diff options
| -rw-r--r-- | drivers/mxc/ipu3/ipu_disp.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/drivers/mxc/ipu3/ipu_disp.c b/drivers/mxc/ipu3/ipu_disp.c index 1135fcbaf3c2..505d3f7d84d7 100644 --- a/drivers/mxc/ipu3/ipu_disp.c +++ b/drivers/mxc/ipu3/ipu_disp.c @@ -795,6 +795,28 @@ void _ipu_dp_set_csc_coefficients(ipu_channel_t channel, int32_t param[][3]) } /*! + * This function is called to adapt synchronous LCD panel to IPU restriction. + * + */ +void adapt_panel_to_ipu_restricitions(uint16_t *pixel_clk, + uint16_t width, uint16_t height, + uint16_t h_start_width, + uint16_t h_end_width, + uint16_t v_start_width, + uint16_t *v_end_width) +{ + if (*v_end_width < 2) { + uint16_t total_width = width + h_start_width + h_end_width; + uint16_t total_height_old = height + v_start_width + (*v_end_width); + uint16_t total_height_new = height + v_start_width + 2; + *v_end_width = 2; + *pixel_clk = (*pixel_clk) * total_width * total_height_new / + (total_width * total_height_old); + dev_err(g_ipu_dev, "WARNING: adapt panel end blank lines\n"); + } +} + +/*! * This function is called to initialize a synchronous LCD panel. * * @param disp The DI the panel is attached to. @@ -855,6 +877,9 @@ int32_t ipu_init_sync_panel(int disp, uint32_t pixel_clk, if ((v_sync_width == 0) || (h_sync_width == 0)) return EINVAL; + adapt_panel_to_ipu_restricitions(&pixel_clk, width, height, + h_start_width, h_end_width, + v_start_width, &v_end_width); h_total = width + h_sync_width + h_start_width + h_end_width; v_total = height + v_sync_width + v_start_width + v_end_width; |