From: Jayanthi Annadurai <jannadurai@xxxxxxxxxxx>
Add support of CONFIG_MMC_SDHCI_IO_ACCESSORS to allow Marvell
SoC ops for SD6 controller to overwrite the SDHCI IO memory
accessors.
Signed-off-by: Jayanthi Annadurai <jannadurai@xxxxxxxxxxx>
Signed-off-by: Piyush Malgujar <pmalgujar@xxxxxxxxxxx>
---
drivers/mmc/host/sdhci-cadence.c | 59 ++++++++++++++++++++++++++++++++
1 file changed, 59 insertions(+)
diff --git a/drivers/mmc/host/sdhci-cadence.c b/drivers/mmc/host/sdhci-cadence.c
index 8bcf585185053b0afaff2625d62316cec1824fa3..f1e597219c603f3921439cedb22dcb2884abe68d 100644
--- a/drivers/mmc/host/sdhci-cadence.c
+++ b/drivers/mmc/host/sdhci-cadence.c
@@ -448,6 +448,59 @@ static u32 read_dqs_cmd_delay, clk_wrdqs_delay, clk_wr_delay, read_dqs_delay;
static u32 sdhci_cdns_sd6_get_mode(struct sdhci_host *host, unsigned int timing);
+static u32 sdhci_cdns_sd6_readl(struct sdhci_host *host, int reg)
+{
+ return readl(host->ioaddr + reg);
+}
+
+static void sdhci_cdns_sd6_writel(struct sdhci_host *host, u32 val, int reg)
+{
+ writel(val, host->ioaddr + reg);
+}
+
+static u16 sdhci_cdns_sd6_readw(struct sdhci_host *host, int reg)
+{
+ u32 val, regoff;
+
+ regoff = reg & ~3;
+
+ val = readl(host->ioaddr + regoff);
+ if ((reg & 0x3) == 0)
+ return (val & 0xFFFF);
+ else
+ return ((val >> 16) & 0xFFFF);
+}
+
+static void sdhci_cdns_sd6_writew(struct sdhci_host *host, u16 val, int reg)
+{
+ writew(val, host->ioaddr + reg);
+}
+
+static u8 sdhci_cdns_sd6_readb(struct sdhci_host *host, int reg)
+{
+ u32 val, regoff;
+
+ regoff = reg & ~3;
+
+ val = readl(host->ioaddr + regoff);
+ switch (reg & 3) {
+ case 0:
+ return (val & 0xFF);
+ case 1:
+ return ((val >> 8) & 0xFF);
+ case 2:
+ return ((val >> 16) & 0xFF);
+ case 3:
+ return ((val >> 24) & 0xFF);
+ }
+ return 0;
+}
+
+static void sdhci_cdns_sd6_writeb(struct sdhci_host *host, u8 val, int reg)
+{
+ writeb(val, host->ioaddr + reg);
+}
+
static int sdhci_cdns_sd6_phy_lock_dll(struct sdhci_cdns_sd6_phy *phy)
{
u32 delay_element = phy->d.delay_element_org;
@@ -1666,6 +1719,12 @@ static const struct sdhci_ops sdhci_cdns_sd4_ops = {
};
static const struct sdhci_ops sdhci_cdns_sd6_ops = {
+ .read_l = sdhci_cdns_sd6_readl,
+ .write_l = sdhci_cdns_sd6_writel,
+ .read_w = sdhci_cdns_sd6_readw,
+ .write_w = sdhci_cdns_sd6_writew,
+ .read_b = sdhci_cdns_sd6_readb,
+ .write_b = sdhci_cdns_sd6_writeb,
.get_max_clock = sdhci_cdns_get_max_clock,
.set_clock = sdhci_cdns_sd6_set_clock,
.get_timeout_clock = sdhci_cdns_get_timeout_clock,
--
2.17.1
