diff options
author | Mirko Vogt <mirko@openwrt.org> | 2008-12-12 11:58:53 +0000 |
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committer | Mirko Vogt <mirko@openwrt.org> | 2008-12-12 11:58:53 +0000 |
commit | 614683faf8029100802db06a825648d0b6490285 (patch) | |
tree | 7401b135dc7ce24ff0175e67e0f2ce7f96296ff0 /target/linux/s3c24xx/patches/0008-gta01-jbt6k74.patch.patch | |
parent | 4a018d2445c5f249179ff82c8fffb0e3b717f738 (diff) | |
download | upstream-614683faf8029100802db06a825648d0b6490285.tar.gz upstream-614683faf8029100802db06a825648d0b6490285.tar.bz2 upstream-614683faf8029100802db06a825648d0b6490285.zip |
changed Makefile and profiles, added patches for kernel 2.6.24 (stable-branch of Openmoko)
SVN-Revision: 13613
Diffstat (limited to 'target/linux/s3c24xx/patches/0008-gta01-jbt6k74.patch.patch')
-rwxr-xr-x | target/linux/s3c24xx/patches/0008-gta01-jbt6k74.patch.patch | 748 |
1 files changed, 0 insertions, 748 deletions
diff --git a/target/linux/s3c24xx/patches/0008-gta01-jbt6k74.patch.patch b/target/linux/s3c24xx/patches/0008-gta01-jbt6k74.patch.patch deleted file mode 100755 index f5ea55e3f4..0000000000 --- a/target/linux/s3c24xx/patches/0008-gta01-jbt6k74.patch.patch +++ /dev/null @@ -1,748 +0,0 @@ -From 5b0814282e6878f7f2f07b98cc8b0128e7ea423d Mon Sep 17 00:00:00 2001 -From: mokopatches <mokopatches@openmoko.org> -Date: Wed, 16 Jul 2008 14:44:48 +0100 -Subject: [PATCH] gta01-jbt6k74.patch - This driver adds support for the SPI-based control interface of the LCM (LCD - Panel) found on the FIC GTA01 hardware. - -The specific panel in this hardware is a TPO TD028TTEC1, but the driver should -be able to drive any other diplay based on the JBT6K74-AS controller ASIC. - -Signed-off-by: Harald Welte <laforge@openmoko.org> ---- - arch/arm/mach-s3c2410/Kconfig | 1 + - drivers/video/display/Kconfig | 11 + - drivers/video/display/Makefile | 1 + - drivers/video/display/jbt6k74.c | 678 +++++++++++++++++++++++++++++++++++++++ - 4 files changed, 691 insertions(+), 0 deletions(-) - create mode 100644 drivers/video/display/jbt6k74.c - -diff --git a/arch/arm/mach-s3c2410/Kconfig b/arch/arm/mach-s3c2410/Kconfig -index 7e3a1a2..58519e6 100644 ---- a/arch/arm/mach-s3c2410/Kconfig -+++ b/arch/arm/mach-s3c2410/Kconfig -@@ -114,6 +114,7 @@ config MACH_VR1000 - config MACH_QT2410 - bool "QT2410" - select CPU_S3C2410 -+ select DISPLAY_JBT6K74 - help - Say Y here if you are using the Armzone QT2410 - -diff --git a/drivers/video/display/Kconfig b/drivers/video/display/Kconfig -index f99af93..f0da483 100644 ---- a/drivers/video/display/Kconfig -+++ b/drivers/video/display/Kconfig -@@ -21,4 +21,15 @@ config DISPLAY_SUPPORT - comment "Display hardware drivers" - depends on DISPLAY_SUPPORT - -+config DISPLAY_JBT6K74 -+ tristate "TPO JBT6K74-AS TFT display ASIC control interface" -+ depends on SPI_MASTER && SYSFS -+ help -+ SPI driver for the control interface of TFT panels containing -+ the TPO JBT6K74-AS controller ASIC, such as the TPO TD028TTEC1 -+ TFT diplay module used in the FIC/OpenMoko Neo1973 GSM phones. -+ -+ The control interface is required for display operation, as it -+ controls power management, display timing and gamma calibration. -+ - endmenu -diff --git a/drivers/video/display/Makefile b/drivers/video/display/Makefile -index c0ea832..011b69d 100644 ---- a/drivers/video/display/Makefile -+++ b/drivers/video/display/Makefile -@@ -3,4 +3,5 @@ - display-objs := display-sysfs.o - - obj-$(CONFIG_DISPLAY_SUPPORT) += display.o -+obj-$(CONFIG_DISPLAY_JBT6K74) += jbt6k74.o - -diff --git a/drivers/video/display/jbt6k74.c b/drivers/video/display/jbt6k74.c -new file mode 100644 -index 0000000..d021d7e ---- /dev/null -+++ b/drivers/video/display/jbt6k74.c -@@ -0,0 +1,678 @@ -+/* Linux kernel driver for the tpo JBT6K74-AS LCM ASIC -+ * -+ * Copyright (C) 2006-2007 by OpenMoko, Inc. -+ * Author: Harald Welte <laforge@openmoko.org>, -+ * Stefan Schmidt <stefan@openmoko.org> -+ * 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., 59 Temple Place, Suite 330, Boston, -+ * MA 02111-1307 USA -+ * -+ */ -+#include <linux/kernel.h> -+#include <linux/types.h> -+#include <linux/module.h> -+#include <linux/device.h> -+#include <linux/platform_device.h> -+#include <linux/delay.h> -+ -+#include <linux/spi/spi.h> -+ -+enum jbt_register { -+ JBT_REG_SLEEP_IN = 0x10, -+ JBT_REG_SLEEP_OUT = 0x11, -+ -+ JBT_REG_DISPLAY_OFF = 0x28, -+ JBT_REG_DISPLAY_ON = 0x29, -+ -+ JBT_REG_RGB_FORMAT = 0x3a, -+ JBT_REG_QUAD_RATE = 0x3b, -+ -+ JBT_REG_POWER_ON_OFF = 0xb0, -+ JBT_REG_BOOSTER_OP = 0xb1, -+ JBT_REG_BOOSTER_MODE = 0xb2, -+ JBT_REG_BOOSTER_FREQ = 0xb3, -+ JBT_REG_OPAMP_SYSCLK = 0xb4, -+ JBT_REG_VSC_VOLTAGE = 0xb5, -+ JBT_REG_VCOM_VOLTAGE = 0xb6, -+ JBT_REG_EXT_DISPL = 0xb7, -+ JBT_REG_OUTPUT_CONTROL = 0xb8, -+ JBT_REG_DCCLK_DCEV = 0xb9, -+ JBT_REG_DISPLAY_MODE1 = 0xba, -+ JBT_REG_DISPLAY_MODE2 = 0xbb, -+ JBT_REG_DISPLAY_MODE = 0xbc, -+ JBT_REG_ASW_SLEW = 0xbd, -+ JBT_REG_DUMMY_DISPLAY = 0xbe, -+ JBT_REG_DRIVE_SYSTEM = 0xbf, -+ -+ JBT_REG_SLEEP_OUT_FR_A = 0xc0, -+ JBT_REG_SLEEP_OUT_FR_B = 0xc1, -+ JBT_REG_SLEEP_OUT_FR_C = 0xc2, -+ JBT_REG_SLEEP_IN_LCCNT_D = 0xc3, -+ JBT_REG_SLEEP_IN_LCCNT_E = 0xc4, -+ JBT_REG_SLEEP_IN_LCCNT_F = 0xc5, -+ JBT_REG_SLEEP_IN_LCCNT_G = 0xc6, -+ -+ JBT_REG_GAMMA1_FINE_1 = 0xc7, -+ JBT_REG_GAMMA1_FINE_2 = 0xc8, -+ JBT_REG_GAMMA1_INCLINATION = 0xc9, -+ JBT_REG_GAMMA1_BLUE_OFFSET = 0xca, -+ -+ /* VGA */ -+ JBT_REG_BLANK_CONTROL = 0xcf, -+ JBT_REG_BLANK_TH_TV = 0xd0, -+ JBT_REG_CKV_ON_OFF = 0xd1, -+ JBT_REG_CKV_1_2 = 0xd2, -+ JBT_REG_OEV_TIMING = 0xd3, -+ JBT_REG_ASW_TIMING_1 = 0xd4, -+ JBT_REG_ASW_TIMING_2 = 0xd5, -+ -+ /* QVGA */ -+ JBT_REG_BLANK_CONTROL_QVGA = 0xd6, -+ JBT_REG_BLANK_TH_TV_QVGA = 0xd7, -+ JBT_REG_CKV_ON_OFF_QVGA = 0xd8, -+ JBT_REG_CKV_1_2_QVGA = 0xd9, -+ JBT_REG_OEV_TIMING_QVGA = 0xde, -+ JBT_REG_ASW_TIMING_1_QVGA = 0xdf, -+ JBT_REG_ASW_TIMING_2_QVGA = 0xe0, -+ -+ -+ JBT_REG_HCLOCK_VGA = 0xec, -+ JBT_REG_HCLOCK_QVGA = 0xed, -+ -+}; -+ -+enum jbt_state { -+ JBT_STATE_DEEP_STANDBY, -+ JBT_STATE_SLEEP, -+ JBT_STATE_NORMAL, -+ JBT_STATE_QVGA_NORMAL, -+}; -+ -+static const char *jbt_state_names[] = { -+ [JBT_STATE_DEEP_STANDBY] = "deep-standby", -+ [JBT_STATE_SLEEP] = "sleep", -+ [JBT_STATE_NORMAL] = "normal", -+ [JBT_STATE_QVGA_NORMAL] = "qvga-normal", -+}; -+ -+struct jbt_info { -+ enum jbt_state state, last_state; -+ struct spi_device *spi_dev; -+ struct mutex lock; /* protects tx_buf and reg_cache */ -+ u16 tx_buf[8]; -+ u16 reg_cache[0xEE]; -+}; -+ -+#define JBT_COMMAND 0x000 -+#define JBT_DATA 0x100 -+ -+static int jbt_reg_write_nodata(struct jbt_info *jbt, u8 reg) -+{ -+ int rc; -+ -+ mutex_lock(&jbt->lock); -+ -+ jbt->tx_buf[0] = JBT_COMMAND | reg; -+ rc = spi_write(jbt->spi_dev, (u8 *)jbt->tx_buf, -+ 1*sizeof(u16)); -+ if (rc == 0) -+ jbt->reg_cache[reg] = 0; -+ -+ mutex_unlock(&jbt->lock); -+ -+ return rc; -+} -+ -+ -+static int jbt_reg_write(struct jbt_info *jbt, u8 reg, u8 data) -+{ -+ int rc; -+ -+ mutex_lock(&jbt->lock); -+ -+ jbt->tx_buf[0] = JBT_COMMAND | reg; -+ jbt->tx_buf[1] = JBT_DATA | data; -+ rc = spi_write(jbt->spi_dev, (u8 *)jbt->tx_buf, -+ 2*sizeof(u16)); -+ if (rc == 0) -+ jbt->reg_cache[reg] = data; -+ -+ mutex_unlock(&jbt->lock); -+ -+ return rc; -+} -+ -+static int jbt_reg_write16(struct jbt_info *jbt, u8 reg, u16 data) -+{ -+ int rc; -+ -+ mutex_lock(&jbt->lock); -+ -+ jbt->tx_buf[0] = JBT_COMMAND | reg; -+ jbt->tx_buf[1] = JBT_DATA | (data >> 8); -+ jbt->tx_buf[2] = JBT_DATA | (data & 0xff); -+ -+ rc = spi_write(jbt->spi_dev, (u8 *)jbt->tx_buf, -+ 3*sizeof(u16)); -+ if (rc == 0) -+ jbt->reg_cache[reg] = data; -+ -+ mutex_unlock(&jbt->lock); -+ -+ return rc; -+} -+ -+static int jbt_init_regs(struct jbt_info *jbt, int qvga) -+{ -+ int rc; -+ -+ dev_dbg(&jbt->spi_dev->dev, "entering %cVGA mode\n", qvga ? 'Q' : ' '); -+ -+ rc = jbt_reg_write(jbt, JBT_REG_DISPLAY_MODE1, 0x01); -+ rc |= jbt_reg_write(jbt, JBT_REG_DISPLAY_MODE2, 0x00); -+ rc |= jbt_reg_write(jbt, JBT_REG_RGB_FORMAT, 0x60); -+ rc |= jbt_reg_write(jbt, JBT_REG_DRIVE_SYSTEM, 0x10); -+ rc |= jbt_reg_write(jbt, JBT_REG_BOOSTER_OP, 0x56); -+ rc |= jbt_reg_write(jbt, JBT_REG_BOOSTER_MODE, 0x33); -+ rc |= jbt_reg_write(jbt, JBT_REG_BOOSTER_FREQ, 0x11); -+ rc |= jbt_reg_write(jbt, JBT_REG_OPAMP_SYSCLK, 0x02); -+ rc |= jbt_reg_write(jbt, JBT_REG_VSC_VOLTAGE, 0x2b); -+ rc |= jbt_reg_write(jbt, JBT_REG_VCOM_VOLTAGE, 0x40); -+ rc |= jbt_reg_write(jbt, JBT_REG_EXT_DISPL, 0x03); -+ rc |= jbt_reg_write(jbt, JBT_REG_DCCLK_DCEV, 0x04); -+ /* -+ * default of 0x02 in JBT_REG_ASW_SLEW responsible for 72Hz requirement -+ * to avoid red / blue flicker -+ */ -+ rc |= jbt_reg_write(jbt, JBT_REG_ASW_SLEW, 0x04); -+ rc |= jbt_reg_write(jbt, JBT_REG_DUMMY_DISPLAY, 0x00); -+ -+ rc |= jbt_reg_write(jbt, JBT_REG_SLEEP_OUT_FR_A, 0x11); -+ rc |= jbt_reg_write(jbt, JBT_REG_SLEEP_OUT_FR_B, 0x11); -+ rc |= jbt_reg_write(jbt, JBT_REG_SLEEP_OUT_FR_C, 0x11); -+ rc |= jbt_reg_write16(jbt, JBT_REG_SLEEP_IN_LCCNT_D, 0x2040); -+ rc |= jbt_reg_write16(jbt, JBT_REG_SLEEP_IN_LCCNT_E, 0x60c0); -+ rc |= jbt_reg_write16(jbt, JBT_REG_SLEEP_IN_LCCNT_F, 0x1020); -+ rc |= jbt_reg_write16(jbt, JBT_REG_SLEEP_IN_LCCNT_G, 0x60c0); -+ -+ rc |= jbt_reg_write16(jbt, JBT_REG_GAMMA1_FINE_1, 0x5533); -+ rc |= jbt_reg_write(jbt, JBT_REG_GAMMA1_FINE_2, 0x00); -+ rc |= jbt_reg_write(jbt, JBT_REG_GAMMA1_INCLINATION, 0x00); -+ rc |= jbt_reg_write(jbt, JBT_REG_GAMMA1_BLUE_OFFSET, 0x00); -+ -+ if (!qvga) { -+ rc |= jbt_reg_write16(jbt, JBT_REG_HCLOCK_VGA, 0x1f0); -+ rc |= jbt_reg_write(jbt, JBT_REG_BLANK_CONTROL, 0x02); -+ rc |= jbt_reg_write16(jbt, JBT_REG_BLANK_TH_TV, 0x0804); -+ -+ rc |= jbt_reg_write(jbt, JBT_REG_CKV_ON_OFF, 0x01); -+ rc |= jbt_reg_write16(jbt, JBT_REG_CKV_1_2, 0x0000); -+ -+ rc |= jbt_reg_write16(jbt, JBT_REG_OEV_TIMING, 0x0d0e); -+ rc |= jbt_reg_write16(jbt, JBT_REG_ASW_TIMING_1, 0x11a4); -+ rc |= jbt_reg_write(jbt, JBT_REG_ASW_TIMING_2, 0x0e); -+ } else { -+ rc |= jbt_reg_write16(jbt, JBT_REG_HCLOCK_QVGA, 0x00ff); -+ rc |= jbt_reg_write(jbt, JBT_REG_BLANK_CONTROL_QVGA, 0x02); -+ rc |= jbt_reg_write16(jbt, JBT_REG_BLANK_TH_TV_QVGA, 0x0804); -+ -+ rc |= jbt_reg_write(jbt, JBT_REG_CKV_ON_OFF_QVGA, 0x01); -+ rc |= jbt_reg_write16(jbt, JBT_REG_CKV_1_2_QVGA, 0x0008); -+ -+ rc |= jbt_reg_write16(jbt, JBT_REG_OEV_TIMING_QVGA, 0x050a); -+ rc |= jbt_reg_write16(jbt, JBT_REG_ASW_TIMING_1_QVGA, 0x0a19); -+ rc |= jbt_reg_write(jbt, JBT_REG_ASW_TIMING_2_QVGA, 0x0a); -+ } -+ -+ return rc ? -EIO : 0; -+} -+ -+static int standby_to_sleep(struct jbt_info *jbt) -+{ -+ int rc; -+ -+ /* three times command zero */ -+ rc = jbt_reg_write_nodata(jbt, 0x00); -+ mdelay(1); -+ rc |= jbt_reg_write_nodata(jbt, 0x00); -+ mdelay(1); -+ rc |= jbt_reg_write_nodata(jbt, 0x00); -+ mdelay(1); -+ -+ /* deep standby out */ -+ rc |= jbt_reg_write(jbt, JBT_REG_POWER_ON_OFF, 0x17); -+ -+ return rc ? -EIO : 0; -+} -+ -+static int sleep_to_normal(struct jbt_info *jbt) -+{ -+ int rc; -+ -+ /* RGB I/F on, RAM wirte off, QVGA through, SIGCON enable */ -+ rc = jbt_reg_write(jbt, JBT_REG_DISPLAY_MODE, 0x80); -+ -+ /* Quad mode off */ -+ rc |= jbt_reg_write(jbt, JBT_REG_QUAD_RATE, 0x00); -+ -+ /* AVDD on, XVDD on */ -+ rc |= jbt_reg_write(jbt, JBT_REG_POWER_ON_OFF, 0x16); -+ -+ /* Output control */ -+ rc |= jbt_reg_write16(jbt, JBT_REG_OUTPUT_CONTROL, 0xfff9); -+ -+ /* Sleep mode off */ -+ rc |= jbt_reg_write_nodata(jbt, JBT_REG_SLEEP_OUT); -+ -+ /* initialize register set */ -+ rc |= jbt_init_regs(jbt, 0); -+ -+ return rc ? -EIO : 0; -+} -+ -+static int sleep_to_qvga_normal(struct jbt_info *jbt) -+{ -+ int rc; -+ -+ /* RGB I/F on, RAM wirte off, QVGA through, SIGCON enable */ -+ rc = jbt_reg_write(jbt, JBT_REG_DISPLAY_MODE, 0x81); -+ -+ /* Quad mode on */ -+ rc |= jbt_reg_write(jbt, JBT_REG_QUAD_RATE, 0x22); -+ -+ /* AVDD on, XVDD on */ -+ rc |= jbt_reg_write(jbt, JBT_REG_POWER_ON_OFF, 0x16); -+ -+ /* Output control */ -+ rc |= jbt_reg_write16(jbt, JBT_REG_OUTPUT_CONTROL, 0xfff9); -+ -+ /* Sleep mode off */ -+ rc |= jbt_reg_write_nodata(jbt, JBT_REG_SLEEP_OUT); -+ -+ /* initialize register set for qvga*/ -+ rc |= jbt_init_regs(jbt, 1); -+ -+ return rc ? -EIO : 0; -+} -+ -+static int normal_to_sleep(struct jbt_info *jbt) -+{ -+ int rc; -+ -+ rc = jbt_reg_write_nodata(jbt, JBT_REG_DISPLAY_OFF); -+ rc |= jbt_reg_write16(jbt, JBT_REG_OUTPUT_CONTROL, 0x8002); -+ rc |= jbt_reg_write_nodata(jbt, JBT_REG_SLEEP_IN); -+ -+ return rc ? -EIO : 0; -+} -+ -+static int sleep_to_standby(struct jbt_info *jbt) -+{ -+ return jbt_reg_write(jbt, JBT_REG_POWER_ON_OFF, 0x00); -+} -+ -+/* frontend function */ -+int jbt6k74_enter_state(struct jbt_info *jbt, enum jbt_state new_state) -+{ -+ int rc = -EINVAL; -+ -+ dev_dbg(&jbt->spi_dev->dev, "entering (old_state=%u, " -+ "new_state=%u)\n", jbt->state, new_state); -+ -+ switch (jbt->state) { -+ case JBT_STATE_DEEP_STANDBY: -+ switch (new_state) { -+ case JBT_STATE_DEEP_STANDBY: -+ rc = 0; -+ break; -+ case JBT_STATE_SLEEP: -+ rc = standby_to_sleep(jbt); -+ break; -+ case JBT_STATE_NORMAL: -+ /* first transition into sleep */ -+ rc = standby_to_sleep(jbt); -+ /* then transition into normal */ -+ rc |= sleep_to_normal(jbt); -+ break; -+ case JBT_STATE_QVGA_NORMAL: -+ /* first transition into sleep */ -+ rc = standby_to_sleep(jbt); -+ /* then transition into normal */ -+ rc |= sleep_to_qvga_normal(jbt); -+ break; -+ } -+ break; -+ case JBT_STATE_SLEEP: -+ switch (new_state) { -+ case JBT_STATE_SLEEP: -+ rc = 0; -+ break; -+ case JBT_STATE_DEEP_STANDBY: -+ rc = sleep_to_standby(jbt); -+ break; -+ case JBT_STATE_NORMAL: -+ rc = sleep_to_normal(jbt); -+ break; -+ case JBT_STATE_QVGA_NORMAL: -+ rc = sleep_to_qvga_normal(jbt); -+ break; -+ } -+ break; -+ case JBT_STATE_NORMAL: -+ switch (new_state) { -+ case JBT_STATE_NORMAL: -+ rc = 0; -+ break; -+ case JBT_STATE_DEEP_STANDBY: -+ /* first transition into sleep */ -+ rc = normal_to_sleep(jbt); -+ /* then transition into deep standby */ -+ rc |= sleep_to_standby(jbt); -+ break; -+ case JBT_STATE_SLEEP: -+ rc = normal_to_sleep(jbt); -+ break; -+ case JBT_STATE_QVGA_NORMAL: -+ /* first transition into sleep */ -+ rc = normal_to_sleep(jbt); -+ /* second transition into deep standby */ -+ rc |= sleep_to_standby(jbt); -+ /* third transition into sleep */ -+ rc |= standby_to_sleep(jbt); -+ /* fourth transition into normal */ -+ rc |= sleep_to_qvga_normal(jbt); -+ break; -+ } -+ break; -+ case JBT_STATE_QVGA_NORMAL: -+ switch (new_state) { -+ case JBT_STATE_QVGA_NORMAL: -+ rc = 0; -+ break; -+ case JBT_STATE_DEEP_STANDBY: -+ /* first transition into sleep */ -+ rc = normal_to_sleep(jbt); -+ /* then transition into deep standby */ -+ rc |= sleep_to_standby(jbt); -+ break; -+ case JBT_STATE_SLEEP: -+ rc = normal_to_sleep(jbt); -+ break; -+ case JBT_STATE_NORMAL: -+ /* first transition into sleep */ -+ rc = normal_to_sleep(jbt); -+ /* second transition into deep standby */ -+ rc |= sleep_to_standby(jbt); -+ /* third transition into sleep */ -+ rc |= standby_to_sleep(jbt); -+ /* fourth transition into normal */ -+ rc |= sleep_to_normal(jbt); -+ break; -+ } -+ break; -+ } -+ if (rc == 0) -+ jbt->state = new_state; -+ -+ return rc; -+} -+EXPORT_SYMBOL_GPL(jbt6k74_enter_state); -+ -+int jbt6k74_display_onoff(struct jbt_info *jbt, int on) -+{ -+ if (on) -+ return jbt_reg_write_nodata(jbt, JBT_REG_DISPLAY_ON); -+ else -+ return jbt_reg_write_nodata(jbt, JBT_REG_DISPLAY_OFF); -+} -+EXPORT_SYMBOL_GPL(jbt6k74_display_onoff); -+ -+static ssize_t state_read(struct device *dev, struct device_attribute *attr, -+ char *buf) -+{ -+ struct jbt_info *jbt = dev_get_drvdata(dev); -+ -+ if (jbt->state >= ARRAY_SIZE(jbt_state_names)) -+ return -EIO; -+ -+ return sprintf(buf, "%s\n", jbt_state_names[jbt->state]); -+} -+ -+static ssize_t state_write(struct device *dev, struct device_attribute *attr, -+ const char *buf, size_t count) -+{ -+ struct jbt_info *jbt = dev_get_drvdata(dev); -+ int i, rc; -+ -+ for (i = 0; i < ARRAY_SIZE(jbt_state_names); i++) { -+ if (!strncmp(buf, jbt_state_names[i], -+ strlen(jbt_state_names[i]))) { -+ rc = jbt6k74_enter_state(jbt, i); -+ if (rc) -+ return rc; -+ switch (i) { -+ case JBT_STATE_NORMAL: -+ case JBT_STATE_QVGA_NORMAL: -+ /* Enable display again after deep-standby */ -+ rc = jbt6k74_display_onoff(jbt, 1); -+ if (rc) -+ return rc; -+ break; -+ default: -+ break; -+ } -+ return count; -+ } -+ } -+ -+ return -EINVAL; -+} -+ -+static DEVICE_ATTR(state, 0644, state_read, state_write); -+ -+static int reg_by_string(const char *name) -+{ -+ if (!strcmp(name, "gamma_fine1")) -+ return JBT_REG_GAMMA1_FINE_1; -+ else if (!strcmp(name, "gamma_fine2")) -+ return JBT_REG_GAMMA1_FINE_2; -+ else if (!strcmp(name, "gamma_inclination")) -+ return JBT_REG_GAMMA1_INCLINATION; -+ else -+ return JBT_REG_GAMMA1_BLUE_OFFSET; -+} -+ -+static ssize_t gamma_read(struct device *dev, struct device_attribute *attr, -+ char *buf) -+{ -+ struct jbt_info *jbt = dev_get_drvdata(dev); -+ int reg = reg_by_string(attr->attr.name); -+ u16 val; -+ -+ mutex_lock(&jbt->lock); -+ val = jbt->reg_cache[reg]; -+ mutex_unlock(&jbt->lock); -+ -+ return sprintf(buf, "0x%04x\n", val); -+} -+ -+static ssize_t gamma_write(struct device *dev, struct device_attribute *attr, -+ const char *buf, size_t count) -+{ -+ struct jbt_info *jbt = dev_get_drvdata(dev); -+ int reg = reg_by_string(attr->attr.name); -+ unsigned long val = simple_strtoul(buf, NULL, 10); -+ -+ jbt_reg_write(jbt, reg, val & 0xff); -+ -+ return count; -+} -+ -+static DEVICE_ATTR(gamma_fine1, 0644, gamma_read, gamma_write); -+static DEVICE_ATTR(gamma_fine2, 0644, gamma_read, gamma_write); -+static DEVICE_ATTR(gamma_inclination, 0644, gamma_read, gamma_write); -+static DEVICE_ATTR(gamma_blue_offset, 0644, gamma_read, gamma_write); -+ -+static struct attribute *jbt_sysfs_entries[] = { -+ &dev_attr_state.attr, -+ &dev_attr_gamma_fine1.attr, -+ &dev_attr_gamma_fine2.attr, -+ &dev_attr_gamma_inclination.attr, -+ &dev_attr_gamma_blue_offset.attr, -+ NULL, -+}; -+ -+static struct attribute_group jbt_attr_group = { -+ .name = NULL, -+ .attrs = jbt_sysfs_entries, -+}; -+ -+/* linux device model infrastructure */ -+ -+static int __devinit jbt_probe(struct spi_device *spi) -+{ -+ int rc; -+ struct jbt_info *jbt; -+ -+ /* the controller doesn't have a MISO pin; we can't do detection */ -+ -+ spi->mode = SPI_CPOL | SPI_CPHA; -+ spi->bits_per_word = 9; -+ -+ rc = spi_setup(spi); -+ if (rc < 0) { -+ dev_err(&spi->dev, -+ "error during spi_setup of jbt6k74 driver\n"); -+ return rc; -+ } -+ -+ jbt = kzalloc(sizeof(*jbt), GFP_KERNEL); -+ if (!jbt) -+ return -ENOMEM; -+ -+ jbt->spi_dev = spi; -+ jbt->state = JBT_STATE_DEEP_STANDBY; -+ mutex_init(&jbt->lock); -+ -+ dev_set_drvdata(&spi->dev, jbt); -+ -+ rc = jbt6k74_enter_state(jbt, JBT_STATE_NORMAL); -+ if (rc < 0) { -+ dev_err(&spi->dev, "cannot enter NORMAL state\n"); -+ goto err_free_drvdata; -+ } -+ -+ rc = jbt6k74_display_onoff(jbt, 1); -+ if (rc < 0) { -+ dev_err(&spi->dev, "cannot switch display on\n"); -+ goto err_standby; -+ } -+ -+ rc = sysfs_create_group(&spi->dev.kobj, &jbt_attr_group); -+ if (rc < 0) { -+ dev_err(&spi->dev, "cannot create sysfs group\n"); -+ goto err_off; -+ } -+ -+ return 0; -+ -+err_off: -+ jbt6k74_display_onoff(jbt, 0); -+err_standby: -+ jbt6k74_enter_state(jbt, JBT_STATE_DEEP_STANDBY); -+err_free_drvdata: -+ dev_set_drvdata(&spi->dev, NULL); -+ kfree(jbt); -+ -+ return rc; -+} -+ -+static int __devexit jbt_remove(struct spi_device *spi) -+{ -+ struct jbt_info *jbt = dev_get_drvdata(&spi->dev); -+ -+ /* We don't want to switch off the display in case the user -+ * accidentially onloads the module (whose use count normally is 0) */ -+ -+ sysfs_remove_group(&spi->dev.kobj, &jbt_attr_group); -+ dev_set_drvdata(&spi->dev, NULL); -+ kfree(jbt); -+ -+ return 0; -+} -+ -+#ifdef CONFIG_PM -+static int jbt_suspend(struct spi_device *spi, pm_message_t state) -+{ -+ struct jbt_info *jbt = dev_get_drvdata(&spi->dev); -+ -+ /* Save mode for resume */ -+ jbt->last_state = jbt->state; -+ jbt6k74_enter_state(jbt, JBT_STATE_DEEP_STANDBY); -+ -+ return 0; -+} -+ -+static int jbt_resume(struct spi_device *spi) -+{ -+ struct jbt_info *jbt = dev_get_drvdata(&spi->dev); -+ -+ jbt6k74_enter_state(jbt, jbt->last_state); -+ -+ switch (jbt->last_state) { -+ case JBT_STATE_NORMAL: -+ case JBT_STATE_QVGA_NORMAL: -+ jbt6k74_display_onoff(jbt, 1); -+ break; -+ default: -+ break; -+ } -+ -+ return 0; -+} -+#else -+#define jbt_suspend NULL -+#define jbt_resume NULL -+#endif -+ -+static struct spi_driver jbt6k74_driver = { -+ .driver = { -+ .name = "jbt6k74", -+ .owner = THIS_MODULE, -+ }, -+ -+ .probe = jbt_probe, -+ .remove = __devexit_p(jbt_remove), -+ .suspend = jbt_suspend, -+ .resume = jbt_resume, -+}; -+ -+static int __init jbt_init(void) -+{ -+ return spi_register_driver(&jbt6k74_driver); -+} -+ -+static void __exit jbt_exit(void) -+{ -+ spi_unregister_driver(&jbt6k74_driver); -+} -+ -+MODULE_DESCRIPTION("SPI driver for tpo JBT6K74-AS LCM control interface"); -+MODULE_AUTHOR("Harald Welte <laforge@openmoko.org>"); -+MODULE_LICENSE("GPL"); -+ -+module_init(jbt_init); -+module_exit(jbt_exit); --- -1.5.6.3 - |