1 files changed, 742 insertions, 0 deletions

diff --git a/drivers/gpu/drm/msm/adreno/adreno_gpu.c b/drivers/gpu/drm/msm/adreno/adreno_gpu.c
new file mode 100644
index 000000000..c9f831604
--- /dev/null
+++ b/drivers/gpu/drm/msm/adreno/adreno_gpu.c
@@ -0,0 +1,742 @@
+/*
+ * Copyright (C) 2013 Red Hat
+ * Author: Rob Clark <robdclark@gmail.com>
+ *
+ * Copyright (c) 2014 The Linux Foundation. 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 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/>.
+ */
+
+#include <linux/ascii85.h>
+#include <linux/kernel.h>
+#include <linux/pm_opp.h>
+#include <linux/slab.h>
+#include "adreno_gpu.h"
+#include "msm_gem.h"
+#include "msm_mmu.h"
+
+int adreno_get_param(struct msm_gpu *gpu, uint32_t param, uint64_t *value)
+{
+	struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu);
+
+	switch (param) {
+	case MSM_PARAM_GPU_ID:
+		*value = adreno_gpu->info->revn;
+		return 0;
+	case MSM_PARAM_GMEM_SIZE:
+		*value = adreno_gpu->gmem;
+		return 0;
+	case MSM_PARAM_GMEM_BASE:
+		*value = 0x100000;
+		return 0;
+	case MSM_PARAM_CHIP_ID:
+		*value = adreno_gpu->rev.patchid |
+				(adreno_gpu->rev.minor << 8) |
+				(adreno_gpu->rev.major << 16) |
+				(adreno_gpu->rev.core << 24);
+		return 0;
+	case MSM_PARAM_MAX_FREQ:
+		*value = adreno_gpu->base.fast_rate;
+		return 0;
+	case MSM_PARAM_TIMESTAMP:
+		if (adreno_gpu->funcs->get_timestamp) {
+			int ret;
+
+			pm_runtime_get_sync(&gpu->pdev->dev);
+			ret = adreno_gpu->funcs->get_timestamp(gpu, value);
+			pm_runtime_put_autosuspend(&gpu->pdev->dev);
+
+			return ret;
+		}
+		return -EINVAL;
+	case MSM_PARAM_NR_RINGS:
+		*value = gpu->nr_rings;
+		return 0;
+	default:
+		DBG("%s: invalid param: %u", gpu->name, param);
+		return -EINVAL;
+	}
+}
+
+const struct firmware *
+adreno_request_fw(struct adreno_gpu *adreno_gpu, const char *fwname)
+{
+	struct drm_device *drm = adreno_gpu->base.dev;
+	const struct firmware *fw = NULL;
+	char *newname;
+	int ret;
+
+	newname = kasprintf(GFP_KERNEL, "qcom/%s", fwname);
+	if (!newname)
+		return ERR_PTR(-ENOMEM);
+
+	/*
+	 * Try first to load from qcom/$fwfile using a direct load (to avoid
+	 * a potential timeout waiting for usermode helper)
+	 */
+	if ((adreno_gpu->fwloc == FW_LOCATION_UNKNOWN) ||
+	    (adreno_gpu->fwloc == FW_LOCATION_NEW)) {
+
+		ret = request_firmware_direct(&fw, newname, drm->dev);
+		if (!ret) {
+			dev_info(drm->dev, "loaded %s from new location\n",
+				newname);
+			adreno_gpu->fwloc = FW_LOCATION_NEW;
+			goto out;
+		} else if (adreno_gpu->fwloc != FW_LOCATION_UNKNOWN) {
+			dev_err(drm->dev, "failed to load %s: %d\n",
+				newname, ret);
+			fw = ERR_PTR(ret);
+			goto out;
+		}
+	}
+
+	/*
+	 * Then try the legacy location without qcom/ prefix
+	 */
+	if ((adreno_gpu->fwloc == FW_LOCATION_UNKNOWN) ||
+	    (adreno_gpu->fwloc == FW_LOCATION_LEGACY)) {
+
+		ret = request_firmware_direct(&fw, fwname, drm->dev);
+		if (!ret) {
+			dev_info(drm->dev, "loaded %s from legacy location\n",
+				newname);
+			adreno_gpu->fwloc = FW_LOCATION_LEGACY;
+			goto out;
+		} else if (adreno_gpu->fwloc != FW_LOCATION_UNKNOWN) {
+			dev_err(drm->dev, "failed to load %s: %d\n",
+				fwname, ret);
+			fw = ERR_PTR(ret);
+			goto out;
+		}
+	}
+
+	/*
+	 * Finally fall back to request_firmware() for cases where the
+	 * usermode helper is needed (I think mainly android)
+	 */
+	if ((adreno_gpu->fwloc == FW_LOCATION_UNKNOWN) ||
+	    (adreno_gpu->fwloc == FW_LOCATION_HELPER)) {
+
+		ret = request_firmware(&fw, newname, drm->dev);
+		if (!ret) {
+			dev_info(drm->dev, "loaded %s with helper\n",
+				newname);
+			adreno_gpu->fwloc = FW_LOCATION_HELPER;
+			goto out;
+		} else if (adreno_gpu->fwloc != FW_LOCATION_UNKNOWN) {
+			dev_err(drm->dev, "failed to load %s: %d\n",
+				newname, ret);
+			fw = ERR_PTR(ret);
+			goto out;
+		}
+	}
+
+	dev_err(drm->dev, "failed to load %s\n", fwname);
+	fw = ERR_PTR(-ENOENT);
+out:
+	kfree(newname);
+	return fw;
+}
+
+int adreno_load_fw(struct adreno_gpu *adreno_gpu)
+{
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(adreno_gpu->info->fw); i++) {
+		const struct firmware *fw;
+
+		if (!adreno_gpu->info->fw[i])
+			continue;
+
+		/* Skip if the firmware has already been loaded */
+		if (adreno_gpu->fw[i])
+			continue;
+
+		fw = adreno_request_fw(adreno_gpu, adreno_gpu->info->fw[i]);
+		if (IS_ERR(fw))
+			return PTR_ERR(fw);
+
+		adreno_gpu->fw[i] = fw;
+	}
+
+	return 0;
+}
+
+struct drm_gem_object *adreno_fw_create_bo(struct msm_gpu *gpu,
+		const struct firmware *fw, u64 *iova)
+{
+	struct drm_gem_object *bo;
+	void *ptr;
+
+	ptr = msm_gem_kernel_new_locked(gpu->dev, fw->size - 4,
+		MSM_BO_UNCACHED | MSM_BO_GPU_READONLY, gpu->aspace, &bo, iova);
+
+	if (IS_ERR(ptr))
+		return ERR_CAST(ptr);
+
+	memcpy(ptr, &fw->data[4], fw->size - 4);
+
+	msm_gem_put_vaddr(bo);
+
+	return bo;
+}
+
+int adreno_hw_init(struct msm_gpu *gpu)
+{
+	struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu);
+	int ret, i;
+
+	DBG("%s", gpu->name);
+
+	ret = adreno_load_fw(adreno_gpu);
+	if (ret)
+		return ret;
+
+	for (i = 0; i < gpu->nr_rings; i++) {
+		struct msm_ringbuffer *ring = gpu->rb[i];
+
+		if (!ring)
+			continue;
+
+		ret = msm_gem_get_iova(ring->bo, gpu->aspace, &ring->iova);
+		if (ret) {
+			ring->iova = 0;
+			dev_err(gpu->dev->dev,
+				"could not map ringbuffer %d: %d\n", i, ret);
+			return ret;
+		}
+
+		ring->cur = ring->start;
+		ring->next = ring->start;
+
+		/* reset completed fence seqno: */
+		ring->memptrs->fence = ring->fctx->completed_fence;
+		ring->memptrs->rptr = 0;
+	}
+
+	/*
+	 * Setup REG_CP_RB_CNTL.  The same value is used across targets (with
+	 * the excpetion of A430 that disables the RPTR shadow) - the cacluation
+	 * for the ringbuffer size and block size is moved to msm_gpu.h for the
+	 * pre-processor to deal with and the A430 variant is ORed in here
+	 */
+	adreno_gpu_write(adreno_gpu, REG_ADRENO_CP_RB_CNTL,
+		MSM_GPU_RB_CNTL_DEFAULT |
+		(adreno_is_a430(adreno_gpu) ? AXXX_CP_RB_CNTL_NO_UPDATE : 0));
+
+	/* Setup ringbuffer address - use ringbuffer[0] for GPU init */
+	adreno_gpu_write64(adreno_gpu, REG_ADRENO_CP_RB_BASE,
+		REG_ADRENO_CP_RB_BASE_HI, gpu->rb[0]->iova);
+
+	if (!adreno_is_a430(adreno_gpu)) {
+		adreno_gpu_write64(adreno_gpu, REG_ADRENO_CP_RB_RPTR_ADDR,
+			REG_ADRENO_CP_RB_RPTR_ADDR_HI,
+			rbmemptr(gpu->rb[0], rptr));
+	}
+
+	return 0;
+}
+
+/* Use this helper to read rptr, since a430 doesn't update rptr in memory */
+static uint32_t get_rptr(struct adreno_gpu *adreno_gpu,
+		struct msm_ringbuffer *ring)
+{
+	if (adreno_is_a430(adreno_gpu))
+		return ring->memptrs->rptr = adreno_gpu_read(
+			adreno_gpu, REG_ADRENO_CP_RB_RPTR);
+	else
+		return ring->memptrs->rptr;
+}
+
+struct msm_ringbuffer *adreno_active_ring(struct msm_gpu *gpu)
+{
+	return gpu->rb[0];
+}
+
+void adreno_recover(struct msm_gpu *gpu)
+{
+	struct drm_device *dev = gpu->dev;
+	int ret;
+
+	// XXX pm-runtime??  we *need* the device to be off after this
+	// so maybe continuing to call ->pm_suspend/resume() is better?
+
+	gpu->funcs->pm_suspend(gpu);
+	gpu->funcs->pm_resume(gpu);
+
+	ret = msm_gpu_hw_init(gpu);
+	if (ret) {
+		dev_err(dev->dev, "gpu hw init failed: %d\n", ret);
+		/* hmm, oh well? */
+	}
+}
+
+void adreno_submit(struct msm_gpu *gpu, struct msm_gem_submit *submit,
+		struct msm_file_private *ctx)
+{
+	struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu);
+	struct msm_drm_private *priv = gpu->dev->dev_private;
+	struct msm_ringbuffer *ring = submit->ring;
+	unsigned i;
+
+	for (i = 0; i < submit->nr_cmds; i++) {
+		switch (submit->cmd[i].type) {
+		case MSM_SUBMIT_CMD_IB_TARGET_BUF:
+			/* ignore IB-targets */
+			break;
+		case MSM_SUBMIT_CMD_CTX_RESTORE_BUF:
+			/* ignore if there has not been a ctx switch: */
+			if (priv->lastctx == ctx)
+				break;
+		case MSM_SUBMIT_CMD_BUF:
+			OUT_PKT3(ring, adreno_is_a430(adreno_gpu) ?
+				CP_INDIRECT_BUFFER_PFE : CP_INDIRECT_BUFFER_PFD, 2);
+			OUT_RING(ring, lower_32_bits(submit->cmd[i].iova));
+			OUT_RING(ring, submit->cmd[i].size);
+			OUT_PKT2(ring);
+			break;
+		}
+	}
+
+	OUT_PKT0(ring, REG_AXXX_CP_SCRATCH_REG2, 1);
+	OUT_RING(ring, submit->seqno);
+
+	if (adreno_is_a3xx(adreno_gpu) || adreno_is_a4xx(adreno_gpu)) {
+		/* Flush HLSQ lazy updates to make sure there is nothing
+		 * pending for indirect loads after the timestamp has
+		 * passed:
+		 */
+		OUT_PKT3(ring, CP_EVENT_WRITE, 1);
+		OUT_RING(ring, HLSQ_FLUSH);
+
+		OUT_PKT3(ring, CP_WAIT_FOR_IDLE, 1);
+		OUT_RING(ring, 0x00000000);
+	}
+
+	/* BIT(31) of CACHE_FLUSH_TS triggers CACHE_FLUSH_TS IRQ from GPU */
+	OUT_PKT3(ring, CP_EVENT_WRITE, 3);
+	OUT_RING(ring, CACHE_FLUSH_TS | BIT(31));
+	OUT_RING(ring, rbmemptr(ring, fence));
+	OUT_RING(ring, submit->seqno);
+
+#if 0
+	if (adreno_is_a3xx(adreno_gpu)) {
+		/* Dummy set-constant to trigger context rollover */
+		OUT_PKT3(ring, CP_SET_CONSTANT, 2);
+		OUT_RING(ring, CP_REG(REG_A3XX_HLSQ_CL_KERNEL_GROUP_X_REG));
+		OUT_RING(ring, 0x00000000);
+	}
+#endif
+
+	gpu->funcs->flush(gpu, ring);
+}
+
+void adreno_flush(struct msm_gpu *gpu, struct msm_ringbuffer *ring)
+{
+	struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu);
+	uint32_t wptr;
+
+	/* Copy the shadow to the actual register */
+	ring->cur = ring->next;
+
+	/*
+	 * Mask wptr value that we calculate to fit in the HW range. This is
+	 * to account for the possibility that the last command fit exactly into
+	 * the ringbuffer and rb->next hasn't wrapped to zero yet
+	 */
+	wptr = get_wptr(ring);
+
+	/* ensure writes to ringbuffer have hit system memory: */
+	mb();
+
+	adreno_gpu_write(adreno_gpu, REG_ADRENO_CP_RB_WPTR, wptr);
+}
+
+bool adreno_idle(struct msm_gpu *gpu, struct msm_ringbuffer *ring)
+{
+	struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu);
+	uint32_t wptr = get_wptr(ring);
+
+	/* wait for CP to drain ringbuffer: */
+	if (!spin_until(get_rptr(adreno_gpu, ring) == wptr))
+		return true;
+
+	/* TODO maybe we need to reset GPU here to recover from hang? */
+	DRM_ERROR("%s: timeout waiting to drain ringbuffer %d rptr/wptr = %X/%X\n",
+		gpu->name, ring->id, get_rptr(adreno_gpu, ring), wptr);
+
+	return false;
+}
+
+int adreno_gpu_state_get(struct msm_gpu *gpu, struct msm_gpu_state *state)
+{
+	struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu);
+	int i, count = 0;
+
+	kref_init(&state->ref);
+
+	ktime_get_real_ts64(&state->time);
+
+	for (i = 0; i < gpu->nr_rings; i++) {
+		int size = 0, j;
+
+		state->ring[i].fence = gpu->rb[i]->memptrs->fence;
+		state->ring[i].iova = gpu->rb[i]->iova;
+		state->ring[i].seqno = gpu->rb[i]->seqno;
+		state->ring[i].rptr = get_rptr(adreno_gpu, gpu->rb[i]);
+		state->ring[i].wptr = get_wptr(gpu->rb[i]);
+
+		/* Copy at least 'wptr' dwords of the data */
+		size = state->ring[i].wptr;
+
+		/* After wptr find the last non zero dword to save space */
+		for (j = state->ring[i].wptr; j < MSM_GPU_RINGBUFFER_SZ >> 2; j++)
+			if (gpu->rb[i]->start[j])
+				size = j + 1;
+
+		if (size) {
+			state->ring[i].data = kmalloc(size << 2, GFP_KERNEL);
+			if (state->ring[i].data) {
+				memcpy(state->ring[i].data, gpu->rb[i]->start, size << 2);
+				state->ring[i].data_size = size << 2;
+			}
+		}
+	}
+
+	/* Count the number of registers */
+	for (i = 0; adreno_gpu->registers[i] != ~0; i += 2)
+		count += adreno_gpu->registers[i + 1] -
+			adreno_gpu->registers[i] + 1;
+
+	state->registers = kcalloc(count * 2, sizeof(u32), GFP_KERNEL);
+	if (state->registers) {
+		int pos = 0;
+
+		for (i = 0; adreno_gpu->registers[i] != ~0; i += 2) {
+			u32 start = adreno_gpu->registers[i];
+			u32 end   = adreno_gpu->registers[i + 1];
+			u32 addr;
+
+			for (addr = start; addr <= end; addr++) {
+				state->registers[pos++] = addr;
+				state->registers[pos++] = gpu_read(gpu, addr);
+			}
+		}
+
+		state->nr_registers = count;
+	}
+
+	return 0;
+}
+
+void adreno_gpu_state_destroy(struct msm_gpu_state *state)
+{
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(state->ring); i++)
+		kfree(state->ring[i].data);
+
+	for (i = 0; state->bos && i < state->nr_bos; i++)
+		kvfree(state->bos[i].data);
+
+	kfree(state->bos);
+	kfree(state->comm);
+	kfree(state->cmd);
+	kfree(state->registers);
+}
+
+static void adreno_gpu_state_kref_destroy(struct kref *kref)
+{
+	struct msm_gpu_state *state = container_of(kref,
+		struct msm_gpu_state, ref);
+
+	adreno_gpu_state_destroy(state);
+	kfree(state);
+}
+
+int adreno_gpu_state_put(struct msm_gpu_state *state)
+{
+	if (IS_ERR_OR_NULL(state))
+		return 1;
+
+	return kref_put(&state->ref, adreno_gpu_state_kref_destroy);
+}
+
+#if defined(CONFIG_DEBUG_FS) || defined(CONFIG_DEV_COREDUMP)
+
+static void adreno_show_object(struct drm_printer *p, u32 *ptr, int len)
+{
+	char out[ASCII85_BUFSZ];
+	long l, datalen, i;
+
+	if (!ptr || !len)
+		return;
+
+	/*
+	 * Only dump the non-zero part of the buffer - rarely will any data
+	 * completely fill the entire allocated size of the buffer
+	 */
+	for (datalen = 0, i = 0; i < len >> 2; i++) {
+		if (ptr[i])
+			datalen = (i << 2) + 1;
+	}
+
+	/* Skip printing the object if it is empty */
+	if (datalen == 0)
+		return;
+
+	l = ascii85_encode_len(datalen);
+
+	drm_puts(p, "    data: !!ascii85 |\n");
+	drm_puts(p, "     ");
+
+	for (i = 0; i < l; i++)
+		drm_puts(p, ascii85_encode(ptr[i], out));
+
+	drm_puts(p, "\n");
+}
+
+void adreno_show(struct msm_gpu *gpu, struct msm_gpu_state *state,
+		struct drm_printer *p)
+{
+	struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu);
+	int i;
+
+	if (IS_ERR_OR_NULL(state))
+		return;
+
+	drm_printf(p, "revision: %d (%d.%d.%d.%d)\n",
+			adreno_gpu->info->revn, adreno_gpu->rev.core,
+			adreno_gpu->rev.major, adreno_gpu->rev.minor,
+			adreno_gpu->rev.patchid);
+
+	drm_printf(p, "rbbm-status: 0x%08x\n", state->rbbm_status);
+
+	drm_puts(p, "ringbuffer:\n");
+
+	for (i = 0; i < gpu->nr_rings; i++) {
+		drm_printf(p, "  - id: %d\n", i);
+		drm_printf(p, "    iova: 0x%016llx\n", state->ring[i].iova);
+		drm_printf(p, "    last-fence: %d\n", state->ring[i].seqno);
+		drm_printf(p, "    retired-fence: %d\n", state->ring[i].fence);
+		drm_printf(p, "    rptr: %d\n", state->ring[i].rptr);
+		drm_printf(p, "    wptr: %d\n", state->ring[i].wptr);
+		drm_printf(p, "    size: %d\n", MSM_GPU_RINGBUFFER_SZ);
+
+		adreno_show_object(p, state->ring[i].data,
+			state->ring[i].data_size);
+	}
+
+	if (state->bos) {
+		drm_puts(p, "bos:\n");
+
+		for (i = 0; i < state->nr_bos; i++) {
+			drm_printf(p, "  - iova: 0x%016llx\n",
+				state->bos[i].iova);
+			drm_printf(p, "    size: %zd\n", state->bos[i].size);
+
+			adreno_show_object(p, state->bos[i].data,
+				state->bos[i].size);
+		}
+	}
+
+	drm_puts(p, "registers:\n");
+
+	for (i = 0; i < state->nr_registers; i++) {
+		drm_printf(p, "  - { offset: 0x%04x, value: 0x%08x }\n",
+			state->registers[i * 2] << 2,
+			state->registers[(i * 2) + 1]);
+	}
+}
+#endif
+
+/* Dump common gpu status and scratch registers on any hang, to make
+ * the hangcheck logs more useful.  The scratch registers seem always
+ * safe to read when GPU has hung (unlike some other regs, depending
+ * on how the GPU hung), and they are useful to match up to cmdstream
+ * dumps when debugging hangs:
+ */
+void adreno_dump_info(struct msm_gpu *gpu)
+{
+	struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu);
+	int i;
+
+	printk("revision: %d (%d.%d.%d.%d)\n",
+			adreno_gpu->info->revn, adreno_gpu->rev.core,
+			adreno_gpu->rev.major, adreno_gpu->rev.minor,
+			adreno_gpu->rev.patchid);
+
+	for (i = 0; i < gpu->nr_rings; i++) {
+		struct msm_ringbuffer *ring = gpu->rb[i];
+
+		printk("rb %d: fence:    %d/%d\n", i,
+			ring->memptrs->fence,
+			ring->seqno);
+
+		printk("rptr:     %d\n", get_rptr(adreno_gpu, ring));
+		printk("rb wptr:  %d\n", get_wptr(ring));
+	}
+}
+
+/* would be nice to not have to duplicate the _show() stuff with printk(): */
+void adreno_dump(struct msm_gpu *gpu)
+{
+	struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu);
+	int i;
+
+	/* dump these out in a form that can be parsed by demsm: */
+	printk("IO:region %s 00000000 00020000\n", gpu->name);
+	for (i = 0; adreno_gpu->registers[i] != ~0; i += 2) {
+		uint32_t start = adreno_gpu->registers[i];
+		uint32_t end   = adreno_gpu->registers[i+1];
+		uint32_t addr;
+
+		for (addr = start; addr <= end; addr++) {
+			uint32_t val = gpu_read(gpu, addr);
+			printk("IO:R %08x %08x\n", addr<<2, val);
+		}
+	}
+}
+
+static uint32_t ring_freewords(struct msm_ringbuffer *ring)
+{
+	struct adreno_gpu *adreno_gpu = to_adreno_gpu(ring->gpu);
+	uint32_t size = MSM_GPU_RINGBUFFER_SZ >> 2;
+	/* Use ring->next to calculate free size */
+	uint32_t wptr = ring->next - ring->start;
+	uint32_t rptr = get_rptr(adreno_gpu, ring);
+	return (rptr + (size - 1) - wptr) % size;
+}
+
+void adreno_wait_ring(struct msm_ringbuffer *ring, uint32_t ndwords)
+{
+	if (spin_until(ring_freewords(ring) >= ndwords))
+		DRM_DEV_ERROR(ring->gpu->dev->dev,
+			"timeout waiting for space in ringbuffer %d\n",
+			ring->id);
+}
+
+/* Get legacy powerlevels from qcom,gpu-pwrlevels and populate the opp table */
+static int adreno_get_legacy_pwrlevels(struct device *dev)
+{
+	struct device_node *child, *node;
+	int ret;
+
+	node = of_get_compatible_child(dev->of_node, "qcom,gpu-pwrlevels");
+	if (!node) {
+		dev_err(dev, "Could not find the GPU powerlevels\n");
+		return -ENXIO;
+	}
+
+	for_each_child_of_node(node, child) {
+		unsigned int val;
+
+		ret = of_property_read_u32(child, "qcom,gpu-freq", &val);
+		if (ret)
+			continue;
+
+		/*
+		 * Skip the intentionally bogus clock value found at the bottom
+		 * of most legacy frequency tables
+		 */
+		if (val != 27000000)
+			dev_pm_opp_add(dev, val, 0);
+	}
+
+	of_node_put(node);
+
+	return 0;
+}
+
+static int adreno_get_pwrlevels(struct device *dev,
+		struct msm_gpu *gpu)
+{
+	unsigned long freq = ULONG_MAX;
+	struct dev_pm_opp *opp;
+	int ret;
+
+	gpu->fast_rate = 0;
+
+	/* You down with OPP? */
+	if (!of_find_property(dev->of_node, "operating-points-v2", NULL))
+		ret = adreno_get_legacy_pwrlevels(dev);
+	else {
+		ret = dev_pm_opp_of_add_table(dev);
+		if (ret)
+			dev_err(dev, "Unable to set the OPP table\n");
+	}
+
+	if (!ret) {
+		/* Find the fastest defined rate */
+		opp = dev_pm_opp_find_freq_floor(dev, &freq);
+		if (!IS_ERR(opp)) {
+			gpu->fast_rate = freq;
+			dev_pm_opp_put(opp);
+		}
+	}
+
+	if (!gpu->fast_rate) {
+		dev_warn(dev,
+			"Could not find a clock rate. Using a reasonable default\n");
+		/* Pick a suitably safe clock speed for any target */
+		gpu->fast_rate = 200000000;
+	}
+
+	DBG("fast_rate=%u, slow_rate=27000000", gpu->fast_rate);
+
+	return 0;
+}
+
+int adreno_gpu_init(struct drm_device *drm, struct platform_device *pdev,
+		struct adreno_gpu *adreno_gpu,
+		const struct adreno_gpu_funcs *funcs, int nr_rings)
+{
+	struct adreno_platform_config *config = pdev->dev.platform_data;
+	struct msm_gpu_config adreno_gpu_config  = { 0 };
+	struct msm_gpu *gpu = &adreno_gpu->base;
+
+	adreno_gpu->funcs = funcs;
+	adreno_gpu->info = adreno_info(config->rev);
+	adreno_gpu->gmem = adreno_gpu->info->gmem;
+	adreno_gpu->revn = adreno_gpu->info->revn;
+	adreno_gpu->rev = config->rev;
+
+	adreno_gpu_config.ioname = "kgsl_3d0_reg_memory";
+	adreno_gpu_config.irqname = "kgsl_3d0_irq";
+
+	adreno_gpu_config.va_start = SZ_16M;
+	adreno_gpu_config.va_end = 0xffffffff;
+
+	adreno_gpu_config.nr_rings = nr_rings;
+
+	adreno_get_pwrlevels(&pdev->dev, gpu);
+
+	pm_runtime_set_autosuspend_delay(&pdev->dev,
+		adreno_gpu->info->inactive_period);
+	pm_runtime_use_autosuspend(&pdev->dev);
+	pm_runtime_enable(&pdev->dev);
+
+	return msm_gpu_init(drm, pdev, &adreno_gpu->base, &funcs->base,
+			adreno_gpu->info->name, &adreno_gpu_config);
+}
+
+void adreno_gpu_cleanup(struct adreno_gpu *adreno_gpu)
+{
+	unsigned int i;
+
+	for (i = 0; i < ARRAY_SIZE(adreno_gpu->info->fw); i++)
+		release_firmware(adreno_gpu->fw[i]);
+
+	msm_gpu_cleanup(&adreno_gpu->base);
+}