[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / staging / msm / mddi.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 <asm/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 "msm_fb.h"
#include "mddihosti.h"
#include "mddihost.h"
#include <mach/gpio.h>
#include <mach/clk.h>

static int mddi_probe(struct platform_device *pdev);
static int mddi_remove(struct platform_device *pdev);

static int mddi_off(struct platform_device *pdev);
static int mddi_on(struct platform_device *pdev);

static int mddi_suspend(struct platform_device *pdev, pm_message_t state);
static int mddi_resume(struct platform_device *pdev);

#ifdef CONFIG_HAS_EARLYSUSPEND
static void mddi_early_suspend(struct early_suspend *h);
static void mddi_early_resume(struct early_suspend *h);
#endif

static struct platform_device *pdev_list[MSM_FB_MAX_DEV_LIST];
static int pdev_list_cnt;
static struct clk *mddi_clk;
static struct clk *mddi_pclk;
static struct mddi_platform_data *mddi_pdata;

static struct platform_driver mddi_driver = {
	.probe = mddi_probe,
	.remove = mddi_remove,
#ifndef CONFIG_HAS_EARLYSUSPEND
#ifdef CONFIG_PM
	.suspend = mddi_suspend,
	.resume = mddi_resume,
#endif
#endif
	.suspend_late = NULL,
	.resume_early = NULL,
	.shutdown = NULL,
	.driver = {
		   .name = "mddi",
		   },
};

extern int int_mddi_pri_flag;

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

	ret = panel_next_off(pdev);

	if (mddi_pdata && mddi_pdata->mddi_power_save)
		mddi_pdata->mddi_power_save(0);

	return ret;
}

static int mddi_on(struct platform_device *pdev)
{
	int ret = 0;
	u32 clk_rate;
	struct msm_fb_data_type *mfd;

	mfd = platform_get_drvdata(pdev);

	if (mddi_pdata && mddi_pdata->mddi_power_save)
		mddi_pdata->mddi_power_save(1);

	clk_rate = mfd->fbi->var.pixclock;
	clk_rate = min(clk_rate, mfd->panel_info.clk_max);

	if (mddi_pdata &&
	    mddi_pdata->mddi_sel_clk &&
	    mddi_pdata->mddi_sel_clk(&clk_rate))
			printk(KERN_ERR
			  "%s: can't select mddi io clk targate rate = %d\n",
			  __func__, clk_rate);

	if (clk_set_min_rate(mddi_clk, clk_rate) < 0)
		printk(KERN_ERR "%s: clk_set_min_rate failed\n",
			__func__);

	ret = panel_next_on(pdev);

	return ret;
}

static int mddi_resource_initialized;

static int mddi_probe(struct platform_device *pdev)
{
	struct msm_fb_data_type *mfd;
	struct platform_device *mdp_dev = NULL;
	struct msm_fb_panel_data *pdata = NULL;
	int rc;
	resource_size_t size ;
	u32 clk_rate;

	if ((pdev->id == 0) && (pdev->num_resources >= 0)) {
		mddi_pdata = pdev->dev.platform_data;

		size =  resource_size(&pdev->resource[0]);
		msm_pmdh_base =  ioremap(pdev->resource[0].start, size);

		MSM_FB_INFO("primary mddi base phy_addr = 0x%x virt = 0x%x\n",
				pdev->resource[0].start, (int) msm_pmdh_base);

		if (unlikely(!msm_pmdh_base))
			return -ENOMEM;

		if (mddi_pdata && mddi_pdata->mddi_power_save)
			mddi_pdata->mddi_power_save(1);

		mddi_resource_initialized = 1;
		return 0;
	}

	if (!mddi_resource_initialized)
		return -EPERM;

	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_LCD;

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

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

	clk_rate = mfd->panel_info.clk_max;
	if (mddi_pdata &&
	    mddi_pdata->mddi_sel_clk &&
	    mddi_pdata->mddi_sel_clk(&clk_rate))
			printk(KERN_ERR
			  "%s: can't select mddi io clk targate rate = %d\n",
			  __func__, clk_rate);

	if (clk_set_max_rate(mddi_clk, clk_rate) < 0)
		printk(KERN_ERR "%s: clk_set_max_rate failed\n", __func__);
	mfd->panel_info.clk_rate = mfd->panel_info.clk_min;

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

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

	pdev_list[pdev_list_cnt++] = pdev;

#ifdef CONFIG_HAS_EARLYSUSPEND
	mfd->mddi_early_suspend.level = EARLY_SUSPEND_LEVEL_DISABLE_FB;
	mfd->mddi_early_suspend.suspend = mddi_early_suspend;
	mfd->mddi_early_suspend.resume = mddi_early_resume;
	register_early_suspend(&mfd->mddi_early_suspend);
#endif

	return 0;

mddi_probe_err:
	platform_device_put(mdp_dev);
	return rc;
}

static int mddi_pad_ctrl;
static int mddi_power_locked;
static int mddi_is_in_suspend;

void mddi_disable(int lock)
{
	mddi_host_type host_idx = MDDI_HOST_PRIM;

	if (mddi_power_locked)
		return;

	if (lock)
		mddi_power_locked = 1;

	if (mddi_host_timer.function)
		del_timer_sync(&mddi_host_timer);

	mddi_pad_ctrl = mddi_host_reg_in(PAD_CTL);
	mddi_host_reg_out(PAD_CTL, 0x0);

	if (clk_set_min_rate(mddi_clk, 0) < 0)
		printk(KERN_ERR "%s: clk_set_min_rate failed\n", __func__);

	clk_disable(mddi_clk);
	if (mddi_pclk)
		clk_disable(mddi_pclk);
	disable_irq(INT_MDDI_PRI);

	if (mddi_pdata && mddi_pdata->mddi_power_save)
		mddi_pdata->mddi_power_save(0);
}

static int mddi_suspend(struct platform_device *pdev, pm_message_t state)
{
	if (mddi_is_in_suspend)
		return 0;

	mddi_is_in_suspend = 1;
	mddi_disable(0);
	return 0;
}

static int mddi_resume(struct platform_device *pdev)
{
	mddi_host_type host_idx = MDDI_HOST_PRIM;

	if (!mddi_is_in_suspend)
		return 0;

	mddi_is_in_suspend = 0;

	if (mddi_power_locked)
		return 0;

	enable_irq(INT_MDDI_PRI);
	clk_enable(mddi_clk);
	if (mddi_pclk)
		clk_enable(mddi_pclk);
	mddi_host_reg_out(PAD_CTL, mddi_pad_ctrl);

	if (mddi_host_timer.function)
		mddi_host_timer_service(0);

	return 0;
}

#ifdef CONFIG_HAS_EARLYSUSPEND
static void mddi_early_suspend(struct early_suspend *h)
{
	pm_message_t state;
	struct msm_fb_data_type *mfd = container_of(h, struct msm_fb_data_type,
							mddi_early_suspend);

	state.event = PM_EVENT_SUSPEND;
	mddi_suspend(mfd->pdev, state);
}

static void mddi_early_resume(struct early_suspend *h)
{
	struct msm_fb_data_type *mfd = container_of(h, struct msm_fb_data_type,
							mddi_early_suspend);
	mddi_resume(mfd->pdev);
}
#endif

static int mddi_remove(struct platform_device *pdev)
{
	if (mddi_host_timer.function)
		del_timer_sync(&mddi_host_timer);

	iounmap(msm_pmdh_base);

	return 0;
}

static int mddi_register_driver(void)
{
	return platform_driver_register(&mddi_driver);
}

static int __init mddi_driver_init(void)
{
	int ret;

	mddi_clk = clk_get(NULL, "mddi_clk");
	if (IS_ERR(mddi_clk)) {
		printk(KERN_ERR "can't find mddi_clk \n");
		return PTR_ERR(mddi_clk);
	}
	clk_enable(mddi_clk);

	mddi_pclk = clk_get(NULL, "mddi_pclk");
	if (IS_ERR(mddi_pclk))
		mddi_pclk = NULL;
	else
		clk_enable(mddi_pclk);

	ret = mddi_register_driver();
	if (ret) {
		clk_disable(mddi_clk);
		clk_put(mddi_clk);
		if (mddi_pclk) {
			clk_disable(mddi_pclk);
			clk_put(mddi_pclk);
		}
		printk(KERN_ERR "mddi_register_driver() failed!\n");
		return ret;
	}

	mddi_init();

	return ret;
}

module_init(mddi_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 <asm/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
	36	#include "msm_fb.h"
	37	#include "mddihosti.h"
	38	#include "mddihost.h"
	39	#include <mach/gpio.h>
	40	#include <mach/clk.h>
	41
	42	static int mddi_probe(struct platform_device *pdev);
	43	static int mddi_remove(struct platform_device *pdev);
	44
	45	static int mddi_off(struct platform_device *pdev);
	46	static int mddi_on(struct platform_device *pdev);
	47
	48	static int mddi_suspend(struct platform_device *pdev, pm_message_t state);
	49	static int mddi_resume(struct platform_device *pdev);
	50
	51	#ifdef CONFIG_HAS_EARLYSUSPEND
	52	static void mddi_early_suspend(struct early_suspend *h);
	53	static void mddi_early_resume(struct early_suspend *h);
	54	#endif
	55
	56	static struct platform_device *pdev_list[MSM_FB_MAX_DEV_LIST];
	57	static int pdev_list_cnt;
	58	static struct clk *mddi_clk;
	59	static struct clk *mddi_pclk;
	60	static struct mddi_platform_data *mddi_pdata;
	61
	62	static struct platform_driver mddi_driver = {
	63	.probe = mddi_probe,
	64	.remove = mddi_remove,
65	#ifndef CONFIG_HAS_EARLYSUSPEND
66	#ifdef CONFIG_PM
67	.suspend = mddi_suspend,
68	.resume = mddi_resume,
69	#endif
70	#endif
71	.suspend_late = NULL,
72	.resume_early = NULL,
73	.shutdown = NULL,
74	.driver = {
75	.name = "mddi",
76	},
77	};
78
79	extern int int_mddi_pri_flag;
80
81	static int mddi_off(struct platform_device *pdev)
82	{
83	int ret = 0;
84
85	ret = panel_next_off(pdev);
86
87	if (mddi_pdata && mddi_pdata->mddi_power_save)
88	mddi_pdata->mddi_power_save(0);
89
90	return ret;
91	}
92
93	static int mddi_on(struct platform_device *pdev)
94	{
95	int ret = 0;
96	u32 clk_rate;
97	struct msm_fb_data_type *mfd;
98
99	mfd = platform_get_drvdata(pdev);
100
101	if (mddi_pdata && mddi_pdata->mddi_power_save)
102	mddi_pdata->mddi_power_save(1);
103
104	clk_rate = mfd->fbi->var.pixclock;
105	clk_rate = min(clk_rate, mfd->panel_info.clk_max);
106
107	if (mddi_pdata &&
108	mddi_pdata->mddi_sel_clk &&
109	mddi_pdata->mddi_sel_clk(&clk_rate))
110	printk(KERN_ERR
111	"%s: can't select mddi io clk targate rate = %d\n",
112	__func__, clk_rate);
113
114	if (clk_set_min_rate(mddi_clk, clk_rate) < 0)
115	printk(KERN_ERR "%s: clk_set_min_rate failed\n",
116	__func__);
117
118	ret = panel_next_on(pdev);
119
120	return ret;
121	}
122
123	static int mddi_resource_initialized;
124
125	static int mddi_probe(struct platform_device *pdev)
126	{
127	struct msm_fb_data_type *mfd;
128	struct platform_device *mdp_dev = NULL;
129	struct msm_fb_panel_data *pdata = NULL;
130	int rc;
131	resource_size_t size ;
132	u32 clk_rate;
133
134	if ((pdev->id == 0) && (pdev->num_resources >= 0)) {
135	mddi_pdata = pdev->dev.platform_data;
136
137	size = resource_size(&pdev->resource[0]);
138	msm_pmdh_base = ioremap(pdev->resource[0].start, size);
139
140	MSM_FB_INFO("primary mddi base phy_addr = 0x%x virt = 0x%x\n",
141	pdev->resource[0].start, (int) msm_pmdh_base);
142
143	if (unlikely(!msm_pmdh_base))
144	return -ENOMEM;
145
146	if (mddi_pdata && mddi_pdata->mddi_power_save)
147	mddi_pdata->mddi_power_save(1);
148
149	mddi_resource_initialized = 1;
150	return 0;
151	}
152
153	if (!mddi_resource_initialized)
154	return -EPERM;
155
156	mfd = platform_get_drvdata(pdev);
157
158	if (!mfd)
159	return -ENODEV;
160
161	if (mfd->key != MFD_KEY)
162	return -EINVAL;
163
164	if (pdev_list_cnt >= MSM_FB_MAX_DEV_LIST)
165	return -ENOMEM;
166
167	mdp_dev = platform_device_alloc("mdp", pdev->id);
168	if (!mdp_dev)
169	return -ENOMEM;
170
171	/*
172	* link to the latest pdev
173	*/
174	mfd->pdev = mdp_dev;
175	mfd->dest = DISPLAY_LCD;
176
177	/*
178	* alloc panel device data
179	*/
180	if (platform_device_add_data
181	(mdp_dev, pdev->dev.platform_data,
182	sizeof(struct msm_fb_panel_data))) {
183	printk(KERN_ERR "mddi_probe: platform_device_add_data failed!\n");
184	platform_device_put(mdp_dev);
185	return -ENOMEM;
186	}
187	/*
188	* data chain
189	*/
190	pdata = mdp_dev->dev.platform_data;
191	pdata->on = mddi_on;
192	pdata->off = mddi_off;
193	pdata->next = pdev;
194
195	/*
196	* get/set panel specific fb info
197	*/
198	mfd->panel_info = pdata->panel_info;
199	mfd->fb_imgType = MDP_RGB_565;
200
201	clk_rate = mfd->panel_info.clk_max;
202	if (mddi_pdata &&
203	mddi_pdata->mddi_sel_clk &&
204	mddi_pdata->mddi_sel_clk(&clk_rate))
205	printk(KERN_ERR
206	"%s: can't select mddi io clk targate rate = %d\n",
207	__func__, clk_rate);
208
209	if (clk_set_max_rate(mddi_clk, clk_rate) < 0)
210	printk(KERN_ERR "%s: clk_set_max_rate failed\n", __func__);
211	mfd->panel_info.clk_rate = mfd->panel_info.clk_min;
212
213	/*
214	* set driver data
215	*/
216	platform_set_drvdata(mdp_dev, mfd);
217
218	/*
219	* register in mdp driver
220	*/
221	rc = platform_device_add(mdp_dev);
222	if (rc)
223	goto mddi_probe_err;
224
225	pdev_list[pdev_list_cnt++] = pdev;
226
227	#ifdef CONFIG_HAS_EARLYSUSPEND
228	mfd->mddi_early_suspend.level = EARLY_SUSPEND_LEVEL_DISABLE_FB;
229	mfd->mddi_early_suspend.suspend = mddi_early_suspend;
230	mfd->mddi_early_suspend.resume = mddi_early_resume;
231	register_early_suspend(&mfd->mddi_early_suspend);
232	#endif
233
234	return 0;
235
236	mddi_probe_err:
237	platform_device_put(mdp_dev);
238	return rc;
239	}
240
241	static int mddi_pad_ctrl;
242	static int mddi_power_locked;
243	static int mddi_is_in_suspend;
244
245	void mddi_disable(int lock)
246	{
247	mddi_host_type host_idx = MDDI_HOST_PRIM;
248
249	if (mddi_power_locked)
250	return;
251
252	if (lock)
253	mddi_power_locked = 1;
254
255	if (mddi_host_timer.function)
256	del_timer_sync(&mddi_host_timer);
257
258	mddi_pad_ctrl = mddi_host_reg_in(PAD_CTL);
259	mddi_host_reg_out(PAD_CTL, 0x0);
260
261	if (clk_set_min_rate(mddi_clk, 0) < 0)
262	printk(KERN_ERR "%s: clk_set_min_rate failed\n", __func__);
263
264	clk_disable(mddi_clk);
265	if (mddi_pclk)
266	clk_disable(mddi_pclk);
267	disable_irq(INT_MDDI_PRI);
268
269	if (mddi_pdata && mddi_pdata->mddi_power_save)
270	mddi_pdata->mddi_power_save(0);
271	}
272
273	static int mddi_suspend(struct platform_device *pdev, pm_message_t state)
274	{
275	if (mddi_is_in_suspend)
276	return 0;
277
278	mddi_is_in_suspend = 1;
279	mddi_disable(0);
280	return 0;
281	}
282
283	static int mddi_resume(struct platform_device *pdev)
284	{
285	mddi_host_type host_idx = MDDI_HOST_PRIM;
286
287	if (!mddi_is_in_suspend)
288	return 0;
289
290	mddi_is_in_suspend = 0;
291
292	if (mddi_power_locked)
293	return 0;
294
295	enable_irq(INT_MDDI_PRI);
296	clk_enable(mddi_clk);
297	if (mddi_pclk)
298	clk_enable(mddi_pclk);
299	mddi_host_reg_out(PAD_CTL, mddi_pad_ctrl);
300
301	if (mddi_host_timer.function)
302	mddi_host_timer_service(0);
303
304	return 0;
305	}
306
307	#ifdef CONFIG_HAS_EARLYSUSPEND
308	static void mddi_early_suspend(struct early_suspend *h)
309	{
310	pm_message_t state;
311	struct msm_fb_data_type *mfd = container_of(h, struct msm_fb_data_type,
312	mddi_early_suspend);
313
314	state.event = PM_EVENT_SUSPEND;
315	mddi_suspend(mfd->pdev, state);
316	}
317
318	static void mddi_early_resume(struct early_suspend *h)
319	{
320	struct msm_fb_data_type *mfd = container_of(h, struct msm_fb_data_type,
321	mddi_early_suspend);
322	mddi_resume(mfd->pdev);
323	}
324	#endif
325
326	static int mddi_remove(struct platform_device *pdev)
327	{
328	if (mddi_host_timer.function)
329	del_timer_sync(&mddi_host_timer);
330
331	iounmap(msm_pmdh_base);
332
333	return 0;
334	}
335
336	static int mddi_register_driver(void)
337	{
338	return platform_driver_register(&mddi_driver);
339	}
340
341	static int __init mddi_driver_init(void)
342	{
343	int ret;
344
345	mddi_clk = clk_get(NULL, "mddi_clk");
346	if (IS_ERR(mddi_clk)) {
347	printk(KERN_ERR "can't find mddi_clk \n");
348	return PTR_ERR(mddi_clk);
349	}
350	clk_enable(mddi_clk);
351
352	mddi_pclk = clk_get(NULL, "mddi_pclk");
353	if (IS_ERR(mddi_pclk))
354	mddi_pclk = NULL;
355	else
356	clk_enable(mddi_pclk);
357
358	ret = mddi_register_driver();
359	if (ret) {
360	clk_disable(mddi_clk);
361	clk_put(mddi_clk);
362	if (mddi_pclk) {
363	clk_disable(mddi_pclk);
364	clk_put(mddi_pclk);
365	}
366	printk(KERN_ERR "mddi_register_driver() failed!\n");
367	return ret;
368	}
369
370	mddi_init();
371
372	return ret;
373	}
374
375	module_init(mddi_driver_init);