814 lines
20 KiB
Diff
814 lines
20 KiB
Diff
From 635f44cfde6c057a2ecbb8c9d9a67225e53b6545 Mon Sep 17 00:00:00 2001
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From: Roger Quadros <roger.quadros@nokia.com>
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Date: Wed, 10 Mar 2010 17:32:44 +0200
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Subject: [PATCH 3/10] OMAP: DSS2: Add ACX565AKM Panel Driver
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From: Roger Quadros <roger.quadros@nokia.com>
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Patch-mainline: 2.6.35?
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Git-repo: http://www.gitorious.org/linux-omap-dss2/linux/commit/4f2308f3be2fe631412ea85a80c91414c3bfe730
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This is the panel used on Nokia N900
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Signed-off-by: Roger Quadros <roger.quadros@nokia.com>
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---
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drivers/video/omap2/displays/Kconfig | 6 +
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drivers/video/omap2/displays/Makefile | 1 +
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drivers/video/omap2/displays/panel-acx565akm.c | 760 ++++++++++++++++++++++++
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3 files changed, 767 insertions(+), 0 deletions(-)
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create mode 100644 drivers/video/omap2/displays/panel-acx565akm.c
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diff --git a/drivers/video/omap2/displays/Kconfig b/drivers/video/omap2/displays/Kconfig
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index b12a59c..1f5b7d1 100644
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--- a/drivers/video/omap2/displays/Kconfig
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+++ b/drivers/video/omap2/displays/Kconfig
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@@ -19,4 +19,10 @@ config PANEL_TAAL
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help
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Taal DSI command mode panel from TPO.
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+config PANEL_ACX565AKM
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+ tristate "ACX565AKM Panel"
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+ depends on OMAP2_DSS_SDI
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+ select BACKLIGHT_CLASS_DEVICE
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+ help
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+ This is the LCD panel used on Nokia N900
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endmenu
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diff --git a/drivers/video/omap2/displays/Makefile b/drivers/video/omap2/displays/Makefile
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index 9556464..0af16b7 100644
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--- a/drivers/video/omap2/displays/Makefile
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+++ b/drivers/video/omap2/displays/Makefile
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@@ -2,3 +2,4 @@ obj-$(CONFIG_PANEL_GENERIC) += panel-generic.o
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obj-$(CONFIG_PANEL_SHARP_LS037V7DW01) += panel-sharp-ls037v7dw01.o
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obj-$(CONFIG_PANEL_TAAL) += panel-taal.o
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+obj-$(CONFIG_PANEL_ACX565AKM) += panel-acx565akm.o
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diff --git a/drivers/video/omap2/displays/panel-acx565akm.c b/drivers/video/omap2/displays/panel-acx565akm.c
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new file mode 100644
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index 0000000..27e9847
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--- /dev/null
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+++ b/drivers/video/omap2/displays/panel-acx565akm.c
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@@ -0,0 +1,760 @@
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+/*
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+ * Support for ACX565AKM LCD Panel used on Nokia N900
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+ *
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+ * Copyright (C) 2010 Nokia Corporation
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+ *
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+ * Original Driver Author: Imre Deak <imre.deak@nokia.com>
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+ * Based on panel-generic.c by Tomi Valkeinen <tomi.valkeinen@nokia.com>
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+ * Adapted to new DSS2 framework: Roger Quadros <roger.quadros@nokia.com>
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+ *
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+ * This program is free software; you can redistribute it and/or modify it
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+ * under the terms of the GNU General Public License version 2 as published by
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+ * the Free Software Foundation.
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+ *
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+ * This program is distributed in the hope that it will be useful, but WITHOUT
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+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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+ * more details.
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+ *
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+ * You should have received a copy of the GNU General Public License along with
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+ * this program. If not, see <http://www.gnu.org/licenses/>.
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+ */
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+
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+#include <linux/kernel.h>
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+#include <linux/module.h>
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+#include <linux/platform_device.h>
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+#include <linux/delay.h>
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+#include <linux/spi/spi.h>
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+#include <linux/jiffies.h>
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+#include <linux/sched.h>
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+#include <linux/backlight.h>
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+#include <linux/fb.h>
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+
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+#include <plat/display.h>
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+
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+#define MIPID_CMD_READ_DISP_ID 0x04
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+#define MIPID_CMD_READ_RED 0x06
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+#define MIPID_CMD_READ_GREEN 0x07
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+#define MIPID_CMD_READ_BLUE 0x08
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+#define MIPID_CMD_READ_DISP_STATUS 0x09
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+#define MIPID_CMD_RDDSDR 0x0F
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+#define MIPID_CMD_SLEEP_IN 0x10
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+#define MIPID_CMD_SLEEP_OUT 0x11
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+#define MIPID_CMD_DISP_OFF 0x28
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+#define MIPID_CMD_DISP_ON 0x29
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+#define MIPID_CMD_WRITE_DISP_BRIGHTNESS 0x51
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+#define MIPID_CMD_READ_DISP_BRIGHTNESS 0x52
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+#define MIPID_CMD_WRITE_CTRL_DISP 0x53
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+
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+#define CTRL_DISP_BRIGHTNESS_CTRL_ON (1 << 5)
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+#define CTRL_DISP_AMBIENT_LIGHT_CTRL_ON (1 << 4)
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+#define CTRL_DISP_BACKLIGHT_ON (1 << 2)
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+#define CTRL_DISP_AUTO_BRIGHTNESS_ON (1 << 1)
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+
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+#define MIPID_CMD_READ_CTRL_DISP 0x54
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+#define MIPID_CMD_WRITE_CABC 0x55
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+#define MIPID_CMD_READ_CABC 0x56
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+
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+#define MIPID_VER_LPH8923 3
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+#define MIPID_VER_LS041Y3 4
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+#define MIPID_VER_L4F00311 8
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+#define MIPID_VER_ACX565AKM 9
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+
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+struct acx565akm_device {
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+ char *name;
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+ int enabled;
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+ int model;
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+ int revision;
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+ u8 display_id[3];
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+ unsigned has_bc:1;
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+ unsigned has_cabc:1;
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+ unsigned cabc_mode;
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+ unsigned long hw_guard_end; /* next value of jiffies
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+ when we can issue the
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+ next sleep in/out command */
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+ unsigned long hw_guard_wait; /* max guard time in jiffies */
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+
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+ struct spi_device *spi;
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+ struct mutex mutex;
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+
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+ struct omap_dss_device *dssdev;
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+ struct backlight_device *bl_dev;
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+};
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+
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+static struct acx565akm_device acx_dev;
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+static int acx565akm_bl_update_status(struct backlight_device *dev);
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+
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+/*--------------------MIPID interface-----------------------------*/
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+
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+static void acx565akm_transfer(struct acx565akm_device *md, int cmd,
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+ const u8 *wbuf, int wlen, u8 *rbuf, int rlen)
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+{
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+ struct spi_message m;
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+ struct spi_transfer *x, xfer[5];
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+ int r;
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+
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+ BUG_ON(md->spi == NULL);
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+
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+ spi_message_init(&m);
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+
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+ memset(xfer, 0, sizeof(xfer));
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+ x = &xfer[0];
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+
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+ cmd &= 0xff;
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+ x->tx_buf = &cmd;
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+ x->bits_per_word = 9;
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+ x->len = 2;
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+
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+ if (rlen > 1 && wlen == 0) {
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+ /*
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+ * Between the command and the response data there is a
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+ * dummy clock cycle. Add an extra bit after the command
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+ * word to account for this.
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+ */
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+ x->bits_per_word = 10;
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+ cmd <<= 1;
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+ }
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+ spi_message_add_tail(x, &m);
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+
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+ if (wlen) {
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+ x++;
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+ x->tx_buf = wbuf;
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+ x->len = wlen;
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+ x->bits_per_word = 9;
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+ spi_message_add_tail(x, &m);
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+ }
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+
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+ if (rlen) {
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+ x++;
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+ x->rx_buf = rbuf;
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+ x->len = rlen;
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+ spi_message_add_tail(x, &m);
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+ }
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+
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+ r = spi_sync(md->spi, &m);
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+ if (r < 0)
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+ dev_dbg(&md->spi->dev, "spi_sync %d\n", r);
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+}
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+
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+static inline void acx565akm_cmd(struct acx565akm_device *md, int cmd)
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+{
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+ acx565akm_transfer(md, cmd, NULL, 0, NULL, 0);
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+}
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+
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+static inline void acx565akm_write(struct acx565akm_device *md,
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+ int reg, const u8 *buf, int len)
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+{
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+ acx565akm_transfer(md, reg, buf, len, NULL, 0);
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+}
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+
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+static inline void acx565akm_read(struct acx565akm_device *md,
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+ int reg, u8 *buf, int len)
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+{
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+ acx565akm_transfer(md, reg, NULL, 0, buf, len);
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+}
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+
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+static void hw_guard_start(struct acx565akm_device *md, int guard_msec)
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+{
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+ md->hw_guard_wait = msecs_to_jiffies(guard_msec);
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+ md->hw_guard_end = jiffies + md->hw_guard_wait;
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+}
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+
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+static void hw_guard_wait(struct acx565akm_device *md)
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+{
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+ unsigned long wait = md->hw_guard_end - jiffies;
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+
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+ if ((long)wait > 0 && wait <= md->hw_guard_wait) {
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+ set_current_state(TASK_UNINTERRUPTIBLE);
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+ schedule_timeout(wait);
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+ }
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+}
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+
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+/*----------------------MIPID wrappers----------------------------*/
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+
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+static void set_sleep_mode(struct acx565akm_device *md, int on)
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+{
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+ int cmd;
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+
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+ if (on)
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+ cmd = MIPID_CMD_SLEEP_IN;
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+ else
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+ cmd = MIPID_CMD_SLEEP_OUT;
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+ /*
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+ * We have to keep 120msec between sleep in/out commands.
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+ * (8.2.15, 8.2.16).
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+ */
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+ hw_guard_wait(md);
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+ acx565akm_cmd(md, cmd);
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+ hw_guard_start(md, 120);
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+}
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+
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+static void set_display_state(struct acx565akm_device *md, int enabled)
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+{
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+ int cmd = enabled ? MIPID_CMD_DISP_ON : MIPID_CMD_DISP_OFF;
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+
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+ acx565akm_cmd(md, cmd);
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+}
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+
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+static int panel_enabled(struct acx565akm_device *md)
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+{
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+ u32 disp_status;
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+ int enabled;
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+
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+ acx565akm_read(md, MIPID_CMD_READ_DISP_STATUS, (u8 *)&disp_status, 4);
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+ disp_status = __be32_to_cpu(disp_status);
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+ enabled = (disp_status & (1 << 17)) && (disp_status & (1 << 10));
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+ dev_dbg(&md->spi->dev,
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+ "LCD panel %senabled by bootloader (status 0x%04x)\n",
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+ enabled ? "" : "not ", disp_status);
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+ return enabled;
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+}
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+
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+static int panel_detect(struct acx565akm_device *md)
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+{
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+ acx565akm_read(md, MIPID_CMD_READ_DISP_ID, md->display_id, 3);
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+ dev_dbg(&md->spi->dev, "MIPI display ID: %02x%02x%02x\n",
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+ md->display_id[0], md->display_id[1], md->display_id[2]);
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+
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+ switch (md->display_id[0]) {
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+ case 0x10:
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+ md->model = MIPID_VER_ACX565AKM;
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+ md->name = "acx565akm";
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+ md->has_bc = 1;
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+ md->has_cabc = 1;
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+ break;
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+ case 0x29:
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+ md->model = MIPID_VER_L4F00311;
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+ md->name = "l4f00311";
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+ break;
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+ case 0x45:
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+ md->model = MIPID_VER_LPH8923;
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+ md->name = "lph8923";
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+ break;
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+ case 0x83:
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+ md->model = MIPID_VER_LS041Y3;
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+ md->name = "ls041y3";
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+ break;
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+ default:
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+ md->name = "unknown";
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+ dev_err(&md->spi->dev, "invalid display ID\n");
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+ return -ENODEV;
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+ }
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+
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+ md->revision = md->display_id[1];
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+
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+ dev_info(&md->spi->dev, "omapfb: %s rev %02x LCD detected\n",
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+ md->name, md->revision);
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+
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+ return 0;
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+}
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+
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+/*----------------------Backlight Control-------------------------*/
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+
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+static void enable_backlight_ctrl(struct acx565akm_device *md, int enable)
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+{
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+ u16 ctrl;
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+
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+ acx565akm_read(md, MIPID_CMD_READ_CTRL_DISP, (u8 *)&ctrl, 1);
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+ if (enable) {
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+ ctrl |= CTRL_DISP_BRIGHTNESS_CTRL_ON |
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+ CTRL_DISP_BACKLIGHT_ON;
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+ } else {
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+ ctrl &= ~(CTRL_DISP_BRIGHTNESS_CTRL_ON |
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+ CTRL_DISP_BACKLIGHT_ON);
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+ }
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+
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+ ctrl |= 1 << 8;
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+ acx565akm_write(md, MIPID_CMD_WRITE_CTRL_DISP, (u8 *)&ctrl, 2);
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+}
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+
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+static void set_cabc_mode(struct acx565akm_device *md, unsigned mode)
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+{
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+ u16 cabc_ctrl;
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+
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+ md->cabc_mode = mode;
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+ if (!md->enabled)
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+ return;
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+ cabc_ctrl = 0;
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+ acx565akm_read(md, MIPID_CMD_READ_CABC, (u8 *)&cabc_ctrl, 1);
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+ cabc_ctrl &= ~3;
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+ cabc_ctrl |= (1 << 8) | (mode & 3);
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+ acx565akm_write(md, MIPID_CMD_WRITE_CABC, (u8 *)&cabc_ctrl, 2);
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+}
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+
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+static unsigned get_cabc_mode(struct acx565akm_device *md)
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+{
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+ return md->cabc_mode;
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+}
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+
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+static unsigned get_hw_cabc_mode(struct acx565akm_device *md)
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+{
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+ u8 cabc_ctrl;
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+
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+ acx565akm_read(md, MIPID_CMD_READ_CABC, &cabc_ctrl, 1);
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+ return cabc_ctrl & 3;
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+}
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+
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+static void acx565akm_set_brightness(struct acx565akm_device *md, int level)
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+{
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+ int bv;
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+
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+ bv = level | (1 << 8);
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+ acx565akm_write(md, MIPID_CMD_WRITE_DISP_BRIGHTNESS, (u8 *)&bv, 2);
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+
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+ if (level)
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+ enable_backlight_ctrl(md, 1);
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+ else
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+ enable_backlight_ctrl(md, 0);
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+}
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+
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+static int acx565akm_get_actual_brightness(struct acx565akm_device *md)
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+{
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+ u8 bv;
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+
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+ acx565akm_read(md, MIPID_CMD_READ_DISP_BRIGHTNESS, &bv, 1);
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+
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+ return bv;
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+}
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+
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+
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+static int acx565akm_bl_update_status(struct backlight_device *dev)
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+{
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+ struct acx565akm_device *md = dev_get_drvdata(&dev->dev);
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+ int r;
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+ int level;
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+
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+ dev_dbg(&md->spi->dev, "%s\n", __func__);
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+
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+ mutex_lock(&md->mutex);
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+
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+ if (dev->props.fb_blank == FB_BLANK_UNBLANK &&
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+ dev->props.power == FB_BLANK_UNBLANK)
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+ level = dev->props.brightness;
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+ else
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+ level = 0;
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+
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+ r = 0;
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+ if (md->has_bc)
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+ acx565akm_set_brightness(md, level);
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+ else if (md->dssdev->set_backlight)
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+ r = md->dssdev->set_backlight(md->dssdev, level);
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+ else
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+ r = -ENODEV;
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+
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+ mutex_unlock(&md->mutex);
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+
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+ return r;
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+}
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+
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+static int acx565akm_bl_get_intensity(struct backlight_device *dev)
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+{
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+ struct acx565akm_device *md = dev_get_drvdata(&dev->dev);
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+
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+ dev_dbg(&dev->dev, "%s\n", __func__);
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+
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+ if (!md->has_bc && md->dssdev->set_backlight == NULL)
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+ return -ENODEV;
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+
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+ if (dev->props.fb_blank == FB_BLANK_UNBLANK &&
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+ dev->props.power == FB_BLANK_UNBLANK) {
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+ if (md->has_bc)
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+ return acx565akm_get_actual_brightness(md);
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+ else
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+ return dev->props.brightness;
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+ }
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+
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+ return 0;
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+}
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+
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+static struct backlight_ops acx565akm_bl_ops = {
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+ .get_brightness = acx565akm_bl_get_intensity,
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+ .update_status = acx565akm_bl_update_status,
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+};
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+
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+/*--------------------Auto Brightness control via Sysfs---------------------*/
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+
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+static const char *cabc_modes[] = {
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+ "off", /* always used when CABC is not supported */
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+ "ui",
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+ "still-image",
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+ "moving-image",
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+};
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+
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+static ssize_t show_cabc_mode(struct device *dev,
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+ struct device_attribute *attr,
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+ char *buf)
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+{
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+ struct acx565akm_device *md = dev_get_drvdata(dev);
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+ const char *mode_str;
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+ int mode;
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+ int len;
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+
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+ if (!md->has_cabc)
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+ mode = 0;
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+ else
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+ mode = get_cabc_mode(md);
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+ mode_str = "unknown";
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+ if (mode >= 0 && mode < ARRAY_SIZE(cabc_modes))
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+ mode_str = cabc_modes[mode];
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+ len = snprintf(buf, PAGE_SIZE, "%s\n", mode_str);
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+
|
|
+ return len < PAGE_SIZE - 1 ? len : PAGE_SIZE - 1;
|
|
+}
|
|
+
|
|
+static ssize_t store_cabc_mode(struct device *dev,
|
|
+ struct device_attribute *attr,
|
|
+ const char *buf, size_t count)
|
|
+{
|
|
+ struct acx565akm_device *md = dev_get_drvdata(dev);
|
|
+ int i;
|
|
+
|
|
+ for (i = 0; i < ARRAY_SIZE(cabc_modes); i++) {
|
|
+ const char *mode_str = cabc_modes[i];
|
|
+ int cmp_len = strlen(mode_str);
|
|
+
|
|
+ if (count > 0 && buf[count - 1] == '\n')
|
|
+ count--;
|
|
+ if (count != cmp_len)
|
|
+ continue;
|
|
+
|
|
+ if (strncmp(buf, mode_str, cmp_len) == 0)
|
|
+ break;
|
|
+ }
|
|
+
|
|
+ if (i == ARRAY_SIZE(cabc_modes))
|
|
+ return -EINVAL;
|
|
+
|
|
+ if (!md->has_cabc && i != 0)
|
|
+ return -EINVAL;
|
|
+
|
|
+ mutex_lock(&md->mutex);
|
|
+ set_cabc_mode(md, i);
|
|
+ mutex_unlock(&md->mutex);
|
|
+
|
|
+ return count;
|
|
+}
|
|
+
|
|
+static ssize_t show_cabc_available_modes(struct device *dev,
|
|
+ struct device_attribute *attr,
|
|
+ char *buf)
|
|
+{
|
|
+ struct acx565akm_device *md = dev_get_drvdata(dev);
|
|
+ int len;
|
|
+ int i;
|
|
+
|
|
+ if (!md->has_cabc)
|
|
+ return snprintf(buf, PAGE_SIZE, "%s\n", cabc_modes[0]);
|
|
+
|
|
+ for (i = 0, len = 0;
|
|
+ len < PAGE_SIZE && i < ARRAY_SIZE(cabc_modes); i++)
|
|
+ len += snprintf(&buf[len], PAGE_SIZE - len, "%s%s%s",
|
|
+ i ? " " : "", cabc_modes[i],
|
|
+ i == ARRAY_SIZE(cabc_modes) - 1 ? "\n" : "");
|
|
+
|
|
+ return len < PAGE_SIZE ? len : PAGE_SIZE - 1;
|
|
+}
|
|
+
|
|
+static DEVICE_ATTR(cabc_mode, S_IRUGO | S_IWUSR,
|
|
+ show_cabc_mode, store_cabc_mode);
|
|
+static DEVICE_ATTR(cabc_available_modes, S_IRUGO,
|
|
+ show_cabc_available_modes, NULL);
|
|
+
|
|
+static struct attribute *bldev_attrs[] = {
|
|
+ &dev_attr_cabc_mode.attr,
|
|
+ &dev_attr_cabc_available_modes.attr,
|
|
+ NULL,
|
|
+};
|
|
+
|
|
+static struct attribute_group bldev_attr_group = {
|
|
+ .attrs = bldev_attrs,
|
|
+};
|
|
+
|
|
+/*---------------------------ACX Panel----------------------------*/
|
|
+
|
|
+static struct omap_video_timings acx_panel_timings = {
|
|
+ .x_res = 800,
|
|
+ .y_res = 480,
|
|
+ .pixel_clock = 24000,
|
|
+ .hfp = 28,
|
|
+ .hsw = 4,
|
|
+ .hbp = 24,
|
|
+ .vfp = 3,
|
|
+ .vsw = 3,
|
|
+ .vbp = 4,
|
|
+};
|
|
+
|
|
+static int acx_panel_probe(struct omap_dss_device *dssdev)
|
|
+{
|
|
+ int r;
|
|
+ struct acx565akm_device *md = &acx_dev;
|
|
+ struct backlight_device *bldev;
|
|
+ int max_brightness, brightness;
|
|
+
|
|
+ dev_dbg(&dssdev->dev, "%s\n", __func__);
|
|
+ dssdev->panel.config = OMAP_DSS_LCD_TFT | OMAP_DSS_LCD_IVS |
|
|
+ OMAP_DSS_LCD_IHS;
|
|
+ /* FIXME AC bias ? */
|
|
+ dssdev->panel.timings = acx_panel_timings;
|
|
+ dssdev->panel.recommended_bpp = 16;
|
|
+
|
|
+ if (dssdev->platform_enable)
|
|
+ dssdev->platform_enable(dssdev);
|
|
+ /*
|
|
+ * After reset we have to wait 5 msec before the first
|
|
+ * command can be sent.
|
|
+ */
|
|
+ msleep(5);
|
|
+
|
|
+ md->enabled = panel_enabled(md);
|
|
+
|
|
+ r = panel_detect(md);
|
|
+ if (r) {
|
|
+ dev_err(&dssdev->dev, "%s panel detect error\n", __func__);
|
|
+ if (!md->enabled && dssdev->platform_disable)
|
|
+ dssdev->platform_disable(dssdev);
|
|
+ return r;
|
|
+ }
|
|
+
|
|
+ mutex_lock(&acx_dev.mutex);
|
|
+ acx_dev.dssdev = dssdev;
|
|
+ mutex_unlock(&acx_dev.mutex);
|
|
+
|
|
+ if (!md->enabled) {
|
|
+ if (dssdev->platform_disable)
|
|
+ dssdev->platform_disable(dssdev);
|
|
+ }
|
|
+
|
|
+ /*------- Backlight control --------*/
|
|
+
|
|
+ bldev = backlight_device_register("acx565akm", &md->spi->dev,
|
|
+ md, &acx565akm_bl_ops);
|
|
+ md->bl_dev = bldev;
|
|
+ if (md->has_cabc) {
|
|
+ r = sysfs_create_group(&bldev->dev.kobj, &bldev_attr_group);
|
|
+ if (r) {
|
|
+ dev_err(&bldev->dev,
|
|
+ "%s failed to create sysfs files\n", __func__);
|
|
+ backlight_device_unregister(bldev);
|
|
+ return r;
|
|
+ }
|
|
+ md->cabc_mode = get_hw_cabc_mode(md);
|
|
+ }
|
|
+
|
|
+ bldev->props.fb_blank = FB_BLANK_UNBLANK;
|
|
+ bldev->props.power = FB_BLANK_UNBLANK;
|
|
+
|
|
+ if (md->has_bc)
|
|
+ max_brightness = 255;
|
|
+ else
|
|
+ max_brightness = dssdev->max_backlight_level;
|
|
+
|
|
+ if (md->has_bc)
|
|
+ brightness = acx565akm_get_actual_brightness(md);
|
|
+ else if (dssdev->get_backlight)
|
|
+ brightness = dssdev->get_backlight(dssdev);
|
|
+ else
|
|
+ brightness = 0;
|
|
+
|
|
+ bldev->props.max_brightness = max_brightness;
|
|
+ bldev->props.brightness = brightness;
|
|
+
|
|
+ acx565akm_bl_update_status(bldev);
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+static void acx_panel_remove(struct omap_dss_device *dssdev)
|
|
+{
|
|
+ struct acx565akm_device *md = &acx_dev;
|
|
+
|
|
+ dev_dbg(&dssdev->dev, "%s\n", __func__);
|
|
+ sysfs_remove_group(&md->bl_dev->dev.kobj, &bldev_attr_group);
|
|
+ backlight_device_unregister(md->bl_dev);
|
|
+ mutex_lock(&acx_dev.mutex);
|
|
+ acx_dev.dssdev = NULL;
|
|
+ mutex_unlock(&acx_dev.mutex);
|
|
+}
|
|
+
|
|
+static int acx_panel_power_on(struct omap_dss_device *dssdev)
|
|
+{
|
|
+ struct acx565akm_device *md = &acx_dev;
|
|
+ int r;
|
|
+
|
|
+ dev_dbg(&dssdev->dev, "%s\n", __func__);
|
|
+
|
|
+ mutex_lock(&md->mutex);
|
|
+
|
|
+ if (dssdev->platform_enable) {
|
|
+ r = dssdev->platform_enable(dssdev);
|
|
+ if (r)
|
|
+ return r;
|
|
+ }
|
|
+
|
|
+ if (md->enabled) {
|
|
+ dev_dbg(&md->spi->dev, "panel already enabled\n");
|
|
+ mutex_unlock(&md->mutex);
|
|
+ return 0;
|
|
+ }
|
|
+
|
|
+ /*
|
|
+ * We have to meet all the following delay requirements:
|
|
+ * 1. tRW: reset pulse width 10usec (7.12.1)
|
|
+ * 2. tRT: reset cancel time 5msec (7.12.1)
|
|
+ * 3. Providing PCLK,HS,VS signals for 2 frames = ~50msec worst
|
|
+ * case (7.6.2)
|
|
+ * 4. 120msec before the sleep out command (7.12.1)
|
|
+ */
|
|
+ msleep(120);
|
|
+
|
|
+ set_sleep_mode(md, 0);
|
|
+ md->enabled = 1;
|
|
+
|
|
+ /* 5msec between sleep out and the next command. (8.2.16) */
|
|
+ msleep(5);
|
|
+ set_display_state(md, 1);
|
|
+ set_cabc_mode(md, md->cabc_mode);
|
|
+
|
|
+ mutex_unlock(&md->mutex);
|
|
+
|
|
+ return acx565akm_bl_update_status(md->bl_dev);
|
|
+}
|
|
+
|
|
+static void acx_panel_power_off(struct omap_dss_device *dssdev)
|
|
+{
|
|
+ struct acx565akm_device *md = &acx_dev;
|
|
+
|
|
+ dev_dbg(&dssdev->dev, "%s\n", __func__);
|
|
+
|
|
+ mutex_lock(&md->mutex);
|
|
+
|
|
+ if (!md->enabled) {
|
|
+ mutex_unlock(&md->mutex);
|
|
+ return;
|
|
+ }
|
|
+ set_display_state(md, 0);
|
|
+ set_sleep_mode(md, 1);
|
|
+ md->enabled = 0;
|
|
+ /*
|
|
+ * We have to provide PCLK,HS,VS signals for 2 frames (worst case
|
|
+ * ~50msec) after sending the sleep in command and asserting the
|
|
+ * reset signal. We probably could assert the reset w/o the delay
|
|
+ * but we still delay to avoid possible artifacts. (7.6.1)
|
|
+ */
|
|
+ msleep(50);
|
|
+
|
|
+ if (dssdev->platform_disable)
|
|
+ dssdev->platform_disable(dssdev);
|
|
+
|
|
+ mutex_unlock(&md->mutex);
|
|
+}
|
|
+
|
|
+static int acx_panel_enable(struct omap_dss_device *dssdev)
|
|
+{
|
|
+ int r;
|
|
+
|
|
+ dev_dbg(&dssdev->dev, "%s\n", __func__);
|
|
+ r = acx_panel_power_on(dssdev);
|
|
+
|
|
+ if (r)
|
|
+ return r;
|
|
+
|
|
+ dssdev->state = OMAP_DSS_DISPLAY_ACTIVE;
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+static void acx_panel_disable(struct omap_dss_device *dssdev)
|
|
+{
|
|
+ dev_dbg(&dssdev->dev, "%s\n", __func__);
|
|
+ acx_panel_power_off(dssdev);
|
|
+ dssdev->state = OMAP_DSS_DISPLAY_DISABLED;
|
|
+}
|
|
+
|
|
+static int acx_panel_suspend(struct omap_dss_device *dssdev)
|
|
+{
|
|
+ dev_dbg(&dssdev->dev, "%s\n", __func__);
|
|
+ acx_panel_power_off(dssdev);
|
|
+ dssdev->state = OMAP_DSS_DISPLAY_SUSPENDED;
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+static int acx_panel_resume(struct omap_dss_device *dssdev)
|
|
+{
|
|
+ int r;
|
|
+
|
|
+ dev_dbg(&dssdev->dev, "%s\n", __func__);
|
|
+ r = acx_panel_power_on(dssdev);
|
|
+ if (r)
|
|
+ return r;
|
|
+
|
|
+ dssdev->state = OMAP_DSS_DISPLAY_ACTIVE;
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+static struct omap_dss_driver acx_panel_driver = {
|
|
+ .probe = acx_panel_probe,
|
|
+ .remove = acx_panel_remove,
|
|
+
|
|
+ .enable = acx_panel_enable,
|
|
+ .disable = acx_panel_disable,
|
|
+ .suspend = acx_panel_suspend,
|
|
+ .resume = acx_panel_resume,
|
|
+
|
|
+ .driver = {
|
|
+ .name = "panel-acx565akm",
|
|
+ .owner = THIS_MODULE,
|
|
+ },
|
|
+};
|
|
+
|
|
+/*--------------------SPI probe-------------------------*/
|
|
+
|
|
+static int acx565akm_spi_probe(struct spi_device *spi)
|
|
+{
|
|
+ struct acx565akm_device *md = &acx_dev;
|
|
+
|
|
+ dev_dbg(&spi->dev, "%s\n", __func__);
|
|
+
|
|
+ spi->mode = SPI_MODE_3;
|
|
+ md->spi = spi;
|
|
+ mutex_init(&md->mutex);
|
|
+ dev_set_drvdata(&spi->dev, md);
|
|
+
|
|
+ omap_dss_register_driver(&acx_panel_driver);
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+static int acx565akm_spi_remove(struct spi_device *spi)
|
|
+{
|
|
+ struct acx565akm_device *md = dev_get_drvdata(&spi->dev);
|
|
+
|
|
+ dev_dbg(&md->spi->dev, "%s\n", __func__);
|
|
+ omap_dss_unregister_driver(&acx_panel_driver);
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+static struct spi_driver acx565akm_spi_driver = {
|
|
+ .driver = {
|
|
+ .name = "acx565akm",
|
|
+ .bus = &spi_bus_type,
|
|
+ .owner = THIS_MODULE,
|
|
+ },
|
|
+ .probe = acx565akm_spi_probe,
|
|
+ .remove = __devexit_p(acx565akm_spi_remove),
|
|
+};
|
|
+
|
|
+static int __init acx565akm_init(void)
|
|
+{
|
|
+ return spi_register_driver(&acx565akm_spi_driver);
|
|
+}
|
|
+
|
|
+static void __exit acx565akm_exit(void)
|
|
+{
|
|
+ spi_unregister_driver(&acx565akm_spi_driver);
|
|
+}
|
|
+
|
|
+module_init(acx565akm_init);
|
|
+module_exit(acx565akm_exit);
|
|
+
|
|
+MODULE_AUTHOR("Nokia Corporation");
|
|
+MODULE_DESCRIPTION("acx565akm LCD Driver");
|
|
+MODULE_LICENSE("GPL");
|
|
--
|
|
1.6.0.4
|
|
|