media: hantro: Convert imx8m_vpu_g2_irq to helper

It turns out that imx8m_vpu_g2_irq() doesn't depend on any platform
specifics and can be used with other G2 platform drivers too.

Move it to common code.
Signed-off-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
Reviewed-by: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

drivers/staging/media/hantro/hantro_g2.c

@@ -24,3 +24,21 @@ void hantro_g2_check_idle(struct hantro_dev *vpu)
 		}
 	}
 }
+
+irqreturn_t hantro_g2_irq(int irq, void *dev_id)
+{
+	struct hantro_dev *vpu = dev_id;
+	enum vb2_buffer_state state;
+	u32 status;
+
+	status = vdpu_read(vpu, G2_REG_INTERRUPT);
+	state = (status & G2_REG_INTERRUPT_DEC_RDY_INT) ?
+		 VB2_BUF_STATE_DONE : VB2_BUF_STATE_ERROR;
+
+	vdpu_write(vpu, 0, G2_REG_INTERRUPT);
+	vdpu_write(vpu, G2_REG_CONFIG_DEC_CLK_GATE_E, G2_REG_CONFIG);
+
+	hantro_irq_done(vpu, state);
+
+	return IRQ_HANDLED;
+}

drivers/staging/media/hantro/hantro_hw.h

@@ -425,5 +425,6 @@ void hantro_g2_vp9_dec_done(struct hantro_ctx *ctx);
 int hantro_vp9_dec_init(struct hantro_ctx *ctx);
 void hantro_vp9_dec_exit(struct hantro_ctx *ctx);
 void hantro_g2_check_idle(struct hantro_dev *vpu);
+irqreturn_t hantro_g2_irq(int irq, void *dev_id);
 
 #endif /* HANTRO_HW_H_ */

drivers/staging/media/hantro/imx8m_vpu_hw.c

@@ -191,24 +191,6 @@ static irqreturn_t imx8m_vpu_g1_irq(int irq, void *dev_id)
 	return IRQ_HANDLED;
 }
 
-static irqreturn_t imx8m_vpu_g2_irq(int irq, void *dev_id)
-{
-	struct hantro_dev *vpu = dev_id;
-	enum vb2_buffer_state state;
-	u32 status;
-
-	status = vdpu_read(vpu, G2_REG_INTERRUPT);
-	state = (status & G2_REG_INTERRUPT_DEC_RDY_INT) ?
-		 VB2_BUF_STATE_DONE : VB2_BUF_STATE_ERROR;
-
-	vdpu_write(vpu, 0, G2_REG_INTERRUPT);
-	vdpu_write(vpu, G2_REG_CONFIG_DEC_CLK_GATE_E, G2_REG_CONFIG);
-
-	hantro_irq_done(vpu, state);
-
-	return IRQ_HANDLED;
-}
-
 static int imx8mq_vpu_hw_init(struct hantro_dev *vpu)
 {
 	vpu->ctrl_base = vpu->reg_bases[vpu->variant->num_regs - 1];
@@ -280,7 +262,7 @@ static const struct hantro_irq imx8mq_irqs[] = {
 };
 
 static const struct hantro_irq imx8mq_g2_irqs[] = {
-	{ "g2", imx8m_vpu_g2_irq },
+	{ "g2", hantro_g2_irq },
 };
 
 static const char * const imx8mq_clk_names[] = { "g1", "g2", "bus" };