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path: root/drivers/video/mxc/ldb.c
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Diffstat (limited to 'drivers/video/mxc/ldb.c')
-rw-r--r--drivers/video/mxc/ldb.c1448
1 files changed, 1448 insertions, 0 deletions
diff --git a/drivers/video/mxc/ldb.c b/drivers/video/mxc/ldb.c
new file mode 100644
index 000000000000..fe58146df3cb
--- /dev/null
+++ b/drivers/video/mxc/ldb.c
@@ -0,0 +1,1448 @@
+/*
+ * Copyright (C) 2010 Freescale Semiconductor, Inc. All Rights Reserved.
+ */
+
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+
+ * 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, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+/*!
+ * @file mxc_ldb.c
+ *
+ * @brief This file contains the LDB driver device interface and fops
+ * functions.
+ */
+
+#include <linux/types.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/err.h>
+#include <linux/clk.h>
+#include <linux/console.h>
+#include <linux/io.h>
+#include <linux/ipu.h>
+#include <linux/ldb.h>
+#include <linux/mxcfb.h>
+#include <linux/regulator/consumer.h>
+#include <linux/spinlock.h>
+#include <linux/uaccess.h>
+#include <mach/hardware.h>
+
+#define LDB_BGREF_RMODE_MASK 0x00008000
+#define LDB_BGREF_RMODE_INT 0x00008000
+#define LDB_BGREF_RMODE_EXT 0x0
+
+#define LDB_DI1_VS_POL_MASK 0x00000400
+#define LDB_DI1_VS_POL_ACT_LOW 0x00000400
+#define LDB_DI1_VS_POL_ACT_HIGH 0x0
+#define LDB_DI0_VS_POL_MASK 0x00000200
+#define LDB_DI0_VS_POL_ACT_LOW 0x00000200
+#define LDB_DI0_VS_POL_ACT_HIGH 0x0
+
+#define LDB_BIT_MAP_CH1_MASK 0x00000100
+#define LDB_BIT_MAP_CH1_JEIDA 0x00000100
+#define LDB_BIT_MAP_CH1_SPWG 0x0
+#define LDB_BIT_MAP_CH0_MASK 0x00000040
+#define LDB_BIT_MAP_CH0_JEIDA 0x00000040
+#define LDB_BIT_MAP_CH0_SPWG 0x0
+
+#define LDB_DATA_WIDTH_CH1_MASK 0x00000080
+#define LDB_DATA_WIDTH_CH1_24 0x00000080
+#define LDB_DATA_WIDTH_CH1_18 0x0
+#define LDB_DATA_WIDTH_CH0_MASK 0x00000020
+#define LDB_DATA_WIDTH_CH0_24 0x00000020
+#define LDB_DATA_WIDTH_CH0_18 0x0
+
+#define LDB_CH1_MODE_MASK 0x0000000C
+#define LDB_CH1_MODE_EN_TO_DI1 0x0000000C
+#define LDB_CH1_MODE_EN_TO_DI0 0x00000004
+#define LDB_CH1_MODE_DISABLE 0x0
+#define LDB_CH0_MODE_MASK 0x00000003
+#define LDB_CH0_MODE_EN_TO_DI1 0x00000003
+#define LDB_CH0_MODE_EN_TO_DI0 0x00000001
+#define LDB_CH0_MODE_DISABLE 0x0
+
+#define LDB_SPLIT_MODE_EN 0x00000010
+
+enum ldb_chan_mode_opt {
+ LDB_SIN_DI0 = 0,
+ LDB_SIN_DI1 = 1,
+ LDB_SEP = 2,
+ LDB_DUL_DI0 = 3,
+ LDB_DUL_DI1 = 4,
+ LDB_SPL_DI0 = 5,
+ LDB_SPL_DI1 = 6,
+};
+
+static struct ldb_data {
+ struct fb_info *fbi[2];
+ bool ch_working[2];
+ uint32_t chan_mode_opt;
+ uint32_t chan_bit_map[2];
+ uint32_t bgref_rmode;
+ uint32_t base_addr;
+ uint32_t *control_reg;
+ struct clk *ldb_di_clk[2];
+ struct regulator *lvds_bg_reg;
+ struct list_head modelist;
+} ldb;
+
+static struct device *g_ldb_dev;
+static u32 *ldb_reg;
+static bool enabled[2];
+static int g_chan_mode_opt;
+static int g_chan_bit_map[2];
+static bool g_enable_ldb;
+static bool g_boot_cmd;
+
+DEFINE_SPINLOCK(ldb_lock);
+
+struct fb_videomode mxcfb_ldb_modedb[] = {
+ {
+ "1080P60", 60, 1920, 1080, 7692,
+ 100, 40,
+ 30, 3,
+ 10, 2,
+ FB_SYNC_EXT,
+ FB_VMODE_NONINTERLACED,
+ 0,},
+ {
+ "XGA", 60, 1024, 768, 15385,
+ 220, 40,
+ 21, 7,
+ 60, 10,
+ FB_SYNC_EXT,
+ FB_VMODE_NONINTERLACED,
+ 0,},
+};
+int mxcfb_ldb_modedb_sz = ARRAY_SIZE(mxcfb_ldb_modedb);
+
+static int bits_per_pixel(int pixel_fmt)
+{
+ switch (pixel_fmt) {
+ case IPU_PIX_FMT_BGR24:
+ case IPU_PIX_FMT_RGB24:
+ return 24;
+ break;
+ case IPU_PIX_FMT_BGR666:
+ case IPU_PIX_FMT_RGB666:
+ case IPU_PIX_FMT_LVDS666:
+ return 18;
+ break;
+ default:
+ break;
+ }
+ return 0;
+}
+
+static int valid_mode(int pixel_fmt)
+{
+ return ((pixel_fmt == IPU_PIX_FMT_RGB24) ||
+ (pixel_fmt == IPU_PIX_FMT_BGR24) ||
+ (pixel_fmt == IPU_PIX_FMT_LVDS666) ||
+ (pixel_fmt == IPU_PIX_FMT_RGB666) ||
+ (pixel_fmt == IPU_PIX_FMT_BGR666));
+}
+
+static void ldb_disable(int ipu_di)
+{
+ uint32_t reg;
+ int i = 0;
+
+ spin_lock(&ldb_lock);
+
+ switch (ldb.chan_mode_opt) {
+ case LDB_SIN_DI0:
+ if (ipu_di != 0 || !ldb.ch_working[0] || !enabled[0]) {
+ spin_unlock(&ldb_lock);
+ return;
+ }
+
+ reg = __raw_readl(ldb.control_reg);
+ __raw_writel((reg & ~LDB_CH0_MODE_MASK) |
+ LDB_CH0_MODE_DISABLE,
+ ldb.control_reg);
+
+ ldb.ldb_di_clk[0] = clk_get(NULL, "ldb_di0_clk");
+ clk_disable(ldb.ldb_di_clk[0]);
+ clk_put(ldb.ldb_di_clk[0]);
+
+ ldb.ch_working[0] = false;
+ enabled[0] = false;
+ break;
+ case LDB_SIN_DI1:
+ if (ipu_di != 1 || !ldb.ch_working[1] || !enabled[1]) {
+ spin_unlock(&ldb_lock);
+ return;
+ }
+
+ reg = __raw_readl(ldb.control_reg);
+ __raw_writel((reg & ~LDB_CH1_MODE_MASK) |
+ LDB_CH1_MODE_DISABLE,
+ ldb.control_reg);
+
+ ldb.ldb_di_clk[1] = clk_get(NULL, "ldb_di1_clk");
+ clk_disable(ldb.ldb_di_clk[1]);
+ clk_put(ldb.ldb_di_clk[1]);
+
+ ldb.ch_working[1] = false;
+ enabled[1] = false;
+ break;
+ case LDB_SPL_DI0:
+ case LDB_DUL_DI0:
+ if (ipu_di != 0 || !enabled[0]) {
+ spin_unlock(&ldb_lock);
+ return;
+ }
+
+ for (i = 0; i < 2; i++) {
+ if (ldb.ch_working[i]) {
+ reg = __raw_readl(ldb.control_reg);
+ if (i == 0)
+ __raw_writel((reg & ~LDB_CH0_MODE_MASK) |
+ LDB_CH0_MODE_DISABLE,
+ ldb.control_reg);
+ else
+ __raw_writel((reg & ~LDB_CH0_MODE_MASK) |
+ LDB_CH1_MODE_DISABLE,
+ ldb.control_reg);
+
+ if (ldb.chan_mode_opt == LDB_SPL_DI0) {
+ reg = __raw_readl(ldb.control_reg);
+ __raw_writel(reg & ~LDB_SPLIT_MODE_EN,
+ ldb.control_reg);
+ }
+
+ ldb.ldb_di_clk[i] = clk_get(NULL, i ?
+ "ldb_di1_clk" :
+ "ldb_di0_clk");
+ clk_disable(ldb.ldb_di_clk[i]);
+ clk_put(ldb.ldb_di_clk[i]);
+
+ ldb.ch_working[i] = false;
+ }
+ }
+ enabled[0] = false;
+ break;
+ case LDB_SPL_DI1:
+ case LDB_DUL_DI1:
+ if (ipu_di != 1 || !enabled[1]) {
+ spin_unlock(&ldb_lock);
+ return;
+ }
+
+ for (i = 0; i < 2; i++) {
+ if (ldb.ch_working[i]) {
+ reg = __raw_readl(ldb.control_reg);
+ if (i == 0)
+ __raw_writel((reg & ~LDB_CH0_MODE_MASK) |
+ LDB_CH0_MODE_DISABLE,
+ ldb.control_reg);
+ else
+ __raw_writel((reg & ~LDB_CH0_MODE_MASK) |
+ LDB_CH1_MODE_DISABLE,
+ ldb.control_reg);
+
+ if (ldb.chan_mode_opt == LDB_SPL_DI1) {
+ reg = __raw_readl(ldb.control_reg);
+ __raw_writel(reg & ~LDB_SPLIT_MODE_EN,
+ ldb.control_reg);
+ }
+
+ ldb.ldb_di_clk[i] = clk_get(NULL, i ?
+ "ldb_di1_clk" :
+ "ldb_di0_clk");
+ clk_disable(ldb.ldb_di_clk[i]);
+ clk_put(ldb.ldb_di_clk[i]);
+
+ ldb.ch_working[i] = false;
+ }
+ }
+ enabled[1] = false;
+ break;
+ case LDB_SEP:
+ if (ldb.ch_working[ipu_di] && enabled[ipu_di]) {
+ reg = __raw_readl(ldb.control_reg);
+ if (ipu_di == 0)
+ __raw_writel((reg & ~LDB_CH0_MODE_MASK) |
+ LDB_CH0_MODE_DISABLE,
+ ldb.control_reg);
+ else
+ __raw_writel((reg & ~LDB_CH1_MODE_MASK) |
+ LDB_CH1_MODE_DISABLE,
+ ldb.control_reg);
+
+ ldb.ldb_di_clk[ipu_di] = clk_get(NULL, ipu_di ?
+ "ldb_di1_clk" :
+ "ldb_di0_clk");
+ clk_disable(ldb.ldb_di_clk[ipu_di]);
+ clk_put(ldb.ldb_di_clk[ipu_di]);
+
+ ldb.ch_working[ipu_di] = false;
+ enabled[ipu_di] = false;
+ }
+ break;
+ default:
+ break;
+ }
+
+ spin_unlock(&ldb_lock);
+ return;
+}
+
+static void ldb_enable(int ipu_di)
+{
+ uint32_t reg;
+
+ spin_lock(&ldb_lock);
+
+ reg = __raw_readl(ldb.control_reg);
+ switch (ldb.chan_mode_opt) {
+ case LDB_SIN_DI0:
+ if (ldb.ch_working[0] || ipu_di != 0 || enabled[0]) {
+ spin_unlock(&ldb_lock);
+ return;
+ }
+
+ ldb.ldb_di_clk[0] = clk_get(NULL, "ldb_di0_clk");
+ clk_enable(ldb.ldb_di_clk[0]);
+ clk_put(ldb.ldb_di_clk[0]);
+ __raw_writel((reg & ~LDB_CH0_MODE_MASK) |
+ LDB_CH0_MODE_EN_TO_DI0, ldb.control_reg);
+ ldb.ch_working[0] = true;
+ enabled[0] = true;
+ break;
+ case LDB_SIN_DI1:
+ if (ldb.ch_working[1] || ipu_di != 1 || enabled[1]) {
+ spin_unlock(&ldb_lock);
+ return;
+ }
+
+ ldb.ldb_di_clk[1] = clk_get(NULL, "ldb_di1_clk");
+ clk_enable(ldb.ldb_di_clk[1]);
+ clk_put(ldb.ldb_di_clk[1]);
+ __raw_writel((reg & ~LDB_CH1_MODE_MASK) |
+ LDB_CH1_MODE_EN_TO_DI1, ldb.control_reg);
+ ldb.ch_working[1] = true;
+ enabled[1] = true;
+ break;
+ case LDB_SEP:
+ if (ldb.ch_working[ipu_di] || enabled[ipu_di]) {
+ spin_unlock(&ldb_lock);
+ return;
+ }
+
+ if (ipu_di == 0) {
+ ldb.ldb_di_clk[0] = clk_get(NULL, "ldb_di0_clk");
+ clk_enable(ldb.ldb_di_clk[0]);
+ clk_put(ldb.ldb_di_clk[0]);
+ __raw_writel((reg & ~LDB_CH0_MODE_MASK) |
+ LDB_CH0_MODE_EN_TO_DI0,
+ ldb.control_reg);
+ ldb.ch_working[0] = true;
+ } else {
+ ldb.ldb_di_clk[1] = clk_get(NULL, "ldb_di1_clk");
+ clk_enable(ldb.ldb_di_clk[1]);
+ clk_put(ldb.ldb_di_clk[1]);
+ __raw_writel((reg & ~LDB_CH1_MODE_MASK) |
+ LDB_CH1_MODE_EN_TO_DI1,
+ ldb.control_reg);
+ ldb.ch_working[1] = true;
+ }
+ enabled[ipu_di] = true;
+ break;
+ case LDB_DUL_DI0:
+ case LDB_SPL_DI0:
+ if (ipu_di != 0 || enabled[0])
+ return;
+ else
+ goto proc;
+ case LDB_DUL_DI1:
+ case LDB_SPL_DI1:
+ if (ipu_di != 1 || enabled[1])
+ return;
+proc:
+ if (ldb.ch_working[0] || ldb.ch_working[1]) {
+ spin_unlock(&ldb_lock);
+ return;
+ }
+
+ ldb.ldb_di_clk[0] = clk_get(NULL, "ldb_di0_clk");
+ ldb.ldb_di_clk[1] = clk_get(NULL, "ldb_di1_clk");
+ clk_enable(ldb.ldb_di_clk[0]);
+ clk_enable(ldb.ldb_di_clk[1]);
+ clk_put(ldb.ldb_di_clk[0]);
+ clk_put(ldb.ldb_di_clk[1]);
+
+ if (ldb.chan_mode_opt == LDB_DUL_DI0 ||
+ ldb.chan_mode_opt == LDB_SPL_DI0) {
+ __raw_writel((reg & ~LDB_CH0_MODE_MASK) |
+ LDB_CH0_MODE_EN_TO_DI0,
+ ldb.control_reg);
+ reg = __raw_readl(ldb.control_reg);
+ __raw_writel((reg & ~LDB_CH1_MODE_MASK) |
+ LDB_CH1_MODE_EN_TO_DI0,
+ ldb.control_reg);
+ } else if (ldb.chan_mode_opt == LDB_DUL_DI1 ||
+ ldb.chan_mode_opt == LDB_SPL_DI1) {
+ __raw_writel((reg & ~LDB_CH0_MODE_MASK) |
+ LDB_CH0_MODE_EN_TO_DI1,
+ ldb.control_reg);
+ reg = __raw_readl(ldb.control_reg);
+ __raw_writel((reg & ~LDB_CH1_MODE_MASK) |
+ LDB_CH1_MODE_EN_TO_DI1,
+ ldb.control_reg);
+ }
+ if (ldb.chan_mode_opt == LDB_SPL_DI0 ||
+ ldb.chan_mode_opt == LDB_SPL_DI1) {
+ reg = __raw_readl(ldb.control_reg);
+ __raw_writel(reg | LDB_SPLIT_MODE_EN,
+ ldb.control_reg);
+ }
+ ldb.ch_working[0] = true;
+ ldb.ch_working[1] = true;
+ enabled[ipu_di] = true;
+ break;
+ default:
+ break;
+ }
+ spin_unlock(&ldb_lock);
+ return;
+}
+
+int ldb_fb_event(struct notifier_block *nb, unsigned long val, void *v)
+{
+ struct fb_event *event = v;
+ struct fb_info *fbi = event->info;
+ mm_segment_t old_fs;
+ int ipu_di = 0;
+
+ switch (val) {
+ case FB_EVENT_BLANK:
+ if (ldb.fbi[0] != fbi && ldb.fbi[1] != fbi)
+ return 0;
+
+ if (fbi->fbops->fb_ioctl) {
+ old_fs = get_fs();
+ set_fs(KERNEL_DS);
+ fbi->fbops->fb_ioctl(fbi,
+ MXCFB_GET_FB_IPU_DI,
+ (unsigned long)&ipu_di);
+ set_fs(old_fs);
+ } else
+ return 0;
+
+ if (*((int *)event->data) == FB_BLANK_UNBLANK)
+ ldb_enable(ipu_di);
+ else
+ ldb_disable(ipu_di);
+ break;
+ default:
+ break;
+ }
+ return 0;
+}
+
+static struct notifier_block nb = {
+ .notifier_call = ldb_fb_event,
+};
+
+static int mxc_ldb_ioctl(struct inode *inode, struct file *file,
+ unsigned int cmd, unsigned long arg)
+{
+ int ret = 0;
+ uint32_t reg;
+
+ switch (cmd) {
+ case LDB_BGREF_RMODE:
+ {
+ ldb_bgref_parm parm;
+
+ if (copy_from_user(&parm, (ldb_bgref_parm *) arg,
+ sizeof(ldb_bgref_parm)))
+ return -EFAULT;
+
+ spin_lock(&ldb_lock);
+ reg = __raw_readl(ldb.control_reg);
+ if (parm.bgref_mode == LDB_EXT_REF)
+ __raw_writel((reg & ~LDB_BGREF_RMODE_MASK) |
+ LDB_BGREF_RMODE_EXT, ldb.control_reg);
+ else if (parm.bgref_mode == LDB_INT_REF)
+ __raw_writel((reg & ~LDB_BGREF_RMODE_MASK) |
+ LDB_BGREF_RMODE_INT, ldb.control_reg);
+ spin_unlock(&ldb_lock);
+ break;
+ }
+ case LDB_VSYNC_POL:
+ {
+ ldb_vsync_parm parm;
+
+ if (copy_from_user(&parm, (ldb_vsync_parm *) arg,
+ sizeof(ldb_vsync_parm)))
+ return -EFAULT;
+
+ spin_lock(&ldb_lock);
+ reg = __raw_readl(ldb.control_reg);
+ if (parm.vsync_mode == LDB_VS_ACT_H) {
+ if (parm.di == 0)
+ __raw_writel((reg &
+ ~LDB_DI0_VS_POL_MASK) |
+ LDB_DI0_VS_POL_ACT_HIGH,
+ ldb.control_reg);
+ else
+ __raw_writel((reg &
+ ~LDB_DI1_VS_POL_MASK) |
+ LDB_DI1_VS_POL_ACT_HIGH,
+ ldb.control_reg);
+ } else if (parm.vsync_mode == LDB_VS_ACT_L) {
+ if (parm.di == 0)
+ __raw_writel((reg &
+ ~LDB_DI0_VS_POL_MASK) |
+ LDB_DI0_VS_POL_ACT_LOW,
+ ldb.control_reg);
+ else
+ __raw_writel((reg &
+ ~LDB_DI1_VS_POL_MASK) |
+ LDB_DI1_VS_POL_ACT_LOW,
+ ldb.control_reg);
+
+ }
+ spin_unlock(&ldb_lock);
+ break;
+ }
+ case LDB_BIT_MAP:
+ {
+ ldb_bitmap_parm parm;
+
+ if (copy_from_user(&parm, (ldb_bitmap_parm *) arg,
+ sizeof(ldb_bitmap_parm)))
+ return -EFAULT;
+
+ spin_lock(&ldb_lock);
+ reg = __raw_readl(ldb.control_reg);
+ if (parm.bitmap_mode == LDB_BIT_MAP_SPWG) {
+ if (parm.channel == 0)
+ __raw_writel((reg & ~LDB_BIT_MAP_CH0_MASK) |
+ LDB_BIT_MAP_CH0_SPWG,
+ ldb.control_reg);
+ else
+ __raw_writel((reg & ~LDB_BIT_MAP_CH0_MASK) |
+ LDB_BIT_MAP_CH1_SPWG,
+ ldb.control_reg);
+ } else if (parm.bitmap_mode == LDB_BIT_MAP_JEIDA) {
+ if (parm.channel == 0)
+ __raw_writel((reg & ~LDB_BIT_MAP_CH0_MASK) |
+ LDB_BIT_MAP_CH0_JEIDA,
+ ldb.control_reg);
+ else
+ __raw_writel((reg & ~LDB_BIT_MAP_CH0_MASK) |
+ LDB_BIT_MAP_CH1_JEIDA,
+ ldb.control_reg);
+ }
+ spin_unlock(&ldb_lock);
+ break;
+ }
+ case LDB_DATA_WIDTH:
+ {
+ ldb_data_width_parm parm;
+
+ if (copy_from_user(&parm, (ldb_data_width_parm *) arg,
+ sizeof(ldb_data_width_parm)))
+ return -EFAULT;
+
+ spin_lock(&ldb_lock);
+ reg = __raw_readl(ldb.control_reg);
+ if (parm.data_width == 24) {
+ if (parm.channel == 0)
+ __raw_writel((reg & ~LDB_DATA_WIDTH_CH0_MASK) |
+ LDB_DATA_WIDTH_CH0_24,
+ ldb.control_reg);
+ else
+ __raw_writel((reg & ~LDB_DATA_WIDTH_CH0_MASK) |
+ LDB_DATA_WIDTH_CH1_24,
+ ldb.control_reg);
+ } else if (parm.data_width == 18) {
+ if (parm.channel == 0)
+ __raw_writel((reg & ~LDB_DATA_WIDTH_CH0_MASK) |
+ LDB_DATA_WIDTH_CH0_18,
+ ldb.control_reg);
+ else
+ __raw_writel((reg & ~LDB_DATA_WIDTH_CH0_MASK) |
+ LDB_DATA_WIDTH_CH1_18,
+ ldb.control_reg);
+ }
+ spin_unlock(&ldb_lock);
+ break;
+ }
+ case LDB_CHAN_MODE:
+ {
+ ldb_chan_mode_parm parm;
+ struct clk *pll4_clk;
+ unsigned long pll4_rate = 0;
+
+ if (copy_from_user(&parm, (ldb_chan_mode_parm *) arg,
+ sizeof(ldb_chan_mode_parm)))
+ return -EFAULT;
+
+ spin_lock(&ldb_lock);
+
+ /* TODO:Set the correct pll4 rate for all situations */
+ pll4_clk = clk_get(NULL, "pll4");
+ pll4_rate = clk_get_rate(pll4_clk);
+ pll4_rate = 455000000;
+ clk_set_rate(pll4_clk, pll4_rate);
+ clk_put(pll4_clk);
+
+ reg = __raw_readl(ldb.control_reg);
+ switch (parm.channel_mode) {
+ case LDB_CHAN_MODE_SIN:
+ if (parm.di == 0) {
+ ldb.chan_mode_opt = LDB_SIN_DI0;
+
+ ldb.ldb_di_clk[0] = clk_get(NULL,
+ "ldb_di0_clk");
+ clk_set_rate(ldb.ldb_di_clk[0], pll4_rate/7);
+ clk_put(ldb.ldb_di_clk[0]);
+
+ __raw_writel((reg & ~LDB_CH0_MODE_MASK) |
+ LDB_CH0_MODE_EN_TO_DI0,
+ ldb.control_reg);
+ } else {
+ ldb.chan_mode_opt = LDB_SIN_DI1;
+
+ ldb.ldb_di_clk[1] = clk_get(NULL,
+ "ldb_di1_clk");
+ clk_set_rate(ldb.ldb_di_clk[1], pll4_rate/7);
+ clk_put(ldb.ldb_di_clk[1]);
+
+ __raw_writel((reg & ~LDB_CH1_MODE_MASK) |
+ LDB_CH1_MODE_EN_TO_DI1,
+ ldb.control_reg);
+ }
+ break;
+ case LDB_CHAN_MODE_SEP:
+ ldb.chan_mode_opt = LDB_SEP;
+
+ ldb.ldb_di_clk[0] = clk_get(NULL, "ldb_di0_clk");
+ clk_set_rate(ldb.ldb_di_clk[0], pll4_rate/7);
+ clk_put(ldb.ldb_di_clk[0]);
+ ldb.ldb_di_clk[1] = clk_get(NULL, "ldb_di1_clk");
+ clk_set_rate(ldb.ldb_di_clk[1], pll4_rate/7);
+ clk_put(ldb.ldb_di_clk[1]);
+
+ __raw_writel((reg & ~(LDB_CH0_MODE_MASK |
+ LDB_CH1_MODE_MASK)) |
+ LDB_CH0_MODE_EN_TO_DI0 |
+ LDB_CH1_MODE_EN_TO_DI1,
+ ldb.control_reg);
+ break;
+ case LDB_CHAN_MODE_DUL:
+ case LDB_CHAN_MODE_SPL:
+ ldb.ldb_di_clk[0] = clk_get(NULL, "ldb_di0_clk");
+ ldb.ldb_di_clk[1] = clk_get(NULL, "ldb_di1_clk");
+ if (parm.di == 0) {
+ if (parm.channel_mode == LDB_CHAN_MODE_DUL) {
+ ldb.chan_mode_opt = LDB_DUL_DI0;
+ clk_set_rate(ldb.ldb_di_clk[0],
+ pll4_rate/7);
+ } else {
+ ldb.chan_mode_opt = LDB_SPL_DI0;
+ clk_set_rate(ldb.ldb_di_clk[0],
+ 2*pll4_rate/7);
+ clk_set_rate(ldb.ldb_di_clk[1],
+ 2*pll4_rate/7);
+ reg = __raw_readl(ldb.control_reg);
+ __raw_writel(reg | LDB_SPLIT_MODE_EN,
+ ldb.control_reg);
+ }
+
+ reg = __raw_readl(ldb.control_reg);
+ __raw_writel((reg & ~(LDB_CH0_MODE_MASK |
+ LDB_CH1_MODE_MASK)) |
+ LDB_CH0_MODE_EN_TO_DI0 |
+ LDB_CH1_MODE_EN_TO_DI0,
+ ldb.control_reg);
+ } else {
+ if (parm.channel_mode == LDB_CHAN_MODE_DUL) {
+ ldb.chan_mode_opt = LDB_DUL_DI1;
+ clk_set_rate(ldb.ldb_di_clk[1],
+ pll4_rate/7);
+ } else {
+ ldb.chan_mode_opt = LDB_SPL_DI1;
+ clk_set_rate(ldb.ldb_di_clk[0],
+ 2*pll4_rate/7);
+ clk_set_rate(ldb.ldb_di_clk[1],
+ 2*pll4_rate/7);
+ reg = __raw_readl(ldb.control_reg);
+ __raw_writel(reg | LDB_SPLIT_MODE_EN,
+ ldb.control_reg);
+ }
+
+ reg = __raw_readl(ldb.control_reg);
+ __raw_writel((reg & ~(LDB_CH0_MODE_MASK |
+ LDB_CH1_MODE_MASK)) |
+ LDB_CH0_MODE_EN_TO_DI1 |
+ LDB_CH1_MODE_EN_TO_DI1,
+ ldb.control_reg);
+ }
+ clk_put(ldb.ldb_di_clk[0]);
+ clk_put(ldb.ldb_di_clk[1]);
+ break;
+ default:
+ ret = -EINVAL;
+ break;
+ }
+ spin_unlock(&ldb_lock);
+ break;
+ }
+ case LDB_ENABLE:
+ {
+ int ipu_di;
+
+ if (copy_from_user(&ipu_di, (int *) arg, sizeof(int)))
+ return -EFAULT;
+
+ ldb_enable(ipu_di);
+ break;
+ }
+ case LDB_DISABLE:
+ {
+ int ipu_di;
+
+ if (copy_from_user(&ipu_di, (int *) arg, sizeof(int)))
+ return -EFAULT;
+
+ ldb_disable(ipu_di);
+ break;
+ }
+ default:
+ ret = -EINVAL;
+ break;
+ }
+
+ return ret;
+}
+
+static int mxc_ldb_open(struct inode *inode, struct file *file)
+{
+ return 0;
+}
+
+static int mxc_ldb_release(struct inode *inode, struct file *file)
+{
+ return 0;
+}
+
+static int mxc_ldb_mmap(struct file *file, struct vm_area_struct *vma)
+{
+ return 0;
+}
+
+static const struct file_operations mxc_ldb_fops = {
+ .owner = THIS_MODULE,
+ .open = mxc_ldb_open,
+ .mmap = mxc_ldb_mmap,
+ .release = mxc_ldb_release,
+ .ioctl = mxc_ldb_ioctl
+};
+
+/*!
+ * This function is called by the driver framework to initialize the LDB
+ * device.
+ *
+ * @param dev The device structure for the LDB passed in by the
+ * driver framework.
+ *
+ * @return Returns 0 on success or negative error code on error
+ */
+static int ldb_probe(struct platform_device *pdev)
+{
+ int ret = 0, i, ipu_di, ipu_di_pix_fmt[2];
+ bool primary = false, find_1080p = false;
+ struct resource *res;
+ struct ldb_platform_data *plat_data = pdev->dev.platform_data;
+ mm_segment_t old_fs;
+ struct clk *ldb_clk_parent;
+ unsigned long ldb_clk_prate = 455000000;
+ struct fb_var_screeninfo *var[2];
+ uint32_t reg;
+ struct device *temp;
+ int mxc_ldb_major;
+ const struct fb_videomode *mode;
+ struct class *mxc_ldb_class;
+
+ if (g_enable_ldb == false)
+ return -ENODEV;
+
+ spin_lock_init(&ldb_lock);
+
+ g_ldb_dev = &pdev->dev;
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (IS_ERR(res))
+ return -ENODEV;
+
+ memset(&ldb, 0, sizeof(struct ldb_data));
+ enabled[0] = enabled[1] = false;
+ var[0] = var[1] = NULL;
+ if (g_boot_cmd) {
+ ldb.chan_mode_opt = g_chan_mode_opt;
+ ldb.chan_bit_map[0] = g_chan_bit_map[0];
+ ldb.chan_bit_map[1] = g_chan_bit_map[1];
+ }
+
+ ldb.base_addr = res->start;
+ ldb_reg = ioremap(ldb.base_addr, res->end - res->start + 1);
+ ldb.control_reg = ldb_reg + 2;
+
+ INIT_LIST_HEAD(&ldb.modelist);
+ for (i = 0; i < mxcfb_ldb_modedb_sz; i++)
+ fb_add_videomode(&mxcfb_ldb_modedb[i], &ldb.modelist);
+
+ for (i = 0; i < num_registered_fb; i++) {
+ if ((registered_fb[i]->var.sync & FB_SYNC_EXT) &&
+ (registered_fb[i]->var.vmode == FB_VMODE_NONINTERLACED)) {
+ ldb.fbi[i] = registered_fb[i];
+
+ mode = fb_match_mode(&ldb.fbi[i]->var, &ldb.modelist);
+ if (mode) {
+ dev_dbg(g_ldb_dev, "fb mode found\n");
+ fb_videomode_to_var(&ldb.fbi[i]->var, mode);
+ } else {
+ dev_warn(g_ldb_dev,
+ "can't find video mode\n");
+ goto err0;
+ }
+ /*
+ * Default ldb mode:
+ * 1080p: DI0 split, SPWG
+ * others: single, SPWG
+ */
+ if (g_boot_cmd == false) {
+ ldb.chan_bit_map[0] = LDB_BIT_MAP_SPWG;
+ if (fb_mode_is_equal(mode, &mxcfb_ldb_modedb[0])) {
+ ldb.chan_mode_opt = LDB_SPL_DI0;
+ ldb.chan_bit_map[0] = LDB_BIT_MAP_SPWG;
+ ldb.chan_bit_map[1] = LDB_BIT_MAP_SPWG;
+ find_1080p = true;
+ dev_warn(g_ldb_dev, "default split mode\n");
+ } else if (!find_1080p) {
+ if (strcmp(ldb.fbi[i]->fix.id,
+ "DISP3 BG") == 0) {
+ ldb.chan_mode_opt = LDB_SIN_DI0;
+ ldb.chan_bit_map[0] = LDB_BIT_MAP_SPWG;
+ dev_warn(g_ldb_dev,
+ "default di0 single mode\n");
+ } else if (strcmp(ldb.fbi[i]->fix.id,
+ "DISP3 BG - DI1") == 0) {
+ ldb.chan_mode_opt = LDB_SIN_DI1;
+ ldb.chan_bit_map[1] = LDB_BIT_MAP_SPWG;
+ dev_warn(g_ldb_dev,
+ "default di1 single mode\n");
+ }
+ }
+ }
+
+ acquire_console_sem();
+ fb_blank(ldb.fbi[i], FB_BLANK_POWERDOWN);
+ release_console_sem();
+
+ if (i == 0)
+ primary = true;
+
+ if (ldb.fbi[1] != NULL)
+ break;
+ }
+ }
+
+ /*
+ * We cannot support two LVDS panel with different pixel clock rates
+ * except that one's pixel clock rate is two times of the others'.
+ */
+ if (ldb.fbi[1] && ldb.fbi[0] != NULL) {
+ if (ldb.fbi[0]->var.pixclock != ldb.fbi[1]->var.pixclock &&
+ ldb.fbi[0]->var.pixclock != 2 * ldb.fbi[1]->var.pixclock &&
+ ldb.fbi[1]->var.pixclock != 2 * ldb.fbi[0]->var.pixclock)
+ return -EINVAL;
+ }
+
+ ldb.bgref_rmode = plat_data->ext_ref;
+ ldb.lvds_bg_reg = regulator_get(&pdev->dev, plat_data->lvds_bg_reg);
+ if (!IS_ERR(ldb.lvds_bg_reg)) {
+ regulator_set_voltage(ldb.lvds_bg_reg, 2500000, 2500000);
+ regulator_enable(ldb.lvds_bg_reg);
+ }
+
+ for (i = 0; i < 2; i++) {
+ if (ldb.fbi[i] != NULL) {
+ if (strcmp(ldb.fbi[i]->fix.id, "DISP3 BG") == 0)
+ ipu_di = 0;
+ else if (strcmp(ldb.fbi[i]->fix.id, "DISP3 BG - DI1")
+ == 0)
+ ipu_di = 1;
+ else {
+ dev_err(g_ldb_dev, "Wrong framebuffer\n");
+ goto err0;
+ }
+
+ var[ipu_di] = &ldb.fbi[i]->var;
+ if (ldb.fbi[i]->fbops->fb_ioctl) {
+ old_fs = get_fs();
+ set_fs(KERNEL_DS);
+ ldb.fbi[i]->fbops->fb_ioctl(ldb.fbi[i],
+ MXCFB_GET_DIFMT,
+ (unsigned long)&(ipu_di_pix_fmt[ipu_di]));
+ set_fs(old_fs);
+ } else {
+ dev_err(g_ldb_dev, "Can't get framebuffer "
+ "information\n");
+ goto err0;
+ }
+
+ if (!valid_mode(ipu_di_pix_fmt[ipu_di])) {
+ dev_err(g_ldb_dev, "Unsupport pixel format "
+ "for ldb input\n");
+ goto err0;
+ }
+
+ reg = __raw_readl(ldb.control_reg);
+ if (var[ipu_di]->sync & FB_SYNC_VERT_HIGH_ACT) {
+ if (ipu_di == 0)
+ __raw_writel((reg &
+ ~LDB_DI0_VS_POL_MASK) |
+ LDB_DI0_VS_POL_ACT_HIGH,
+ ldb.control_reg);
+ else
+ __raw_writel((reg &
+ ~LDB_DI1_VS_POL_MASK) |
+ LDB_DI1_VS_POL_ACT_HIGH,
+ ldb.control_reg);
+ } else {
+ if (ipu_di == 0)
+ __raw_writel((reg &
+ ~LDB_DI0_VS_POL_MASK) |
+ LDB_DI0_VS_POL_ACT_LOW,
+ ldb.control_reg);
+ else
+ __raw_writel((reg &
+ ~LDB_DI1_VS_POL_MASK) |
+ LDB_DI1_VS_POL_ACT_LOW,
+ ldb.control_reg);
+ }
+
+ /* TODO:Set the correct pll4 rate for all situations */
+ if (ipu_di == 1) {
+ ldb.ldb_di_clk[1] =
+ clk_get(&pdev->dev, "ldb_di1_clk");
+ ldb_clk_parent =
+ clk_get_parent(ldb.ldb_di_clk[1]);
+ clk_set_rate(ldb_clk_parent, ldb_clk_prate);
+ clk_put(ldb.ldb_di_clk[1]);
+ } else {
+ ldb.ldb_di_clk[0] =
+ clk_get(&pdev->dev, "ldb_di0_clk");
+ ldb_clk_parent =
+ clk_get_parent(ldb.ldb_di_clk[0]);
+ clk_set_rate(ldb_clk_parent, ldb_clk_prate);
+ clk_put(ldb.ldb_di_clk[0]);
+ }
+ }
+ }
+
+ reg = __raw_readl(ldb.control_reg);
+ if (ldb.bgref_rmode == LDB_EXT_REF)
+ __raw_writel((reg & ~LDB_BGREF_RMODE_MASK) |
+ LDB_BGREF_RMODE_EXT, ldb.control_reg);
+ else
+ __raw_writel((reg & ~LDB_BGREF_RMODE_MASK) |
+ LDB_BGREF_RMODE_INT, ldb.control_reg);
+
+ switch (ldb.chan_mode_opt) {
+ case LDB_SIN_DI0:
+ if (var[0] == NULL) {
+ dev_err(g_ldb_dev, "Can't find framebuffer on DI0\n");
+ break;
+ }
+
+ reg = __raw_readl(ldb.control_reg);
+ if (bits_per_pixel(ipu_di_pix_fmt[0]) == 24)
+ __raw_writel((reg & ~LDB_DATA_WIDTH_CH0_MASK) |
+ LDB_DATA_WIDTH_CH0_24,
+ ldb.control_reg);
+ else if (bits_per_pixel(ipu_di_pix_fmt[0]) == 18)
+ __raw_writel((reg & ~LDB_DATA_WIDTH_CH0_MASK) |
+ LDB_DATA_WIDTH_CH0_18,
+ ldb.control_reg);
+
+ reg = __raw_readl(ldb.control_reg);
+ if (ldb.chan_bit_map[0] == LDB_BIT_MAP_SPWG)
+ __raw_writel((reg & ~LDB_BIT_MAP_CH0_MASK) |
+ LDB_BIT_MAP_CH0_SPWG,
+ ldb.control_reg);
+ else
+ __raw_writel((reg & ~LDB_BIT_MAP_CH0_MASK) |
+ LDB_BIT_MAP_CH0_JEIDA,
+ ldb.control_reg);
+
+ ldb.ldb_di_clk[0] = clk_get(NULL, "ldb_di0_clk");
+ clk_set_rate(ldb.ldb_di_clk[0], ldb_clk_prate/7);
+ clk_enable(ldb.ldb_di_clk[0]);
+ clk_put(ldb.ldb_di_clk[0]);
+
+ reg = __raw_readl(ldb.control_reg);
+ __raw_writel((reg & ~LDB_CH0_MODE_MASK) |
+ LDB_CH0_MODE_EN_TO_DI0, ldb.control_reg);
+ ldb.ch_working[0] = true;
+ break;
+ case LDB_SIN_DI1:
+ if (var[1] == NULL) {
+ dev_err(g_ldb_dev, "Can't find framebuffer on DI1\n");
+ break;
+ }
+
+ reg = __raw_readl(ldb.control_reg);
+ if (bits_per_pixel(ipu_di_pix_fmt[1]) == 24)
+ __raw_writel((reg & ~LDB_DATA_WIDTH_CH1_MASK) |
+ LDB_DATA_WIDTH_CH1_24,
+ ldb.control_reg);
+ else if (bits_per_pixel(ipu_di_pix_fmt[1]) == 18)
+ __raw_writel((reg & ~LDB_DATA_WIDTH_CH1_MASK) |
+ LDB_DATA_WIDTH_CH1_18,
+ ldb.control_reg);
+
+ reg = __raw_readl(ldb.control_reg);
+ if (ldb.chan_bit_map[1] == LDB_BIT_MAP_SPWG)
+ __raw_writel((reg & ~LDB_BIT_MAP_CH1_MASK) |
+ LDB_BIT_MAP_CH1_SPWG,
+ ldb.control_reg);
+ else
+ __raw_writel((reg & ~LDB_BIT_MAP_CH1_MASK) |
+ LDB_BIT_MAP_CH1_JEIDA,
+ ldb.control_reg);
+
+ ldb.ldb_di_clk[1] = clk_get(NULL, "ldb_di1_clk");
+ clk_set_rate(ldb.ldb_di_clk[1], ldb_clk_prate/7);
+ clk_enable(ldb.ldb_di_clk[1]);
+ clk_put(ldb.ldb_di_clk[1]);
+
+ reg = __raw_readl(ldb.control_reg);
+ __raw_writel((reg & ~LDB_CH1_MODE_MASK) |
+ LDB_CH1_MODE_EN_TO_DI1, ldb.control_reg);
+ ldb.ch_working[1] = true;
+ break;
+ case LDB_SEP:
+ if (var[0] == NULL || var[1] == NULL) {
+ dev_err(g_ldb_dev, "Can't find framebuffers on DI0/1\n");
+ break;
+ }
+
+ reg = __raw_readl(ldb.control_reg);
+ if (bits_per_pixel(ipu_di_pix_fmt[0]) == 24)
+ __raw_writel((reg & ~LDB_DATA_WIDTH_CH0_MASK) |
+ LDB_DATA_WIDTH_CH0_24,
+ ldb.control_reg);
+ else if (bits_per_pixel(ipu_di_pix_fmt[0]) == 18)
+ __raw_writel((reg & ~LDB_DATA_WIDTH_CH0_MASK) |
+ LDB_DATA_WIDTH_CH0_18,
+ ldb.control_reg);
+ reg = __raw_readl(ldb.control_reg);
+ if (bits_per_pixel(ipu_di_pix_fmt[1]) == 24)
+ __raw_writel((reg & ~LDB_DATA_WIDTH_CH1_MASK) |
+ LDB_DATA_WIDTH_CH1_24,
+ ldb.control_reg);
+ else if (bits_per_pixel(ipu_di_pix_fmt[1]) == 18)
+ __raw_writel((reg & ~LDB_DATA_WIDTH_CH1_MASK) |
+ LDB_DATA_WIDTH_CH1_18,
+ ldb.control_reg);
+
+ reg = __raw_readl(ldb.control_reg);
+ if (ldb.chan_bit_map[0] == LDB_BIT_MAP_SPWG)
+ __raw_writel((reg & ~LDB_BIT_MAP_CH0_MASK) |
+ LDB_BIT_MAP_CH0_SPWG,
+ ldb.control_reg);
+ else
+ __raw_writel((reg & ~LDB_BIT_MAP_CH0_MASK) |
+ LDB_BIT_MAP_CH0_JEIDA,
+ ldb.control_reg);
+ reg = __raw_readl(ldb.control_reg);
+ if (ldb.chan_bit_map[1] == LDB_BIT_MAP_SPWG)
+ __raw_writel((reg & ~LDB_BIT_MAP_CH1_MASK) |
+ LDB_BIT_MAP_CH1_SPWG,
+ ldb.control_reg);
+ else
+ __raw_writel((reg & ~LDB_BIT_MAP_CH1_MASK) |
+ LDB_BIT_MAP_CH1_JEIDA,
+ ldb.control_reg);
+
+ ldb.ldb_di_clk[0] = clk_get(NULL, "ldb_di0_clk");
+ clk_set_rate(ldb.ldb_di_clk[0], ldb_clk_prate/7);
+ clk_enable(ldb.ldb_di_clk[0]);
+ clk_put(ldb.ldb_di_clk[0]);
+ ldb.ldb_di_clk[1] = clk_get(NULL, "ldb_di1_clk");
+ clk_set_rate(ldb.ldb_di_clk[1], ldb_clk_prate/7);
+ clk_enable(ldb.ldb_di_clk[1]);
+ clk_put(ldb.ldb_di_clk[1]);
+
+ reg = __raw_readl(ldb.control_reg);
+ __raw_writel((reg & ~(LDB_CH0_MODE_MASK |
+ LDB_CH1_MODE_MASK)) |
+ LDB_CH0_MODE_EN_TO_DI0 |
+ LDB_CH1_MODE_EN_TO_DI1, ldb.control_reg);
+ ldb.ch_working[0] = true;
+ ldb.ch_working[1] = true;
+ break;
+ case LDB_DUL_DI0:
+ case LDB_SPL_DI0:
+ if (var[0] == NULL) {
+ dev_err(g_ldb_dev, "Can't find framebuffer on DI0\n");
+ break;
+ }
+
+ reg = __raw_readl(ldb.control_reg);
+ if (bits_per_pixel(ipu_di_pix_fmt[0]) == 24)
+ __raw_writel((reg & ~(LDB_DATA_WIDTH_CH0_MASK |
+ LDB_DATA_WIDTH_CH1_MASK)) |
+ LDB_DATA_WIDTH_CH0_24 |
+ LDB_DATA_WIDTH_CH1_24,
+ ldb.control_reg);
+ else if (bits_per_pixel(ipu_di_pix_fmt[0]) == 18)
+ __raw_writel((reg & ~(LDB_DATA_WIDTH_CH0_MASK |
+ LDB_DATA_WIDTH_CH1_MASK)) |
+ LDB_DATA_WIDTH_CH0_18 |
+ LDB_DATA_WIDTH_CH1_18,
+ ldb.control_reg);
+
+ reg = __raw_readl(ldb.control_reg);
+ if (ldb.chan_bit_map[0] == LDB_BIT_MAP_SPWG)
+ __raw_writel((reg & ~LDB_BIT_MAP_CH0_MASK) |
+ LDB_BIT_MAP_CH0_SPWG,
+ ldb.control_reg);
+ else
+ __raw_writel((reg & ~LDB_BIT_MAP_CH0_MASK) |
+ LDB_BIT_MAP_CH0_JEIDA,
+ ldb.control_reg);
+ reg = __raw_readl(ldb.control_reg);
+ if (ldb.chan_bit_map[1] == LDB_BIT_MAP_SPWG)
+ __raw_writel((reg & ~LDB_BIT_MAP_CH1_MASK) |
+ LDB_BIT_MAP_CH1_SPWG,
+ ldb.control_reg);
+ else
+ __raw_writel((reg & ~LDB_BIT_MAP_CH1_MASK) |
+ LDB_BIT_MAP_CH1_JEIDA,
+ ldb.control_reg);
+
+ reg = __raw_readl(ldb.control_reg);
+ if (ldb.chan_mode_opt == LDB_SPL_DI0)
+ __raw_writel(reg | LDB_SPLIT_MODE_EN,
+ ldb.control_reg);
+
+ ldb.ldb_di_clk[0] = clk_get(NULL, "ldb_di0_clk");
+ ldb.ldb_di_clk[1] = clk_get(NULL, "ldb_di1_clk");
+ if (ldb.chan_mode_opt == LDB_DUL_DI0) {
+ clk_set_rate(ldb.ldb_di_clk[0], ldb_clk_prate/7);
+ } else {
+ clk_set_rate(ldb.ldb_di_clk[0], 2*ldb_clk_prate/7);
+ clk_set_rate(ldb.ldb_di_clk[1], 2*ldb_clk_prate/7);
+ }
+ clk_enable(ldb.ldb_di_clk[0]);
+ clk_enable(ldb.ldb_di_clk[1]);
+ clk_put(ldb.ldb_di_clk[0]);
+ clk_put(ldb.ldb_di_clk[1]);
+
+ reg = __raw_readl(ldb.control_reg);
+ __raw_writel((reg & ~(LDB_CH0_MODE_MASK |
+ LDB_CH1_MODE_MASK)) |
+ LDB_CH0_MODE_EN_TO_DI0 |
+ LDB_CH1_MODE_EN_TO_DI0, ldb.control_reg);
+ ldb.ch_working[0] = true;
+ ldb.ch_working[1] = true;
+ break;
+ case LDB_DUL_DI1:
+ case LDB_SPL_DI1:
+ if (var[1] == NULL) {
+ dev_err(g_ldb_dev, "Can't find framebuffer on DI1\n");
+ break;
+ }
+
+ reg = __raw_readl(ldb.control_reg);
+ if (bits_per_pixel(ipu_di_pix_fmt[1]) == 24)
+ __raw_writel((reg & ~(LDB_DATA_WIDTH_CH0_MASK |
+ LDB_DATA_WIDTH_CH1_MASK)) |
+ LDB_DATA_WIDTH_CH0_24 |
+ LDB_DATA_WIDTH_CH1_24,
+ ldb.control_reg);
+ else if (bits_per_pixel(ipu_di_pix_fmt[1]) == 18)
+ __raw_writel((reg & ~(LDB_DATA_WIDTH_CH0_MASK |
+ LDB_DATA_WIDTH_CH1_MASK)) |
+ LDB_DATA_WIDTH_CH0_18 |
+ LDB_DATA_WIDTH_CH1_18,
+ ldb.control_reg);
+
+ reg = __raw_readl(ldb.control_reg);
+ if (ldb.chan_bit_map[0] == LDB_BIT_MAP_SPWG)
+ __raw_writel((reg & ~LDB_BIT_MAP_CH0_MASK) |
+ LDB_BIT_MAP_CH0_SPWG,
+ ldb.control_reg);
+ else
+ __raw_writel((reg & ~LDB_BIT_MAP_CH0_MASK) |
+ LDB_BIT_MAP_CH0_JEIDA,
+ ldb.control_reg);
+ reg = __raw_readl(ldb.control_reg);
+ if (ldb.chan_bit_map[1] == LDB_BIT_MAP_SPWG)
+ __raw_writel((reg & ~LDB_BIT_MAP_CH1_MASK) |
+ LDB_BIT_MAP_CH1_SPWG,
+ ldb.control_reg);
+ else
+ __raw_writel((reg & ~LDB_BIT_MAP_CH1_MASK) |
+ LDB_BIT_MAP_CH1_JEIDA,
+ ldb.control_reg);
+
+ reg = __raw_readl(ldb.control_reg);
+ if (ldb.chan_mode_opt == LDB_SPL_DI1)
+ __raw_writel(reg | LDB_SPLIT_MODE_EN,
+ ldb.control_reg);
+
+ ldb.ldb_di_clk[0] = clk_get(NULL, "ldb_di0_clk");
+ ldb.ldb_di_clk[1] = clk_get(NULL, "ldb_di1_clk");
+ if (ldb.chan_mode_opt == LDB_DUL_DI1) {
+ clk_set_rate(ldb.ldb_di_clk[1], ldb_clk_prate/7);
+ } else {
+ clk_set_rate(ldb.ldb_di_clk[0], 2*ldb_clk_prate/7);
+ clk_set_rate(ldb.ldb_di_clk[1], 2*ldb_clk_prate/7);
+ }
+ clk_enable(ldb.ldb_di_clk[0]);
+ clk_enable(ldb.ldb_di_clk[1]);
+ clk_put(ldb.ldb_di_clk[0]);
+ clk_put(ldb.ldb_di_clk[1]);
+
+ reg = __raw_readl(ldb.control_reg);
+ __raw_writel((reg & ~(LDB_CH0_MODE_MASK |
+ LDB_CH1_MODE_MASK)) |
+ LDB_CH0_MODE_EN_TO_DI1 |
+ LDB_CH1_MODE_EN_TO_DI1, ldb.control_reg);
+ ldb.ch_working[0] = true;
+ ldb.ch_working[1] = true;
+ break;
+ default:
+ break;
+ }
+
+ mxc_ldb_major = register_chrdev(0, "mxc_ldb", &mxc_ldb_fops);
+ if (mxc_ldb_major < 0) {
+ dev_err(g_ldb_dev, "Unable to register MXC LDB as a char "
+ "device\n");
+ ret = mxc_ldb_major;
+ goto err0;
+ }
+
+ mxc_ldb_class = class_create(THIS_MODULE, "mxc_ldb");
+ if (IS_ERR(mxc_ldb_class)) {
+ dev_err(g_ldb_dev, "Unable to create class for MXC LDB\n");
+ ret = PTR_ERR(mxc_ldb_class);
+ goto err1;
+ }
+
+ temp = device_create(mxc_ldb_class, NULL, MKDEV(mxc_ldb_major, 0),
+ NULL, "mxc_ldb");
+ if (IS_ERR(temp)) {
+ dev_err(g_ldb_dev, "Unable to create class device for "
+ "MXC LDB\n");
+ ret = PTR_ERR(temp);
+ goto err2;
+ }
+
+ ret = fb_register_client(&nb);
+ if (ret < 0)
+ goto err2;
+
+ if (primary && ldb.fbi[0] != NULL) {
+ acquire_console_sem();
+ fb_blank(ldb.fbi[0], FB_BLANK_UNBLANK);
+ release_console_sem();
+ fb_show_logo(ldb.fbi[0], 0);
+ }
+
+ return ret;
+err2:
+ class_destroy(mxc_ldb_class);
+err1:
+ unregister_chrdev(mxc_ldb_major, "mxc_ldb");
+err0:
+ iounmap(ldb_reg);
+ return ret;
+}
+
+static int ldb_remove(struct platform_device *pdev)
+{
+ int i;
+
+ __raw_writel(0, ldb.control_reg);
+
+ for (i = 0; i < 2; i++) {
+ if (ldb.ch_working[i]) {
+ ldb.ldb_di_clk[i] = clk_get(NULL,
+ i ? "ldb_di1_clk" : "ldb_di0_clk");
+ clk_disable(ldb.ldb_di_clk[i]);
+ clk_put(ldb.ldb_di_clk[i]);
+ ldb.ch_working[i] = false;
+ }
+ }
+
+ fb_unregister_client(&nb);
+ return 0;
+}
+
+static int ldb_suspend(struct platform_device *pdev, pm_message_t state)
+{
+ switch (ldb.chan_mode_opt) {
+ case LDB_SIN_DI0:
+ case LDB_DUL_DI0:
+ case LDB_SPL_DI0:
+ ldb_disable(0);
+ break;
+ case LDB_SIN_DI1:
+ case LDB_DUL_DI1:
+ case LDB_SPL_DI1:
+ ldb_disable(1);
+ break;
+ case LDB_SEP:
+ ldb_disable(0);
+ ldb_disable(1);
+ break;
+ default:
+ break;
+ }
+ return 0;
+}
+
+static int ldb_resume(struct platform_device *pdev)
+{
+ switch (ldb.chan_mode_opt) {
+ case LDB_SIN_DI0:
+ case LDB_DUL_DI0:
+ case LDB_SPL_DI0:
+ ldb_enable(0);
+ break;
+ case LDB_SIN_DI1:
+ case LDB_DUL_DI1:
+ case LDB_SPL_DI1:
+ ldb_enable(1);
+ break;
+ case LDB_SEP:
+ ldb_enable(0);
+ ldb_enable(1);
+ break;
+ default:
+ break;
+ }
+ return 0;
+}
+
+static struct platform_driver mxcldb_driver = {
+ .driver = {
+ .name = "mxc_ldb",
+ },
+ .probe = ldb_probe,
+ .remove = ldb_remove,
+ .suspend = ldb_suspend,
+ .resume = ldb_resume,
+};
+
+/*
+ * Parse user specified options (`lvds=')
+ * example:
+ * lvds=single(separate, dual or split),(di=0 or di=1),
+ * ch0_map=SPWG or JEIDA,ch1_map=SPWG or JEIDA
+ *
+ */
+static int __init ldb_setup(char *options)
+{
+ g_enable_ldb = true;
+
+ if (!strlen(options))
+ return 1;
+ else if (!strsep(&options, "="))
+ return 1;
+
+ if (!strncmp(options, "single", 6)) {
+ strsep(&options, ",");
+ if (!strncmp(options, "di=0", 4))
+ g_chan_mode_opt = LDB_SIN_DI0;
+ else
+ g_chan_mode_opt = LDB_SIN_DI1;
+ } else if (!strncmp(options, "separate", 8)) {
+ g_chan_mode_opt = LDB_SEP;
+ } else if (!strncmp(options, "dual", 4)) {
+ strsep(&options, ",");
+ if (!strncmp(options, "di=", 3)) {
+ if (simple_strtoul(options + 3, NULL, 0) == 0)
+ g_chan_mode_opt = LDB_DUL_DI0;
+ else
+ g_chan_mode_opt = LDB_DUL_DI1;
+ }
+ } else if (!strncmp(options, "split", 5)) {
+ strsep(&options, ",");
+ if (!strncmp(options, "di=", 3)) {
+ if (simple_strtoul(options + 3, NULL, 0) == 0)
+ g_chan_mode_opt = LDB_SPL_DI0;
+ else
+ g_chan_mode_opt = LDB_SPL_DI1;
+ }
+ } else
+ return 1;
+
+ if ((strsep(&options, ",") != NULL) &&
+ !strncmp(options, "ch0_map=", 8)) {
+ if (!strncmp(options + 8, "SPWG", 4))
+ g_chan_bit_map[0] = LDB_BIT_MAP_SPWG;
+ else
+ g_chan_bit_map[0] = LDB_BIT_MAP_JEIDA;
+ }
+
+ if (!(g_chan_mode_opt == LDB_SIN_DI0 ||
+ g_chan_mode_opt == LDB_SIN_DI1) &&
+ (strsep(&options, ",") != NULL) &&
+ !strncmp(options, "ch1_map=", 8)) {
+ if (!strncmp(options + 8, "SPWG", 4))
+ g_chan_bit_map[1] = LDB_BIT_MAP_SPWG;
+ else
+ g_chan_bit_map[1] = LDB_BIT_MAP_JEIDA;
+ }
+
+ g_boot_cmd = true;
+
+ return 1;
+}
+__setup("ldb", ldb_setup);
+
+static int __init ldb_init(void)
+{
+ int ret;
+
+ ret = platform_driver_register(&mxcldb_driver);
+ return 0;
+}
+
+static void __exit ldb_uninit(void)
+{
+ platform_driver_unregister(&mxcldb_driver);
+}
+
+module_init(ldb_init);
+module_exit(ldb_uninit);
+
+MODULE_AUTHOR("Freescale Semiconductor, Inc.");
+MODULE_DESCRIPTION("MXC LDB driver");
+MODULE_LICENSE("GPL");