From 1b9c44163036d1c28e55d508ffe6d33492e92569 Mon Sep 17 00:00:00 2001 From: Koji Matsuoka Date: Thu, 7 Dec 2017 20:10:39 +0900 Subject: [PATCH 043/122] drm/bridge: adv7511: Add frequency and vrefresh limitation option This patch adds processing of frequency and vrefresh to ADV7511. Signed-off-by: Koji Matsuoka --- drivers/gpu/drm/bridge/adv7511/adv7511.h | 7 +++++++ drivers/gpu/drm/bridge/adv7511/adv7511_drv.c | 22 ++++++++++++++++++++++ 2 files changed, 29 insertions(+) diff --git a/drivers/gpu/drm/bridge/adv7511/adv7511.h b/drivers/gpu/drm/bridge/adv7511/adv7511.h index 73d8ccb..8a30267 100644 --- a/drivers/gpu/drm/bridge/adv7511/adv7511.h +++ b/drivers/gpu/drm/bridge/adv7511/adv7511.h @@ -271,6 +271,8 @@ enum adv7511_sync_polarity { * @sync_pulse: Select the sync pulse * @vsync_polarity: vsync input signal configuration * @hsync_polarity: hsync input signal configuration + * @limit_vrefresh_option: limit vrefresh option + * @limit_freq_option: limit frequency option */ struct adv7511_link_config { unsigned int input_color_depth; @@ -285,6 +287,9 @@ struct adv7511_link_config { enum adv7511_input_sync_pulse sync_pulse; enum adv7511_sync_polarity vsync_polarity; enum adv7511_sync_polarity hsync_polarity; + + unsigned int limit_vrefresh_option; + unsigned int limit_freq_option; }; /** @@ -354,6 +359,8 @@ struct adv7511 { enum adv7511_sync_polarity vsync_polarity; enum adv7511_sync_polarity hsync_polarity; bool rgb; + unsigned int limit_vref; + unsigned int limit_freq; struct gpio_desc *gpio_pd; diff --git a/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c b/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c index 808021f..470be69 100644 --- a/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c +++ b/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c @@ -323,6 +323,8 @@ static void adv7511_set_link_config(struct adv7511 *adv7511, adv7511->hsync_polarity = config->hsync_polarity; adv7511->vsync_polarity = config->vsync_polarity; adv7511->rgb = config->input_colorspace == HDMI_COLORSPACE_RGB; + adv7511->limit_vref = config->limit_freq_option; + adv7511->limit_freq = config->limit_vrefresh_option; } static void __adv7511_power_on(struct adv7511 *adv7511) @@ -672,6 +674,16 @@ static enum drm_mode_status adv7511_mode_valid(struct adv7511 *adv7511, if (mode->clock > 165000) return MODE_CLOCK_HIGH; + if (adv7511->limit_freq) { + if (mode->clock > (adv7511->limit_freq / 1000)) + return MODE_CLOCK_HIGH; + } + + if (adv7511->limit_vref) { + if (drm_mode_vrefresh(mode) < adv7511->limit_vref) + return MODE_BAD; + } + return MODE_OK; } @@ -1089,6 +1101,16 @@ static int adv7511_parse_dt(struct device_node *np, config->vsync_polarity = ADV7511_SYNC_POLARITY_PASSTHROUGH; config->hsync_polarity = ADV7511_SYNC_POLARITY_PASSTHROUGH; + ret = of_property_read_u32(np, "limit-frequency", + &config->limit_vrefresh_option); + if (ret < 0) + config->limit_vrefresh_option = 0; + + ret = of_property_read_u32(np, "lower-refresh", + &config->limit_freq_option); + if (ret < 0) + config->limit_freq_option = 0; + return 0; } -- 2.7.4