Esempi in C++ (Cpp) per prm_open_session

Esempio n. 1

File: tp_drv.c Progetto: ashang/xpenology-3.x

static int get_cpu_freq(unsigned int *cpu_freq)
{
	unsigned long freq = 0;

#ifdef CONFIG_CPU_FREQ
	freq = cpufreq_quick_get(0);
#else // CONFIG_CPU_FREQ

//#if defined(PRM_SUPPORT) && !defined(PJ1)
#if defined(PRM_SUPPORT)
	int client_id;
	char* client_name = "frequency queryer";
	unsigned int cop;

#if defined(LINUX_VERSION_CODE) && (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 21))
	struct pxa3xx_fv_info fv_info;
#else
	struct mhn_fv_info fv_info;
#endif
	/* open a PRM session to query current core frequency */
	client_id = prm_open_session(PRI_LOWEST, client_name, NULL, NULL);
	if (client_id < 0) {
		printk (KERN_ALERT "[CPA] *STATUS* open prm session failed!\n");
		return -1;
	}

	if (cop_get_cur_cop(client_id, &cop, &fv_info))
	{
		printk(KERN_ERR "[CPA] Can't get core clock frequency\n");
		return -1;
	}

	// check if in ring 0 mode, frequency is always 60MHz when in ring 0 mode
	// BSP releases older than alpha4 don't support ring 0 mode
	if (fv_info.d0cs)
		freq = 60 * 1000;
	else
		freq = fv_info.xl *  fv_info.xn * 13000;

	prm_close_session(client_id);
#else
	freq = 0;
#endif
#endif // CONFIG_CPU_FREQ

	if (copy_to_user(cpu_freq, &freq, sizeof(unsigned long)) != 0)
	{
		return -EFAULT;
	}

	return 0;
}

Esempio n. 2

File: pmu.c Progetto: JamiLiang/android_kernel_samsung_xcover

/* 
 * Allocate PMU resources and hook the PMU ISR
 */
int allocate_pmu(void)
{
#ifdef PX_CPU_PJ1
	return 0;
#else
#ifdef PRM_SUPPORT
	int ret;
	int i;

	ret = prm_open_session(PRI_VTUNE, prm_client_name, NULL, NULL);

	if (ret < 0)
	{
		printk(KERN_ERR "failed to open prm open session\n");
		return ret;
	}

	prm_client_id = ret;

	for (i=0; i<PRM_ALLOC_RES_COUNT; i++)
	{
		ret = prm_allocate_resource(prm_client_id, prm_resource[i], 0);

		if (ret != 0)
		{
			printk(KERN_ERR "failed to allocate prm resource %d\n", 
					prm_resource[i]);

			printk(KERN_ERR "ret = %d\n", ret);
			goto alloc_pmu_err;
		}
	}

/*	if ((ret = pmu_register_isr(prm_client_id, cm_pmu_isr, 0)) != 0)
	{
		printk(KERN_ERR "failed to register ISR\n");
		goto alloc_pmu_err;
	}
*/
	if ((ret = prm_commit_resources(prm_client_id, 0)) != 0)
	{
		printk(KERN_ERR "failed to commit prm resource\n");
		goto alloc_pmu_err;
	}

	return 0;

alloc_pmu_err:
	free_pmu();

	return ret;

#else // PRM_SUPPORT
#if 0
	if ((ret = request_irq(g_pmu_irq_num/*IRQ_PMU*/, cm_pmu_isr,
#if defined(LINUX_VERSION_CODE) && (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 21))
					IRQF_DISABLED
#else
					SA_INTERRUPT
#endif
					, "CPA PMU", dev_id)) != 0)
	{
		printk(KERN_ERR "request_irq fails: ret = %d", ret);
		return -EACCES;
	}
#endif
	return 0;
#endif // PRM_SUPPORT
#endif // PX_CPU_PJ1
}