These two patches introduce several call backs, in order to share sdhci-pxa.
patch 1: move sdhci_priv and sdhci_ops definition to
include/linux/mmc/sdhci.h from drivers/mmc/host/sdhci.h
1. platfrom could directly overwrite sdhci_ops with soc specific ops,
this case occurs at different controller share the same driver, while
different ops they may use, so move sdhci_ops definition to include
2. platform code will use sdhci_priv to access host->private
Patch 2: Introduce several call backs.
pxa955 may require external gpio to detect card insert and remove.
soc_set_ops is used to overwrite host ops directly from platfrom ops.
example in board.c
static unsigned int mmc0_get_ro(struct sdhci_host *host)
{
return 0;
}
static void mmc0_generate_init_clocks_mmp2(struct sdhci_host *host, u8
power_mode)
{
struct sdhci_pxa *pxa = sdhci_priv(host);
i /* do something */
}
static void mmc0_set_ops(struct sdhci_pxa *pxa)
{
pxa->ops->get_ro = mmc0_get_ro;
pxa->ops->platform_send_init_74_clocks = mmp2_send_init_74_clocks;
}
static struct sdhci_pxa_platdata mmp2_sdh_platdata_mmc0 = {
.soc_set_ops = mmc0_set_ops,
.clk_delay_cycles = 0xf,
.soc_set_timing = mmp2_init_sdh,
};
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