+++ /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 <linux/component.h>
-
-#include "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 videomode vm;
- 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.vm.hactive;
- u16 height = rfbi.vm.vactive;
-
- /*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.vm);
-
- 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.vm.hactive = w;
- rfbi.vm.vactive = 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 hactive and vactive fields
- * are expected to be already configured by the panel driver via
- * omapdss_rfbi_set_size()
- */
- rfbi.vm.hsync_len = 1;
- rfbi.vm.hfront_porch = 1;
- rfbi.vm.hback_porch = 1;
- rfbi.vm.vsync_len = 1;
- rfbi.vm.vfront_porch = 0;
- rfbi.vm.vback_porch = 0;
-
- rfbi.vm.flags &= ~DISPLAY_FLAGS_INTERLACED;
- rfbi.vm.flags &= ~DISPLAY_FLAGS_HSYNC_LOW;
- rfbi.vm.flags |= DISPLAY_FLAGS_HSYNC_HIGH;
- rfbi.vm.flags &= ~DISPLAY_FLAGS_VSYNC_LOW;
- rfbi.vm.flags |= DISPLAY_FLAGS_VSYNC_HIGH;
- rfbi.vm.flags &= ~DISPLAY_FLAGS_PIXDATA_NEGEDGE;
- rfbi.vm.flags |= DISPLAY_FLAGS_PIXDATA_POSEDGE;
- rfbi.vm.flags &= ~DISPLAY_FLAGS_DE_LOW;
- rfbi.vm.flags |= DISPLAY_FLAGS_DE_HIGH;
- rfbi.vm.flags &= ~DISPLAY_FLAGS_SYNC_POSEDGE;
- rfbi.vm.flags |= DISPLAY_FLAGS_SYNC_NEGEDGE;
-
- dss_mgr_set_timings(mgr, &rfbi.vm);
-}
-
-static int rfbi_display_enable(struct omap_dss_device *dssdev)
-{
- struct omap_dss_device *out = &rfbi.output;
- int r;
-
- if (!out->dispc_channel_connected) {
- 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 rfbi_uninit_output(struct platform_device *pdev)
-{
- struct omap_dss_device *out = &rfbi.output;
-
- omapdss_unregister_output(out);
-}
-
-/* RFBI HW IP initialisation */
-static int rfbi_bind(struct device *dev, struct device *master, void *data)
-{
- struct platform_device *pdev = to_platform_device(dev);
- 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);
- rfbi.base = devm_ioremap_resource(&pdev->dev, rfbi_mem);
- if (IS_ERR(rfbi.base))
- return PTR_ERR(rfbi.base);
-
- 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 void rfbi_unbind(struct device *dev, struct device *master, void *data)
-{
- struct platform_device *pdev = to_platform_device(dev);
-
- rfbi_uninit_output(pdev);
-
- pm_runtime_disable(&pdev->dev);
-
- return 0;
-}
-
-static const struct component_ops rfbi_component_ops = {
- .bind = rfbi_bind,
- .unbind = rfbi_unbind,
-};
-
-static int rfbi_probe(struct platform_device *pdev)
-{
- return component_add(&pdev->dev, &rfbi_component_ops);
-}
-
-static int rfbi_remove(struct platform_device *pdev)
-{
- component_del(&pdev->dev, &rfbi_component_ops);
- 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 = rfbi_probe,
- .remove = rfbi_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 rfbi_uninit_platform_driver(void)
-{
- platform_driver_unregister(&omap_rfbihw_driver);
-}
projects / users / hch / block.git / commitdiff