powerpc/fsl_soc: isolate legacy fsl_spi support to mpc832x_rdb boards
The advantages of this: - Don't encourage legacy support; - Less external symbols, less code to compile-in for !MPC832x_RDB platforms. Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Cc: David Brownell <david-b@pacbell.net> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Kumar Gala <galak@gate.crashing.org> Cc: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Anton Vorontsov
Linus Torvalds
parent
7545828531
commit
e2801806de
3 changed files with 107 additions and 111 deletions
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@ -20,6 +20,7 @@
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#include <linux/spi/mmc_spi.h>
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#include <linux/mmc/host.h>
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#include <linux/of_platform.h>
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#include <linux/fsl_devices.h>
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#include <asm/time.h>
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#include <asm/ipic.h>
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@ -39,6 +40,112 @@
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#endif
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#ifdef CONFIG_QUICC_ENGINE
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static int __init of_fsl_spi_probe(char *type, char *compatible, u32 sysclk,
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struct spi_board_info *board_infos,
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unsigned int num_board_infos,
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void (*cs_control)(struct spi_device *dev,
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bool on))
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{
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struct device_node *np;
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unsigned int i = 0;
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for_each_compatible_node(np, type, compatible) {
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int ret;
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unsigned int j;
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const void *prop;
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struct resource res[2];
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struct platform_device *pdev;
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struct fsl_spi_platform_data pdata = {
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.cs_control = cs_control,
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};
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memset(res, 0, sizeof(res));
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pdata.sysclk = sysclk;
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prop = of_get_property(np, "reg", NULL);
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if (!prop)
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goto err;
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pdata.bus_num = *(u32 *)prop;
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prop = of_get_property(np, "cell-index", NULL);
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if (prop)
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i = *(u32 *)prop;
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prop = of_get_property(np, "mode", NULL);
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if (prop && !strcmp(prop, "cpu-qe"))
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pdata.qe_mode = 1;
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for (j = 0; j < num_board_infos; j++) {
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if (board_infos[j].bus_num == pdata.bus_num)
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pdata.max_chipselect++;
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}
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if (!pdata.max_chipselect)
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continue;
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ret = of_address_to_resource(np, 0, &res[0]);
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if (ret)
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goto err;
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ret = of_irq_to_resource(np, 0, &res[1]);
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if (ret == NO_IRQ)
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goto err;
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pdev = platform_device_alloc("mpc83xx_spi", i);
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if (!pdev)
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goto err;
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ret = platform_device_add_data(pdev, &pdata, sizeof(pdata));
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if (ret)
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goto unreg;
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ret = platform_device_add_resources(pdev, res,
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ARRAY_SIZE(res));
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if (ret)
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goto unreg;
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ret = platform_device_add(pdev);
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if (ret)
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goto unreg;
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goto next;
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unreg:
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platform_device_del(pdev);
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err:
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pr_err("%s: registration failed\n", np->full_name);
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next:
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i++;
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}
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return i;
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}
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static int __init fsl_spi_init(struct spi_board_info *board_infos,
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unsigned int num_board_infos,
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void (*cs_control)(struct spi_device *spi,
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bool on))
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{
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u32 sysclk = -1;
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int ret;
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/* SPI controller is either clocked from QE or SoC clock */
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sysclk = get_brgfreq();
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if (sysclk == -1) {
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sysclk = fsl_get_sys_freq();
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if (sysclk == -1)
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return -ENODEV;
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}
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ret = of_fsl_spi_probe(NULL, "fsl,spi", sysclk, board_infos,
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num_board_infos, cs_control);
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if (!ret)
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of_fsl_spi_probe("spi", "fsl_spi", sysclk, board_infos,
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num_board_infos, cs_control);
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return spi_register_board_info(board_infos, num_board_infos);
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}
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static void mpc83xx_spi_cs_control(struct spi_device *spi, bool on)
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{
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pr_debug("%s %d %d\n", __func__, spi->chip_select, on);
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@ -417,113 +417,6 @@ err:
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arch_initcall(fsl_usb_of_init);
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static int __init of_fsl_spi_probe(char *type, char *compatible, u32 sysclk,
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struct spi_board_info *board_infos,
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unsigned int num_board_infos,
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void (*cs_control)(struct spi_device *dev,
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bool on))
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{
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struct device_node *np;
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unsigned int i = 0;
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for_each_compatible_node(np, type, compatible) {
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int ret;
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unsigned int j;
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const void *prop;
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struct resource res[2];
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struct platform_device *pdev;
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struct fsl_spi_platform_data pdata = {
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.cs_control = cs_control,
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};
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memset(res, 0, sizeof(res));
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pdata.sysclk = sysclk;
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prop = of_get_property(np, "reg", NULL);
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if (!prop)
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goto err;
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pdata.bus_num = *(u32 *)prop;
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prop = of_get_property(np, "cell-index", NULL);
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if (prop)
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i = *(u32 *)prop;
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prop = of_get_property(np, "mode", NULL);
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if (prop && !strcmp(prop, "cpu-qe"))
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pdata.qe_mode = 1;
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for (j = 0; j < num_board_infos; j++) {
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if (board_infos[j].bus_num == pdata.bus_num)
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pdata.max_chipselect++;
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}
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if (!pdata.max_chipselect)
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continue;
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ret = of_address_to_resource(np, 0, &res[0]);
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if (ret)
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goto err;
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ret = of_irq_to_resource(np, 0, &res[1]);
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if (ret == NO_IRQ)
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goto err;
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pdev = platform_device_alloc("mpc83xx_spi", i);
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if (!pdev)
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goto err;
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ret = platform_device_add_data(pdev, &pdata, sizeof(pdata));
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if (ret)
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goto unreg;
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ret = platform_device_add_resources(pdev, res,
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ARRAY_SIZE(res));
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if (ret)
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goto unreg;
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ret = platform_device_add(pdev);
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if (ret)
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goto unreg;
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goto next;
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unreg:
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platform_device_del(pdev);
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err:
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pr_err("%s: registration failed\n", np->full_name);
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next:
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i++;
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}
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return i;
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}
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int __init fsl_spi_init(struct spi_board_info *board_infos,
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unsigned int num_board_infos,
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void (*cs_control)(struct spi_device *spi, bool on))
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{
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u32 sysclk = -1;
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int ret;
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#ifdef CONFIG_QUICC_ENGINE
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/* SPI controller is either clocked from QE or SoC clock */
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sysclk = get_brgfreq();
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#endif
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if (sysclk == -1) {
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sysclk = fsl_get_sys_freq();
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if (sysclk == -1)
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return -ENODEV;
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}
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ret = of_fsl_spi_probe(NULL, "fsl,spi", sysclk, board_infos,
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num_board_infos, cs_control);
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if (!ret)
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of_fsl_spi_probe("spi", "fsl_spi", sysclk, board_infos,
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num_board_infos, cs_control);
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return spi_register_board_info(board_infos, num_board_infos);
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}
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#if defined(CONFIG_PPC_85xx) || defined(CONFIG_PPC_86xx)
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static __be32 __iomem *rstcr;
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@ -19,10 +19,6 @@ extern u32 fsl_get_sys_freq(void);
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struct spi_board_info;
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struct device_node;
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extern int fsl_spi_init(struct spi_board_info *board_infos,
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unsigned int num_board_infos,
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void (*cs_control)(struct spi_device *spi, bool on));
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extern void fsl_rstcr_restart(char *cmd);
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#if defined(CONFIG_FB_FSL_DIU) || defined(CONFIG_FB_FSL_DIU_MODULE)
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