new file mode 100644
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+/*
+ * linux/drivers/video/omap2/dss/hdmi.c
+ *
+ * Copyright (C) 2009 Texas Instruments
+ * Author: Yong Zhi
+ *
+ * HDMI settings from TI's DSS driver
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program. If not, see <http://www.gnu.org/licenses/>.
+ * History:
+ * Mythripk <mythripk@ti.com> -Redesigned on the driver to adhere to DSS2 model.
+ * -GPIO calls for HDMI.
+ *
+ *
+ */
+
+#define DSS_SUBSYS_NAME "HDMI"
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/clk.h>
+#include <linux/err.h>
+#include <linux/io.h>
+#include <linux/interrupt.h>
+#include <linux/mutex.h>
+#include <linux/completion.h>
+#include <linux/delay.h>
+#include <linux/string.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+#include <plat/display.h>
+#include <plat/cpu.h>
+#include <plat/gpio.h>
+
+#include "dss.h"
+
+static struct {
+ struct mutex lock;
+} hdmi;
+
+#define FLD_GET(val, start, end) (((val) & FLD_MASK(start, end)) >> (end))
+#define FLD_MOD(orig, val, start, end) \
+ (((orig) & ~FLD_MASK(start, end)) | FLD_VAL(val, start, end))
+
+
+#define CPF 2
+
+int hdmi_init_display(struct omap_dss_device *dssdev)
+{
+ DSSDBG("init_display\n");
+
+ return 0;
+}
+
+void compute_hdmi_pll(int clkin, int phy,
+ int n, struct hdmi_pll_info *pi)
+{
+ int refclk;
+ u32 temp, mf;
+
+ if (clkin > 3200) /* 32 mHz */
+ refclk = clkin / (2 * (n + 1));
+ else
+ refclk = clkin / (n + 1);
+
+ temp = phy * 100/(CPF * refclk);
+
+ pi->regn = n;
+ pi->regm = temp/100;
+ pi->regm2 = 1;
+
+ mf = (phy - pi->regm * CPF * refclk) * 262144;
+ pi->regmf = mf/(CPF * refclk);
+
+ if (phy > 1000 * 100) {
+ pi->regm4 = phy / 10000;
+ pi->dcofreq = 1;
+ pi->regsd = ((pi->regm * 384)/((n + 1) * 250) + 5)/10;
+ } else {
+ pi->regm4 = 1;
+ pi->dcofreq = 0;
+ pi->regsd = 0;
+ }
+
+ DSSDBG("M = %d Mf = %d, m4= %d\n", pi->regm, pi->regmf, pi->regm4);
+ DSSDBG("range = %d sd = %d\n", pi->dcofreq, pi->regsd);
+}
+
+
+static void hdmi_enable_clocks(int enable)
+{
+ if (enable)
+ dss_clk_enable(DSS_CLK_ICK | DSS_CLK_FCK1 | DSS_CLK_54M |
+ DSS_CLK_96M);
+ else
+ dss_clk_disable(DSS_CLK_ICK | DSS_CLK_FCK1 | DSS_CLK_54M |
+ DSS_CLK_96M);
+}
+
+static irqreturn_t hdmi_irq_handler(int irq, void *arg)
+{
+ DSSDBG("Will be used in future to handle HPD");
+ return IRQ_HANDLED;
+}
+
+int hdmi_init(struct platform_device *pdev, int code, int mode)
+{
+ int r = 0;
+ DSSDBG("Enter hdmi_init()\n");
+
+ mutex_init(&hdmi.lock);
+
+ r = request_irq(OMAP44XX_IRQ_DSS_HDMI, hdmi_irq_handler,
+ 0, "OMAP HDMI", (void *)0);
+
+ return 0;
+
+}
+
+void hdmi_exit(void)
+{
+ free_irq(OMAP44XX_IRQ_DSS_HDMI, NULL);
+
+}
+
+static int hdmi_power_on(struct omap_dss_device *dssdev)
+{
+ hdmi_enable_clocks(1);
+
+ dispc_enable_digit_out(0);
+
+ printk("poweron returns");
+
+ return 0;
+}
+
+int hdmi_dispc_setting(struct omap_dss_device *dssdev)
+{
+
+
+ /* these settings are independent of overlays */
+ dss_switch_tv_hdmi(1);
+
+ /* bypass TV gamma table*/
+ dispc_enable_gamma_table(0);
+
+ /* tv size */
+ dispc_set_digit_size(dssdev->panel.timings.x_res,
+ dssdev->panel.timings.y_res);
+
+
+ dispc_enable_digit_out(1);
+
+ return 0;
+}
+
+static void hdmi_power_off(struct omap_dss_device *dssdev)
+{
+
+ dispc_enable_digit_out(0);
+
+ if (dssdev->platform_disable)
+ dssdev->platform_disable(dssdev);
+
+
+ hdmi_enable_clocks(0);
+
+}
+
+int hdmi_enable_display(struct omap_dss_device *dssdev)
+{
+ int r = 0;
+ DSSDBG("ENTER hdmi_enable_display()\n");
+
+ mutex_lock(&hdmi.lock);
+
+ r = omap_dss_start_device(dssdev);
+ if (r) {
+ DSSDBG("failed to start device\n");
+ return r;
+ }
+
+ free_irq(OMAP44XX_IRQ_DSS_HDMI, NULL);
+
+ /* PAD0_HDMI_HPD_PAD1_HDMI_CEC */
+ omap_writel(0x01180118, 0x4A100098);
+ /* PAD0_HDMI_DDC_SCL_PAD1_HDMI_DDC_SDA */
+ omap_writel(0x01180118 , 0x4A10009C);
+ /* CONTROL_HDMI_TX_PHY */
+ omap_writel(0x10000000, 0x4A100610);
+
+ if (dssdev->platform_enable)
+ dssdev->platform_enable(dssdev);
+
+ r = hdmi_power_on(dssdev);
+ if (r) {
+ DSSERR("failed to power on device\n");
+ goto err;
+ }
+ r = request_irq(OMAP44XX_IRQ_DSS_HDMI, hdmi_irq_handler,
+ 0, "OMAP HDMI", (void *)0);
+
+
+err:
+ mutex_unlock(&hdmi.lock);
+ printk("enable display returns");
+ return r;
+
+}
+
+void hdmi_disable_display(struct omap_dss_device *dssdev)
+{
+ DSSDBG("Enter hdmi_disable_display()\n");
+
+ mutex_lock(&hdmi.lock);
+
+ omap_dss_stop_device(dssdev);
+
+ hdmi_power_off(dssdev);
+
+end:
+ mutex_unlock(&hdmi.lock);
+}
+
+int hdmi_display_suspend(struct omap_dss_device *dssdev)
+{
+ int r = 0;
+
+ DSSDBG("hdmi_display_suspend\n");
+ mutex_lock(&hdmi.lock);
+
+ omap_dss_stop_device(dssdev);
+
+ hdmi_power_off(dssdev);
+end:
+ mutex_unlock(&hdmi.lock);
+ return r;
+}
+
+int hdmi_display_resume(struct omap_dss_device *dssdev)
+{
+ int r = 0;
+
+ DSSDBG("hdmi_display_resume\n");
+ mutex_lock(&hdmi.lock);
+
+ /* the tv overlay manager is shared*/
+ r = omap_dss_start_device(dssdev);
+ if (r) {
+ DSSERR("failed to start device\n");
+ goto err;
+ }
+
+ /* PAD0_HDMI_HPD_PAD1_HDMI_CEC */
+ omap_writel(0x01180118, 0x4A100098);
+ /* PAD0_HDMI_DDC_SCL_PAD1_HDMI_DDC_SDA */
+ omap_writel(0x01180118 , 0x4A10009C);
+ /* CONTROL_HDMI_TX_PHY */
+ omap_writel(0x10000000, 0x4A100610);
+
+ if (dssdev->platform_enable)
+ dssdev->platform_enable(dssdev);
+
+ r = hdmi_power_on(dssdev);
+ if (r) {
+ DSSERR("failed to power on device\n");
+ goto err;
+ }
+
+err:
+ mutex_unlock(&hdmi.lock);
+
+ return r;
+}
+
+void hdmi_dump_regs(struct seq_file *s)
+{
+ DSSDBG("0x4a100060 x%x\n", omap_readl(0x4A100060));
+ DSSDBG("0x4A100088 x%x\n", omap_readl(0x4A100088));
+ DSSDBG("0x48055134 x%x\n", omap_readl(0x48055134));
+ DSSDBG("0x48055194 x%x\n", omap_readl(0x48055194));
+}