[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / staging / msm / lcdc.c

/* Copyright (c) 2008-2009, Code Aurora Forum. 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 version 2 and
 * only 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, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
 * 02110-1301, USA.
 */

#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/time.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/spinlock.h>
#include <linux/delay.h>
#include <mach/hardware.h>
#include <linux/io.h>

#include <asm/system.h>
#include <asm/mach-types.h>
#include <linux/semaphore.h>
#include <linux/uaccess.h>
#include <linux/clk.h>
#include <linux/platform_device.h>
#include <linux/pm_qos_params.h>

#include "msm_fb.h"

static int lcdc_probe(struct platform_device *pdev);
static int lcdc_remove(struct platform_device *pdev);

static int lcdc_off(struct platform_device *pdev);
static int lcdc_on(struct platform_device *pdev);

static struct platform_device *pdev_list[MSM_FB_MAX_DEV_LIST];
static int pdev_list_cnt;

static struct clk *mdp_lcdc_pclk_clk;
static struct clk *mdp_lcdc_pad_pclk_clk;

int mdp_lcdc_pclk_clk_rate;
int mdp_lcdc_pad_pclk_clk_rate;

static struct platform_driver lcdc_driver = {
	.probe = lcdc_probe,
	.remove = lcdc_remove,
	.suspend = NULL,
	.resume = NULL,
	.shutdown = NULL,
	.driver = {
		   .name = "lcdc",
		   },
};

static struct lcdc_platform_data *lcdc_pdata;

static int lcdc_off(struct platform_device *pdev)
{
	int ret = 0;

	ret = panel_next_off(pdev);

	clk_disable(mdp_lcdc_pclk_clk);
	clk_disable(mdp_lcdc_pad_pclk_clk);

	if (lcdc_pdata && lcdc_pdata->lcdc_power_save)
		lcdc_pdata->lcdc_power_save(0);

	if (lcdc_pdata && lcdc_pdata->lcdc_gpio_config)
		ret = lcdc_pdata->lcdc_gpio_config(0);

//	pm_qos_update_requirement(PM_QOS_SYSTEM_BUS_FREQ , "lcdc",
//					PM_QOS_DEFAULT_VALUE);

	return ret;
}

static int lcdc_on(struct platform_device *pdev)
{
	int ret = 0;
	struct msm_fb_data_type *mfd;
	unsigned long panel_pixclock_freq , pm_qos_freq;

	mfd = platform_get_drvdata(pdev);
	panel_pixclock_freq = mfd->fbi->var.pixclock;

	if (panel_pixclock_freq > 58000000)
		/* pm_qos_freq should be in Khz */
		pm_qos_freq = panel_pixclock_freq / 1000 ;
	else
		pm_qos_freq = 58000;

//	pm_qos_update_requirement(PM_QOS_SYSTEM_BUS_FREQ , "lcdc",
//						pm_qos_freq);
	mfd = platform_get_drvdata(pdev);

	clk_enable(mdp_lcdc_pclk_clk);
	clk_enable(mdp_lcdc_pad_pclk_clk);

	if (lcdc_pdata && lcdc_pdata->lcdc_power_save)
		lcdc_pdata->lcdc_power_save(1);
	if (lcdc_pdata && lcdc_pdata->lcdc_gpio_config)
		ret = lcdc_pdata->lcdc_gpio_config(1);

	clk_set_rate(mdp_lcdc_pclk_clk, mfd->fbi->var.pixclock);
	clk_set_rate(mdp_lcdc_pad_pclk_clk, mfd->fbi->var.pixclock);
	mdp_lcdc_pclk_clk_rate = clk_get_rate(mdp_lcdc_pclk_clk);
	mdp_lcdc_pad_pclk_clk_rate = clk_get_rate(mdp_lcdc_pad_pclk_clk);

	ret = panel_next_on(pdev);
	return ret;
}

static int lcdc_probe(struct platform_device *pdev)
{
	struct msm_fb_data_type *mfd;
	struct fb_info *fbi;
	struct platform_device *mdp_dev = NULL;
	struct msm_fb_panel_data *pdata = NULL;
	int rc;

	if (pdev->id == 0) {
		lcdc_pdata = pdev->dev.platform_data;
		return 0;
	}

	mfd = platform_get_drvdata(pdev);

	if (!mfd)
		return -ENODEV;

	if (mfd->key != MFD_KEY)
		return -EINVAL;

	if (pdev_list_cnt >= MSM_FB_MAX_DEV_LIST)
		return -ENOMEM;

	mdp_dev = platform_device_alloc("mdp", pdev->id);
	if (!mdp_dev)
		return -ENOMEM;

	/*
	 * link to the latest pdev
	 */
	mfd->pdev = mdp_dev;
	mfd->dest = DISPLAY_LCDC;

	/*
	 * alloc panel device data
	 */
	if (platform_device_add_data
	    (mdp_dev, pdev->dev.platform_data,
	     sizeof(struct msm_fb_panel_data))) {
		printk(KERN_ERR "lcdc_probe: platform_device_add_data failed!\n");
		platform_device_put(mdp_dev);
		return -ENOMEM;
	}
	/*
	 * data chain
	 */
	pdata = (struct msm_fb_panel_data *)mdp_dev->dev.platform_data;
	pdata->on = lcdc_on;
	pdata->off = lcdc_off;
	pdata->next = pdev;

	/*
	 * get/set panel specific fb info
	 */
	mfd->panel_info = pdata->panel_info;
	mfd->fb_imgType = MDP_RGB_565;

	fbi = mfd->fbi;
	fbi->var.pixclock = mfd->panel_info.clk_rate;
	fbi->var.left_margin = mfd->panel_info.lcdc.h_back_porch;
	fbi->var.right_margin = mfd->panel_info.lcdc.h_front_porch;
	fbi->var.upper_margin = mfd->panel_info.lcdc.v_back_porch;
	fbi->var.lower_margin = mfd->panel_info.lcdc.v_front_porch;
	fbi->var.hsync_len = mfd->panel_info.lcdc.h_pulse_width;
	fbi->var.vsync_len = mfd->panel_info.lcdc.v_pulse_width;

	/*
	 * set driver data
	 */
	platform_set_drvdata(mdp_dev, mfd);

	/*
	 * register in mdp driver
	 */
	rc = platform_device_add(mdp_dev);
	if (rc)
		goto lcdc_probe_err;

	pdev_list[pdev_list_cnt++] = pdev;
		return 0;

lcdc_probe_err:
	platform_device_put(mdp_dev);
	return rc;
}

static int lcdc_remove(struct platform_device *pdev)
{
//	pm_qos_remove_requirement(PM_QOS_SYSTEM_BUS_FREQ , "lcdc");
	return 0;
}

static int lcdc_register_driver(void)
{
	return platform_driver_register(&lcdc_driver);
}

static int __init lcdc_driver_init(void)
{
	mdp_lcdc_pclk_clk = clk_get(NULL, "mdp_lcdc_pclk_clk");
	if (IS_ERR(mdp_lcdc_pclk_clk)) {
		printk(KERN_ERR "error: can't get mdp_lcdc_pclk_clk!\n");
		return IS_ERR(mdp_lcdc_pclk_clk);
	}
	mdp_lcdc_pad_pclk_clk = clk_get(NULL, "mdp_lcdc_pad_pclk_clk");
	if (IS_ERR(mdp_lcdc_pad_pclk_clk)) {
		printk(KERN_ERR "error: can't get mdp_lcdc_pad_pclk_clk!\n");
		return IS_ERR(mdp_lcdc_pad_pclk_clk);
	}
//	pm_qos_add_requirement(PM_QOS_SYSTEM_BUS_FREQ , "lcdc",
//				PM_QOS_DEFAULT_VALUE);
	return lcdc_register_driver();
}

module_init(lcdc_driver_init);
Commit	Line	Data
9d200153 SM	1	/* Copyright (c) 2008-2009, Code Aurora Forum. All rights reserved.
	2	*
	3	* This program is free software; you can redistribute it and/or modify
	4	* it under the terms of the GNU General Public License version 2 and
	5	* only version 2 as published by the Free Software Foundation.
	6	*
	7	* This program is distributed in the hope that it will be useful,
	8	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	9	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	10	* GNU General Public License for more details.
	11	*
	12	* You should have received a copy of the GNU General Public License
	13	* along with this program; if not, write to the Free Software
	14	* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
	15	* 02110-1301, USA.
	16	*/
	17
	18	#include <linux/module.h>
	19	#include <linux/kernel.h>
	20	#include <linux/sched.h>
	21	#include <linux/time.h>
	22	#include <linux/init.h>
	23	#include <linux/interrupt.h>
	24	#include <linux/spinlock.h>
	25	#include <linux/delay.h>
	26	#include <mach/hardware.h>
	27	#include <linux/io.h>
	28
	29	#include <asm/system.h>
	30	#include <asm/mach-types.h>
	31	#include <linux/semaphore.h>
	32	#include <linux/uaccess.h>
	33	#include <linux/clk.h>
	34	#include <linux/platform_device.h>
	35	#include <linux/pm_qos_params.h>
	36
	37	#include "msm_fb.h"
	38
	39	static int lcdc_probe(struct platform_device *pdev);
	40	static int lcdc_remove(struct platform_device *pdev);
	41
	42	static int lcdc_off(struct platform_device *pdev);
	43	static int lcdc_on(struct platform_device *pdev);
	44
	45	static struct platform_device *pdev_list[MSM_FB_MAX_DEV_LIST];
	46	static int pdev_list_cnt;
	47
	48	static struct clk *mdp_lcdc_pclk_clk;
	49	static struct clk *mdp_lcdc_pad_pclk_clk;
	50
	51	int mdp_lcdc_pclk_clk_rate;
	52	int mdp_lcdc_pad_pclk_clk_rate;
	53
	54	static struct platform_driver lcdc_driver = {
	55	.probe = lcdc_probe,
	56	.remove = lcdc_remove,
	57	.suspend = NULL,
	58	.resume = NULL,
	59	.shutdown = NULL,
	60	.driver = {
	61	.name = "lcdc",
	62	},
	63	};
	64
65	static struct lcdc_platform_data *lcdc_pdata;
66
67	static int lcdc_off(struct platform_device *pdev)
68	{
69	int ret = 0;
70
71	ret = panel_next_off(pdev);
72
73	clk_disable(mdp_lcdc_pclk_clk);
74	clk_disable(mdp_lcdc_pad_pclk_clk);
75
76	if (lcdc_pdata && lcdc_pdata->lcdc_power_save)
77	lcdc_pdata->lcdc_power_save(0);
78
79	if (lcdc_pdata && lcdc_pdata->lcdc_gpio_config)
80	ret = lcdc_pdata->lcdc_gpio_config(0);
81
82	// pm_qos_update_requirement(PM_QOS_SYSTEM_BUS_FREQ , "lcdc",
83	// PM_QOS_DEFAULT_VALUE);
84
85	return ret;
86	}
87
88	static int lcdc_on(struct platform_device *pdev)
89	{
90	int ret = 0;
91	struct msm_fb_data_type *mfd;
92	unsigned long panel_pixclock_freq , pm_qos_freq;
93
94	mfd = platform_get_drvdata(pdev);
95	panel_pixclock_freq = mfd->fbi->var.pixclock;
96
97	if (panel_pixclock_freq > 58000000)
98	/* pm_qos_freq should be in Khz */
99	pm_qos_freq = panel_pixclock_freq / 1000 ;
100	else
101	pm_qos_freq = 58000;
102
103	// pm_qos_update_requirement(PM_QOS_SYSTEM_BUS_FREQ , "lcdc",
104	// pm_qos_freq);
105	mfd = platform_get_drvdata(pdev);
106
107	clk_enable(mdp_lcdc_pclk_clk);
108	clk_enable(mdp_lcdc_pad_pclk_clk);
109
110	if (lcdc_pdata && lcdc_pdata->lcdc_power_save)
111	lcdc_pdata->lcdc_power_save(1);
112	if (lcdc_pdata && lcdc_pdata->lcdc_gpio_config)
113	ret = lcdc_pdata->lcdc_gpio_config(1);
114
115	clk_set_rate(mdp_lcdc_pclk_clk, mfd->fbi->var.pixclock);
116	clk_set_rate(mdp_lcdc_pad_pclk_clk, mfd->fbi->var.pixclock);
117	mdp_lcdc_pclk_clk_rate = clk_get_rate(mdp_lcdc_pclk_clk);
118	mdp_lcdc_pad_pclk_clk_rate = clk_get_rate(mdp_lcdc_pad_pclk_clk);
119
120	ret = panel_next_on(pdev);
121	return ret;
122	}
123
124	static int lcdc_probe(struct platform_device *pdev)
125	{
126	struct msm_fb_data_type *mfd;
127	struct fb_info *fbi;
128	struct platform_device *mdp_dev = NULL;
129	struct msm_fb_panel_data *pdata = NULL;
130	int rc;
131
132	if (pdev->id == 0) {
133	lcdc_pdata = pdev->dev.platform_data;
134	return 0;
135	}
136
137	mfd = platform_get_drvdata(pdev);
138
139	if (!mfd)
140	return -ENODEV;
141
142	if (mfd->key != MFD_KEY)
143	return -EINVAL;
144
145	if (pdev_list_cnt >= MSM_FB_MAX_DEV_LIST)
146	return -ENOMEM;
147
148	mdp_dev = platform_device_alloc("mdp", pdev->id);
149	if (!mdp_dev)
150	return -ENOMEM;
151
152	/*
153	* link to the latest pdev
154	*/
155	mfd->pdev = mdp_dev;
156	mfd->dest = DISPLAY_LCDC;
157
158	/*
159	* alloc panel device data
160	*/
161	if (platform_device_add_data
162	(mdp_dev, pdev->dev.platform_data,
163	sizeof(struct msm_fb_panel_data))) {
164	printk(KERN_ERR "lcdc_probe: platform_device_add_data failed!\n");
165	platform_device_put(mdp_dev);
166	return -ENOMEM;
167	}
168	/*
169	* data chain
170	*/
171	pdata = (struct msm_fb_panel_data *)mdp_dev->dev.platform_data;
172	pdata->on = lcdc_on;
173	pdata->off = lcdc_off;
174	pdata->next = pdev;
175
176	/*
177	* get/set panel specific fb info
178	*/
179	mfd->panel_info = pdata->panel_info;
180	mfd->fb_imgType = MDP_RGB_565;
181
182	fbi = mfd->fbi;
183	fbi->var.pixclock = mfd->panel_info.clk_rate;
184	fbi->var.left_margin = mfd->panel_info.lcdc.h_back_porch;
185	fbi->var.right_margin = mfd->panel_info.lcdc.h_front_porch;
186	fbi->var.upper_margin = mfd->panel_info.lcdc.v_back_porch;
187	fbi->var.lower_margin = mfd->panel_info.lcdc.v_front_porch;
188	fbi->var.hsync_len = mfd->panel_info.lcdc.h_pulse_width;
189	fbi->var.vsync_len = mfd->panel_info.lcdc.v_pulse_width;
190
191	/*
192	* set driver data
193	*/
194	platform_set_drvdata(mdp_dev, mfd);
195
196	/*
197	* register in mdp driver
198	*/
199	rc = platform_device_add(mdp_dev);
200	if (rc)
201	goto lcdc_probe_err;
202
203	pdev_list[pdev_list_cnt++] = pdev;
204	return 0;
205
206	lcdc_probe_err:
207	platform_device_put(mdp_dev);
208	return rc;
209	}
210
211	static int lcdc_remove(struct platform_device *pdev)
212	{
213	// pm_qos_remove_requirement(PM_QOS_SYSTEM_BUS_FREQ , "lcdc");
214	return 0;
215	}
216
217	static int lcdc_register_driver(void)
218	{
219	return platform_driver_register(&lcdc_driver);
220	}
221
222	static int __init lcdc_driver_init(void)
223	{
224	mdp_lcdc_pclk_clk = clk_get(NULL, "mdp_lcdc_pclk_clk");
225	if (IS_ERR(mdp_lcdc_pclk_clk)) {
226	printk(KERN_ERR "error: can't get mdp_lcdc_pclk_clk!\n");
227	return IS_ERR(mdp_lcdc_pclk_clk);
228	}
229	mdp_lcdc_pad_pclk_clk = clk_get(NULL, "mdp_lcdc_pad_pclk_clk");
230	if (IS_ERR(mdp_lcdc_pad_pclk_clk)) {
231	printk(KERN_ERR "error: can't get mdp_lcdc_pad_pclk_clk!\n");
232	return IS_ERR(mdp_lcdc_pad_pclk_clk);
233	}
234	// pm_qos_add_requirement(PM_QOS_SYSTEM_BUS_FREQ , "lcdc",
235	// PM_QOS_DEFAULT_VALUE);
236	return lcdc_register_driver();
237	}
238
239	module_init(lcdc_driver_init);