();
-+ return -1;
-+}
-+
-+
-+static void signal_fifo_waiters(void)
-+{
-+ if (atomic_read(&rfbi.cmd_fifo_full) > 0) {
-+ /* DSSDBG("SIGNALING: Fifo not full for waiter!\n"); */
-+ complete(&rfbi.cmd_done);
-+ atomic_dec(&rfbi.cmd_fifo_full);
-+ }
-+}
-+
-+/* returns 1 for async op, and 0 for sync op */
-+static int do_update(struct omap_display *display, struct update_region *upd)
-+{
-+ int x = upd->x;
-+ int y = upd->y;
-+ int w = upd->w;
-+ int h = upd->h;
-+
-+ if (display->manager->caps & OMAP_DSS_OVL_MGR_CAP_DISPC) {
-+ /*display->ctrl->enable_te(display, 1); */
-+
-+ dispc_setup_partial_planes(display, &x, &y, &w, &h);
-+
-+ display->ctrl->setup_update(display, x, y, w, h);
-+
-+ rfbi_transfer_area(w, h, NULL, NULL);
-+
-+ return 1;
-+ } else {
-+ struct omap_overlay *ovl;
-+ void *addr;
-+ int scr_width;
-+#ifdef MEASURE_PERF
-+ ktime_t t1, t2;
-+#endif
-+ ovl = &display->manager->overlays[0];
-+ scr_width = ovl->info.screen_width;
-+ addr = ovl->info.vaddr;
-+
-+ display->ctrl->setup_update(display, x, y, w, h);
-+
-+#ifdef MEASURE_PERF
-+ t1 = ktime_get();
-+#endif
-+ omap_rfbi_write_pixels(addr, scr_width,
-+ x, y, w, h);
-+#ifdef MEASURE_PERF
-+ t2 = ktime_get();
-+ t1 = ktime_sub(t2, t1);
-+ DSSDBG("L4 FRAMEDONE in %lld ns\n",
-+ ktime_to_ns(t1));
-+#endif
-+ return 0;
-+ }
-+}
-+
-+static void process_cmd_fifo(void)
-+{
-+ int len;
-+ struct update_param p;
-+ struct omap_display *display;
-+ unsigned long flags;
-+
-+ if (atomic_inc_return(&rfbi.cmd_pending) != 1)
-+ return;
-+
-+ while (true) {
-+ spin_lock_irqsave(rfbi.cmd_fifo->lock, flags);
-+
-+ len = __kfifo_get(rfbi.cmd_fifo, (unsigned char *)&p,
-+ sizeof(struct update_param));
-+ if (len == 0) {
-+ DSSDBG("nothing more in fifo\n");
-+ atomic_set(&rfbi.cmd_pending, 0);
-+ spin_unlock_irqrestore(rfbi.cmd_fifo->lock, flags);
-+ break;
-+ }
-+
-+ /* DSSDBG("fifo full %d\n", rfbi.cmd_fifo_full.counter);*/
-+
-+ spin_unlock_irqrestore(rfbi.cmd_fifo->lock, flags);
-+
-+ BUG_ON(len != sizeof(struct update_param));
-+ BUG_ON(p.rfbi_module > 1);
-+
-+ display = rfbi.display[p.rfbi_module];
-+
-+ if (p.cmd == RFBI_CMD_UPDATE) {
-+ if (do_update(display, &p.par.r))
-+ break; /* async op */
-+ } else if (p.cmd == RFBI_CMD_SYNC) {
-+ DSSDBG("Signaling SYNC done!\n");
-+ complete(p.par.sync);
-+ } else
-+ BUG();
-+ }
-+
-+ signal_fifo_waiters();
-+}
-+
-+static void rfbi_push_cmd(struct update_param *p)
-+{
-+ int ret;
-+
-+ while (1) {
-+ unsigned long flags;
-+ int available;
-+
-+ spin_lock_irqsave(rfbi.cmd_fifo->lock, flags);
-+ available = RFBI_CMD_FIFO_LEN_BYTES -
-+ __kfifo_len(rfbi.cmd_fifo);
-+
-+/* DSSDBG("%d bytes left in fifo\n", available); */
-+ if (available < sizeof(struct update_param)) {
-+ DSSDBG("Going to wait because FIFO FULL..\n");
-+ spin_unlock_irqrestore(rfbi.cmd_fifo->lock, flags);
-+ atomic_inc(&rfbi.cmd_fifo_full);
-+ wait_for_completion(&rfbi.cmd_done);
-+ /*DSSDBG("Woke up because fifo not full anymore\n");*/
-+ continue;
-+ }
-+
-+ ret = __kfifo_put(rfbi.cmd_fifo, (unsigned char *)p,
-+ sizeof(struct update_param));
-+/* DSSDBG("pushed %d bytes\n", ret);*/
-+
-+ spin_unlock_irqrestore(rfbi.cmd_fifo->lock, flags);
-+
-+ BUG_ON(ret != sizeof(struct update_param));
-+
-+ break;
-+ }
-+}
-+
-+static void rfbi_push_update(int rfbi_module, int x, int y, int w, int h)
-+{
-+ struct update_param p;
-+
-+ p.rfbi_module = rfbi_module;
-+ p.cmd = RFBI_CMD_UPDATE;
-+
-+ p.par.r.x = x;
-+ p.par.r.y = y;
-+ p.par.r.w = w;
-+ p.par.r.h = h;
-+
-+ DSSDBG("RFBI pushed %d,%d %dx%d\n", x, y, w, h);
-+
-+ rfbi_push_cmd(&p);
-+
-+ process_cmd_fifo();
-+}
-+
-+static void rfbi_push_sync(int rfbi_module, struct completion *sync_comp)
-+{
-+ struct update_param p;
-+
-+ p.rfbi_module = rfbi_module;
-+ p.cmd = RFBI_CMD_SYNC;
-+ p.par.sync = sync_comp;
-+
-+ rfbi_push_cmd(&p);
-+
-+ DSSDBG("RFBI sync pushed to cmd fifo\n");
-+
-+ process_cmd_fifo();
-+}
-+
-+int rfbi_init(void)
-+{
-+ u32 rev;
-+ u32 l;
-+
-+ spin_lock_init(&rfbi.cmd_lock);
-+ rfbi.cmd_fifo = kfifo_alloc(RFBI_CMD_FIFO_LEN_BYTES, GFP_KERNEL,
-+ &rfbi.cmd_lock);
-+ if (IS_ERR(rfbi.cmd_fifo))
-+ return -ENOMEM;
-+
-+ init_completion(&rfbi.cmd_done);
-+ atomic_set(&rfbi.cmd_fifo_full, 0);
-+ atomic_set(&rfbi.cmd_pending, 0);
-+
-+ rfbi.base = ioremap(RFBI_BASE, SZ_256);
-+ if (!rfbi.base) {
-+ DSSERR("can't ioremap RFBI\n");
-+ return -ENOMEM;
-+ }
-+
-+ rfbi.dss_ick = get_dss_ick();
-+ rfbi.dss1_fck = get_dss1_fck();
-+
-+ rfbi_enable_clocks(1);
-+
-+ msleep(10);
-+
-+ rfbi.l4_khz = clk_get_rate(rfbi.dss_ick) / 1000;
-+
-+ /* Enable autoidle and smart-idle */
-+ l = rfbi_read_reg(RFBI_SYSCONFIG);
-+ l |= (1 << 0) | (2 << 3);
-+ rfbi_write_reg(RFBI_SYSCONFIG, l);
-+
-+ rev = rfbi_read_reg(RFBI_REVISION);
-+ printk(KERN_INFO "OMAP RFBI rev %d.%d\n",
-+ FLD_GET(rev, 7, 4), FLD_GET(rev, 3, 0));
-+
-+ rfbi_enable_clocks(0);
-+
-+ return 0;
-+}
-+
-+void rfbi_exit(void)
-+{
-+ DSSDBG("rfbi_exit\n");
-+
-+ kfifo_free(rfbi.cmd_fifo);
-+
-+ iounmap(rfbi.base);
-+}
-+
-+/* struct omap_display support */
-+static void rfbi_display_set_mode(struct omap_display *display,
-+ int x_res, int y_res, int bpp)
-+{
-+ display->bpp = bpp;
-+
-+ dispc_set_tft_data_lines(display->bpp);
-+
-+ if (rfbi_configure(display->hw_config.u.rfbi.channel,
-+ display->bpp,
-+ display->hw_config.u.rfbi.data_lines) != 0) {
-+ DSSERR("can't configure rfbi\n");
-+ }
-+
-+ display->ctrl->set_mode(display, x_res, y_res, bpp);
-+}
-+
-+
-+static int rfbi_display_update(struct omap_display *display,
-+ int x, int y, int w, int h)
-+{
-+ int rfbi_module;
-+
-+ if (w == 0 || h == 0)
-+ return 0;
-+
-+ rfbi_module = rfbi_find_display(display);
-+
-+ rfbi_push_update(rfbi_module, x, y, w, h);
-+
-+ return 0;
-+}
-+
-+static int rfbi_display_sync(struct omap_display *display)
-+{
-+ struct completion sync_comp;
-+ int rfbi_module;
-+
-+ rfbi_module = rfbi_find_display(display);
-+
-+ init_completion(&sync_comp);
-+ rfbi_push_sync(rfbi_module, &sync_comp);
-+ DSSDBG("Waiting for SYNC to happen...\n");
-+ wait_for_completion(&sync_comp);
-+ DSSDBG("Released from SYNC\n");
-+ return 0;
-+}
-+
-+static int rfbi_display_enable_te(struct omap_display *display, int enable)
-+{
-+ display->ctrl->enable_te(display, enable);
-+ return 0;
-+}
-+
-+static int rfbi_display_enable(struct omap_display *display)
-+{
-+ int r;
-+
-+ BUG_ON(display->panel == NULL || display->ctrl == NULL);
-+
-+ r = omap_dispc_register_isr(framedone_callback, NULL,
-+ DISPC_IRQ_FRAMEDONE);
-+ if (r) {
-+ DSSERR("can't get FRAMEDONE irq\n");
-+ return r;
-+ }
-+
-+ dispc_set_lcd_display_type(OMAP_DSS_LCD_DISPLAY_TFT);
-+
-+ dispc_set_parallel_interface_mode(OMAP_DSS_PARALLELMODE_RFBI);
-+
-+ /* FIX select 16bpp as default */
-+ rfbi_configure(display->hw_config.u.rfbi.channel,
-+ 16,
-+ display->hw_config.u.rfbi.data_lines);
-+
-+ rfbi_set_timings(display->hw_config.u.rfbi.channel,
-+ &display->ctrl->timings);
-+
-+ display->ctrl->enable(display);
-+
-+ return 0;
-+}
-+
-+static void rfbi_display_disable(struct omap_display *display)
-+{
-+ display->ctrl->disable(display);
-+ omap_dispc_unregister_isr(framedone_callback);
-+}
-+
-+void rfbi_init_display(struct omap_display *display)
-+{
-+ display->enable = rfbi_display_enable;
-+ display->disable = rfbi_display_disable;
-+ display->set_mode = rfbi_display_set_mode;
-+ display->update = rfbi_display_update;
-+ display->sync = rfbi_display_sync;
-+ display->enable_te = rfbi_display_enable_te;
-+
-+ rfbi.display[display->hw_config.u.rfbi.channel] = display;
-+
-+ display->caps = OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE;
-+}
---
-1.5.6.3
-
generated by cgit v1.2.3 (git 2.25.1) at 2025-02-07 09:28:31 +0000