[PATCH RFC 09/11] media: rockchip: rkisp1: make some isp-stats functions variable

[Heiko Stuebner]

From: Heiko Stuebner <heiko.stuebner at theobroma-systems.com>

The isp block evolved in subsequent socs, so some functions
will behave differently on newer variants.

Therefore make it possible to override the needed stats functions.

Signed-off-by: Heiko Stuebner <heiko.stuebner at theobroma-systems.com>
---
 .../platform/rockchip/rkisp1/rkisp1-common.h  | 17 +++++++++++++
 .../platform/rockchip/rkisp1/rkisp1-stats.c   | 24 +++++++++++++++----
 2 files changed, 36 insertions(+), 5 deletions(-)

diff --git a/drivers/media/platform/rockchip/rkisp1/rkisp1-common.h b/drivers/media/platform/rockchip/rkisp1/rkisp1-common.h
index 4034a05ef9d2..be0ae02165c9 100644
--- a/drivers/media/platform/rockchip/rkisp1/rkisp1-common.h
+++ b/drivers/media/platform/rockchip/rkisp1/rkisp1-common.h
@@ -240,6 +240,21 @@ struct rkisp1_capture {
 	} pix;
 };
 
+struct rkisp1_stats;
+struct rkisp1_stats_ops {
+	void (*get_awb_meas)(struct rkisp1_stats *stats,
+			     struct rkisp1_stat_buffer *pbuf);
+	void (*get_aec_meas)(struct rkisp1_stats *stats,
+			     struct rkisp1_stat_buffer *pbuf);
+	void (*get_hst_meas)(struct rkisp1_stats *stats,
+			     struct rkisp1_stat_buffer *pbuf);
+};
+
+struct rkisp1_stats_config {
+	const int ae_mean_max;
+	const int hist_bin_n_max;
+};
+
 /*
  * struct rkisp1_stats - ISP Statistics device
  *
@@ -252,6 +267,8 @@ struct rkisp1_capture {
 struct rkisp1_stats {
 	struct rkisp1_vdev_node vnode;
 	struct rkisp1_device *rkisp1;
+	struct rkisp1_stats_ops *ops;
+	struct rkisp1_stats_config *config;
 
 	spinlock_t lock; /* locks the buffers list 'stats' */
 	struct list_head stat;
diff --git a/drivers/media/platform/rockchip/rkisp1/rkisp1-stats.c b/drivers/media/platform/rockchip/rkisp1/rkisp1-stats.c
index 3ddab8fa8f2d..7136292039f6 100644
--- a/drivers/media/platform/rockchip/rkisp1/rkisp1-stats.c
+++ b/drivers/media/platform/rockchip/rkisp1/rkisp1-stats.c
@@ -203,7 +203,7 @@ static void rkisp1_stats_get_aec_meas(struct rkisp1_stats *stats,
 	unsigned int i;
 
 	pbuf->meas_type |= RKISP1_CIF_ISP_STAT_AUTOEXP;
-	for (i = 0; i < RKISP1_CIF_ISP_AE_MEAN_MAX; i++)
+	for (i = 0; i < stats->config->ae_mean_max; i++)
 		pbuf->params.ae.exp_mean[i] =
 			(u8)rkisp1_read(rkisp1,
 					RKISP1_CIF_ISP_EXP_MEAN_00 + i * 4);
@@ -233,7 +233,7 @@ static void rkisp1_stats_get_hst_meas(struct rkisp1_stats *stats,
 	unsigned int i;
 
 	pbuf->meas_type |= RKISP1_CIF_ISP_STAT_HIST;
-	for (i = 0; i < RKISP1_CIF_ISP_HIST_BIN_N_MAX; i++)
+	for (i = 0; i < stats->config->hist_bin_n_max; i++)
 		pbuf->params.hist.hist_bins[i] =
 			(u8)rkisp1_read(rkisp1,
 					RKISP1_CIF_ISP_HIST_BIN_0 + i * 4);
@@ -286,6 +286,17 @@ static void rkisp1_stats_get_bls_meas(struct rkisp1_stats *stats,
 	}
 }
 
+static struct rkisp1_stats_ops rkisp1_stats_ops = {
+	.get_awb_meas = rkisp1_stats_get_awb_meas,
+	.get_aec_meas = rkisp1_stats_get_aec_meas,
+	.get_hst_meas = rkisp1_stats_get_hst_meas,
+};
+
+static struct rkisp1_stats_config rkisp1_stats_config = {
+	.ae_mean_max = 25,
+	.hist_bin_n_max = 16,
+};
+
 static void
 rkisp1_stats_send_measurement(struct rkisp1_stats *stats, u32 isp_ris)
 {
@@ -308,18 +319,18 @@ rkisp1_stats_send_measurement(struct rkisp1_stats *stats, u32 isp_ris)
 		(struct rkisp1_stat_buffer *)(cur_buf->vaddr);
 
 	if (isp_ris & RKISP1_CIF_ISP_AWB_DONE)
-		rkisp1_stats_get_awb_meas(stats, cur_stat_buf);
+		stats->ops->get_awb_meas(stats, cur_stat_buf);
 
 	if (isp_ris & RKISP1_CIF_ISP_AFM_FIN)
 		rkisp1_stats_get_afc_meas(stats, cur_stat_buf);
 
 	if (isp_ris & RKISP1_CIF_ISP_EXP_END) {
-		rkisp1_stats_get_aec_meas(stats, cur_stat_buf);
+		stats->ops->get_aec_meas(stats, cur_stat_buf);
 		rkisp1_stats_get_bls_meas(stats, cur_stat_buf);
 	}
 
 	if (isp_ris & RKISP1_CIF_ISP_HIST_MEASURE_RDY)
-		rkisp1_stats_get_hst_meas(stats, cur_stat_buf);
+		stats->ops->get_hst_meas(stats, cur_stat_buf);
 
 	vb2_set_plane_payload(&cur_buf->vb.vb2_buf, 0,
 			      sizeof(struct rkisp1_stat_buffer));
@@ -353,6 +364,9 @@ static void rkisp1_init_stats(struct rkisp1_stats *stats)
 		V4L2_META_FMT_RK_ISP1_STAT_3A;
 	stats->vdev_fmt.fmt.meta.buffersize =
 		sizeof(struct rkisp1_stat_buffer);
+
+	stats->ops = &rkisp1_stats_ops;
+	stats->config = &rkisp1_stats_config;
 }
 
 int rkisp1_stats_register(struct rkisp1_device *rkisp1)
-- 
2.29.2