gpu: host1x: Add channel support

Add support for host1x client modules, and host1x channels to submit
work to the clients.

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>

1 files changed, 17 insertions, 0 deletions

diff --git a/drivers/gpu/host1x/dev.c b/drivers/gpu/host1x/dev.c
index b967f6e8df55..4e522c532bc8 100644
--- a/drivers/gpu/host1x/dev.c
+++ b/drivers/gpu/host1x/dev.c
@@ -29,6 +29,7 @@
 
 #include "dev.h"
 #include "intr.h"
+#include "channel.h"
 #include "hw/host1x01.h"
 
 void host1x_sync_writel(struct host1x *host1x, u32 v, u32 r)
@@ -45,6 +46,16 @@ u32 host1x_sync_readl(struct host1x *host1x, u32 r)
         return readl(sync_regs + r);
 }
 
+void host1x_ch_writel(struct host1x_channel *ch, u32 v, u32 r)
+{
+        writel(v, ch->regs + r);
+}
+
+u32 host1x_ch_readl(struct host1x_channel *ch, u32 r)
+{
+        return readl(ch->regs + r);
+}
+
 static const struct host1x_info host1x01_info = {
         .nb_channels    = 8,
         .nb_pts         = 32,
@@ -112,6 +123,12 @@ static int host1x_probe(struct platform_device *pdev)
                 return err;
         }
 
+        err = host1x_channel_list_init(host);
+        if (err) {
+                dev_err(&pdev->dev, "failed to initialize channel list\n");
+                return err;
+        }
+
         err = clk_prepare_enable(host->clk);
         if (err < 0) {
                 dev_err(&pdev->dev, "failed to enable clock\n");