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ddr: altera: sdram: Clean up sdram_mmr_init_full() part 6

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Pull out the block of register programming into a separate function.

Signed-off-by: Marek Vasut <marex@denx.de>
This commit is contained in:
Marek Vasut 2015-08-01 21:26:55 +02:00
parent 9d6b012c72
commit 1a302a4525
1 changed files with 21 additions and 10 deletions
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31
drivers/ddr/altera/sdram.c
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@ -514,20 +514,17 @@ static u32 sdr_get_addr_rw(struct socfpga_sdram_config *cfg)
return dram_addrw | (rows << SDR_CTRLGRP_DRAMADDRW_ROWBITS_LSB); return dram_addrw | (rows << SDR_CTRLGRP_DRAMADDRW_ROWBITS_LSB);
} }
/* Function to initialize SDRAM MMR */ /**
unsigned sdram_mmr_init_full(unsigned int sdr_phy_reg) * sdr_load_regs() - Load SDRAM controller registers
* @cfg: SDRAM controller configuration data
*
* This function loads the register values into the SDRAM controller block.
*/
static void sdr_load_regs(struct socfpga_sdram_config *cfg)
{ {
unsigned long status = 0;
struct socfpga_sdram_config *cfg = &sdram_config;
const unsigned int rows =
(cfg->dram_addrw & SDR_CTRLGRP_DRAMADDRW_ROWBITS_MASK) >>
SDR_CTRLGRP_DRAMADDRW_ROWBITS_LSB;
const u32 ctrl_cfg = sdr_get_ctrlcfg(cfg); const u32 ctrl_cfg = sdr_get_ctrlcfg(cfg);
const u32 dram_addrw = sdr_get_addr_rw(cfg); const u32 dram_addrw = sdr_get_addr_rw(cfg);
writel(rows, &sysmgr_regs->iswgrp_handoff[4]);
debug("\nConfiguring CTRLCFG\n"); debug("\nConfiguring CTRLCFG\n");
writel(ctrl_cfg, &sdr_ctrl->ctrl_cfg); writel(ctrl_cfg, &sdr_ctrl->ctrl_cfg);
@ -616,6 +613,20 @@ unsigned sdram_mmr_init_full(unsigned int sdr_phy_reg)
debug("Configuring DRAMODT\n"); debug("Configuring DRAMODT\n");
writel(cfg->dram_odt, &sdr_ctrl->dram_odt); writel(cfg->dram_odt, &sdr_ctrl->dram_odt);
}
/* Function to initialize SDRAM MMR */
unsigned sdram_mmr_init_full(unsigned int sdr_phy_reg)
{
unsigned long status = 0;
struct socfpga_sdram_config *cfg = &sdram_config;
const unsigned int rows =
(cfg->dram_addrw & SDR_CTRLGRP_DRAMADDRW_ROWBITS_MASK) >>
SDR_CTRLGRP_DRAMADDRW_ROWBITS_LSB;
writel(rows, &sysmgr_regs->iswgrp_handoff[4]);
sdr_load_regs(cfg);
/* saving this value to SYSMGR.ISWGRP.HANDOFF.FPGA2SDR */ /* saving this value to SYSMGR.ISWGRP.HANDOFF.FPGA2SDR */
writel(cfg->fpgaport_rst, &sysmgr_regs->iswgrp_handoff[3]); writel(cfg->fpgaport_rst, &sysmgr_regs->iswgrp_handoff[3]);