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gpu: host1x: Add host1x driver

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Add host1x, the driver for host1x and its client unit 2D. The Tegra
host1x module is the DMA engine for register access to Tegra's
graphics- and multimedia-related modules. The modules served by
host1x are referred to as clients. host1x includes some other
functionality, such as synchronization.

Signed-off-by: Arto Merilainen <amerilainen@nvidia.com>
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-by: Thierry Reding <thierry.reding@avionic-design.de>
Tested-by: Thierry Reding <thierry.reding@avionic-design.de>
Tested-by: Erik Faye-Lund <kusmabite@gmail.com>
Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
This commit is contained in:
Terje Bergstrom
2013-03-22 16:34:01 +02:00
committed by Thierry Reding
parent e1adc78caf
commit 7547168743
15 changed files with 957 additions and 0 deletions
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96
drivers/gpu/host1x/dev.h Normal file
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/*
* Copyright (c) 2012-2013, NVIDIA Corporation.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope 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/>.
*/
#ifndef HOST1X_DEV_H
#define HOST1X_DEV_H
#include <linux/platform_device.h>
#include <linux/device.h>
#include "syncpt.h"
struct host1x_syncpt;
struct host1x_syncpt_ops {
void (*restore)(struct host1x_syncpt *syncpt);
void (*restore_wait_base)(struct host1x_syncpt *syncpt);
void (*load_wait_base)(struct host1x_syncpt *syncpt);
u32 (*load)(struct host1x_syncpt *syncpt);
void (*cpu_incr)(struct host1x_syncpt *syncpt);
int (*patch_wait)(struct host1x_syncpt *syncpt, void *patch_addr);
};
struct host1x_info {
int nb_channels; /* host1x: num channels supported */
int nb_pts; /* host1x: num syncpoints supported */
int nb_bases; /* host1x: num syncpoints supported */
int nb_mlocks; /* host1x: number of mlocks */
int (*init)(struct host1x *); /* initialize per SoC ops */
int sync_offset;
};
struct host1x {
const struct host1x_info *info;
void __iomem *regs;
struct host1x_syncpt *syncpt;
struct device *dev;
struct clk *clk;
const struct host1x_syncpt_ops *syncpt_op;
};
void host1x_sync_writel(struct host1x *host1x, u32 r, u32 v);
u32 host1x_sync_readl(struct host1x *host1x, u32 r);
static inline void host1x_hw_syncpt_restore(struct host1x *host,
struct host1x_syncpt *sp)
{
host->syncpt_op->restore(sp);
}
static inline void host1x_hw_syncpt_restore_wait_base(struct host1x *host,
struct host1x_syncpt *sp)
{
host->syncpt_op->restore_wait_base(sp);
}
static inline void host1x_hw_syncpt_load_wait_base(struct host1x *host,
struct host1x_syncpt *sp)
{
host->syncpt_op->load_wait_base(sp);
}
static inline u32 host1x_hw_syncpt_load(struct host1x *host,
struct host1x_syncpt *sp)
{
return host->syncpt_op->load(sp);
}
static inline void host1x_hw_syncpt_cpu_incr(struct host1x *host,
struct host1x_syncpt *sp)
{
host->syncpt_op->cpu_incr(sp);
}
static inline int host1x_hw_syncpt_patch_wait(struct host1x *host,
struct host1x_syncpt *sp,
void *patch_addr)
{
return host->syncpt_op->patch_wait(sp, patch_addr);
}
#endif