[PATCH v2 6/8] [media] coda: dynamic IRAM setup for decoder

[Philipp Zabel]

Signed-off-by: Philipp Zabel <p.za...@pengutronix.de>
---
 drivers/media/platform/coda.c | 50 +++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 48 insertions(+), 2 deletions(-)

diff --git a/drivers/media/platform/coda.c b/drivers/media/platform/coda.c
index 1f3bd43..856a93e 100644
--- a/drivers/media/platform/coda.c
+++ b/drivers/media/platform/coda.c
@@ -1212,6 +1212,7 @@ static void coda_setup_iram(struct coda_ctx *ctx)
        int ipacdc_size;
        int bitram_size;
        int dbk_size;
+       int ovl_size;
        int mb_width;
        int me_size;
        int size;
@@ -1273,7 +1274,47 @@ static void coda_setup_iram(struct coda_ctx *ctx)
                        size -= ipacdc_size;
                }
 
-               /* OVL disabled for encoder */
+               /* OVL and BTP disabled for encoder */
+       } else if (ctx->inst_type == CODA_INST_DECODER) {
+               struct coda_q_data *q_data_dst;
+               int mb_height;
+
+               q_data_dst = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
+               mb_width = DIV_ROUND_UP(q_data_dst->width, 16);
+               mb_height = DIV_ROUND_UP(q_data_dst->height, 16);
+
+               dbk_size = round_up(256 * mb_width, 1024);
+               if (size >= dbk_size) {
+                       iram_info->axi_sram_use |= CODA7_USE_HOST_DBK_ENABLE;
+                       iram_info->buf_dbk_y_use = dev->iram_paddr;
+                       iram_info->buf_dbk_c_use = dev->iram_paddr +
+                                                  dbk_size / 2;
+                       size -= dbk_size;
+               } else {
+                       goto out;
+               }
+
+               bitram_size = round_up(128 * mb_width, 1024);
+               if (size >= bitram_size) {
+                       iram_info->axi_sram_use |= CODA7_USE_HOST_BIT_ENABLE;
+                       iram_info->buf_bit_use = iram_info->buf_dbk_c_use +
+                                                dbk_size / 2;
+                       size -= bitram_size;
+               } else {
+                       goto out;
+               }
+
+               ipacdc_size = round_up(128 * mb_width, 1024);
+               if (size >= ipacdc_size) {
+                       iram_info->axi_sram_use |= CODA7_USE_HOST_IP_ENABLE;
+                       iram_info->buf_ip_ac_dc_use = iram_info->buf_bit_use +
+                                                     bitram_size;
+                       size -= ipacdc_size;
+               } else {
+                       goto out;
+               }
+
+               ovl_size = round_up(80 * mb_width, 1024);
        }
 
 out:
@@ -1300,7 +1341,12 @@ out:
 
        if (dev->devtype->product == CODA_7541) {
                /* TODO - Enabling these causes picture errors on CODA7541 */
-               if (ctx->inst_type == CODA_INST_ENCODER) {
+               if (ctx->inst_type == CODA_INST_DECODER) {
+                       /* fw 1.4.50 */
+                       iram_info->axi_sram_use &= ~(CODA7_USE_HOST_IP_ENABLE |
+                                                    CODA7_USE_IP_ENABLE);
+               } else {
+                       /* fw 13.4.29 */
                        iram_info->axi_sram_use &= ~(CODA7_USE_HOST_IP_ENABLE |
                                                     CODA7_USE_HOST_DBK_ENABLE |
                                                     CODA7_USE_IP_ENABLE |
-- 
1.8.3.1

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