static int mddi_on(struct platform_device *pdev)
{
int ret = 0;
u32 clk_rate;
struct msm_fb_data_type *mfd;
#ifdef ENABLE_FWD_LINK_SKEW_CALIBRATION
mddi_host_type host_idx = MDDI_HOST_PRIM;
u32 stat_reg;
#endif
mfd = platform_get_drvdata(pdev);
pmdh_clk_enable();
pm_runtime_get(&pdev->dev);
if (mddi_pdata && mddi_pdata->mddi_power_save)
mddi_pdata->mddi_power_save(1);
pmdh_clk_enable();
#ifdef ENABLE_FWD_LINK_SKEW_CALIBRATION
if (mddi_client_type < 2) {
/* For skew calibration, clock should be less than 50MHz */
if (!clk_set_min_rate(mddi_clk, 49000000)) {
stat_reg = mddi_host_reg_in(STAT);
printk(KERN_DEBUG "\n stat_reg = 0x%x", stat_reg);
mddi_host_reg_out(CMD, MDDI_CMD_HIBERNATE);
if (stat_reg & (0x1 << 4))
mddi_host_reg_out(CMD, MDDI_CMD_LINK_ACTIVE);
mddi_host_reg_out(CMD, MDDI_CMD_SEND_RTD);
mddi_send_fw_link_skew_cal(host_idx);
mddi_host_reg_out(CMD, MDDI_CMD_SEND_RTD);
mddi_host_reg_out(CMD, MDDI_CMD_HIBERNATE | 1);
} else {
printk(KERN_ERR "%s: clk_set_min_rate failed\n",
__func__);
}
}
#endif
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_off(struct platform_device *pdev)
{
struct msm_fb_data_type *mfd;
boolean dma_pending, dma_update_flag;
int ret, i;
mfd = platform_get_drvdata(pdev);
for (i = 0; i < 6; i++) {
dma_update_flag = mfd->dma_update_flag;
dma_pending = mfd->dma->busy;
if (dma_update_flag && !dma_pending)
break;
msleep(5);
}
pmdh_clk_enable();
ret = panel_next_off(pdev);
pmdh_clk_disable();
if (mddi_pdata && mddi_pdata->mddi_power_save)
mddi_pdata->mddi_power_save(0);
#ifdef CONFIG_MSM_BUS_SCALING
mdp_bus_scale_update_request(0);
#else
if (mfd->ebi1_clk)
clk_disable_unprepare(mfd->ebi1_clk);
#endif
pm_runtime_put(&pdev->dev);
return ret;
}
static int __init mddi_driver_init(void)
{
int ret;
pmdh_clk_status = 0;
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);
}
ret = clk_set_min_rate(mddi_clk, 49000000);
if (ret)
printk(KERN_ERR "Can't set mddi_clk min rate to 49000000\n");
printk(KERN_INFO "mddi_clk init rate is %lu\n",
clk_get_rate(mddi_clk));
mddi_pclk = clk_get(NULL, "mddi_pclk");
if (IS_ERR(mddi_pclk))
mddi_pclk = NULL;
pmdh_clk_enable();
ret = mddi_register_driver();
if (ret) {
pmdh_clk_disable();
clk_put(mddi_clk);
if (mddi_pclk)
clk_put(mddi_pclk);
printk(KERN_ERR "mddi_register_driver() failed!\n");
return ret;
}
mddi_init();
return ret;
}
static int mddi_off(struct platform_device *pdev)
{
struct msm_fb_data_type *mfd;
boolean dma_pending, dma_update_flag;
int ret, i;
mfd = platform_get_drvdata(pdev);
for (i = 0; i < 6; i++) {
dma_update_flag = mfd->dma_update_flag;
dma_pending = mfd->dma->busy;
if (dma_update_flag && !dma_pending)
break;
msleep(5);
}
pmdh_clk_enable();
ret = panel_next_off(pdev);
pmdh_clk_disable();
if (mddi_pdata && mddi_pdata->mddi_power_save)
mddi_pdata->mddi_power_save(0);
pm_runtime_put(&pdev->dev);
return ret;
}
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);
}
mddi_pclk = clk_get(NULL, "mddi_pclk");
if (IS_ERR(mddi_pclk))
mddi_pclk = NULL;
pmdh_clk_enable();
ret = mddi_register_driver();
if (ret) {
pmdh_clk_disable();
clk_put(mddi_clk);
if (mddi_pclk) {
clk_put(mddi_pclk);
}
printk(KERN_ERR "mddi_register_driver() failed!\n");
return ret;
}
mddi_init();
return ret;
}
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);
pmdh_clk_enable();
mddi_host_reg_out(PAD_CTL, mddi_pad_ctrl);
return 0;
}
void mddi_disable(int lock)
{
mddi_host_type host_idx = MDDI_HOST_PRIM;
if (mddi_power_locked)
return;
if (lock)
mddi_power_locked = 1;
pmdh_clk_enable();
mddi_pad_ctrl = mddi_host_reg_in(PAD_CTL);
mddi_host_reg_out(PAD_CTL, 0x0);
pmdh_clk_disable();
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)
{
mddi_host_type host_idx = MDDI_HOST_PRIM;
if (mddi_is_in_suspend)
return 0;
mddi_is_in_suspend = 1;
if (mddi_power_locked)
return 0;
pmdh_clk_enable();
mddi_pad_ctrl = mddi_host_reg_in(PAD_CTL);
mddi_host_reg_out(PAD_CTL, 0x0);
pmdh_clk_disable();
return 0;
}
int pmdh_clk_func(int value)
{
int ret = 0;
switch (value) {
case 0:
pmdh_clk_disable();
break;
case 1:
pmdh_clk_enable();
break;
case 2:
default:
mutex_lock(&pmdh_clk_lock);
ret = pmdh_clk_status;
mutex_unlock(&pmdh_clk_lock);
break;
}
return ret;
}
void mddi_disable(int lock)
{
mddi_host_type host_idx = MDDI_HOST_PRIM;
if (mddi_power_locked)
return;
if (lock)
mddi_power_locked = 1;
pmdh_clk_enable();
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__);
pmdh_clk_disable();
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)
{
mddi_host_type host_idx = MDDI_HOST_PRIM;
if (mddi_is_in_suspend)
return 0;
mddi_is_in_suspend = 1;
if (mddi_power_locked)
return 0;
pmdh_clk_enable();
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__);
pmdh_clk_disable();
return 0;
}
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;
unsigned long rate;
int ret;
struct clk *ebi1_clk = NULL;
if ((pdev->id == 0) && (pdev->num_resources >= 0)) {
mddi_pdata = pdev->dev.platform_data;
pmdh_clk_status = 0;
mddi_clk = clk_get(&pdev->dev, "core_clk");
if (IS_ERR(mddi_clk)) {
pr_err("can't find mddi_clk\n");
return PTR_ERR(mddi_clk);
}
rate = clk_round_rate(mddi_clk, 49000000);
ret = clk_set_rate(mddi_clk, rate);
if (ret)
pr_err("Can't set mddi_clk min rate to %lu\n",
rate);
pr_info("mddi_clk init rate is %lu\n",
clk_get_rate(mddi_clk));
mddi_pclk = clk_get(&pdev->dev, "iface_clk");
if (IS_ERR(mddi_pclk))
mddi_pclk = NULL;
pmdh_clk_enable();
#ifndef CONFIG_MSM_BUS_SCALING
ebi1_clk = clk_get(&pdev->dev, "mem_clk");
if (IS_ERR(ebi1_clk))
return PTR_ERR(ebi1_clk);
clk_set_rate(ebi1_clk, 65000000);
#endif
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);
mfd->ebi1_clk = ebi1_clk;
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;
pdata->clk_func = pmdh_clk_func;
/*
* get/set panel specific fb info
*/
mfd->panel_info = pdata->panel_info;
if (mfd->index == 0)
mfd->fb_imgType = MSMFB_DEFAULT_TYPE;
else
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;
if (!mddi_client_type)
mddi_client_type = mfd->panel_info.lcd.rev;
else if (!mfd->panel_info.lcd.rev)
printk(KERN_ERR
"%s: mddi client is trying to revert back to type 1 !!!\n",
__func__);
/*
* set driver data
*/
platform_set_drvdata(mdp_dev, mfd);
rc = pm_runtime_set_active(&pdev->dev);
if (rc < 0)
printk(KERN_ERR "pm_runtime: fail to set active\n");
rc = 0;
pm_runtime_enable(&pdev->dev);
/*
* 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;
}
