diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/bus/omap_l3_noc.c | 55 | ||||
| -rw-r--r-- | drivers/bus/omap_l3_noc.h | 72 |
2 files changed, 84 insertions, 43 deletions
diff --git a/drivers/bus/omap_l3_noc.c b/drivers/bus/omap_l3_noc.c index 7743e86e88b1..7e0a988ad579 100644 --- a/drivers/bus/omap_l3_noc.c +++ b/drivers/bus/omap_l3_noc.c @@ -14,12 +14,14 @@ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. */ -#include <linux/module.h> #include <linux/init.h> -#include <linux/io.h> -#include <linux/platform_device.h> #include <linux/interrupt.h> +#include <linux/io.h> #include <linux/kernel.h> +#include <linux/module.h> +#include <linux/of_device.h> +#include <linux/of.h> +#include <linux/platform_device.h> #include <linux/slab.h> #include "omap_l3_noc.h" @@ -58,17 +60,18 @@ static irqreturn_t l3_interrupt_handler(int irq, void *_l3) void __iomem *l3_targ_stderr, *l3_targ_slvofslsb, *l3_targ_mstaddr; char *target_name, *master_name = "UN IDENTIFIED"; struct l3_target_data *l3_targ_inst; + struct l3_masters_data *master; /* Get the Type of interrupt */ inttype = irq == l3->app_irq ? L3_APPLICATION_ERROR : L3_DEBUG_ERROR; - for (i = 0; i < L3_MODULES; i++) { + for (i = 0; i < l3->num_modules; i++) { /* * Read the regerr register of the clock domain * to determine the source */ base = l3->l3_base[i]; - err_reg = readl_relaxed(base + l3_flagmux[i] + + err_reg = readl_relaxed(base + l3->l3_flagmux[i] + L3_FLAGMUX_REGERR0 + (inttype << 3)); /* Get the corresponding error and analyse */ @@ -79,7 +82,7 @@ static irqreturn_t l3_interrupt_handler(int irq, void *_l3) /* We DONOT expect err_src to go out of bounds */ BUG_ON(err_src > MAX_CLKDM_TARGETS); - l3_targ_inst = &l3_targ[i][err_src]; + l3_targ_inst = &l3->l3_targ[i][err_src]; target_name = l3_targ_inst->name; l3_targ_base = base + l3_targ_inst->offset; @@ -101,7 +104,7 @@ static irqreturn_t l3_interrupt_handler(int irq, void *_l3) inttype ? "debug" : "application", err_src, i, "(unclearable)"); - mask_reg = base + l3_flagmux[i] + + mask_reg = base + l3->l3_flagmux[i] + L3_FLAGMUX_MASK0 + (inttype << 3); mask_val = readl_relaxed(mask_reg); mask_val &= ~(1 << err_src); @@ -131,10 +134,12 @@ static irqreturn_t l3_interrupt_handler(int irq, void *_l3) break; case CUSTOM_ERROR: - for (k = 0; k < NUM_OF_L3_MASTERS; k++) { - if (masterid == l3_masters[k].id) - master_name = - l3_masters[k].name; + for (k = 0, master = l3->l3_masters; + k < l3->num_masters; k++, master++) { + if (masterid == master->id) { + master_name = master->name; + break; + } } WARN(true, "L3 custom error: MASTER:%s TARGET:%s\n", master_name, target_name); @@ -154,20 +159,34 @@ static irqreturn_t l3_interrupt_handler(int irq, void *_l3) return IRQ_HANDLED; } +static const struct of_device_id l3_noc_match[] = { + {.compatible = "ti,omap4-l3-noc", .data = &omap_l3_data}, + {}, +}; +MODULE_DEVICE_TABLE(of, l3_noc_match); + static int omap_l3_probe(struct platform_device *pdev) { + const struct of_device_id *of_id; static struct omap_l3 *l3; int ret, i; + of_id = of_match_device(l3_noc_match, &pdev->dev); + if (!of_id) { + dev_err(&pdev->dev, "OF data missing\n"); + return -EINVAL; + } + l3 = devm_kzalloc(&pdev->dev, sizeof(*l3), GFP_KERNEL); if (!l3) return -ENOMEM; + memcpy(l3, of_id->data, sizeof(*l3)); l3->dev = &pdev->dev; platform_set_drvdata(pdev, l3); /* Get mem resources */ - for (i = 0; i < L3_MODULES; i++) { + for (i = 0; i < l3->num_modules; i++) { struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, i); @@ -199,22 +218,12 @@ static int omap_l3_probe(struct platform_device *pdev) return ret; } -#if defined(CONFIG_OF) -static const struct of_device_id l3_noc_match[] = { - {.compatible = "ti,omap4-l3-noc", }, - {}, -}; -MODULE_DEVICE_TABLE(of, l3_noc_match); -#else -#define l3_noc_match NULL -#endif - static struct platform_driver omap_l3_driver = { .probe = omap_l3_probe, .driver = { .name = "omap_l3_noc", .owner = THIS_MODULE, - .of_match_table = l3_noc_match, + .of_match_table = of_match_ptr(l3_noc_match), }, }; diff --git a/drivers/bus/omap_l3_noc.h b/drivers/bus/omap_l3_noc.h index 66caeceaf123..e60865fe5965 100644 --- a/drivers/bus/omap_l3_noc.h +++ b/drivers/bus/omap_l3_noc.h @@ -17,7 +17,9 @@ #ifndef __OMAP_L3_NOC_H #define __OMAP_L3_NOC_H -#define L3_MODULES 3 +#define OMAP_L3_MODULES 3 +#define MAX_L3_MODULES 3 + #define CLEAR_STDERR_LOG (1 << 31) #define CUSTOM_ERROR 0x2 #define STANDARD_ERROR 0x0 @@ -36,8 +38,6 @@ #define MAX_CLKDM_TARGETS 31 -#define NUM_OF_L3_MASTERS (sizeof(l3_masters)/sizeof(l3_masters[0])) - /** * struct l3_masters_data - L3 Master information * @id: ID of the L3 Master @@ -60,13 +60,47 @@ struct l3_target_data { char *name; }; -static u32 l3_flagmux[L3_MODULES] = { + +/** + * struct omap_l3 - Description of data relevant for L3 bus. + * @dev: device representing the bus (populated runtime) + * @l3_base: base addresses of modules (populated runtime) + * @l3_flag_mux: array containing offsets to flag mux per module + * offset from corresponding module base indexed per + * module. + * @num_modules: number of clock domains / modules. + * @l3_masters: array pointing to master data containing name and register + * offset for the master. + * @num_master: number of masters + * @l3_targ: array indexed by flagmux index (bit offset) pointing to the + * target data. unsupported ones are marked with + * L3_TARGET_NOT_SUPPORTED + * @debug_irq: irq number of the debug interrupt (populated runtime) + * @app_irq: irq number of the application interrupt (populated runtime) + */ +struct omap_l3 { + struct device *dev; + + void __iomem *l3_base[MAX_L3_MODULES]; + u32 *l3_flagmux; + int num_modules; + + struct l3_masters_data *l3_masters; + int num_masters; + + struct l3_target_data **l3_targ; + + int debug_irq; + int app_irq; +}; + +static u32 omap_l3_flagmux[OMAP_L3_MODULES] = { 0x500, 0x1000, 0X0200 }; -static struct l3_target_data l3_target_inst_data_clk1[MAX_CLKDM_TARGETS] = { +static struct l3_target_data omap_l3_target_data_clk1[MAX_CLKDM_TARGETS] = { {0x100, "DMM1",}, {0x200, "DMM2",}, {0x300, "ABE",}, @@ -76,7 +110,7 @@ static struct l3_target_data l3_target_inst_data_clk1[MAX_CLKDM_TARGETS] = { {0x900, "L4WAKEUP",}, }; -static struct l3_target_data l3_target_inst_data_clk2[MAX_CLKDM_TARGETS] = { +static struct l3_target_data omap_l3_target_data_clk2[MAX_CLKDM_TARGETS] = { {0x500, "CORTEXM3",}, {0x300, "DSS",}, {0x100, "GPMC",}, @@ -100,13 +134,13 @@ static struct l3_target_data l3_target_inst_data_clk2[MAX_CLKDM_TARGETS] = { {0x1700, "LLI",}, }; -static struct l3_target_data l3_target_inst_data_clk3[MAX_CLKDM_TARGETS] = { +static struct l3_target_data omap_l3_target_data_clk3[MAX_CLKDM_TARGETS] = { {0x0100, "EMUSS",}, {0x0300, "DEBUG SOURCE",}, {0x0, "HOST CLK3",}, }; -static struct l3_masters_data l3_masters[] = { +static struct l3_masters_data omap_l3_masters[] = { { 0x0 , "MPU"}, { 0x10, "CS_ADP"}, { 0x14, "xxx"}, @@ -134,20 +168,18 @@ static struct l3_masters_data l3_masters[] = { { 0xC8, "USBHOSTFS"} }; -static struct l3_target_data *l3_targ[L3_MODULES] = { - l3_target_inst_data_clk1, - l3_target_inst_data_clk2, - l3_target_inst_data_clk3, +static struct l3_target_data *omap_l3_targ[OMAP_L3_MODULES] = { + omap_l3_target_data_clk1, + omap_l3_target_data_clk2, + omap_l3_target_data_clk3, }; -struct omap_l3 { - struct device *dev; - - /* memory base */ - void __iomem *l3_base[L3_MODULES]; - - int debug_irq; - int app_irq; +static const struct omap_l3 omap_l3_data = { + .l3_flagmux = omap_l3_flagmux, + .num_modules = OMAP_L3_MODULES, + .l3_masters = omap_l3_masters, + .num_masters = ARRAY_SIZE(omap_l3_masters), + .l3_targ = omap_l3_targ, }; #endif /* __OMAP_L3_NOC_H */ |