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Merge branch 'for-v3.19/gpmc-omap' of github.com:rogerq/linux into omap-for-v3.19/gpmc
Conflicts: arch/arm/mach-omap2/gpmc.c
This commit is contained in:
Tony Lindgren
commit
2dde3bccbf
@ -85,6 +85,8 @@
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#define GPMC_ECC_CTRL_ECCREG8 0x008
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#define GPMC_ECC_CTRL_ECCREG9 0x009
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#define GPMC_CONFIG_LIMITEDADDRESS BIT(1)
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#define GPMC_CONFIG2_CSEXTRADELAY BIT(7)
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#define GPMC_CONFIG3_ADVEXTRADELAY BIT(7)
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#define GPMC_CONFIG4_OEEXTRADELAY BIT(7)
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@ -210,11 +212,6 @@ static unsigned long gpmc_get_fclk_period(void)
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{
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unsigned long rate = clk_get_rate(gpmc_l3_clk);
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if (rate == 0) {
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printk(KERN_WARNING "gpmc_l3_clk not enabled\n");
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return 0;
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}
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rate /= 1000;
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rate = 1000000000 / rate; /* In picoseconds */
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@ -414,13 +411,8 @@ static inline void gpmc_cs_show_timings(int cs, const char *desc)
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}
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#endif
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#ifdef DEBUG
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static int set_gpmc_timing_reg(int cs, int reg, int st_bit, int end_bit,
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int time, const char *name)
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#else
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static int set_gpmc_timing_reg(int cs, int reg, int st_bit, int end_bit,
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int time)
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#endif
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{
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u32 l;
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int ticks, mask, nr_bits;
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@ -430,15 +422,15 @@ static int set_gpmc_timing_reg(int cs, int reg, int st_bit, int end_bit,
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else
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ticks = gpmc_ns_to_ticks(time);
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nr_bits = end_bit - st_bit + 1;
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if (ticks >= 1 << nr_bits) {
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#ifdef DEBUG
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printk(KERN_INFO "GPMC CS%d: %-10s* %3d ns, %3d ticks >= %d\n",
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cs, name, time, ticks, 1 << nr_bits);
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#endif
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mask = (1 << nr_bits) - 1;
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if (ticks > mask) {
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pr_err("%s: GPMC error! CS%d: %s: %d ns, %d ticks > %d\n",
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__func__, cs, name, time, ticks, mask);
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return -1;
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}
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mask = (1 << nr_bits) - 1;
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l = gpmc_cs_read_reg(cs, reg);
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#ifdef DEBUG
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printk(KERN_INFO
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@ -453,16 +445,10 @@ static int set_gpmc_timing_reg(int cs, int reg, int st_bit, int end_bit,
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return 0;
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}
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#ifdef DEBUG
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#define GPMC_SET_ONE(reg, st, end, field) \
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if (set_gpmc_timing_reg(cs, (reg), (st), (end), \
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t->field, #field) < 0) \
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return -1
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#else
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#define GPMC_SET_ONE(reg, st, end, field) \
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if (set_gpmc_timing_reg(cs, (reg), (st), (end), t->field) < 0) \
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return -1
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#endif
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int gpmc_calc_divider(unsigned int sync_clk)
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{
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@ -539,7 +525,7 @@ int gpmc_cs_set_timings(int cs, const struct gpmc_timings *t)
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return 0;
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}
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static int gpmc_cs_enable_mem(int cs, u32 base, u32 size)
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static int gpmc_cs_set_memconf(int cs, u32 base, u32 size)
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{
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u32 l;
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u32 mask;
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@ -563,6 +549,15 @@ static int gpmc_cs_enable_mem(int cs, u32 base, u32 size)
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return 0;
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}
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static void gpmc_cs_enable_mem(int cs)
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{
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u32 l;
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l = gpmc_cs_read_reg(cs, GPMC_CS_CONFIG7);
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l |= GPMC_CONFIG7_CSVALID;
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gpmc_cs_write_reg(cs, GPMC_CS_CONFIG7, l);
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}
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static void gpmc_cs_disable_mem(int cs)
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{
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u32 l;
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@ -693,18 +688,18 @@ static int gpmc_cs_remap(int cs, u32 base)
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gpmc_cs_get_memconf(cs, &old_base, &size);
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if (base == old_base)
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return 0;
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gpmc_cs_disable_mem(cs);
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ret = gpmc_cs_delete_mem(cs);
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if (ret < 0)
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return ret;
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ret = gpmc_cs_insert_mem(cs, base, size);
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if (ret < 0)
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return ret;
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ret = gpmc_cs_enable_mem(cs, base, size);
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if (ret < 0)
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return ret;
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return 0;
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ret = gpmc_cs_set_memconf(cs, base, size);
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return ret;
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}
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int gpmc_cs_request(int cs, unsigned long size, unsigned long *base)
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@ -734,12 +729,17 @@ int gpmc_cs_request(int cs, unsigned long size, unsigned long *base)
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if (r < 0)
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goto out;
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r = gpmc_cs_enable_mem(cs, res->start, resource_size(res));
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/* Disable CS while changing base address and size mask */
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gpmc_cs_disable_mem(cs);
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r = gpmc_cs_set_memconf(cs, res->start, resource_size(res));
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if (r < 0) {
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release_resource(res);
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goto out;
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}
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/* Enable CS */
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gpmc_cs_enable_mem(cs);
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*base = res->start;
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gpmc_cs_set_reserved(cs, 1);
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out:
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@ -1667,6 +1667,7 @@ static int gpmc_probe_generic_child(struct platform_device *pdev,
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unsigned long base;
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const char *name;
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int ret, cs;
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u32 val;
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if (of_property_read_u32(child, "reg", &cs) < 0) {
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dev_err(&pdev->dev, "%s has no 'reg' property\n",
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@ -1712,6 +1713,9 @@ static int gpmc_probe_generic_child(struct platform_device *pdev,
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goto no_timings;
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}
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/* CS must be disabled while making changes to gpmc configuration */
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gpmc_cs_disable_mem(cs);
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/*
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* FIXME: gpmc_cs_request() will map the CS to an arbitary
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* location in the gpmc address space. When booting with
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@ -1735,7 +1739,20 @@ static int gpmc_probe_generic_child(struct platform_device *pdev,
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if (ret < 0)
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goto err;
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gpmc_cs_set_timings(cs, &gpmc_t);
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ret = gpmc_cs_set_timings(cs, &gpmc_t);
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if (ret) {
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dev_err(&pdev->dev, "failed to set gpmc timings for: %s\n",
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child->name);
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goto err;
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}
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/* Clear limited address i.e. enable A26-A11 */
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val = gpmc_read_reg(GPMC_CONFIG);
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val &= ~GPMC_CONFIG_LIMITEDADDRESS;
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gpmc_write_reg(GPMC_CONFIG, val);
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/* Enable CS region */
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gpmc_cs_enable_mem(cs);
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no_timings:
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if (of_platform_device_create(child, NULL, &pdev->dev))
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@ -1832,13 +1849,18 @@ static int gpmc_probe(struct platform_device *pdev)
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else
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gpmc_irq = res->start;
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gpmc_l3_clk = clk_get(&pdev->dev, "fck");
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gpmc_l3_clk = devm_clk_get(&pdev->dev, "fck");
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if (IS_ERR(gpmc_l3_clk)) {
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dev_err(&pdev->dev, "error: clk_get\n");
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dev_err(&pdev->dev, "Failed to get GPMC fck\n");
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gpmc_irq = 0;
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return PTR_ERR(gpmc_l3_clk);
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}
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if (!clk_get_rate(gpmc_l3_clk)) {
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dev_err(&pdev->dev, "Invalid GPMC fck clock rate\n");
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return -EINVAL;
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}
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pm_runtime_enable(&pdev->dev);
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pm_runtime_get_sync(&pdev->dev);
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@ -1878,7 +1900,6 @@ static int gpmc_probe(struct platform_device *pdev)
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rc = gpmc_probe_dt(pdev);
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if (rc < 0) {
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pm_runtime_put_sync(&pdev->dev);
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clk_put(gpmc_l3_clk);
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dev_err(gpmc_dev, "failed to probe DT parameters\n");
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return rc;
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}
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