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