Bindings are based on u-boot implementation, however they are stored in subnodes, providing support for more than one bank.
Since the driver now does more than suspend-resume support, dependency on CONFIG_PM is removed. Signed-off-by: Pavel Fedin <[email protected]> --- arch/arm/mach-exynos/Kconfig | 2 +- drivers/soc/samsung/Kconfig | 2 +- drivers/soc/samsung/exynos-srom.c | 42 ++++++++++++++++++++++++++++++++++++++- 3 files changed, 43 insertions(+), 3 deletions(-) diff --git a/arch/arm/mach-exynos/Kconfig b/arch/arm/mach-exynos/Kconfig index 83c85f5..c22dc42 100644 --- a/arch/arm/mach-exynos/Kconfig +++ b/arch/arm/mach-exynos/Kconfig @@ -16,7 +16,7 @@ menuconfig ARCH_EXYNOS select ARM_GIC select COMMON_CLK_SAMSUNG select EXYNOS_THERMAL - select EXYNOS_SROM if PM + select EXYNOS_SROM select HAVE_ARM_SCU if SMP select HAVE_S3C2410_I2C if I2C select HAVE_S3C2410_WATCHDOG if WATCHDOG diff --git a/drivers/soc/samsung/Kconfig b/drivers/soc/samsung/Kconfig index 2833b5b..ea4bc2a 100644 --- a/drivers/soc/samsung/Kconfig +++ b/drivers/soc/samsung/Kconfig @@ -8,6 +8,6 @@ config SOC_SAMSUNG config EXYNOS_SROM bool - depends on ARM && ARCH_EXYNOS && PM + depends on ARM && ARCH_EXYNOS endmenu diff --git a/drivers/soc/samsung/exynos-srom.c b/drivers/soc/samsung/exynos-srom.c index 57a232d..6c8c56a 100644 --- a/drivers/soc/samsung/exynos-srom.c +++ b/drivers/soc/samsung/exynos-srom.c @@ -67,9 +67,46 @@ static struct exynos_srom_reg_dump *exynos_srom_alloc_reg_dump( return rd; } +static int decode_sromc(struct exynos_srom *srom, struct device_node *np) +{ + u32 bank, width; + u32 timing[7]; + u32 bw; + + if (of_property_read_u32(np, "bank", &bank)) + return -ENXIO; + if (of_property_read_u32(np, "width", &width)) + width = 1; + if (of_property_read_u32_array(np, "srom-timing", timing, 7)) { + pr_err("Could not decode SROMC configuration\n"); + return -ENXIO; + } + + bank *= 4; /* Convert bank into shift/offset */ + + bw = 1 << EXYNOS_SROM_BW__BYTEENABLE__SHIFT; + if (width == 2) + bw |= 1 << EXYNOS_SROM_BW__DATAWIDTH__SHIFT; + bw <<= bank; + bw |= __raw_readl(srom->reg_base + EXYNOS_SROM_BW) & + ~(EXYNOS_SROM_BW__CS_MASK << bank); + __raw_writel(bw, srom->reg_base + EXYNOS_SROM_BW); + + __raw_writel((timing[0] << EXYNOS_SROM_BCX__PMC__SHIFT) | + (timing[1] << EXYNOS_SROM_BCX__TACP__SHIFT) | + (timing[2] << EXYNOS_SROM_BCX__TCAH__SHIFT) | + (timing[3] << EXYNOS_SROM_BCX__TCOH__SHIFT) | + (timing[4] << EXYNOS_SROM_BCX__TACC__SHIFT) | + (timing[5] << EXYNOS_SROM_BCX__TCOS__SHIFT) | + (timing[6] << EXYNOS_SROM_BCX__TACS__SHIFT), + srom->reg_base + EXYNOS_SROM_BC0 + bank); + + return 0; +} + static int exynos_srom_probe(struct platform_device *pdev) { - struct device_node *np; + struct device_node *np, *child; struct exynos_srom *srom; struct device *dev = &pdev->dev; @@ -100,6 +137,9 @@ static int exynos_srom_probe(struct platform_device *pdev) return -ENOMEM; } + for_each_child_of_node(np, child) + decode_sromc(srom, child); + return 0; } -- 2.4.4 -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
