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ANDROID: GKI: add vendor hook for sd

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Modify the timing of cmd line and data line in HS mode to improve the compatibility of SD cards that only support HS mode.

Bug: 240510879
Change-Id: Ia1c98845f63b4b051d0b1db80856ee98dc5da8c1
Signed-off-by: Wenchao Chen <wenchao.chen@unisoc.com>
This commit is contained in:
Wenchao Chen
2022-07-28 14:51:37 +08:00
committed by Todd Kjos
parent 68d1090ed0
commit a8c1d81605
3 changed files with 18 additions and 0 deletions
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2
drivers/android/vendor_hooks.c
View File

@@ -389,6 +389,8 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_mmc_attach_sd);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_sdhci_get_cd);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_mmc_gpio_cd_irqt);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_mmc_update_partition_status);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_mmc_sd_update_cmdline_timing);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_mmc_sd_update_dataline_timing);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_cfg80211_set_context);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_cfg80211_get_context);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_mem_cgroup_id_remove);

8
drivers/mmc/core/sd.c
View File

@@ -1519,6 +1519,10 @@ static int mmc_sd_init_card(struct mmc_host *host, u32 ocr,
*/
mmc_set_clock(host, mmc_sd_get_max_clock(card));
trace_android_vh_mmc_sd_update_cmdline_timing(card, &err);
if (err)
goto free_card;
/*
* Switch to wider bus (if supported).
*/
@@ -1530,6 +1534,10 @@ static int mmc_sd_init_card(struct mmc_host *host, u32 ocr,
mmc_set_bus_width(host, MMC_BUS_WIDTH_4);
}
trace_android_vh_mmc_sd_update_dataline_timing(card, &err);
if (err)
goto free_card;
}
if (!oldcard) {

8
include/trace/hooks/mmc.h
View File

@@ -57,6 +57,14 @@ DECLARE_HOOK(android_vh_mmc_update_partition_status,
TP_PROTO(struct mmc_card *card),
TP_ARGS(card));
DECLARE_HOOK(android_vh_mmc_sd_update_cmdline_timing,
TP_PROTO(struct mmc_card *card, int *err),
TP_ARGS(card, err));
DECLARE_HOOK(android_vh_mmc_sd_update_dataline_timing,
TP_PROTO(struct mmc_card *card, int *err),
TP_ARGS(card, err));
#endif /* _TRACE_HOOK_MMC_H */
/* This part must be outside protection */
#include <trace/define_trace.h>