summaryrefslogtreecommitdiffstats
path: root/kernel/drivers/video/fbdev/via/vt1636.c
diff options
context:
space:
mode:
authorYunhong Jiang <yunhong.jiang@intel.com>2015-08-04 12:17:53 -0700
committerYunhong Jiang <yunhong.jiang@intel.com>2015-08-04 15:44:42 -0700
commit9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch)
tree1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/drivers/video/fbdev/via/vt1636.c
parent98260f3884f4a202f9ca5eabed40b1354c489b29 (diff)
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/drivers/video/fbdev/via/vt1636.c')
-rw-r--r--kernel/drivers/video/fbdev/via/vt1636.c244
1 files changed, 244 insertions, 0 deletions
diff --git a/kernel/drivers/video/fbdev/via/vt1636.c b/kernel/drivers/video/fbdev/via/vt1636.c
new file mode 100644
index 000000000..ee2903b47
--- /dev/null
+++ b/kernel/drivers/video/fbdev/via/vt1636.c
@@ -0,0 +1,244 @@
+/*
+ * Copyright 1998-2008 VIA Technologies, Inc. All Rights Reserved.
+ * Copyright 2001-2008 S3 Graphics, 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, or (at your option) any later version.
+
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTIES OR REPRESENTATIONS; 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.,
+ * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#include <linux/via-core.h>
+#include <linux/via_i2c.h>
+#include "global.h"
+
+static const struct IODATA common_init_data[] = {
+/* Index, Mask, Value */
+ /* Set panel power sequence timing */
+ {0x10, 0xC0, 0x00},
+ /* T1: VDD on - Data on. Each increment is 1 ms. (50ms = 031h) */
+ {0x0B, 0xFF, 0x40},
+ /* T2: Data on - Backlight on. Each increment is 2 ms. (210ms = 068h) */
+ {0x0C, 0xFF, 0x31},
+ /* T3: Backlight off -Data off. Each increment is 2 ms. (210ms = 068h)*/
+ {0x0D, 0xFF, 0x31},
+ /* T4: Data off - VDD off. Each increment is 1 ms. (50ms = 031h) */
+ {0x0E, 0xFF, 0x68},
+ /* T5: VDD off - VDD on. Each increment is 100 ms. (500ms = 04h) */
+ {0x0F, 0xFF, 0x68},
+ /* LVDS output power up */
+ {0x09, 0xA0, 0xA0},
+ /* turn on back light */
+ {0x10, 0x33, 0x13}
+};
+
+/* Index, Mask, Value */
+static const struct IODATA dual_channel_enable_data = {0x08, 0xF0, 0xE0};
+static const struct IODATA single_channel_enable_data = {0x08, 0xF0, 0x00};
+static const struct IODATA dithering_enable_data = {0x0A, 0x70, 0x50};
+static const struct IODATA dithering_disable_data = {0x0A, 0x70, 0x00};
+static const struct IODATA vdd_on_data = {0x10, 0x20, 0x20};
+static const struct IODATA vdd_off_data = {0x10, 0x20, 0x00};
+
+u8 viafb_gpio_i2c_read_lvds(struct lvds_setting_information
+ *plvds_setting_info, struct lvds_chip_information *plvds_chip_info,
+ u8 index)
+{
+ u8 data;
+
+ viafb_i2c_readbyte(plvds_chip_info->i2c_port,
+ plvds_chip_info->lvds_chip_slave_addr, index, &data);
+ return data;
+}
+
+void viafb_gpio_i2c_write_mask_lvds(struct lvds_setting_information
+ *plvds_setting_info, struct lvds_chip_information
+ *plvds_chip_info, struct IODATA io_data)
+{
+ int index, data;
+
+ index = io_data.Index;
+ data = viafb_gpio_i2c_read_lvds(plvds_setting_info, plvds_chip_info,
+ index);
+ data = (data & (~io_data.Mask)) | io_data.Data;
+
+ viafb_i2c_writebyte(plvds_chip_info->i2c_port,
+ plvds_chip_info->lvds_chip_slave_addr, index, data);
+}
+
+void viafb_init_lvds_vt1636(struct lvds_setting_information
+ *plvds_setting_info, struct lvds_chip_information *plvds_chip_info)
+{
+ int reg_num, i;
+
+ /* Common settings: */
+ reg_num = ARRAY_SIZE(common_init_data);
+ for (i = 0; i < reg_num; i++)
+ viafb_gpio_i2c_write_mask_lvds(plvds_setting_info,
+ plvds_chip_info, common_init_data[i]);
+
+ /* Input Data Mode Select */
+ if (plvds_setting_info->device_lcd_dualedge)
+ viafb_gpio_i2c_write_mask_lvds(plvds_setting_info,
+ plvds_chip_info, dual_channel_enable_data);
+ else
+ viafb_gpio_i2c_write_mask_lvds(plvds_setting_info,
+ plvds_chip_info, single_channel_enable_data);
+
+ if (plvds_setting_info->LCDDithering)
+ viafb_gpio_i2c_write_mask_lvds(plvds_setting_info,
+ plvds_chip_info, dithering_enable_data);
+ else
+ viafb_gpio_i2c_write_mask_lvds(plvds_setting_info,
+ plvds_chip_info, dithering_disable_data);
+}
+
+void viafb_enable_lvds_vt1636(struct lvds_setting_information
+ *plvds_setting_info,
+ struct lvds_chip_information *plvds_chip_info)
+{
+ viafb_gpio_i2c_write_mask_lvds(plvds_setting_info, plvds_chip_info,
+ vdd_on_data);
+}
+
+void viafb_disable_lvds_vt1636(struct lvds_setting_information
+ *plvds_setting_info,
+ struct lvds_chip_information *plvds_chip_info)
+{
+ viafb_gpio_i2c_write_mask_lvds(plvds_setting_info, plvds_chip_info,
+ vdd_off_data);
+}
+
+bool viafb_lvds_identify_vt1636(u8 i2c_adapter)
+{
+ u8 Buffer[2];
+
+ DEBUG_MSG(KERN_INFO "viafb_lvds_identify_vt1636.\n");
+
+ /* Sense VT1636 LVDS Transmiter */
+ viaparinfo->chip_info->lvds_chip_info.lvds_chip_slave_addr =
+ VT1636_LVDS_I2C_ADDR;
+
+ /* Check vendor ID first: */
+ if (viafb_i2c_readbyte(i2c_adapter, VT1636_LVDS_I2C_ADDR,
+ 0x00, &Buffer[0]))
+ return false;
+ viafb_i2c_readbyte(i2c_adapter, VT1636_LVDS_I2C_ADDR, 0x01, &Buffer[1]);
+
+ if (!((Buffer[0] == 0x06) && (Buffer[1] == 0x11)))
+ return false;
+
+ /* Check Chip ID: */
+ viafb_i2c_readbyte(i2c_adapter, VT1636_LVDS_I2C_ADDR, 0x02, &Buffer[0]);
+ viafb_i2c_readbyte(i2c_adapter, VT1636_LVDS_I2C_ADDR, 0x03, &Buffer[1]);
+ if ((Buffer[0] == 0x45) && (Buffer[1] == 0x33)) {
+ viaparinfo->chip_info->lvds_chip_info.lvds_chip_name =
+ VT1636_LVDS;
+ return true;
+ }
+
+ return false;
+}
+
+static int get_clk_range_index(u32 Clk)
+{
+ if (Clk < DPA_CLK_30M)
+ return DPA_CLK_RANGE_30M;
+ else if (Clk < DPA_CLK_50M)
+ return DPA_CLK_RANGE_30_50M;
+ else if (Clk < DPA_CLK_70M)
+ return DPA_CLK_RANGE_50_70M;
+ else if (Clk < DPA_CLK_100M)
+ return DPA_CLK_RANGE_70_100M;
+ else if (Clk < DPA_CLK_150M)
+ return DPA_CLK_RANGE_100_150M;
+ else
+ return DPA_CLK_RANGE_150M;
+}
+
+static void set_dpa_vt1636(struct lvds_setting_information
+ *plvds_setting_info, struct lvds_chip_information *plvds_chip_info,
+ struct VT1636_DPA_SETTING *p_vt1636_dpa_setting)
+{
+ struct IODATA io_data;
+
+ io_data.Index = 0x09;
+ io_data.Mask = 0x1F;
+ io_data.Data = p_vt1636_dpa_setting->CLK_SEL_ST1;
+ viafb_gpio_i2c_write_mask_lvds(plvds_setting_info,
+ plvds_chip_info, io_data);
+
+ io_data.Index = 0x08;
+ io_data.Mask = 0x0F;
+ io_data.Data = p_vt1636_dpa_setting->CLK_SEL_ST2;
+ viafb_gpio_i2c_write_mask_lvds(plvds_setting_info, plvds_chip_info,
+ io_data);
+}
+
+void viafb_vt1636_patch_skew_on_vt3324(
+ struct lvds_setting_information *plvds_setting_info,
+ struct lvds_chip_information *plvds_chip_info)
+{
+ struct VT1636_DPA_SETTING dpa = {0x00, 0x00}, dpa_16x12 = {0x0B, 0x03},
+ *pdpa;
+ int index;
+
+ DEBUG_MSG(KERN_INFO "viafb_vt1636_patch_skew_on_vt3324.\n");
+
+ /* Graphics DPA settings: */
+ index = get_clk_range_index(plvds_setting_info->vclk);
+ viafb_set_dpa_gfx(plvds_chip_info->output_interface,
+ &GFX_DPA_SETTING_TBL_VT3324[index]);
+
+ /* LVDS Transmitter DPA settings: */
+ if (plvds_setting_info->lcd_panel_hres == 1600 &&
+ plvds_setting_info->lcd_panel_vres == 1200)
+ pdpa = &dpa_16x12;
+ else
+ pdpa = &dpa;
+
+ set_dpa_vt1636(plvds_setting_info, plvds_chip_info, pdpa);
+}
+
+void viafb_vt1636_patch_skew_on_vt3327(
+ struct lvds_setting_information *plvds_setting_info,
+ struct lvds_chip_information *plvds_chip_info)
+{
+ struct VT1636_DPA_SETTING dpa = {0x00, 0x00};
+ int index;
+
+ DEBUG_MSG(KERN_INFO "viafb_vt1636_patch_skew_on_vt3327.\n");
+
+ /* Graphics DPA settings: */
+ index = get_clk_range_index(plvds_setting_info->vclk);
+ viafb_set_dpa_gfx(plvds_chip_info->output_interface,
+ &GFX_DPA_SETTING_TBL_VT3327[index]);
+
+ /* LVDS Transmitter DPA settings: */
+ set_dpa_vt1636(plvds_setting_info, plvds_chip_info, &dpa);
+}
+
+void viafb_vt1636_patch_skew_on_vt3364(
+ struct lvds_setting_information *plvds_setting_info,
+ struct lvds_chip_information *plvds_chip_info)
+{
+ int index;
+
+ DEBUG_MSG(KERN_INFO "viafb_vt1636_patch_skew_on_vt3364.\n");
+
+ /* Graphics DPA settings: */
+ index = get_clk_range_index(plvds_setting_info->vclk);
+ viafb_set_dpa_gfx(plvds_chip_info->output_interface,
+ &GFX_DPA_SETTING_TBL_VT3364[index]);
+}