static unsigned int sdhci_s3c_get_max_clk(struct sdhci_host *host)
{
struct sdhci_s3c *ourhost = to_s3c(host);
- struct clk *busclk;
- unsigned int rate, max;
- int clk;
+ unsigned long rate, max = 0;
+ int src;
/* note, a reset will reset the clock source */
sdhci_s3c_check_sclk(host);
- for (max = 0, clk = 0; clk < MAX_BUS_CLK; clk++) {
- busclk = ourhost->clk_bus[clk];
- if (!busclk)
- continue;
- rate = clk_get_rate(busclk);
+ for (src = 0; src < MAX_BUS_CLK; src++) {
+ rate = ourhost->clk_rates[src];
if (rate > max)
max = rate;
}
static unsigned int sdhci_s3c_get_min_clock(struct sdhci_host *host)
{
struct sdhci_s3c *ourhost = to_s3c(host);
- unsigned int delta, min = UINT_MAX;
+ unsigned long rate, min = ULONG_MAX;
int src;
for (src = 0; src < MAX_BUS_CLK; src++) {
- delta = sdhci_s3c_consider_clock(ourhost, src, 0);
- if (delta == UINT_MAX)
+ rate = ourhost->clk_rates[src] / 256;
+ if (!rate)
continue;
- /* delta is a negative value in this case */
- if (-delta < min)
- min = -delta;
+ if (rate < min)
+ min = rate;
}
+
return min;
}
static unsigned int sdhci_cmu_get_max_clock(struct sdhci_host *host)
{
struct sdhci_s3c *ourhost = to_s3c(host);
+ unsigned long rate, max = 0;
+ int src;
+
+ for (src = 0; src < MAX_BUS_CLK; src++) {
+ struct clk *clk;
+
+ clk = ourhost->clk_bus[src];
+ if (IS_ERR(clk))
+ continue;
+
+ rate = clk_round_rate(clk, ULONG_MAX);
+ if (rate > max)
+ max = rate;
+ }
- return clk_round_rate(ourhost->clk_bus[ourhost->cur_clk], UINT_MAX);
+ return max;
}
/* sdhci_cmu_get_min_clock - callback to get minimal supported clock value. */
static unsigned int sdhci_cmu_get_min_clock(struct sdhci_host *host)
{
struct sdhci_s3c *ourhost = to_s3c(host);
+ unsigned long rate, min = ULONG_MAX;
+ int src;
- /*
- * initial clock can be in the frequency range of
- * 100KHz-400KHz, so we set it as max value.
- */
- return clk_round_rate(ourhost->clk_bus[ourhost->cur_clk], 400000);
+ for (src = 0; src < MAX_BUS_CLK; src++) {
+ struct clk *clk;
+
+ clk = ourhost->clk_bus[src];
+ if (IS_ERR(clk))
+ continue;
+
+ rate = clk_round_rate(clk, 0);
+ if (rate < min)
+ min = rate;
+ }
+
+ return min;
}
/* sdhci_cmu_set_clock - callback on clock change.*/