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arm: socfpga: mmc: Pick the clock from clock manager

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Make the SoCFPGA MMC stub pick clock via the clock manager
frequency accessors instead of hard-coding the frequency.

Also fix calloc() misuse.

Signed-off-by: Pavel Machek <pavel@denx.de>
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Chin Liang See <clsee@altera.com>
Cc: Dinh Nguyen <dinguyen@altera.com>
Cc: Albert Aribaud <albert.u.boot@aribaud.net>
Cc: Tom Rini <trini@ti.com>
Cc: Wolfgang Denk <wd@denx.de>
Cc: Pavel Machek <pavel@denx.de>
Acked-by: Dinh Nguyen <dinguyen@opensource.altera.com>
This commit is contained in:
Pavel Machek 2014-09-08 14:08:45 +02:00 committed by Marek Vasut
parent 036ba54f5b
commit 498d1a62db
1 changed files with 11 additions and 4 deletions
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15
drivers/mmc/socfpga_dw_mmc.c
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@ -7,6 +7,7 @@
#include <common.h>
#include <malloc.h>
#include <dwmmc.h>
#include <errno.h>
#include <asm/arch/dwmmc.h>
#include <asm/arch/clock_manager.h>
#include <asm/arch/system_manager.h>
@ -44,12 +45,18 @@ static void socfpga_dwmci_clksel(struct dwmci_host *host)
int socfpga_dwmmc_init(u32 regbase, int bus_width, int index)
{
struct dwmci_host *host;
unsigned long clk = cm_get_mmc_controller_clk_hz();
if (clk == 0) {
printf("%s: MMC clock is zero!", __func__);
return -EINVAL;
}
/* calloc for zero init */
host = calloc(sizeof(struct dwmci_host), 1);
host = calloc(1, sizeof(struct dwmci_host));
if (!host) {
printf("dwmci_host calloc fail!\n");
return -1;
printf("%s: calloc() failed!\n", __func__);
return -ENOMEM;
}
host->name = "SOCFPGA DWMMC";
@ -58,7 +65,7 @@ int socfpga_dwmmc_init(u32 regbase, int bus_width, int index)
host->clksel = socfpga_dwmci_clksel;
host->dev_index = index;
/* fixed clock divide by 4 which due to the SDMMC wrapper */
host->bus_hz = CONFIG_SOCFPGA_DWMMC_BUS_HZ;
host->bus_hz = clk;
host->fifoth_val = MSIZE(0x2) |
RX_WMARK(CONFIG_SOCFPGA_DWMMC_FIFO_DEPTH / 2 - 1) |
TX_WMARK(CONFIG_SOCFPGA_DWMMC_FIFO_DEPTH / 2);