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mmc: exynos_dw_mmc: use the exynos specific data structure

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Clksel value is exynos specific value.
It removed "clksel_val" into dwmci_host and created the
"dwmci_exynos_priv_data" structure for exynos specific data.

Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
This commit is contained in:
Jaehoon Chung 2015-02-04 15:48:40 +09:00 committed by Pantelis Antoniou
parent 3a33bb1874
commit 5dab81cea5
2 changed files with 48 additions and 14 deletions
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60
drivers/mmc/exynos_dw_mmc.c
View File

@ -19,8 +19,13 @@
#define DWMMC_MAX_CH_NUM 4
#define DWMMC_MAX_FREQ 52000000
#define DWMMC_MIN_FREQ 400000
#define DWMMC_MMC0_CLKSEL_VAL 0x03030001
#define DWMMC_MMC2_CLKSEL_VAL 0x03020001
#define DWMMC_MMC0_SDR_TIMING_VAL 0x03030001
#define DWMMC_MMC2_SDR_TIMING_VAL 0x03020001
/* Exynos implmentation specific drver private data */
struct dwmci_exynos_priv_data {
u32 sdr_timing;
};
/*
* Function used as callback function to initialise the
@ -28,7 +33,9 @@
*/
static void exynos_dwmci_clksel(struct dwmci_host *host)
{
dwmci_writel(host, DWMCI_CLKSEL, host->clksel_val);
struct dwmci_exynos_priv_data *priv = host->priv;
dwmci_writel(host, DWMCI_CLKSEL, priv->sdr_timing);
}
unsigned int exynos_dwmci_get_clk(struct dwmci_host *host)
@ -55,6 +62,8 @@ unsigned int exynos_dwmci_get_clk(struct dwmci_host *host)
static void exynos_dwmci_board_init(struct dwmci_host *host)
{
struct dwmci_exynos_priv_data *priv = host->priv;
if (host->quirks & DWMCI_QUIRK_DISABLE_SMU) {
dwmci_writel(host, EMMCP_MPSBEGIN0, 0);
dwmci_writel(host, EMMCP_SEND0, 0);
@ -65,8 +74,8 @@ static void exynos_dwmci_board_init(struct dwmci_host *host)
MPSCTRL_NON_SECURE_WRITE_BIT | MPSCTRL_VALID);
}
/* Set to clksel_val at initial time */
if (host->clksel_val)
/* Set to timing value at initial time */
if (priv->sdr_timing)
exynos_dwmci_clksel(host);
}
@ -74,6 +83,7 @@ static int exynos_dwmci_core_init(struct dwmci_host *host, int index)
{
unsigned int div;
unsigned long freq, sclk;
struct dwmci_exynos_priv_data *priv = host->priv;
if (host->bus_hz)
freq = host->bus_hz;
@ -92,11 +102,11 @@ static int exynos_dwmci_core_init(struct dwmci_host *host, int index)
#endif
host->board_init = exynos_dwmci_board_init;
if (!host->clksel_val) {
if (!priv->sdr_timing) {
if (index == 0)
host->clksel_val = DWMMC_MMC0_CLKSEL_VAL;
priv->sdr_timing = DWMMC_MMC0_SDR_TIMING_VAL;
else if (index == 2)
host->clksel_val = DWMMC_MMC2_CLKSEL_VAL;
priv->sdr_timing = DWMMC_MMC2_SDR_TIMING_VAL;
}
host->caps = MMC_MODE_DDR_52MHz;
@ -122,6 +132,7 @@ static int exynos_dwmci_core_init(struct dwmci_host *host, int index)
int exynos_dwmci_add_port(int index, u32 regbase, int bus_width, u32 clksel)
{
struct dwmci_host *host = NULL;
struct dwmci_exynos_priv_data *priv;
host = malloc(sizeof(struct dwmci_host));
if (!host) {
@ -129,11 +140,19 @@ int exynos_dwmci_add_port(int index, u32 regbase, int bus_width, u32 clksel)
return -ENOMEM;
}
priv = malloc(sizeof(struct dwmci_exynos_priv_data));
if (!priv) {
error("dwmci_exynos_priv_data malloc fail!\n");
return -ENOMEM;
}
host->ioaddr = (void *)regbase;
host->buswidth = bus_width;
if (clksel)
host->clksel_val = clksel;
priv->sdr_timing = clksel;
host->priv = priv;
return exynos_dwmci_core_init(host, index);
}
@ -161,7 +180,14 @@ static int exynos_dwmci_get_config(const void *blob, int node,
struct dwmci_host *host)
{
int err = 0;
u32 base, clksel_val, timing[3];
u32 base, timing[3];
struct dwmci_exynos_priv_data *priv;
priv = malloc(sizeof(struct dwmci_exynos_priv_data));
if (!priv) {
error("dwmci_exynos_priv_data malloc fail!\n");
return -ENOMEM;
}
/* Extract device id for each mmc channel */
host->dev_id = pinmux_decode_periph_id(blob, node);
@ -194,16 +220,24 @@ static int exynos_dwmci_get_config(const void *blob, int node,
return -EINVAL;
}
clksel_val = (DWMCI_SET_SAMPLE_CLK(timing[0]) |
priv->sdr_timing = (DWMCI_SET_SAMPLE_CLK(timing[0]) |
DWMCI_SET_DRV_CLK(timing[1]) |
DWMCI_SET_DIV_RATIO(timing[2]));
if (clksel_val)
host->clksel_val = clksel_val;
/* sdr_timing didn't assigned anything, use the default value */
if (!priv->sdr_timing) {
if (host->dev_index == 0)
priv->sdr_timing = DWMMC_MMC0_SDR_TIMING_VAL;
else if (host->dev_index == 2)
priv->sdr_timing = DWMMC_MMC2_SDR_TIMING_VAL;
}
host->fifoth_val = fdtdec_get_int(blob, node, "fifoth_val", 0);
host->bus_hz = fdtdec_get_int(blob, node, "bus_hz", 0);
host->div = fdtdec_get_int(blob, node, "div", 0);
host->priv = priv;
return 0;
}

2
include/dwmmc.h
View File

@ -141,9 +141,9 @@ struct dwmci_host {
int dev_index;
int dev_id;
int buswidth;
u32 clksel_val;
u32 fifoth_val;
struct mmc *mmc;
void *priv;
void (*clksel)(struct dwmci_host *host);
void (*board_init)(struct dwmci_host *host);