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mmc: dw_mmc: k3: remove clk_table

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Remove clk_table and directly use ios->clock as clock source rate.
Abstract init clock rate and max clock limitation in clk.c

Signed-off-by: Zhangfei Gao <zhangfei.gao@linaro.org>
Acked-by: Seungwon Jeon <tgih.jun@samsung.com>
Signed-off-by: Chris Ball <chris@printf.net>
This commit is contained in:
Zhangfei Gao
2014-01-13 17:14:29 +08:00
committed by Chris Ball
parent 7cf347bd20
commit 0e662440e9
2 changed files with 2 additions and 53 deletions
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41
drivers/mmc/host/dw_mmc-k3.c
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@@ -18,56 +18,19 @@
#include "dw_mmc.h"
#include "dw_mmc-pltfm.h"
#define MAX_NUMS 10
struct dw_mci_k3_priv_data {
u32 clk_table[MAX_NUMS];
};
static void dw_mci_k3_set_ios(struct dw_mci *host, struct mmc_ios *ios)
{
struct dw_mci_k3_priv_data *priv = host->priv;
u32 rate = priv->clk_table[ios->timing];
int ret;
if (!rate) {
dev_warn(host->dev,
"no specified rate in timing %u\n", ios->timing);
return;
}
ret = clk_set_rate(host->ciu_clk, rate);
ret = clk_set_rate(host->ciu_clk, ios->clock);
if (ret)
dev_warn(host->dev, "failed to set clock rate %uHz\n", rate);
dev_warn(host->dev, "failed to set rate %uHz\n", ios->clock);
host->bus_hz = clk_get_rate(host->ciu_clk);
}
static int dw_mci_k3_parse_dt(struct dw_mci *host)
{
struct dw_mci_k3_priv_data *priv;
struct device_node *node = host->dev->of_node;
struct property *prop;
const __be32 *cur;
u32 val, num = 0;
priv = devm_kzalloc(host->dev, sizeof(*priv), GFP_KERNEL);
if (!priv) {
dev_err(host->dev, "mem alloc failed for private data\n");
return -ENOMEM;
}
host->priv = priv;
of_property_for_each_u32(node, "clock-freq-table", prop, cur, val) {
if (num >= MAX_NUMS)
break;
priv->clk_table[num++] = val;
}
return 0;
}
static const struct dw_mci_drv_data k3_drv_data = {
.set_ios = dw_mci_k3_set_ios,
.parse_dt = dw_mci_k3_parse_dt,
};
static const struct of_device_id dw_mci_k3_match[] = {